Comtech EF Data CRS-180 Installation And Operation Manual
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IMPORTANT NOTE: The information contained in this document supersedes all previously published
information regarding this product. Product specifications are subject to change without prior notice.
Part Number MN/CRS180.IOM
Revision 8
CRS-180
70/140 MHz IF 1:1 Redundancy Switch
Installation and Operation Manual
Accessory Product for use only with Comtech EF Data CDM-625,
CDM-750, CDM-570, CDM-700, CDM-710, and CDM-710G Modems
(Modem Firmware and Hardware Requirements Apply)
ER-CRS180-EA8 Rev -
This document is not subject to revision/update!
PLM CO C-0027990
Page 1 of 2
Errata A
Comtech EF Data Documentation Update
Original Manual Part
Number/Rev:
MN/CRS180.IOM REV 8
Errata Number/
PLM Document ID:
ER-CRS180-EA8
PLM CO Number:
C‐0027990
Comments:
The updated information will be incorporated into the next formal revision
of the manual.
Change:
NOTES:
1. CDM-625 and CDM-625A switch configurations are identical.
2. Throughout the manual, replace "CDM-625" with "CDM-625/A".
3. CDM-760 and CDM-750 switch configurations are identical.
ER-CRS180-EA8 Rev -
This document is not subject to revision/update!
PLM CO C-0027990
Page 2 of 2
This page is intentionally blank.
Copyright © Comtech EF Data, 2011. All rights reserved. Printed in the USA.
Comtech EF Data, 2114 West 7th Street, Tempe, Arizona 85281 USA, 480.333.2200, FAX: 480.333.2161
CRS-180
70/140 MHz IF 1:1 Redundancy Switch
Installation and Operation Manual
Accessory Product for use only with Comtech EF Data CDM-625,
CDM-750, CDM-570, CDM-700, CDM-710, and CDM-710G Modems
(Modem Firmware and Hardware Requirements Apply)
Part Number MN/CRS180.IOM
Revision 8
October 24, 2011
TABLE OF CONTENTS
TABLE OF CONTENTS .............................................................................................................. III
TABLES .................................................................................................................................. VII
FIGURES................................................................................................................................. VII
PREFACE ................................................................................................................................. XI
About this Manual .................................................................................................................. xi
Reporting Comments or Suggestions Concerning this Manual .................................................. xi
Related Documents ................................................................................................................ xi
Conventions and References ..................................................................................................xii
Warnings, Cautions and Notes .................................................................................................. xii
Examples of Multi‐Hazard Notices ............................................................................................. xii
Metric Conversion ...................................................................................................................... xii
Recommended Standard Designations...................................................................................... xii
Trademarks ............................................................................................................................... xiii
Safety and Compliance .......................................................................................................... xiii
Electrical Safety and Compliance .............................................................................................. xiii
Operating Environment ............................................................................................................ xiii
Equipment Connection ............................................................................................................. xiv
European Union Electromagnetic Compatibility (EMC) Directive (2004/108/EEC) ......................... xiv
European Union Low Voltage Directive (LVD) (2006/95/EC) ................................................... xiv
European Union RoHS Directive (2002/95/EC) .......................................................................... xv
European Union Telecommunications Terminal Equipment Directive (91/263/EEC) .............. xv
CE Mark ...................................................................................................................................... xv
Warranty Policy ..................................................................................................................... xvi
Limitations of Warranty ............................................................................................................ xvi
Exclusive Remedies .................................................................................................................. xvii
Getting Help ........................................................................................................................ xviii
Contacting Comtech EF Data .................................................................................................. xviii
Returning a Product for Upgrade or Repair .............................................................................. xix
CHAPTER 1.
INTRODUCTION ......................................................................................... 1–1
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1.1
Overview .................................................................................................................. 1–1
1.1.1 Modem Side Connectors............................................................................................. 1–2
1.1.2 Antenna Side Connectors ........................................................................................... 1–3
1.2
Functional Description ............................................................................................. 1–3
1.2.1 Operation with CDM‐625/750/570/700/710/710G ................................................... 1–3
1.2.1.1
1:1 IP Redundancy Data Switching – Functional Description ............................. 1–5
1.2.1.1.1 CDM‐570 (with optional IP Module) Managed Switch or Router Modes ..... 1–5
1.2.1.1.2 CDM‐625/750/700/710/710G Managed Switch Mode ................................ 1–7
1.2.1.1.3 CDM‐625 (with Optional IP Packet Processor) – Router Mode .................. 1–10
1.3
Summary of Specifications ..................................................................................... 1–13
CHAPTER 2.
INSTALLATION ........................................................................................... 2–1
2.1
Unpacking and Inspection ........................................................................................ 2–1
2.2
Mounting ................................................................................................................. 2–2
CHAPTER 3.
MODEM AND SWITCH CONFIGURATION ................................................... 3–1
3.1
Overview .................................................................................................................. 3–1
3.2
Configuring CDM‐625s for 1:1 Redundancy .............................................................. 3–3
3.2.1 User Remote Ethernet M&C Interface ....................................................................... 3–3
3.2.2 Carrier‐in‐Carrier® Redundancy Configuration ........................................................... 3–4
3.3
CDM‐750 Operation in 1:1 Redundancy ................................................................... 3–5
3.4
Configuring CDM‐570s for 1:1 Redundancy .............................................................. 3–7
3.4.1 IP Redundancy Configuration ..................................................................................... 3–8
3.4.2 Non‐IP Redundancy Configuration ............................................................................. 3–9
3.5
Configuring CDM‐700s/CDM‐710s/CDM‐710Gs for 1:1 Redundancy ...................... 3–11
3.5.1 IP Redundancy Configuration ................................................................................... 3–12
3.5.2 Non‐IP Redundancy Configuration ........................................................................... 3–12
3.6
CRS‐180 Switch DIP Settings ................................................................................... 3–13
CHAPTER 4.
CABLES AND CONNECTIONS ...................................................................... 4–1
4.1
Overview .................................................................................................................. 4–1
4.2
Cabling to the CDM‐625 ........................................................................................... 4–3
4.2.1
CRS‐180 Æ CDM‐625 Control and IF Interface Cabling Kit KT‐0000159 ....................... 4–3
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4.2.2 Modem‐to‐Switch Control Interface Connection ....................................................... 4–4
4.2.3 Modem‐to‐Switch IF Interface Connection ................................................................ 4–5
4.2.4 Modem‐to‐User Data Interface Connections and Examples ...................................... 4–6
4.2.4.1
RS‐422/232 Interface Example ........................................................................... 4–7
4.2.4.2
HSSI Interface Example ....................................................................................... 4–7
4.2.4.3
ASI Interface Example ......................................................................................... 4–8
4.2.4.4
Quad E1 Interface Example ................................................................................. 4–9
4.2.4.5
G.703 Balanced Interface Example ................................................................... 4–10
4.2.4.6
G.703 Unbalanced Interface Example .............................................................. 4–10
4.2.4.7
Overhead Interface Example ............................................................................ 4–11
4.2.4.8
Engineering Service Channel (ESC) Interface Example ..................................... 4–11
4.2.4.9
10/100 Ethernet Interface Examples ................................................................ 4–12
4.2.4.9.1 Managed Switch Mode (with/without IP Packet Processor) ...................... 4–12
4.2.4.9.2 Router Mode (Optional IP Packet Processor Required) .............................. 4–13
4.2.4.9.3 Data Interface Connections using IP Sub‐Mux ............................................ 4–14
4.2.4.10
PMSI Interface Example ................................................................................ 4–14
4.3
Cabling to the CDM‐750 ......................................................................................... 4–15
4.3.1 Modem‐to‐Switch Control and IF Interface Connection .......................................... 4–15
4.3.2 Modem‐to‐User Data Interface Connections and Examples .................................... 4–17
4.3.2.1
RJ‐45 Gigabit Ethernet Data Interface Example ............................................... 4–17
4.3.2.2
Optical Gigabit Ethernet Interface Option Example ......................................... 4–18
4.3.2.3
Serial Data Interface Kit and Connection Examples ......................................... 4–19
4.3.2.3.1 KT/12542 Single G.703 E3/T3 75Ω (PIIC) Interface Kit ................................ 4–20
4.4
Cabling to the CDM‐570 ......................................................................................... 4–21
4.4.1 CRS‐180 Æ CDM‐570 1:1 Redundancy Kit KT/11599 ............................................... 4–21
4.4.2 Modem‐to‐Switch Control Interface Connection ..................................................... 4–22
4.4.3 Modem‐to‐Switch IF Interface Connection .............................................................. 4–23
4.4.4 Modem‐to‐User Data Interface Connections and Examples .................................... 4–24
4.4.4.1
RS‐422/232 Interface Example ......................................................................... 4–25
4.4.4.2
G.703 Balanced Interface Example ................................................................... 4–25
4.4.4.3
G.703 Unbalanced Interface Example .............................................................. 4–26
4.4.4.4
10/100 Ethernet Interface Example ................................................................. 4–27
4.5
Cabling to the CDM‐700 ......................................................................................... 4–29
4.5.1 Modem‐to‐Switch Control and IF Interface Connection .......................................... 4–29
4.5.2 Modem‐to‐User Data Interface Kits and Connection Examples ............................... 4–31
4.5.2.1
Dual G.703 E3/T3/STS‐1 75Ω Data Interface (CDI‐10) Kit KT/12542 and HSSI Data
Interface (CDI‐60) Kit KT/12578 ....................................................................... 4–32
4.5.2.2
155MB Copper Data Interface (CDI‐50) Kit KT/12579 ...................................... 4–33
4.5.2.3
OC‐3 Data Interface (CDI‐50) Kits KT/12580 (Single‐Mode) or KT/12581 (Multi‐
Mode)................................................................................................................ 4–34
4.5.2.4
Gigabit Ethernet Data Interface (CDI‐70) Example ........................................... 4–35
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4.6
Cabling to the CDM‐710 ......................................................................................... 4–37
4.6.1 Modem‐to‐Switch Control and IF Interface Connection .......................................... 4–37
4.6.2 Modem‐to‐User Data Interface Kit and Connection Examples ................................ 4–39
4.6.2.1
ASI 75Ω Data Interface (CDI‐40) Kit KT/12579 .................................................. 4–40
4.6.2.2
HSSI Data Interface (CDI‐60) Interface Kit KT/12578 ........................................ 4–41
4.6.2.3
Gigabit Ethernet Data Interface (CDI‐70) Example ........................................... 4–42
4.7
Cabling to the CDM‐710G ....................................................................................... 4–43
4.7.1 Modem‐to‐Switch Control and IF Interface Connection .......................................... 4–43
4.7.2 Modem‐to‐User Data Interface Kit and Connection Examples ................................ 4–45
4.7.2.1
Single G.703 E3/T3/STS‐1 75Ω Data Interface (CDI‐10‐1) Kit KT/12583 ............... 4–46
4.7.2.2
HSSI Data Interface (CDI‐60) Kit KT/12586 ....................................................... 4–47
4.7.2.3
Gigabit Ethernet Interface (CDI‐70) Example ................................................... 4–48
CHAPTER 5.
CONNECTOR PINOUTS ............................................................................... 5–1
5.1
Overview .................................................................................................................. 5–1
5.2
Modem Side: Type ‘BNC’ IF Connectors .................................................................... 5–2
5.3
J3 Control Connector (Top) – Modem ‘A’ .................................................................. 5–2
5.4
J4 Control Connector (Bottom) – Modem ‘B’ ............................................................ 5–3
5.5
Antenna Side: Type ‘BNC’ IF Connectors ................................................................... 5–3
APPENDIX A.
CABLE DRAWINGS ..................................................................................... A‐1
A.1
Introduction .............................................................................................................. A‐1
A.2
Control Interface Cables ............................................................................................ A‐1
A.2.1
Universal Control Cable, DB‐9M Æ DB‐9M ............................................................. A‐2
A.2.2
Adapter Control Cable, RoHS, DB‐9M Æ DB‐15F .................................................... A‐3
A.2.3
Optional ‘Y’ Splitter Adapter Control Cable, (2X) DB‐9M Æ DB‐15F ....................... A‐4
A.2.4
Optional Control Cable, Non‐muting, DB‐9M Æ DB‐15F ........................................ A‐5
A.3
IF / Data Interface Cables .......................................................................................... A‐6
A.3.1
Modem to CRS‐180, 70/140 MHz Coaxial Cable, RoHS, Type ‘BNC’ 50Ω ................ A‐8
A.3.2
Modem to User, 70/140 MHz Coaxial Cable, RoHS, Type ‘BNC’ 75Ω ...................... A‐9
A.3.3
Modem to User, Splitter Cable, (2X) DB‐25M Æ DB‐25F ...................................... A‐10
A.3.4
Modem to User, CDM‐625 Data ‘Y’ Splitter Cable, (2X) DB‐9M Æ DB‐9F ............ A‐11
A.3.5
Modem to User, Quad E1 ‘Y’ Splitter Adapter Cable, (2X) DB‐15F Æ DB‐9M ....... A‐12
A.3.6
Modem to User, Quad E1 ‘Y’ Splitter Adapter Cable, (2X) RJ‐48F Æ DB‐9M ........ A‐13
A.3.7
Modem to User, Quad E1 ‘Y’ Splitter Adapter Cable Kit (KT‐0000122) ................. A‐14
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A.3.8
Modem to User, Overhead User Data ‘Y’ Splitter Cable, (2X) HD‐44M Æ HD‐44F ......
................................................................................................................................ A‐15
A.3.9
Modem to Modem Shielded Multi‐drop CnC® Plus, CDM‐625 1:1 Cable, DB‐9M Æ
DB‐9M ................................................................................................................... A‐16
A.3.10
User to CRS‐180, Coax Cable, RoHS, Type ‘BNC’ 75Ω ............................................ A‐17
A.3.11
Modem to User, Optical Gigabit Ethernet Single‐Mode OR Multi‐Mode Cable
Assemblies, (2X) Type ‘LC’ Æ (4X) Type ‘LC’ ............................................................ A‐18
A.3.12
Modem to User G.703 Balanced User Data ‘Y’ Splitter Cable, (2X) DB‐15M Æ
DB‐15M ...................................................................................................... A‐19
A.3.13
Modem to User, HSSI User Data ‘Y’ Splitter Cable, (2X) HD‐50M Æ HD‐50F ........ A‐20
A.3.14
Modem to User, OC‐3 Single‐Mode OR Multi‐Mode Cable Assemblies, Type
‘SC/UPC’ Æ (2X) Type ‘SC/UPC’ ........................................................................... A‐21
TABLES
Table 1‐1. CRS‐180 Application Summary .................................................................................. 1–2
Table 3‐1. CRS‐180 DIP Switch Settings .................................................................................... 3–13
Table 5‐1. Modem Side Type ‘BNC’ Connectors ......................................................................... 5–2
Table 5‐2. J3 ‐ Modem ‘A’ Control Connector Pin Assignments ................................................. 5–2
Table 5‐3. J4 ‐ Modem ‘B’ Control Connector Pin Assignments ................................................. 5–3
Table 5‐4. J7 (Rx) and J8 (Tx) Type ‘BNC’ Connectors ................................................................. 5–3
FIGURES
Figure 1‐1. CRS‐180 70/140 MHz IF 1:1 Redundancy Switch ..................................................... 1–1
Figure 1‐2. CRS‐180 – Modem Side Connectors ......................................................................... 1–2
Figure 1‐3. CRS‐180 – Antenna Side Connectors and Ground Lug ............................................. 1–3
Figure 1‐4. CDM‐570 1:1 IP Redundancy Router Mode – ‘A’ Online .......................................... 1–6
Figure 1‐5. CDM‐570 1:1 IP Redundancy Router Mode – Switchover (‘B’ Online) ..................... 1–7
Figure 1‐6. CDM‐625/750/700/710/710G 1:1 IP Redundancy Managed Switch Mode ............. 1–8
Figure 1‐7. CDM‐625/750/700/710/710G 1:1 IP Redundancy Managed Switch Mode – Switchover .....
............................................................................................................................................. 1–9
Figure 1‐8. CDM‐625 1:1 IP Redundancy Router Mode – ‘A’ Online ........................................ 1–11
Figure 1‐9. CDM‐625 1:1 IP Redundancy Router Mode – Switchover (‘B’ Online) .................. 1–12
Figure 2‐1. KT/11708 Mounting Panel Kit (for horizontal or vertical mounting) ....................... 2–2
Figure 3‐1. CDM‐570 Configuration Interfaces ........................................................................... 3–7
Figure 3‐2. CDM‐570 CLI 1:1 Redundancy Configuration screen ............................................... 3–9
Figure 3‐3. CRS‐180 Antenna Side – DIP Switches .................................................................... 3–13
Figure 4‐1. CDM‐625 Modem‐to‐Switch Control Connections ................................................... 4–4
Figure 4‐2. CDM‐625 Modem‐to‐Switch 70/140 MHz IF Connections ....................................... 4–5
Figure 4‐3. CDM‐625 Block Diagram: User Æ Modem Æ Switch Æ Traffic .............................. 4–6
Figure 4‐4. CDM‐625 RS‐422/232 1:1 Example .......................................................................... 4–7
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Figure 4‐5. CDM‐625 HSSI 1:1 Example ...................................................................................... 4–7
Figure 4‐6. CDM‐625 ASI 1:1 Example ........................................................................................ 4–8
Figure 4‐7. CDM‐625 Quad E1 1:1 Example ................................................................................ 4–9
Figure 4‐8. CDM‐625 G.703 Balanced 1:1 Example .................................................................. 4–10
Figure 4‐9. CDM‐625 G.703 Unbalanced 1:1 Example ............................................................. 4–10
Figure 4‐10. CDM‐625 Overhead 1:1 Example ......................................................................... 4–11
Figure 4‐11. CDM‐625 ESC 1:1 Example ................................................................................... 4–11
Figure 4‐12. CDM‐625 10/100 Ethernet 1:1 Example – Managed Switch Mode ..................... 4–12
Figure 4‐13. CDM‐625 10/100 Ethernet 1:1 Example – Router Mode ..................................... 4–13
Figure 4‐14. CDM‐625 PMSI 1:1 Example ................................................................................. 4–14
Figure 4‐15. CDM‐750 Modem‐to‐Switch Control & IF Connections – KT‐0000160 ................ 4–16
Figure 4‐16. CDM‐750 RJ‐45 Gigabit Ethernet 1:1 Example ..................................................... 4–17
Figure 4‐17. CDM‐750 Optical Gigabit Ethernet 1:1 Example .................................................. 4–18
Figure 4‐18. CDM‐750 Block Diagram: User Æ Modem Æ Switch Æ Traffic .......................... 4–19
Figure 4‐19. CDM‐750 G.703 E3/T3 PIIC Interface Kit – KT/12542 ........................................... 4–20
Figure 4‐20. CDM‐570 Modem‐to‐Switch Control Connections............................................... 4–22
Figure 4‐21. CDM‐570 Modem‐to‐Switch 70/140 MHz IF Connections ................................... 4–23
Figure 4‐22. CDM‐570 Block Diagram: User Æ Modem Æ Switch Æ Traffic .......................... 4–24
Figure 4‐23. CDM‐570 RS‐422/232 1:1 Example ...................................................................... 4–25
Figure 4‐24. CDM‐570 G.703 Balanced 1:1 Example ................................................................ 4–25
Figure 4‐25. CDM‐570 G.703 Unbalanced 1:1 Example ........................................................... 4–26
Figure 4‐26. CDM‐570 10/100 Ethernet 1:1 Example............................................................... 4–27
Figure 4‐27. CDM‐700 Modem‐to‐Switch Control & IF Connections – KT/12554 .................... 4–30
Figure 4‐28. CDM‐700 Block Diagram: User Æ Modem Æ Switch Æ Traffic .......................... 4–31
Figure 4‐29. CDM‐700 G.703 E3/T3/STS‐1 and HSSI 1:1 Example .............................................. 4–32
Figure 4‐30. CDM‐700 155MB Copper 1:1 Example ................................................................. 4–33
Figure 4‐31. CDM‐700 OC‐3 1:1 Example (Single‐Mode shown) .............................................. 4–34
Figure 4‐32. CDM‐700 Gigabit Ethernet (GigE) 1:1 Example .................................................... 4–35
Figure 4‐33. CDM‐710 Modem‐to‐Switch Control & IF Connections – KT/12554 .................... 4–38
Figure 4‐34. CDM‐710 Block Diagram: User Æ Modem Æ Switch Æ Traffic .......................... 4–39
Figure 4‐35. CDM‐710 ASI 1:1 Example .................................................................................... 4–40
Figure 4‐36. CDM‐710 HSSI 1:1 Example .................................................................................. 4–41
Figure 4‐37. CDM‐710 Gigabit Ethernet (GigE) 1:1 Example .................................................... 4–42
Figure 4‐38. CDM‐710G Modem‐to‐Switch Control & IF Connections – KT/12554 ................. 4–44
Figure 4‐39. CDM‐710G Block Diagram: User Æ Modem Æ Switch Æ Traffic .......................... 4–45
Figure 4‐40. CDM‐710G Single G.703 E3/T3/STS‐1 1:1 Example ............................................... 4–46
Figure 4‐41. CDM‐710G HSSI 1:1 Example ................................................................................ 4–47
Figure 4‐42. CDM‐710G Gigabit Ethernet (GigE) 1:1 Example ................................................. 4–48
Figure 5‐1. CRS‐180 – Modem and Antenna Side Connectors ................................................... 5–1
Figure A‐1. Universal Control Cable (CEFD P/N CA/WR9378‐4) ................................................. A‐2
Figure A‐2. Adapter Control Cable (CEFD P/N CA/WR12135‐1) .................................................. A‐3
Figure A‐3. Optional ‘Y’ Splitter Adapter Control Cable (CEFD P/N CA/WR13011‐4).................. A‐4
Figure A‐4. Optional Control Cable (CEFD P/N CA‐0000187) ...................................................... A‐5
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Figure A‐5. Tx/Rx 50Ω Type ‘BNC’ RoHS Coax Cable (CEFD P/N PL/0946‐1) ............................... A‐8
Figure A‐6. 75Ω Type ‘BNC’ User Data Coaxial Cable (CEFD P/N CA/BNC75OHM) ..................... A‐9
Figure A‐7. 1:1 User Data Splitter Cable (CEFD P/N CA/RB10461‐1) ......................................... A‐10
Figure A‐8. 1:1 User Data ‘Y’ Splitter Cable (CEFD P/N CA‐0000071) ........................................ A‐11
Figure A‐9. 1:1 Quad E1 User Data ‘Y’ Splitter Adapter Cable (CEFD P/N CA‐0000163) ........... A‐12
Figure A‐10. Quad E1 User Data ‘Y’ Splitter Adapter Cable (CEFD P/N CA‐0000164) ............... A‐13
Figure A‐11. Quad E1 User Data ‘Y’ Splitter Adapter Cable Kit (CEFD P/N KT‐0000122) .......... A‐14
Figure A‐12. Overhead User Data ‘Y’ Splitter Cable (CEFD P/N CA‐0000070) ........................... A‐15
Figure A‐13. Modem to Modem Shielded Multi‐drop CnC® Plus, CDM‐625 1:1 Cable (CEFD P/N
CA‐0000276) ......................................................................................................... A‐16
Figure A‐14. Tx/Rx 75Ω Type ‘BNC’ RoHS Coax Cable (CEFD P/N PL/0813‐4) ........................... A‐17
Figure A‐15. Optical Gigabit Ethernet User Data Cable Assembly (See Table for CEFD P/N) .... A‐18
Figure A‐16. G.703 Balanced User Data ‘Y’ Splitter Cable (CEFD P/N CA/WR10522‐1) ............ A‐19
Figure A‐17. HSSI User Data ‘Y’ Splitter Cable (CEFD P/N PP/SC3523) ...................................... A‐20
Figure A‐18. OC‐3 User Data Cable Assembly (See Table for CEFD P/N) ................................... A‐21
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About this Manual
This manual provides installation and operation information for the Comtech EF Data CRS‐180
70/140 MHz IF 1:1 Redundancy Switch. This is a technical document intended for the persons
responsible for the operation and maintenance of the CRS‐180 and its supported modems.
Reporting Comments or Suggestions Concerning this Manual
Comtech EF Data welcomes comments and suggestions regarding the content and design of this
manual. To submit comments, contact the Comtech EF Data Technical Publications Department:
[email protected].
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•
Comtech EF Data CDM‐570/CDM‐570L/CDMR‐570L Satellite Modem Installation and Operation
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CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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Conventions and References
Warnings, Cautions and Notes
A WARNING gives information about a possible hazard that MAY CAUSE DEATH or
SERIOUS INJURY.
A CAUTION gives information about a possible hazard that MAY CAUSE INJURY or
PROPERTY DAMAGE.
A NOTE gives important information about a task or the equipment.
A REFERENCE directs the user to additional information about a task or the equipment.
Examples of Multi-Hazard Notices
Metric Conversion
Metric conversion information is located on the inside back cover of this manual. This information
is provided to assist the operator in cross‐referencing non‐Metric to Metric conversions.
Recommended Standard Designations
Recommended Standard (RS) Designations have been superseded by the new designation of the
Electronic Industries Association (EIA). References to the old designations may be shown when
depicting actual text displayed on the individual product Web or Telnet (i.e., remote control)
interface pages for the unit (e.g., RS‐232). All other references in the manual will be shown with
the EIA designations.
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Trademarks
Product names mentioned in this manual may be trademarks or registered trademarks of their
respective companies and are hereby acknowledged.
The user should carefully review the following information:
Safety and Compliance
Electrical Safety and Compliance
The unit complies with the EN 60950 Safety of Information Technology Equipment (Including
Electrical Business Machines) safety standard.
The equipment is rated for operation at ±12 volts DC. It has a maximum power consumption of 1
Watt, and draws a maximum of 80 mA at +12 volts DC and 120 mA at ‐12 volts DC. The power
supply current is, in all circumstances, supplied by either a single Comtech EF Data modem, or a
pair of these modems.
IF THE UNIT IS OPERATED IN A VEHICLE OR MOVABLE INSTALLATION, MAKE SURE
THE UNIT IS STABLE. OTHERWISE, EN 60950 SAFETY IS NOT GUARANTEED.
Operating Environment
DO NOT OPERATE THE UNIT IN ANY OF THESE EXTREME OPERATING CONDITIONS:
•
AMBIENT TEMPERATURES LESS THAN 0° C (32° F) OR MORE THAN 50° C
(122° F).
•
PRECIPITATION, CONDENSATION, OR HUMID ATMOSPHERES OF MORE
THAN 95% RELATIVE HUMIDITY.
•
UNPRESSURIZED ALTITUDES OF MORE THAN 2000 METRES (6561.7 FEET).
•
EXCESSIVE DUST.
•
FLAMMABLE GASES.
•
CORROSIVE OR EXPLOSIVE ATMOSPHERES.
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Equipment Connection
THE CRS‐180 IS DESIGNED FOR OPERATION ONLY WITH THE COMTECH EF DATA
MODEMS LISTED IN THIS MANUAL. THESE MODEMS SUPPLY DC OPERATING
CURRENT (ELECTRONICALLY FUSED AND PROTECTED) AND CONTROL SIGNALS FOR
THE CORRECT FUNCTIONING OF THIS UNIT. CONNECTION TO OTHER
MANUFACTURERS’ EQUIPMENT COULD RESULT IN DAMAGE TO THE UNIT. THE
CRS‐180 IS NOT COMPATIBLE WITH OTHER COMTECH EF DATA MODEMS NOT
LISTED IN THIS MANUAL.
European Union Electromagnetic Compatibility (EMC) Directive (2004/108/EEC)
Independent testing verifies that the unit complies with the following standards:
•
Emissions, EN 55022 Class B – Limits and Methods of Measurement of Radio
Interference Characteristics of Information Technology Equipment.
In a domestic environment, this deive may cause radio interference that requires the
user to take adequate protective measures.
•
Immunity, EN 55082‐1 – Generic Immunity Standard: Residential , Commercial, and
Light Industry.
•
Federal Communications Commission (FCC) Code of Regulation Part 15, Subpart B.
TO MAKE SURE THAT THE UNIT COMPLIES WITH THESE STANDARDS, OBEY THESE
INSTRUCTIONS:
•
Use coaxial cable that is of good quality for connections to the L‐Band Type ‘N’ Tx
(transmit) and Rx (receive) female connectors.
•
Use Type 'D' connectors that have back‐shells with continuous metallic shielding.
Type ‘D’ cabling must have a continuous outer shield (either foil or braid, or both). The
shield must be bonded to the back‐shell.
•
Operate the unit with its cover on at all times.
European Union Low Voltage Directive (LVD) (2006/95/EC)
Symbol
Description
Type of power cord required for use in the European Community.
!
CAUTION: Double‐pole/Neutral Fusing
ACHTUNG: Zweipolige bzw. Neutralleiter‐Sicherung
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International Symbols
Symbol
Definition
Symbol
Definition
Alternating Current
Protective Earth
Fuse
Chassis Ground
For additional symbols, refer to Warnings, Cautions and Notes listed earlier in this
Preface.
European Union RoHS Directive (2002/95/EC)
This unit satisfies (with exemptions) the requirements specified in the European Union Directive
2002/95/EC on the Restriction of the use of certain Hazardous Substances in Electrical and
Electronic Equipment (RoHS).
European Union Telecommunications Terminal Equipment Directive
(91/263/EEC)
In accordance with the European Union Telecommunications Terminal Equipment Directive
91/263/EEC, the unit should not be directly connected to the Public Telecommunications
Network.
CE Mark
Comtech EF Data declares that the unit meets the necessary requirements for the CE Mark.
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Warranty Policy
Comtech EF Data products are warranted against defects in material and workmanship
for a specific period from the date of shipment, and this period varies by product. In
most cases, the warranty period is two years. During the warranty period, Comtech EF
Data will, at its option, repair or replace products that prove to be defective. Repairs are
warranted for the remainder of the original warranty or a 90 day extended warranty,
whichever is longer. Contact Comtech EF Data for the warranty period specific to the
product purchased.
For equipment under warranty, the owner is responsible for freight to Comtech EF Data
and all related customs, taxes, tariffs, insurance, etc. Comtech EF Data is responsible for
the freight charges only for return of the equipment from the factory to the owner.
Comtech EF Data will return the equipment by the same method (i.e., Air, Express,
Surface) as the equipment was sent to Comtech EF Data.
All equipment returned for warranty repair must have a valid RMA number issued prior
to return and be marked clearly on the return packaging. Comtech EF Data strongly
recommends all equipment be returned in its original packaging.
Comtech EF Data Corporation’s obligations under this warranty are limited to repair or
replacement of failed parts, and the return shipment to the buyer of the repaired or
replaced parts.
Limitations of Warranty
The warranty does not apply to any part of a product that has been installed, altered,
repaired, or misused in any way that, in the opinion of Comtech EF Data Corporation,
would affect the reliability or detracts from the performance of any part of the product,
or is damaged as the result of use in a way or with equipment that had not been
previously approved by Comtech EF Data Corporation.
The warranty does not apply to any product or parts thereof where the serial number or the
serial number of any of its parts has been altered, defaced, or removed.
The warranty does not cover damage or loss incurred in transportation of the product. The
warranty does not cover replacement or repair necessitated by loss or damage from any
cause beyond the control of Comtech EF Data Corporation, such as lightning or other
natural and weather related events or wartime environments.
The warranty does not cover any labor involved in the removal and or reinstallation of
warranted equipment or parts on site, or any labor required to diagnose the necessity
for repair or replacement.
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The warranty excludes any responsibility by Comtech EF Data Corporation for incidental or
consequential damages arising from the use of the equipment or products, or for any
inability to use them either separate from or in combination with any other equipment or
products.
A fixed charge established for each product will be imposed for all equipment returned
for warranty repair where Comtech EF Data Corporation cannot identify the cause of the
reported failure.
Exclusive Remedies
Comtech EF Data Corporation’s warranty, as stated is in lieu of all other warranties,
expressed, implied, or statutory, including those of merchantability and fitness for a
particular purpose. The buyer shall pass on to any purchaser, lessee, or other user of
Comtech EF Data Corporation’s products, the aforementioned warranty, and shall
indemnify and hold harmless Comtech EF Data Corporation from any claims or liability
of such purchaser, lessee, or user based upon allegations that the buyer, its agents, or
employees have made additional warranties or representations as to product
preference or use.
The remedies provided herein are the buyer’s sole and exclusive remedies. Comtech EF
Data shall not be liable for any direct, indirect, special, incidental, or consequential
damages, whether based on contract, tort, or any other legal theory.
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Getting Help
Contacting Comtech EF Data
Contact Comtech EF Data for:
•
Technical Support – Product support or training.
•
Customer Service – Information on returning an in‐warranty or out‐of‐warranty product for
upgrade or repair. Be prepared to provide the product model number and its serial
number.
Contact Comtech EF Data Customer & Technical Support during normal business hours (Monday
through Friday, 8 A.M. to 5 P.M Mountain Standard Time (MST)):
For:
Contact:
CRS‐170A
Technical
Support and
Service
Telephone
+1.480.333.4357
Email
[email protected]
Fax
+1.480.333.2500
Comtech EF
Data Web Site
Main Page
http://www.comtechefdata.com
Customer and
Technical Support
http://www.comtechefdata.com/support.asp
RMA
(Return Material
Authorization)
http://www.comtechefdata.com/rmaform.asp
Comtech EF Data Main Number
+1.480.333.2200
Mailing Address
2114 West 7th Street
Tempe, Arizona 85281 USA
Review the Warranty Policy before contacting Comtech EF Data Technical Support or
Customer Service.
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Returning a Product for Upgrade or Repair
Step
Task
1
Go to the Comtech EF Data Service page
(http://www.comtechefdata.com/service.asp) and read the Return Material
Authorization section in its entirety.
2
Request a Return Material Authorization Number:
• On the Comtech EF Data Service page: Select the Return Material
Authorization hyperlink.
• On the Comtech EF Data Support page
(http://www.comtechefdata.com/support.asp): Click [Send RMA Request]
(http://www.comtechefdata.com/rmaform.asp);
• Fill out the RMA form completely;
• Click [Send Email].
• Alternately:
o Send an e‐mail providing this same detailed information to Comtech EF
Data Customer Service ([email protected]).
o Contact Comtech EF Data Customer & Technical Support by phone or fax.
3
Pack the product in its original shipping carton and protective packaging.
4
Ship the product back to Comtech EF Data. Shipping charges should be prepaid.
Chapter 1. INTRODUCTION
1.1
Overview
Figure 1-1. CRS-180 70/140 MHz IF 1:1 Redundancy Switch
The CRS‐180 70/140 MHz IF 1:1 Redundancy Switch module, shown in Figure 1‐1, is a 50Ω,
70/140 MHz Tx‐Rx IF signal switch designed for use with IF satellite modems in a 1:1
configuration.
The Tx side switches the Online unit onto the transmit coaxial cable. The Rx side of the switch
uses power dividers to provide both demodulators with the same IF signal from the LNB, thus
reducing switching time.
The CRS‐180 is designed to support 1:1 redundancy for Comtech EF Data CDM‐625, CDM‐750,
CDM‐570, CDM‐700, CDM‐710, and CDM‐710G modems. Table 1‐1 summarizes the CRS‐180 1:1
IF Switch applications, including requirements for supporting data switching hardware and
software.
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Table 1-1. CRS-180 Application Summary
Modem
1:1 Data Switch
Other Information*
CDM-625
Built into the CDM-625
Firmware 1.1.1 or higher
CDM-750
Built into the CDM-750
Firmware 1.1.1 or higher
CDM-570
Built into the CDM-570
• Firmware 1.6.7 or higher
• Hardware Revision 3
CDM-570 IP Module
User-provided hub or Layer 2 switch
Firmware 1.5.4.2 or higher
CDM-700
Built into the CDM-700
• Firmware 1.1.6 or higher
• Hardware Revision 3
CDM-710
Built into the CDM-710
• Firmware 2.4.1 or higher
• Hardware Revision 3
CDM-710G
Built into the CDM-710G
Firmware 5.1.1 or higher
* Firmware updates are free and may be downloaded from the Comtech EF Data
web page. If a modem does not meet the hardware requirements, contact CEFD –
hardware revision upgrades must be performed at CEFD.
1.1.1
Modem Side Connectors
The modem side connectors, shown in Figure 1‐2 and outlined in the accompanying table, provide
all necessary external connections between the CRS‐180 70/140 MHz IF 1:1 Redundancy Switch
module and the specified Comtech EF Data modems.
Name
Ref Des
Connector Type
Function
RX A
J1
BNC
IF Input to Modem ‘A’
RX B
J2
BNC
IF Input to Modem ‘B’
TX A
J5
BNC
IF Output from Modem ‘A’
TX B
J6
BNC
IF Output from Modem ‘B’
Control A
J3
9-pin ‘D’ (female)
Control Interface with Modem ‘A’
Control B
J4
9-pin ‘D’ (female)
Control Interface with Modem ‘B’
Figure 1-2. CRS-180 – Modem Side Connectors
J6 TX B J5 TX A J3 Control A J2 RX B J1 RX A
J4 Control B
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1.1.2
Antenna Side Connectors
Two 50Ω female BNC connectors on the antenna side of the CRS‐180 70/140 MHz IF Switch
module provide the coaxial cable connections to the outdoor transmit and receive equipment.
Refer to Figure 1‐3 and the accompanying table for details.
Name
Ref Des
Connector Type
Function
RX
J7
BNC
IF Input
TX
J8
BNC
IF Output
Figure 1-3. CRS-180 – Antenna Side Connectors and Ground Lug
1.2
Functional Description
The CRS‐180 70/140 MHz IF 1:1 Redundancy Switch module performs the Tx and Rx coaxial
switching required for redundant modem operation with an outdoor BUC and LNB.
1.2.1
Operation with CDM-625/750/570/700/710/710G
The CRS‐180 is configured with two modems to form a complete 1:1 redundant modem system.
Within the CRS‐180, a redundancy controller continually monitors the status of faults for both
modems to determine which modem should be Online and Offline. The control cables between
the modems and the CRS‐180 include four signal groups:
•
First, serial full‐duplex communication lines are routed from one modem to the other
modem via the CRS‐180. Using these lines, this Online modem can interrogate the
Offline modem at regular intervals to determine its configuration. If a difference in
configuration is detected, the Online modem will reconfigure the Offline modem so that
the configurations are always synchronized. This process is entirely automatic – if the
Offline modem is replaced, it does not have to be manually reprogrammed to match the
Online modem.
•
Second, the Modem’s Unit, Tx and Rx faults signals from both modems are routed to the
CRS‐180. This allows the redundancy controller to always know the health status of both
modems.
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•
Third, the online/offline signals are routed from the CRS‐180 to each modem. Based on
the modem faults, the CRS‐180 will determine which modem should be Online and
Offline. In the event that both modems indicate faults through some malfunction, the
CRS‐180 switch will select, by default, Modem ‘A’.
•
Fourth, +12V is routed from each modem to the CRS‐180 for operational power. This
power from both modems is diode OR’d so that the switch remains active if power is
lost from one of the modems.
IF Switching – The CRS‐180 provides IF redundancy, but when switching occurs, it
accommodates more than just the IF signals. On the Rx side, the Rx IF signal from the LNB is split
in a power divider to continuously drive both the Online and Offline demodulator. The Offline
demodulator can then maintain lock so that it is ready to quickly assume Online status for
receive traffic when a switchover is required.
Data Switching is accomplished inside each modem, in the data interface itself. A ‘Y’ cable
connects both the Online modem and the Offline modem to the terrestrial data source.
Transmit data drives both modems in parallel so that the standby modulator is always ready to
come Online. Termination impedance for the modem line receivers is active in the Online
modem. On the Rx side of the interface, TRI‐STATE® control of the Offline modem line drivers
keeps the Offline modem from interfering with the Rx data traffic. Send timing output from the
Offline modem is also TRI‐STATE®1.
Manual Switching is enabled by the User via the Online modem, through its front panel or by
remote control.
Automatic Switching Selection is controlled by the User via the Online
modem. Then, from the CRS‐180, the User determines the conditions
that cause an automatic switchover using two DIP switches – Unit+Tx
and Unit+Rx – located on the antenna side of the CRS‐180 and labeled
Switch Conditions. This selection provides a great deal of flexibility in
the operation of the switch: the User can select between Modem Unit
faults only; Modem Unit faults or Receive Traffic faults; Modem Unit
faults or Transmit Traffic faults; or all three.
Also located on the antenna side of the CRS‐180 are two green LEDs that indicate which modem
is Online.
With the ‘bridging’ architecture of the CRS‐180 (whereby identical terrestrial data traffic signals
are routed to both Online and Offline modems), the redundancy controller can avoid
unnecessary switchovers. By examining the fault status of both modems, it can infer if the fault
is external to the system. For example, the CRS‐180 has been configured to switch following Unit
faults or Transmit Traffic faults, and the modems have been configured for external clock
operation. Now, suppose that the external equipment (network, multiplex, router, etc.) fails –
both the Offline and Online modems will now show a Transmit Traffic fault (No Clock Detected
from Terrestrial Port). The CRS‐180 Controller State Machine will see that both faults have
1 TRI‐STATE is a registered trademark of National Semiconductor.
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occurred at the same time (in fact, within a 0.5 second window), and infers that the fault is
external. Therefore, no unnecessary switchover is initiated.
1.2.1.1 1:1 IP Redundancy Data Switching – Functional Description
1.2.1.1.1 CDM-570 (with optional IP Module) Managed Switch or Router
Modes
•
Do not use the M&C Ethernet port (bottom RJ‐45 connector) when the optional
IP Module is installed.
•
All configuration changes can only be made to the Online Modem and will
require the User to “Save Parameters to permanent storage” to
ensure the configuration change is also applied to the Backup Modem.
Managed Switch (Ethernet Bridge) Mode: For the CDM‐570 in Managed Switch Mode (also
known as “Ethernet Bridge Mode”) the user MUST use an external Ethernet hub to insure that
traffic will continue after a switchover. If an Ethernet switch is used, there could be a several
minute outage while the Ethernet Switch “re‐learns” the correct output Ethernet port. Using a
“dumb” Ethernet hub allows LAN‐to‐WAN traffic to continue even after a switchover occurs
since both modems will be receiving the LAN traffic.
In Managed Switch Mode, both modems should be assigned a unique Management IP address
on the same subnet in order to share the parameter file.
Router Mode: For the CDM‐570 in Router Mode, the user should use an external Ethernet
switch. Router mode does not require a “dumb” hub as with Managed Switch Mode and, for
performance reasons, an Ethernet switch is highly recommended.
In Router Mode, both modems must be assigned a unique Management IP address on the same
subnet (172.18.10.21/24 and 172.18.10.22/24 as shown in Figure 1‐4 and Figure 1‐5). This is
used to share the param file. A Traffic IP address on the subnet must also be assigned
(172.18.10.20/24) in the Online modem.
Whichever modem is Online will assume the Traffic IP. When there is a switchover to the backup
modem, this modem will now assume the Traffic IP. As shown in Figure 1‐5, the backup modem
will also broadcast a “gratuitous ARP” that will tell all local devices to now associate a new MAC
address for the Traffic IP 172.18.10.20. Each device will update their ARP tables and traffic will
resume virtually instantaneously.
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Figure 1-4. CDM-570 1:1 IP Redundancy Router Mode – ‘A’ Online
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Figure 1-5. CDM-570 1:1 IP Redundancy Router Mode – Switchover (‘B’ Online)
1.2.1.1.2 CDM-625/750/700/710/710G Managed Switch Mode
A standard, user‐provided Ethernet Layer 2 Switch is needed when a CDM‐625, CDM‐750, CDM‐
700, CDM‐710, or CDM‐710G modem is configured for Managed Switch Mode (also known as
“Ethernet Bridge Mode”) terrestrial traffic.
A Layer 2 Switch is designed to limit the traffic that egresses each port by only sending Ethernet
packets out the port that the destination network device is located. The switch maintains a table
‐ known as the dynamic Content‐Addressable Memory (CAM) table ‐ that maps MAC addresses
to switch ports. When a packet arrives, in which an entry for that specific destination MAC is
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CDM-625/750/700/710/710G
CDM-
625/750/700/710/710G
CDM-625/750/700/710/710G
unknown to the switch, it sends the packet out all ports and waits for response packets in an
attempt to identify which port that particular MAC resides. Once the device responds, the
switch is able to map the MAC to the port in the CAM table.
Any new arriving packets destined for that MAC address will be forwarded only out the port
identified in the CAM table. Most switch CAM tables do have a flush or timeout value, but is
normally set to a very high number to limit the amount of times the switch has to broadcast a
packet out all ports. It is also important to note that CAM entries for a specific port are cleared
when a port link goes down.
Figure 1-6. CDM-625/750/700/710/710G 1:1 IP Redundancy Managed Switch Mode
Figure 1‐6 shows a Managed Switch Mode 1:1 IP Redundancy setup with the Ethernet data interface
of both modems connected to a Layer 2 Switch. Both modems are operational – Modem ‘A’ is Online
and connected to Port 4 of the Layer 2 Switch. Modem ‘B’ is Offline and connected to Port 3 of the
Layer 2 Switch, but the Ethernet link is not active because only the Online modem will have an active
Ethernet data interface. Also, Local PC ‘A’ is connected to Port 1 of the Layer 2 Switch.
When Ethernet traffic is sent from Local PC ‘A’ across the satellite link to remote PC ‘B’, the
Layer 2 Switch will “learn” the MAC addresses of both PCs and will have these dynamic entries in
its CAM Table:
Port 1 MAC 00‐00‐00‐00‐00‐11 (Local PC ‘A’)
Port 3 No entries, port down
Port 4 MAC 00‐00‐00‐00‐00‐22 (Remote PC ‘B’)
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CDM-625/700/710/710G/750
CDM-625/750/700/710/710G
CDM-625/750/700/710/710G
Figure 1-7. CDM-625/750/700/710/710G 1:1 IP Redundancy Managed Switch Mode –
Switchover
As shown in Figure 1‐7, in the event of a fault occurring on the Online Modem ‘A’, the following
will occur:
•
Modem ‘A’ goes offline and disables its Ethernet data interface.
•
Simultaneously, Modem ‘B’ goes online and enables its Ethernet data interface.
•
Layer 2 Switch ‘A’ senses that Port 4 is no longer active and clears the CAM table entries
for that port.
•
When the next Ethernet packet from Local PC ‘A’ destined for Remote PC ‘B’ arrives at
Switch ‘A’, there is no CAM entry for the PC ‘B’ MAC, so it will be broadcast to all active
ports.
•
When the next Ethernet packet from Remote PC ‘B’ arrives at Switch ‘A’, Switch ‘A’
dynamically adds the PC ‘B’ MAC to the CAM table for Port 3.
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Note the following:
1. The Managed Switch Mode method of redundancy is intended to be equivalent to pulling
the Ethernet cable from one port and putting it into a different port on the same switch.
2. For the CDM‐625 modem: The user may configure one of the CDM‐625’s four available
10/100 Ethernet ports for M&C Ethernet. As configured in Dedicated Management Port
Mode, when the modem is offline the M&C‐designated port remains functional and
available for operation, while the three remaining ports are unavailable. Otherwise, if none
of the 10/100 Ethernet ports are reserved for M&C operation, all four ports become
unavailable when the modem is offline.
This configuration must be enabled on both modems.
Refer to the CDM‐625 Advanced Satellite Modem Installation and Operation Manual for
instructions to configure one of the four 10/100 Ethernet ports for each modem for remote
Ethernet M&C.
Dedicated Management Port Mode is not configurable for use when the
optional IP Packet Processor is installed and enabled. With the IP Packet
Processor enabled, as a means to avoid Ethernet Networking Loops, only one
of the CDM‐625’s four 10/100 Ethernet Ports is used for each modem at any
given time.
3. For the CDM‐750/700/710/710G modems: When the modem is offline, although all
GigE port(s) are unavailable, the M&C Ethernet port remains functional and available for
operation.
4. Installation must use a true switching device, not a hub device.
1.2.1.1.3
CDM-625 (with Optional IP Packet Processor) – Router Mode
All configuration changes can only be made to the Online Modem and will require
the User to “Save Parameters to permanent storage” to ensure the configuration
change is also applied to the Backup Modem.
For the CDM‐625 with the optional IP Packet Processor installed and enabled and the
configuration set for Router Mode, the user needs to provide an external Ethernet switch.
In Router Mode, both modems must be assigned a unique Management IP address on the same
subnet (172.18.10.21/24 and 172.18.10.22/24 as shown in Figure 1‐8 and Figure 1‐9). This is
used to share the param file. A Traffic IP address on the subnet must also be assigned
(172.18.10.20/24) in the online modem.
The Traffic IP Address must be different from either Management IP Address.
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Whichever modem is online will assume the Traffic IP. When there is a switchover to the backup
modem, this modem will now assume the Traffic IP.
Per Figure 1‐9, the backup modem will also broadcast a “gratuitous ARP” which will tell all local
devices to now associate a new MAC address for the Traffic IP 172.18.10.20. Each device will
update their ARP tables and traffic will resume virtually instantaneously.
Figure 1-8. CDM-625 1:1 IP Redundancy Router Mode – ‘A’ Online
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Figure 1-9. CDM-625 1:1 IP Redundancy Router Mode – Switchover (‘B’ Online)
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1.3
Summary of Specifications
Equipment Type
IF 1:1 Redundancy Switch
Manufacturer
Comtech EF Data, Tempe, Arizona
Comtech EF Data
Modems Supported
• CDM-625 Advanced Satellite Modem (18 kbps – 25 Mbps)
• CDM-750 Advanced High-Speed Trunking Modem
• CDM-570 70/140 MHz Satellite Modem
• CDM-700 70/140 MHz Satellite Modem
• CDM-710 70/140 MHz Broadcast Satellite Modem
• CDM-710G 70/140 MHz High-Speed Satellite Modem
Operating Modes
• Fully Automatic under control of supporting 1:1 switch.
• Manual under control of supporting 1:1 switch.
Architecture
• Full bridging architecture with configuration synchronization.
• Tx switching guarantees the Offline modem is muted at least 60 dB down.
• Rx IF signal fed to both Online and Standby units.
Switch Conditions
Tx/Rx switching follows state of supporting data switching via control input from data
switch.
IF Switching/
Splitting
• Tx IF: Switched by RF relay (1.5 dB max loss, 40 dB min ON/OFF isolation)
• Rx IF: Passive power splitting (4dB max loss)
Tx-Rx Isolation
40 dB min, 50 - 190 MHz
IF Impedance
Optimized for 50Ω (> 10 dB return loss on external IF ports), 75Ω supported with the
use of external RF transformers (included).
IF Connectors
50Ω BNC Female
IF Frequency Range
50 to 190 MHz
Weight
1.1lbs (0.5kg)
Dimensions
1.7 H x 5.7 W x 4.1 D inches
(43 H x 143 W x 104 D mm [excluding connectors])
19-inch rack mounting kit available.
Power requirements
1 Watt maximum
+12 volts DC @ 80 mA (max)
(Power supplied by modems)
Approvals
‘CE’ as follows:
•
EMC
•
Safety
Chapter 2. INSTALLATION
2.1
Unpacking and Inspection
The CRS‐180 70/140 MHz IF 1:1 Redundancy Switch module and its Installation and Operation
Manual were packaged and shipped in a reusable cardboard carton containing protective foam
spacing.
This equipment contains parts and assemblies sensitive to damage by Electrostatic
Discharge (ESD). Use ESD precautionary procedures when handling the equipment.
Once opened, inspect the shipment:
Step
Task
1
Keep all shipping materials for storage or reshipment.
2
Check the packing list to ensure the shipment is complete.
3
Inspect the equipment for any possible damage incurred during shipment. Contact
the carrier and Comtech EF Data immediately to submit a damage report if damage
is evident.
4
Review this manual and the pertinent modem’s Installation and
Operation Manual carefully to become familiar with 1:1 redundancy
operation.
5
Proceed to Sect. 2.2 Mounting.
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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2.2
Mounting
Figure 2-1. KT/11708 Mounting Panel Kit (for horizontal or vertical mounting)
The CRS‐180 is designed to be freestanding, or mounted at the rear of the rack containing the
modems using the available Comtech EF Data Mounting Panel Kit KT/11708.
As shown in Figure 2‐1, this kit allows the module to be mounted into the rack horizontally or
vertically. Otherwise, because of the module’s small size and weight, the user may choose to let
the module hang freely, supported by the interfacing cables.
Chapter 3. MODEM AND SWITCH
CONFIGURATION
3.1
Overview
In order to avoid damage to the modems and CRS‐180 switch, it is important to follow
this sequence of configuration:
•
First, configure the modems for 1:1 redundant operation as outlined in this
chapter in Sect. 3.2 through Sect. 3.5.
•
Second, once the modems have been properly configured for 1:1 redundant
operations, set the DIP switches on the CRS‐180 to the correct modem selection,
as outlined in this chapter in Sect. 3.6 CRS‐180 Switch DIP Settings.
•
Third, once the modem and switches have been properly configured, connect
the cables between the powered OFF modems and switch as outlined in Chapter
4. CABLES AND CONNECTIONS.
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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3.2
Configuring CDM-625s for 1:1 Redundancy
CDM‐625 Advanced Satellite Modem Installation and Operation Manual
(CEFD P/N MN‐CDM625)
The CDM‐625 Advanced Satellite Modem automatically detects if it is connected to a 1:1
redundancy system – the steps required to configure both modems are therefore minimal, with
some exceptions:
•
If the CDM‐625 has the optional IP Packet
Processor installed and enabled, 1:1
Redundancy is controlled from the CDM‐625
Web Server Interface Redundancy page.
When both the traffic and backup
modems are equipped with the optional IP
Packet Processor and are connected to the
CRS‐180 L‐Band 1:1 Redundancy Switch),
there is no need to use the drop‐down
menu here, as Packet Processor Redundancy is enabled automatically.
If it is desired to operate either modem outside of the redundant setup as a standalone
unit, use the drop‐down menu to select Packet Processor Redundancy for that specific
modem as Disabled.
•
If terrestrial data is not Ethernet and CnC will not be used, then no modem 1:1
redundancy configuration is needed. Otherwise, if either apply, refer to the sections that
follow.
3.2.1
User Remote Ethernet M&C Interface
The user may configure one of the CDM‐625’s four available 10/100 Ethernet ports for M&C
Ethernet. As configured in Dedicated Management Port Mode, when the modem is offline the
M&C‐designated port remains functional and available for operation, while the three remaining
ports are unavailable. Otherwise, if none of the 10/100 Ethernet ports are reserved for M&C
operation, all four ports become unavailable when the modem is offline.
This configuration must be enabled on both modems.
Refer to the CDM‐625 Advanced Satellite Modem Installation and Operation Manual for
instructions to configure one of the four 10/100 Ethernet ports for each modem for remote
Ethernet M&C.
Dedicated Management Port Mode is not configurable for use when the optional IP
Packet Processor is installed and enabled. With the IP Packet Processor enabled, as a
means to avoid Ethernet Networking Loops, only one of the CDM‐625’s four 10/100
Ethernet Ports is used for each modem at any given time.
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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3.2.2
Carrier-in-Carrier® Redundancy Configuration
If Carrier‐in‐Carrier® (CnC) is utilized, the CnC control setting must be set to Redundancy mode
using the CDM‐625 front panel menus.
Configuration of the CnC control setting for CDM‐625 1:1 Redundancy is as follows:
Step
Procedure
1
From the top-level SELECT: menu, navigate each menu level using the ◄► arrow keys and
the ENTER key until the PMSI control mode screen appears as follows:
SELECT: Configuration Æ CnC Æ PMSI-control
CnC PMSI mode: Redundancy
(Idle, Redundancy, Talk, Listen) (v)
From the CnC PMSI mode screen, use the ▲ ▼ arrow keys to select Redundancy, and then
press ENTER.
2
The two CDM-625s will now need to be connected together via use of a 1:1 PMSI cable (note
that this cable bypasses the CRS-180).
Chapter 4. CABLES AND CONNECTIONS.
The Pre-Mapped Symbol Interface (PMSI) is a function associated with DoubleTalk® Carrier-
in-Carrier® that permits the modulator in a selected unit to provide a direct copy of its output (the
outbound interferer) to the second modem. The other modem may then choose to take the
PMSI signal and use it for its own CnC reference. In this 1:1 redundancy, the PMSI is an
RS-485 multi-drop bus system where one device transmits and the other device on the multi-
drop bus is configured to receive.
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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3.3
CDM-750 Operation in 1:1 Redundancy
CDM‐750 Advanced High‐Speed Trunking Modem Installation and Operation Manual
(CEFD P/N MN‐CDM750)
The CDM‐750 Advanced High‐Speed Trunking Modem automatically detects if it is connected to
a 1:1 redundancy system. With both modems automatically configured for 1:1 operation, the
online modem keeps the offline modem updated as online modem configuration changes
occur.
The user can also manually ‘force’ backup of the online modem. Use the CDM‐750 front panel
to select the Utility X 1:1 screen:
Press ENTER key to force Unit into
Standby (1:1 only)
If the unit is part of a 1:1 redundant pair and this unit is currently online, press ENTER to force
the current unit to switch to standby mode.
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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Notes:
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3.4
Configuring CDM-570s for 1:1 Redundancy
CDM‐570/CDM‐570L/CDMR‐570L Satellite Modem Installation and Operation
Manual (CEFD P/N MN/CDM570L.IOM)
For correct operation of the CRS‐180, the CDM‐570 Satellite Modems must have the
following installed:
•
Base Modem Firmware Version 1.6.7 (or higher)
•
IP Module Firmware Version 1.5.4.2 (or higher)
•
Hardware Revision 3
•
This manual also presumes that the CDM-570 has been factory-configured
for 50Ω Rx and Tx operation.
If the modems do not meet this requirement, contact Comtech EF Data. Firmware
updates are free and may be downloaded from the CEFD web page. Hardware
revision upgrades must be performed at CEFD.
CDM-570 Front Panel
Serial console Command Line Interface (CLI)
Figure 3-1. CDM-570 Configuration Interfaces
Because the modem automatically detects if it is connected to a 1:1 redundancy system, the
steps required to configure both modems are minimal. Use the modem’s front panel to fully
configure, monitor, and control the modem operation. The front panel keypad and display are
used to display all available options. Nested menus display all prompts needed by the User to
carry out a required action. Refer to the pertinent modem’s user manual for detailed
configuration information.
Alternately, configuration, monitoring and control of redundant systems is possible via remote
means over an RS‐485 multi‐drop bus using the Serial console Command Line Interface, where
data is transmitted in asynchronous serial form using ASCII characters (see Figure 3‐1). Refer
back to the modem manual for detailed information on either methodology.
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3.4.1
IP Redundancy Configuration
Setup of a CDM‐570 1:1 IP Redundancy System, using the CLI, is as follows:
Step
Procedure
1
The two modems will need an Ethernet connection to each other through a Layer 2 switch
(preferred) or hub.
2
Before connecting the modems to the CRS-180, you will need to first configure the following
CDM-570 IP module settings:
•
Redundancy Configuration Æ 1:1 Redundancy set to DISABLED.
•
Administration Æ Working Mode: Both modems need to be set to the same
Working Mode.
•
Administration Æ Features: Both modems need to have the same IP Option
Feature set.
3
On both modems, enter a unique IP Address that is on the same subnet (Interface
Configuration Æ Ethernet Interface Æ IP Address). Verify that you can ping from one
modem to the other (Operations and Maintenance Æ Diagnostics Æ Ping).
4
On both modems, set Redundancy Configuration Æ 1:1 Redundancy to ENABLED. Save
Parameters to permanent storage and power down both modems.
5
Connect the modems to the CRS-180..
CDM‐570/CDM‐570L/CDMR‐570L Satellite Modem Installation and Operation
Manual (CEFD P/N MN/CDM570L.IOM): Sect. H.6 Cabling with the CDM‐570 IF.
6
While monitoring the Serial console CLI on both modems, observe the following after powering
on both modems at the same time (also observe the CRS-180 Online LEDs to see which
modem is the Online modem).
Online modem CLI displays:
1:1 Redundancy (Auto Detected)
Redundancy: PARAM File Connection Established.
Redundancy: Sending PARAM File...
Offline modem CLI displays:
1:1 Redundancy (Auto Detected)
Redundancy: Received PARAM File...
Writing 5447 bytes to PARAM file on Flash
7
On the Online modem, select the Redundancy Configuration menu (Figure 3-2). Observe that
the correct IP Address/Mask is displayed for the Local and Redundant Unit. You will then need to
set the Traffic IP Address/Mask (this also needs to be in the same subnet as the Management IP
addresses).
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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Figure 3-2. CDM-570 CLI 1:1 Redundancy Configuration screen
All configuration changes can only be made to the Online CDM‐570 and will
require the user to “Save Parameters to permanent storage” to
ensure the configuration change is also applied to the Backup CDM‐570.
3.4.2
Non-IP Redundancy Configuration
Setup of the CDM‐570 modems for 1:1 Redundancy, when the terrestrial data type is non‐
Ethernet (i.e. RS422, G.703), is as follows:
Step
Procedure
1
On both modems, Enable 1:1 Redundancy:
Redundancy Configuration Æ 1:1 Redundancy set to ENABLE.
2
Connect all cables – including the control cable, IF cable and data ‘Y’cables – to the modems
and the CRS-180.
Chapter 4. CABLES AND CONNECTIONS
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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3.5
Configuring CDM-700s/CDM-710s/CDM-710Gs for 1:1 Redundancy
•
CDM‐700 Satellite Modem Installation and Operation Manual
(CEFD P/N MN/CDM700.IOM)
•
CDM‐710 Broadcast Satellite Modem Installation and Operation Manual
(CEFD P/N CDM710.IOM)
•
CDM‐710G Satellite Modem Installation and Operation Manual
(CEFD P/N MN‐CDM710G)
For correct operation of the CRS‐180, the CDM‐700, CDM‐710, and CDM‐710G
modems must have the following installed:
•
For the CDM‐700:
► Firmware Version 1.1.6 (or higher)
► Hardware Revision A (chassis with round‐buttoned keypad)
•
For the CDM‐710:
► Firmware Version 2.4.1 (or higher)
► Hardware Revision A (chassis with round‐buttoned keypad)
•
For the CDM‐710G:
► Firmware Version 5.1.1 (or higher)
If the modems do not meet this requirement, contact Comtech EF Data. Firmware
updates are free and may be downloaded from the CEFD web page. Hardware
revision upgrades must be performed at CEFD.
Note that Hardware upgrades are possible only for the Rev. A chassis and later
versions of the CDM‐700/710 – 1:1 redundancy operation is not available with
hardware prior to Rev. A.
Use each modem’s front panel to fully configure, monitor, and control the modem operation.
The front panel keypad and display are used to display all available options. Nested menus
display all prompts needed by the User to carry out a required action. Refer to the pertinent
modem’s user manual for detailed configuration information.
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3.5.1
IP Redundancy Configuration
Setup of the CDM‐700/CDM‐710/CDM‐710G modems for 1:1 IP Redundancy (i.e., when the
terrestrial data type is GigE) is as follows:
Step
Procedure
1
Before connecting the modems to the CRS-180, you will need to first configure the
following IP module settings on the modem. From the modem front panel:
CONFIG Æ AUX (Redundancy Mode) Æ ENA/DIS set to Disable.
2
On both modems, set the redundancy to the Enable state:
CONFIG Æ AUX (Redundancy Mode) Æ ENA/DIS set to Enable.
Press ENTER to save parameters to flash memory
3
Connect all cables – including the control cable, IF cable and data cables – to the modems
and the CRS-180. Additionally, both modems will need an Ethernet connection to each other
through a Layer 2 switch.
Chapter 4. CABLES AND CONNECTIONS
4
Verify that one modem is ONLINE by the front panel LEDs; also verify that the ONLINE
LEDs for the CRS-180 indicate the same online state as the modems.
All configuration changes can only be made to the Online Modem and will
require the user to “Save Parameters to permanent storage” to
ensure the configuration change is also applied to the Backup Modem.
3.5.2
Non-IP Redundancy Configuration
Setup of the CDM‐700/CDM‐710/CDM‐710G modems for 1:1 Redundancy when the terrestrial
data type is non‐Ethernet (i.e. HSSI, G.703) is as follows:
Step
Procedure
1
On both modems, set the redundancy to the Enable state:
CONFIG Æ AUX (Redundancy Mode) Æ ENA/DIS set to Enable.
2
Connect all cables – including the control cable, IF cable and data ‘Y’cables – to the modems
and the CRS-180.
Chapter 4. CABLES AND CONNECTIONS
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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3.6
CRS-180 Switch DIP Settings
The ‘Switch Conditions’ DIP switches are set depending upon the type of Tx or Rx
traffic conditions resultant of switchover. Some modems have additional settings or
alarm masks that affect conditions – refer to the pertinent modem manual for
detailed explanations.
Figure 3‐3 shows the DIP switches for setting ‘Switch Conditions’ on the Antenna Side of the
CRS‐180 70/140 MHz IF 1:1 Redundancy Switch. Table 3‐1 illustrates the ‘Switch Conditions’ DIP
switch settings that determine switchover functionality for a given redundancy configuration.
Table 3-1. CRS-180 DIP Switch Settings
‘Switch Conditions’ DIP Settings
DIP
Left Switch
Right Switch
Result
Down (Off)
Down
Switchover upon a Unit fault
Up
Down
Switchover upon a Unit or Tx Traffic fault
Down
Up
Switchover upon a Unit or Rx Traffic fault
Up
Up
Switchover upon a Unit or Tx Traffic or Rx Traffic fault
Figure 3-3. CRS-180 Antenna Side – DIP Switches
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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Notes:
Chapter 4. CABLES AND
CONNECTIONS
4.1
Overview
When assembling a Comtech EF Data 1:1 Redundancy System, in addition to purchasing the
desired modem pair (one Redundant modem, one Traffic modem), the user must also purchase a
redundancy kit tailored to that modem choice. This kit provides – in addition to the CRS‐180
70/140 MHz IF 1:1 Redundancy Switch module – all cables and components required for
interconnection of the redundant configuration to various interfaces (i.e., control, IF, and data),
excluding Ethernet, which requires user‐provided cables and Layer 2 switching.
The modem‐specific sections in this chapter identify the redundancy kit required for that
particular configuration. The individual redundancy kit item(s) required to assemble specific
interface examples are further identified.
•
It is physically impossible to connect all available data interface solutions within
a single 1:1 redundancy system at a given time. For example, when using the
CDM‐625 in a 1:1 system, the user is unable to establish an ASI interface
together with a G.703 Unbalanced interface, or an RS‐422/232 interface
together with an HSSI interface. Therefore, the quantities of cables and
accessories furnished with each redundancy kit have been predetermined with
this operational limitation taken into consideration.
•
The type of 1:1 Y‐Splitter cable required for modem‐to‐user interconnection
depends on the user’s data interface. It is essential to ensure that the control
and IF connections, both Rx and Tx, are made correctly.
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.2
Cabling to the CDM-625
1. For information on the CDM‐625’s 1:1 auto‐enable functionality, see:
• Chapter 3. MODEM AND SWITCH CONFIGURATION
• CDM‐625 Advanced Satellite Modem Installation and Operation Manual
(CEFD P/N MN‐CDM625)
2. For information on the cables and cable assemblies specified in this section, see:
• Appendix A. CABLE DRAWINGS
4.2.1
CRS-180 Æ CDM-625 Control and IF Interface Cabling Kit KT-0000159
Terrestrial data interface components/kits must be ordered separately. See Sect.
4.2.4 for CDM‐625 terrestrial data interface configuration and connection
examples and details.
Comtech EF Data’s KT‐0000159 1:1 Redundancy Control/IF Interface Cabling Kit is required for
control and 70/140 MHz switch‐to‐modem cabling connections:
KT-0000159 1:1 Redundancy Control / IF Interface Cabling Kit (CRS-180 Æ CDM-625)
CEFD Part No.
Qty Description
Used For
Ch. 4
Fig
PL/11560-1
1
CRS-180 Switch – Top Assembly
1:1 Redundancy
4-1
4-2
CA/WR9378-4
2
Control Cable – Universal, DB-9M Æ DB-9M, 4’ Modem Æ Switch Control
4-1
PL/0946-1
4
IF (Tx/Rx) Coax Cable – 50Ω Type ‘BNC’, 4’
Modem Æ Switch IF
Interface
4-2
XF/BNC-MF-50-75
2
Transformer, 50-75Ω, 2-200 MHz, BNC, M/F
User Æ Switch IF
Interface
4-2
See Sect. 4.2.2 and Figure 4‐1 in this chapter for details of the CDM‐625 Modem‐to‐Switch
Control Interface connection, and Sect. 4.2.3 and for details of the CDM‐625 Modem‐to‐Switch
IF Interface connections. These figures illustrate how to connect a pair of CDM‐625 modems
together with the CRS‐180 70/140 MHz IF 1:1 Redundancy Switch module; the table that
accompanies each figure lists the cables provided in KT‐0000159 for this initial setup.
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.2.2
Modem-to-Switch Control Interface Connection
When connecting the Control cable between the CRS‐180 and the modems, ensure
that screw locks on the ‘D’ type connectors are securely fastened. This will prevent
the accidental unmating of the cable, particularly when a standby unit is being
removed or replaced.
CEFD Part No.
Qty
Description
CA/WR9378-4
2
Control Cable – Universal, DB-9M, 4’
Figure 4-1. CDM-625 Modem-to-Switch Control Connections
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.2.3
Modem-to-Switch IF Interface Connection
EXAMPLE: The Tx IF from ‘ Modem A’ connects to the Tx IF port ‘J5 | Tx A’ on the CRS‐180;
similarly, the Tx IF from ‘Modem B’ connects to the Tx IF port ‘J6 | Tx B’ on the CRS‐180.
The same logic applies for the Rx IF connections. It is important to note that failure to observe
this requirement will result in system malfunction.
Item
CEFD Part No.
Qty
Description
1
PL/0946-1
4
IF Coax Cable, 50Ω
2
XF/BNC-MF-50-75
2
Transformer, 50-75Ω, 2-200 MHz, BNC, M/F
Figure 4-2. CDM-625 Modem-to-Switch 70/140 MHz IF Connections
Modem‐to‐Switch IF Connection Notes:
1. Excluding modems, all components depicted in Figure 4‐1 are provided in the KT‐0000159 CDM‐
625 70/140 MHz IF 1:1 Redundancy Kit (see Sect. 4.2.1).
2. 50‐75Ω transformers (Item 2) are required on the Rx (J7) and Tx (J8) connectors, located on
the antenna side of the switch, when the user supplies a 75Ω Rx/Tx connection.
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.2.4
Modem-to-User Data Interface Connections and Examples
The data cables and components identified in each of the examples that follow in
this section must be purchased separately, as required.
In addition to the control and IF switch‐to‐modem cabling shown previously, a number of data
interface configurations are available for the CDM‐625. The block diagram shown in Figure 4‐3 is
typical for the examples shown in Sects. 4.2.4.1 through 4.2.4.8.
With the exception of the 10/100 Ethernet Interface configuration shown in Figure 4‐12, where
customer‐supplied Ethernet cables and Layer 2 switches are used, one cable/component set per
1:1 modem pair is required for each user interface (see examples for specified quantities).
Figure 4-3. CDM-625 Block Diagram: User Æ Modem Æ Switch Æ Traffic
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.2.4.1 RS-422/232 Interface Example
CEFD Part No.
Qty
Description
CA/RB10461-1
1
Cable – 1:1 ‘Y’ Splitter, (2X) DB-25M Æ DB-25F
Figure 4-4. CDM-625 RS-422/232 1:1 Example
4.2.4.2 HSSI Interface Example
CEFD Part No.
Qty
Description
CA/RB10461-1
1
Cable – 1:1 ‘Y’ Splitter, (2X) DB-25M Æ DB-25F
PL-0000307
1
CIC-60 – Interconnect Converter, DB-25M Æ HD-50F (SCSI-II)
Figure 4-5. CDM-625 HSSI 1:1 Example
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.2.4.3 ASI Interface Example
KT/12579 ASI 75Ω Interface Kit
CEFD Part No.
Qty
Description
CA/BNC75OHM
4
Cable – IF BNC, 75Ω, 1’
RF/SA32KC-IN/OUT
2
Combiner – 2-way w/Bracket, 0.25-300 MHz, 75Ω BNC
Figure 4-6. CDM-625 ASI 1:1 Example
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.2.4.4 Quad E1 Interface Example
The G.703 Balanced and Auxiliary G.703 DB‐9F single connectors are used for Quad E1
operation. Note the following:
1. As shown in Figure 4‐7, the CA‐0000071 ‘Y’ Cable provides for two ports of E1 (i.e., Ports 1/2
‐or‐ Ports 3/4).
2. If the user desires three or four separate ports of E1 (i.e., Port 1 and Port 2 ‐or‐ Port 3 and
Port 4), then optional adapter cables may be purchased from Comtech EF Data to adapt the
G.703 Balanced and Auxiliary G.703 DB‐9F single connector pairs to outgoing Quad E1
connector pairs as follows:
Cable (CEFD
Part No.)
Converts (1) 9-pin Type ‘D’ (DB-9F) paired connection (e.g., Modem A AND
Modem B G.703 Balanced connector pair –or– Modem A AND Modem B
Auxiliary G.703 connector pair) to:
See
App. A
Fig.
CA-0000163
(2) 15-pin Type ‘D’ (DB-15F) connectors
A-9
CA-0000164
(2) RJ-48 female connectors
A-10
KT-0000122
(4) BNC 75Ω female connectors – (2) Tx, (2) Rx
A-11
All three cabling options plug into the single ‘To User’ connector side of each CA‐0000071 ‘Y’
Splitter cable used.
Figure 4-7. CDM-625 Quad E1 1:1 Example
CEFD Part No.
Qty
Description
CA-0000071
2 Note 1
Cable – 1:1 ‘Y’ Splitter, (2X) DB-9M Æ DB-9F, 8”
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.2.4.5 G.703 Balanced Interface Example
CEFD Part No.
Qty
Description
CA-0000071
1
Cable – 1:1 ‘Y’ Splitter, (2X) DB-9M Æ DB-9F, 8”
Figure 4-8. CDM-625 G.703 Balanced 1:1 Example
4.2.4.6 G.703 Unbalanced Interface Example
KT/10553-1 G.703 Unbalanced Interface Kit
CEFD Part No.
Qty
Description
CA/BNC75OHM
4
Cable – IF BNC, 1’
CN/BNC-TEE-JPJ
2
T-Adapter, 50Ω BNC
Figure 4-9. CDM-625 G.703 Unbalanced 1:1 Example
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.2.4.7 Overhead Interface Example
CEFD Part No.
Qty
Description
CA-0000070
1
Cable – 1:1 ‘Y’ Splitter, (2X) HD-44M Æ HD-44F, 8”
Figure 4-10. CDM-625 Overhead 1:1 Example
4.2.4.8 Engineering Service Channel (ESC) Interface Example
CEFD Part No.
Qty
Description
CA-0000071
1
Cable – 1:1 ‘Y’ Splitter, (2X) DB-9M Æ DB-9F, 8”
Figure 4-11. CDM-625 ESC 1:1 Example
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.2.4.9 10/100 Ethernet Interface Examples
4.2.4.9.1
Managed Switch Mode (with/without IP Packet Processor)
Figure 4‐12 shows a block diagram and cabling example of a CDM‐625 1:1 modem configuration
using the 10/100 Ethernet Interface in Managed Switch (Ethernet Bridge) Mode. Direct connection
is made via one to four RJ‐45 ports using user‐provided Ethernet cables and Layer 2 switches, so
no cables or kit is required. The cabling example depicts all four Ethernet ports used.
CDM-625 Block Diagram: 10/100 Ethernet Interface – Managed Switch Mode
Figure 4-12. CDM-625 10/100 Ethernet 1:1 Example – Managed Switch Mode
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.2.4.9.2
Router Mode (Optional IP Packet Processor Required)
Figure 4‐13 shows a block diagram and cabling example of a CDM‐625 1:1 modem configuration
using the 10/100 Ethernet Interface in Router Mode, with the optional IP Packet Processor
installed and enabled. Direct connection is made via only one of four RJ‐45 ports using user‐
provided Ethernet cables and a Layer 2 switch, so no cables or kit is required.
CDM-625 Block Diagram: 10/100 Ethernet Interface – Router Mode
Figure 4-13. CDM-625 10/100 Ethernet 1:1 Example – Router Mode
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.2.4.9.3
Data Interface Connections using IP Sub-Mux
Chapter 15. IP SUB‐MUX in CDM‐625 Advanced Satellite Modem Installation and
Operation Manual (CEFD P/N MN‐CDM625)
Sub‐Mux is a secondary framing structure which combines one to four ports of 10/100 Ethernet
(IP) traffic – as shown in Figure 4‐12 – with any currently available combination of framing and
interface type (excluding IP itself) – as shown in Figure 4‐4 through Figure 4‐11. The composite
data rate to the modulator and from the demodulator is referenced to the primary, non‐IP data
interface rate by a specific ratio selected by the user.
4.2.4.10 PMSI Interface Example
The Pre‐Mapped Symbol Interface (PMSI) is a function associated with DoubleTalk® Carrier‐in‐
Carrier® (CnC®) that permits the modulator in a selected unit to provide a direct copy of its output
(the outbound interferer) to the offline modem in a 1:1 pair. The offline modem will then take the
PMSI signal and use it for its own CnC® reference. The PMSI is an RS‐485 point‐to‐point bus system
where one device transmits, and the other device on the bus is configured to receive. See Figure
4‐14 to connect and secure the CDM‐625 Multi‐drop CnC® Plus 1:1 Cable CA‐0000276 (2X DB‐
9M, 1’), required between the Redundant Modem and each Traffic Modem using CnC.
The CA-0000276 Multi-Drop CnC PLUS 1:1 Cable bypasses the CRS-180 70/140
MHz IF 1:1 Redundancy Switch.
If CnC® is enabled with a CDM‐625 1:1 pair, before any switch configurations can be made,
specific configuration steps must be taken with each CDM‐625 to ensure proper operation of
the pair within a configured CRS‐180 1:1 Redundancy System.
Chapter 3. MODEM AND SWITCH CONFIGURATION
CEFD Part No.
Qty
Description
CA-0000276
1
CDM-625 Data Cable – Shielded, Multi-drop CnC® Plus, 1:1, (2X) DB-9M, 1’
Figure 4-14. CDM-625 PMSI 1:1 Example
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.3
Cabling to the CDM-750
1. For information on the CDM‐750’s 1:1 auto‐enable functionality, see:
• Chapter 3. MODEM AND SWITCH CONFIGURATION
• CDM‐750 Advanced High‐Speed Trunking Modem Installation and Operation
Manual (CEFD P/N MN‐CDM750)
2. For information on the cables and cable assemblies specified in this section, see:
• Appendix A. CABLE DRAWINGS
4.3.1
Modem-to-Switch Control and IF Interface Connection
Figure 4‐15 shows the control and IF connections for the CDM‐750 to the CRS‐180. All control and
IF components are provided for the CDM‐750 in the KT‐0000188 CRS‐180 70/140 MHz IF 1:1
Redundancy Kit.
Note the following:
1. Use of the XF/BNC‐MF‐50‐75 transformers (Item 2) on the antenna side Rx (J7) and Tx (J8)
connectors are required only when the user supplies a 75Ω Rx/Tx antenna connection.
2. Use of the XF/BNC‐MF‐50‐75 transformers (Item 2) on the switch‐to‐modem side Rx (J1, J2)
and Tx (J5, J6) connectors are always required in order to accommodate the CDM‐750’s 75Ω
Rx/Tx operability.
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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KT-0000177 70/140 MHz IF 1:1 Redundancy Kit (CRS-180 Æ CDM-750)
Item
CEFD Part No.
Qty
Description
1
PL/11560-1
1
Top Assy, CRS-180 70/140 MHz IF 1:1 Redundancy Switch
2
XF/BNC-MF-50-75
(Notes 1,2)
6
Transformer, 50-75Ω, 2-200 MHz, BNC, M/F
3
CA/WR9378-4
2
Control Cable, Universal, DB-9M, 4’
4
PL/0813-4
4
Cable, Special, 75Ω IF BNC, 4’
Figure 4-15. CDM-750 Modem-to-Switch Control & IF Connections – KT-0000160
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.3.2
Modem-to-User Data Interface Connections and Examples
In addition to the control and IF switch‐to‐modem cabling shown in the previous section, a
number of data interface configuration kits are available for use with the CDM‐750.
4.3.2.1 RJ-45 Gigabit Ethernet Data Interface Example
When no optional data interfaces are installed via the available J7 Optical port or Plug‐In
Interface Card (PIIC) slots, by default the CDM‐750 provides a 10/100 Ethernet data interface via
two copper RJ‐45 Gigbabit Ethernet (also referred to as GigE or GbE) Interface ports. Figure 4‐16
shows a block diagram and cabling example of a CDM‐750 1:1 modem configuration using these
RJ‐45 ports (this example depicts use of both ports). Direct connection is made with user‐provided
Ethernet cables and Layer 2 switches, so no cables or kit is required.
CDM-750 Block Diagram: 10/100 Ethernet Interface
Figure 4-16. CDM-750 RJ-45 Gigabit Ethernet 1:1 Example
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.3.2.2 Optical Gigabit Ethernet Interface Option Example
Figure 4‐17 depicts a CDM‐750 1:1 modem configuration using the FAST‐activated J7 Optical SFP
port and optional Optical Gigabit Ethernet Interface module (CEFD P/N IC‐0000058).
Depending on the mode – Single Mode or Multi Mode – installation involves use of either one
CA‐0000560 Optical Single‐Mode Y‐Cable set, or one CA‐0000559 Multi‐Mode Y‐Cable set. Mode
configuration is easily distinguished by the color of the cables; for Single‐Mode configurations,
yellow cabling is used by the CA‐0000560 ‘Y’ Cable, whereas a Multi‐Mode configuration using
the CA‐0000559 ‘Y’ Cable features orange cabling.
Type LC sockets, part of optional IC-0000058 SFP Module,
typical for Single-Mode or Multi-Mode Optical Gigabit Ethernet:
CEFD Part No.
Qty
Description
CA-0000560
1
‘Y’ Cable Assy – RoHS-Compliant, Single-Mode Optical, LC Connectors
-OR-
CEFD Part No.
Qty
Description
CA-0000559
1
Y’ Cable Assy – RoHS-Compliant, Multi-Mode ‘Optical, LC Connectors
Figure 4-17. CDM-750 Optical Gigabit Ethernet 1:1 Example
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.3.2.3 Serial Data Interface Kit and Connection Examples
For all CDM‐750 serial data interface configurations, separate cabling kits are needed. For each
user interface, one interface kit per 1:1 modem pair is required (see examples for specified
quantities). For example, Sect. 4.3.2.3.1 identifies the interface kit used for the G.703 PIIC data
interface.
Figure 4‐18 shows a block diagram typical for the kits shown in this section. Note that this
cabling diagram is not applicable to the standard Gigabit Ethernet Data Interface configuration –
as shown in Sect. 4.3.2.1 and Figure 4‐17, user‐provided Ethernet cables and Layer 2 Switches
are used.
Figure 4-18. CDM-750 Block Diagram: User Æ Modem Æ Switch Æ Traffic
Note that, while data interface cards may be installed into both Interface Option slots, only one
interface is operable at a given time.
The following table outlines the data interface operating combinations allowable in Interface Option
slots 1 and 2 of the CDM‐750 chassis:
Allowable CDM-750 Interface Operating Combinations
PIIC Slot 1
PIIC Slot 2
G.703 E3/T3
None
None
G.703 E3/T3
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.3.2.3.1
KT/12542 Single G.703 E3/T3 75Ω (PIIC) Interface Kit
KT/12542 Single G.703 E3/T3 75Ω Interface Cabling Kit (G.703 E3/T3 75Ω PIIC)
CEFD Part No.
Qty
Description
CA/BNC75OHM
4
Cable – IF, BNC 75Ω, 1’
RF/SA32KC-IN/OUT
2
Combiner – 2-Way w/Bracket, 0.25-300 MHz, BNC 75Ω
Figure 4-19. CDM-750 G.703 E3/T3 PIIC Interface Kit – KT/12542
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.4
Cabling to the CDM-570
1. For information on the CDM‐570’s 1:1 auto‐enable functionality, see:
• Chapter 3. MODEM AND SWITCH CONFIGURATION
• CDM‐570/CDM‐570L/CDMR‐570L Satellite Modem Installation and Operation
Manual (CEFD P/N MN/CDM570L.IOM)
2. For information on the cables and cable assemblies specified in this section, see:
• Appendix A. CABLE DRAWINGS
4.4.1
CRS-180 Æ CDM-570 1:1 Redundancy Kit KT/11599
Reference to how the items provided in Redundancy Kit KT/11599 are used with all possible
CDM‐570 data interface configurations is as follows:
KT/11559 1:1 Redundancy Control/IF Interface Cabling Kit (CRS-180 Æ CDM-570)
CEFD Part No.
Qty/Kit
(REF)
Description
Used For
Ch. 4
Fig
PL/11560-1
1
CRS-180 Switch – Top Assembly
1:1 Redundancy
4-19
4-20
PL/0946-1
4
IF (Tx/Rx) Coax Cable, 50Ω Type ‘BNC’, 4’
Modem Æ Switch
IF Interface
4-20
CA/WR9378-4
2
Control Cable – Universal, DB-9M Æ DB-9M, 4’
Modem Æ Switch
Control
4-20
XF/BNC-MF-50-75
2
Transformer, 50-75Ω, 2-200 MHz, BNC, M/F
User IF Tx/Rx
Interface
4-20
CA/RB10461-1
1
Cable – 1:1 Y-Splitter, (2X) DB-25M Æ DB-25F
RS-422/232
Interface
4-22
CA/WR10522-1
1
Cable – 1:1 Y-Splitter, (2X) DB-15M Æ DB-15F
G.703 Balanced
4-23
KT/10553-1
1
G.703 Unbalanced Interface Kit containing:
(Qty 4) CA/BNC75OHM Cable – IF BNC, 1’
(Qty 2) CN/BNC-Tee-JPJ T-Adapter, 50Ω BNC
G.703 Unbalanced
4-24
Figure 4‐20 and Figure 4‐21 show how to connect a pair of CDM‐570 modems together with the
CRS‐180 70/140 MHz IF 1:1 Redundancy Switch module; the table for each figure lists the cable
assemblies provided in KT/11559 for this initial setup.
It is essential to ensure that the control and IF connections, both Rx and Tx, are made correctly.
See Sect. 4.4.2 in this chapter for details of the CDM‐570 Modem‐to‐Switch Control Interface
connection; Sect. 4.4.3 for details of the CDM‐570 Modem‐to‐Switch IF Interface connection; and
Sect. 4.4.4 for details of the CDM‐570 data interface configurations.
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.4.2
Modem-to-Switch Control Interface Connection
When connecting the Control cable between the CRS‐180 and the modems, ensure
that screw locks on the ‘D’ type connectors are securely fastened. This will prevent
the accidental unmating of the cable, particularly when a standby unit is being
removed or replaced.
CEFD Part No.
Qty
Description
CA/WR9378-4
2
Control Cable – Universal, DB-9M, 4’
Figure 4-20. CDM-570 Modem-to-Switch Control Connections
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.4.3
Modem-to-Switch IF Interface Connection
Item
CEFD Part No.
Qty
Description
1
PL/0946-1
4
IF Coax Cable, 50Ω
2
XF/BNC-MF-50-75
2
Transformer, 50-75Ω, 2-200 MHz, BNC, M/F
Figure 4-21. CDM-570 Modem-to-Switch 70/140 MHz IF Connections
Modem‐to‐Switch IF Connection Notes:
1. Excluding modems, all components depicted in Figure 4‐21 are provided in the KT/11559
CDM‐570 70/140 MHz IF 1:1 Redundancy Kit (see Sect. 4.4.1).
2. 50‐75Ω transformers (Item 2) are required on the Rx (J7) and Tx (J8) connectors, located on
the antenna side of the switch, when the user supplies a 75Ω Rx/Tx connection.
EXAMPLE: The Tx IF from ‘ Modem A’ connects to the Tx IF port ‘J5 | Tx A’ on the CRS‐180;
similarly, the Tx IF from ‘Modem B’ connects to the Tx IF port ‘J6| Tx B’ on the CRS‐180.
The same logic applies for the Rx IF connections. It is important to note that failure to observe this
requirement will result in system malfunction.
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.4.4
Modem-to-User Data Interface Connections and Examples
In addition to the control and IF switch‐to‐modem cabling shown previously, a number of data
interface configurations are available for the CDM‐570. The block diagram shown in Figure 4‐22
is typical for the examples shown in Sects. 4.4.4.1 through 4.4.4.3.
With the exception of the 10/100 Ethernet Interface configuration shown in Sect. 4.4.4.4, where
user‐provided Ethernet cables and hub are used, one cable/component set per 1:1 modem pair is
required for each user interface (see examples for specified quantities).
Figure 4-22. CDM-570 Block Diagram: User Æ Modem Æ Switch Æ Traffic
Unless otherwise specified, the interface cables and components identified in each of
the examples that follow are provided in the KT/11559 CDM‐570 1:1 Redundancy Kit
(see Sect. 4.4.1).
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.4.4.1 RS-422/232 Interface Example
CEFD Part No.
Qty
Description
CA/RB10461-1
1
Cable – 1:1 ‘Y’ Splitter, (2X) DB-25M Æ DB-25F
Figure 4-23. CDM-570 RS-422/232 1:1 Example
4.4.4.2 G.703 Balanced Interface Example
CEFD Part No.
Qty
Description
CA/WR10522-1
1
Cable – 1:1 ‘Y’ Splitter, (2X) DB-15M Æ DB-15F
Figure 4-24. CDM-570 G.703 Balanced 1:1 Example
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.4.4.3 G.703 Unbalanced Interface Example
G.703 Unbalanced 1:1 Interface Kit KT/10553-1
CEFD Part No.
Qty
Description
CA/BNC75OHM
4
Cable – IF BNC, 1’
CN/BNC-TEE-JPJ
2
T-Adapter, 50Ω BNC
Figure 4-25. CDM-570 G.703 Unbalanced 1:1 Example
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.4.4.4 10/100 Ethernet Interface Example
Figure 4‐26 shows a block diagram and cabling example of a CDM‐570 1:1 modem configuration
using the 10/100 Ethernet Interface. User‐provided Ethernet cables are connected directly to the
ports, so no cables or kit is required.
For the CDM‐570 in Managed Switch (Ethernet Bridge) Mode, the user MUST use an
external Ethernet hub to insure that traffic will continue after a switchover. If an
Ethernet switch is used, there could be a several minute outage while the Ethernet
Switch “re‐learns” the correct output Ethernet port. Using a “dumb” Ethernet hub
allows LAN to WAN traffic to continue even after a switchover occurs since both
modems will be receiving the LAN traffic.
CDM-570 Block Diagram: 10/100 Ethernet Interface
Figure 4-26. CDM-570 10/100 Ethernet 1:1 Example
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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Notes:
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.5
Cabling to the CDM-700
1. For information on configuring the CRS‐180 70/140 MHz IF 1:1 Redundancy Switch
with the CDM‐700 Satellite Modems for 1:1 operation, see:
• Chapter 3. MODEM AND SWITCH CONFIGURATION
• CDM‐700 Satellite Modem Installation and Operation Manual
(CEFD P/N MN/CDM700.IOM)
2. For information on the cables and cable assemblies specified in this section, see:
• Appendix A. CABLE DRAWINGS
4.5.1
Modem-to-Switch Control and IF Interface Connection
Figure 4‐27 shows the control and IF connections for the CDM‐700 to the CRS‐180. All control
and IF components are provided in the KT/12554 CRS‐180 70/140 MHz IF 1:1 Redundancy Kit
(terrestrial data interface components/kits must be ordered separately – see Sect. 4.5.2 for
more information). Note the following:
1. Use of the XF/BNC‐MF‐50‐75 transformers (Item 2) is required on the Rx (J7) and Tx (J8)
connectors, located on the antenna side of the switch, when the user supplies a 75Ω Rx/Tx
connection.
2. Use of the XF/BNC‐MF‐50‐75 transformers (Item 2) on the Rx A and Rx B ports, located on
the modem side of the switch, is dependent on the CDM‐700’s factory configuration for 50Ω
or 75Ω Rx operability. If the modems in use are configured as 50Ω Rx units, the
transformers will not be used on the Rx side and the 50Ω cable (Item 4) will be used in place
of the 75Ω cable (Item 3).
3. To provide User access to modem “Fault Summary Relay,” Control ‘Y’ Cable CA/WR13011‐4,
sold separately, is available for use in place of the CA/WR12135‐1 cable.
4. Control Cable CA/WR12135‐1 will mute the Offline modem’s Tx IF. If this is not desired, then
an alternate cable, Control Cable CA‐0000187, sold separately, is available for use in place of
the CA/WR12135‐1 cable.
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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KT/12554 70/140 MHz IF 1:1 Redundancy Kit
Item
CEFD Part No.
Qty
Description
1
PL/11560-1
1
Top Assy, CRS-180 70/140 MHz IF 1:1 Redundancy Switch
2
XF/BNC-MF-50-75 (Notes 1,2)
4
Transformer, 50-75Ω, 2-200 MHz, BNC, M/F
3
PL/0813-4 (Note 2)
2
Cable, Special, IF BNC, 75Ω
4
PL/0946-1 (Note 2)
4
Cable, Special, IF BNC, 50Ω
5
CA/WR12135-1 (Notes 3, 4)
2
Cable Assy, Control Adapter RoHS-Compliant
Figure 4-27. CDM-700 Modem-to-Switch Control & IF Connections – KT/12554
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.5.2
Modem-to-User Data Interface Kits and Connection Examples
In addition to the control and IF switch‐to‐modem cabling shown in the previous section, a
number of data interface configurations are available for use with the CDM‐700. The kits featured
in this section can be supplied with the CRS‐180 for use with the CDM‐700.
Figure 4-28. CDM-700 Block Diagram: User Æ Modem Æ Switch Æ Traffic
Figure 4‐28 shows a block diagram typical for the kits shown in Sects. 4.5.2.1 through 4.5.2.3.
Separate interface cabling kits are needed for these CDM‐700 data interfaces. For example,
Sect. 4.5.2.1 identifies the interface kits used for the CDI‐10 Dual G.703 E3/T3/STS‐1 and the
CDI‐60 HSSI Data Interfaces. With the exception of the CDI‐70 Gigabit Ethernet Data Interface
configuration shown in Sect. 4.5.2.4, where user‐provided Ethernet cables and Layer 2 Switch
are used, one interface kit per 1:1 modem pair is required for each user interface (see examples
for specified quantities).
The data interface combinations allowable in Interface Slots 1 and 2 of the CDM‐700 chassis are as
follows:
Allowable CDM-700 Combinations
Interface Slot 1
Interface Slot 2
Dual G.703 (CDI-10)
None
Dual G.703 (CDI-10)
HSSI (CDI-60)
GigE (CDI-70)
OC3 Optical (CDI-50-1) Single Mode
None
OC3 Copper (CDI-50-1)
None
HSSI (CDI-60)
None
HSSI (CDI-60
GigE (CDI-70)
GigE (CDI-70)
None
GigE (CDI-70)
None
Dual G.703 (CDI-10)
HSSI (CDI-60)
GigE (CDI-70)
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.5.2.1 Dual G.703 E3/T3/STS-1 75Ω Data Interface (CDI-10) Kit KT/12542
and HSSI Data Interface (CDI-60) Kit KT/12578
Figure 4‐29 shows an example of a CDM‐700 1:1 modem configuration with the CDI‐10 Dual
G.703 Data Interface installed in Slot 1, and the CDI‐60 HSSI Data Interface installed in Slot 2.
The figure depicts installation of one KT/12542 Dual G.703 Interface Kit (each kit can supply one
or two CDI‐10 interfaces), and one KT/12578 HSSI Interface Kit.
KT/12542 G.703 (CDI-10) 75Ω Interface Kit
CEFD Part No.
Qty
Description
CA/BNC75OHM
8
Cable – IF BNC, 75Ω, 1’
RF/SA32KC-IN/OUT
4
Combiner – 2-way w/Bracket, 0.25-300 MHz, 75Ω BNC
KT/12578 HSSI (CDI-60) Interface Kit
CEFD Part No.
Qty
Description
PP/SC3523
1
Cable - RoHS-Compliant, HSSI ‘Y’ Splitter, (2X) HD-50M Æ HD-50F, 3”
Figure 4-29. CDM-700 G.703 E3/T3/STS-1 and HSSI 1:1 Example
To/From User
To User
From User
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.5.2.2 155MB Copper Data Interface (CDI-50) Kit KT/12579
Figure 4‐30 shows an example of a CDM‐700 1:1 modem configuration with a CDI‐50 Data
Interface installed in Slot 1 for use with 155MB Copper data, and Slot 2 empty. The figure
depicts installation of one KT/12579 155MB Copper Interface Kit – each kit can supply one or two
CDI‐50 interfaces.
KT/12579 155MB Copper (CDI-50) Interface Kit
CEFD Part No.
Qty
Description
CA/BNC75OHM
4
Cable – IF BNC, 75Ω, 1’
RF/SA32KC-IN/OUT
2
Combiner – 2-way w/Bracket, 0.25-300 MHz, 75Ω BNC
Figure 4-30. CDM-700 155MB Copper 1:1 Example
To User
From User
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.5.2.3 OC-3 Data Interface (CDI-50) Kits KT/12580 (Single-Mode) or
KT/12581 (Multi-Mode)
Figure 4‐31 depicts a CDM‐700 1:1 modem configuration with installation of one CDI‐50 Data
Interface installed in Slot 1 for use with OC‐3 data, and Slot 2 empty. The figure depicts installation
of one KT/12580 OC‐3 Single‐Mode Interface Kit. Multi‐Mode configurations use the KT/12581
OC‐3 Multi‐Mode Interface kit.
Mode configuration is easily distinguished by the color of the cables included in the kit; for Single‐
Mode configurations, yellow cabling is used as shown in Figure 4‐31, whereas a Multi‐Mode
configuration (not shown) features orange cabling.
KT/12580 OC-3 Single-Mode (CDI-50) Interface Kit
CEFD Part No.
Qty
Description
PP/CPS2A12501
2
Cable Assy – RoHS-Compliant, Optical Coupler, SC/UPC Connectors
OR
KT/12581 OC-3 Multi-Mode (CDI-50) Interface Kit
CEFD Part No.
Qty
Description
PP/CPM6A1250
2
Cable Assy – RoHS-Compliant, Optical Coupler, SC/UPC Connectors
Figure 4-31. CDM-700 OC-3 1:1 Example (Single-Mode shown)
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.5.2.4 Gigabit Ethernet Data Interface (CDI-70) Example
See CEFD White Paper “Bridged Ethernet Interface Redundancy” available for
download from Comtech EF Data’s Web site (www.comtechefdata.com).
Figure 4‐32 shows an example of a CDM‐700 1:1 modem configuration with a CDI‐70 Gigabit
Ethernet Data Interface installed in Slot 1, and Slot 2 empty. User‐provided Ethernet cables are
connected directly to the interface, so no kit is required.
CDM-700 Block Diagram: Gigabit Ethernet (GigE) Interface
Figure 4-32. CDM-700 Gigabit Ethernet (GigE) 1:1 Example
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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Notes:
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.6
Cabling to the CDM-710
1. For information on configuring the CRS‐180 70/140 MHz 1:1 Redundancy Switch
with the CDM‐710 Broadcast Satellite Modems for 1:1 operation, see:
• Chapter 3. MODEM AND SWITCH CONFIGURATION
• CDM‐710 Broadcast Satellite Modem Installation and Operation Manual
(CEFD P/N MN/CDM710.IOM)
2. For information on the cables and cable assemblies specified in this section, see:
• Appendix A. CABLE DRAWINGS
4.6.1
Modem-to-Switch Control and IF Interface Connection
Figure 4‐33 shows the control and IF connections for the CDM‐710 to the CRS‐180. All IF and
control components are provided in the KT/12554 CRS‐180 70/140 MHz IF 1:1 Redundancy Kit
(terrestrial data interface components/kits must be ordered separately). Note the following:
1. Use of the XF/BNC‐MF‐50‐75 transformers (Item 2) is required on the Rx (J7) and Tx (J8)
connectors, located on the antenna side of the switch, when the user supplies a 75Ω Rx/Tx
connection.
2. Use of the XF/BNC‐MF‐50‐75 transformers (Item 2) on the Rx A and Rx B ports, located on
the modem side of the switch, is dependent on the CDM‐710’s factory configuration for 50Ω
or 75Ω Rx operability. If the modems in use are configured as 50Ω Rx units, the
transformers will not be used on the Rx side and the 50Ω cable (Item 4) will be used in place
of the 75Ω cable (Item 3).
3. To provide User access to modem “Fault Summary Relay,” Control ‘Y’ Cable CA/WR13011‐4,
sold separately, is available for use in place of the CA/WR12135‐1 cable.
4. Control Cable CA/WR12135‐1 will mute the Offline modem’s Tx IF. If this is not desired, then
an alternate cable, Control Cable CA‐0000187, sold separately, is available for use in place of
the CA/WR12135‐1 cable.
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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Cables and Connections
MN/CRS180.IOM
4–38
KT/12554 70/140 MHz IF 1:1 Redundancy Kit
Item
CEFD Part No.
Qty
Description
1
PL/11560-1
1
Top Assy, CRS-180 70/140 MHz IF 1:1 Redundancy Switch
2
XF/BNC-MF-50-75 (Notes 1,2)
4
Transformer, 50-75Ω, 2-200 MHz, BNC, M/F
3
PL/0813-4 (Note 2)
2
Cable, Special, IF BNC, 75Ω
4
PL/0946-1 (Note 2)
4
Cable, Special, IF BNC, 50Ω
5
CA/WR12135-1 (Notes 3, 4)
2
Cable Assy, Control Adapter RoHS-Compliant
Figure 4-33. CDM-710 Modem-to-Switch Control & IF Connections – KT/12554
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.6.2
Modem-to-User Data Interface Kit and Connection Examples
In addition to the control and IF switch‐to‐modem cabling shown in the previous section, a
number of data interface configuration kits are available for use with the CDM‐710.
Figure 4-34. CDM-710 Block Diagram: User Æ Modem Æ Switch Æ Traffic
Figure 4‐34 shows a block diagram typical for the kits shown in Sects. 4.6.2.1 and 4.6.2.2.
Separate cabling kits are needed for these CDM‐710 data interfaces. For example, Sect. 4.6.2.1
identifies the interface kit used for the CDI‐40 ASI Data Interface. With the exception of the CDI‐70
Gigabit Ethernet Data Interface configuration shown in Sect. 4.6.2.3, where user‐provided
Ethernet cables and Layer 2 Switch are used, one interface kit per 1:1 modem pair is required
for each user interface (see examples for specified quantities).
The data interface combinations allowable in Interface Slots 1 and 2 of the CDM‐710 chassis are as
follows:
Allowable CDM-710 Combinations
Interface Slot 1
Interface Slot 2
ASI (CDI-40)
None
HSSI (CDI-60)
None
None
GbE (CDI-70)
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.6.2.1 ASI 75Ω Data Interface (CDI-40) Kit KT/12579
Figure 4‐35 shows an example of a CDM‐710 1:1 modem configuration with the CDI‐40 ASI Data
Interface installed in Slot 1, and Slot 2 empty. The figure depicts installation of one KT/12579 ASI
Interface Kit.
Be sure to connect to the lower BNC connectors labeled “1:1” on the CDI-40 ASI Data Interface. The
Rx port on each interface has been tuned to be 3 dB higher amplitude to compensate for the
presence of the RF/SA32KC-IN/OUT 2-way combiner.
KT/12579 ASI (CDI-40) 75Ω Interface Kit
CEFD Part No.
Qty
Description
CA/BNC75OHM
4
Cable – IF BNC, 75Ω, 1’
RF/SA32KC-IN/OUT
2
Combiner – 2-way w/Bracket, 0.25-300 MHz, 75Ω BNC
Figure 4-35. CDM-710 ASI 1:1 Example
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.6.2.2 HSSI Data Interface (CDI-60) Interface Kit KT/12578
Figure 4‐36 shows an example of a CDM‐710 1:1 modem configuration with the CDI‐60 HSSI
Data Interface installed in Slot 1, and Slot 2 empty. The figure depicts installation of one
KT/12578 HSSI Interface Kit.
KT/12578 HSSI (CDI-60) Interface Kit
CEFD Part No.
Qty
Description
PP/SC3523
1
Cable - RoHS-Compliant, HSSI ‘Y’ Splitter, (2X) HD-50M Æ HD-50F, 3”
Figure 4-36. CDM-710 HSSI 1:1 Example
To/From User
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.6.2.3 Gigabit Ethernet Data Interface (CDI-70) Example
See CEFD White Paper “Bridged Ethernet Interface Redundancy” available for
download from Comtech EF Data’s Web site (www.comtechefdata.com).
Figure 4‐37 shows a block diagram and cabling example of a CDM‐710 1:1 modem configuration
with a CDI‐70 Gigabit Ethernet Data Interface in Slot 2, and Slot 1 empty. User‐provided Ethernet
cables are connected directly to the interface, so no kit is required.
CDM-710 Gigabit Ethernet (GigE) Interface – Block Diagram
Figure 4-37. CDM-710 Gigabit Ethernet (GigE) 1:1 Example
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.7
Cabling to the CDM-710G
1. For information on configuring the CRS‐180 70/140 MHz 1:1 Redundancy Switch
with the CDM‐710 Broadcast Satellite Modems for 1:1 operation, see:
• Chapter 3. MODEM AND SWITCH CONFIGURATION
• CDM‐710G High‐Speed Satellite Modem Installation and Operation Manual
(CEFD P/N MN‐CDM710G.IOM)
2. For information on the cables and cable assemblies specified in this section, see:
Appendix A. CABLE DRAWINGS
4.7.1
Modem-to-Switch Control and IF Interface Connection
Figure 4‐38 shows the control and IF connections for the CDM‐710G to the CRS‐180. As with the
CDM‐710, all control and IF components are provided for the CDM‐710G in the KT/12554
CRS‐180 70/140 MHz IF 1:1 Redundancy Kit (terrestrial data interface components/kits must be
ordered separately). Note the following:
1. Use of the XF/BNC‐MF‐50‐75 transformers (Item 2) is required on the Rx (J7) and Tx (J8)
connectors, located on the antenna side of the switch, when the user supplies a 75Ω Rx/Tx
connection.
2. Use of the XF/BNC‐MF‐50‐75 transformers (Item 2) on the Rx A and Rx B ports, located on
the modem side of the switch, is dependent on the CDM‐710G’s factory configuration for
50Ω or 75Ω Rx operability. If the modems in use are configured as 50Ω Rx units, the
transformers will not be used on the Rx side and the 50Ω cable (Item 4) will be used in place
of the 75Ω cable (Item 3).
3. To provide User access to modem “Fault Summary Relay,” Control ‘Y’ Cable CA/WR13011‐4,
sold separately, is available for use in place of the CA/WR12135‐1 cable.
4. Control Cable CA/WR12135‐1 will mute the Offline modem’s Tx IF. If this is not desired, then
an alternate cable, Control Cable CA‐0000187, sold separately, is available for use in place of
the CA/WR12135‐1 cable.
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
Revision 8
Cables and Connections
MN/CRS180.IOM
4–44
KT/12554 70/140 MHz IF 1:1 Redundancy Kit
Item
CEFD Part No.
Qty
Description
1
PL/11560-1
1
Top Assy, CRS-180 70/140 MHz IF 1:1 Redundancy Switch
2
XF/BNC-MF-50-75 (Notes 1,2)
4
Transformer, 50-75Ω, 2-200 MHz, BNC, M/F
3
PL/0813-4 (Note 2)
2
Cable, Special, IF BNC, 75Ω
4
PL/0946-1 (Note 2)
4
Cable, Special, IF BNC, 50Ω
5
CA/WR12135-1 (Notes 3,4)
2
Cable Assy, Control Adapter RoHS-Compliant
Figure 4-38. CDM-710G Modem-to-Switch Control & IF Connections – KT/12554
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.7.2
Modem-to-User Data Interface Kit and Connection Examples
In addition to the basic switch‐to‐modem cabling shown in the previous section, a number of
data interface configuration kits are available for use with the CDM‐710G.
Figure 4-39. CDM-710G Block Diagram: User Æ Modem Æ Switch Æ Traffic
Figure 4‐39 shows a block diagram typical for the kits shown in Sects. 4.7.2.1 and Sect. 4.7.2.2.
Separate cabling kits are needed for these CDM‐710G data interfaces. For example, Sect. 4.7.2.1
identifies the interface kit used for the CDI‐10‐1 Single G.703 Data Interface. With the exception of
the CDI‐70 Gigabit Ethernet Data Interface configuration shown in Sect. 4.7.2.3, where user‐provided
Ethernet cables and Layer 2 Switch are used, one interface kit per 1:1 modem pair is required for
each interface (see examples for specified quantities).
The data interface combinations allowable in Interface Slots 1 and 2 of the CDM‐710G chassis are
as follows:
Allowable CDM-710G Combinations
Interface Slot 1
Interface Slot 2
Single G.703 (CDI-10-1)
None
HSSI (CDI-60)
None
None
GigE (CDI-70)
CRS-180 70/140 MHz IF 1:1 Redundancy Switch
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4.7.2.1
Single G.703 E3/T3/STS-1 75Ω Data Interface (CDI-10-1) Kit KT/12583
Figure 4‐40 shows an example of a CDM‐710G 1:1 modem configuration with the CDI‐10‐1
Single G.703 Data Interface installed in Slot 1, and Slot 2 empty. The figure depicts installation of
one KT/12583 Single G.703 Interface Kit.
KT/12583 Single G.703 (CDI-10-1) 75Ω Interface Kit
CEFD Part No.
Qty
Description
CA/BNC75OHM
4
Cable – IF BNC, 75Ω, 1’
RF/SA32KC-IN/OUT
2
Combiner – 2-way w/Bracket, 0.25-300 MHz, 75Ω BNC
Figure 4-40. CDM-710G Single G.703 E3/T3/STS-1 1:1 Example
MODEM A
MODEM B
To User
From User