RTS IFB-828 User Instructions

were originated by and are the property of Telex Communi- cations, Inc. Telex reserves all patent, proprietary design, manufacturing, reproduction, use and sales rights thereto, and to any article disclosed therein, except to the extent rights are expressly granted to others. COPYRIGHT NOTICE Copyright 1997 by Telex Communications, Inc. All rights reserved. Reproduction in whole or in part without prior written permission from Telex is prohibited. UNPACKING AND INSPECTION Immediately upon receipt of the equipment, inspect the shipping container and the contents carefully for any discrepancies or damage. Should there be any, notify the freight company and the dealer at once. WARRANTY INFORMATION RTS products are warranted by Telex Communications, Inc. to be free from defects in materials and workmanship for a period of three years from the date of sale. The sole obligation of Telex during the warranty period is to provide, without charge, parts and labor necessary to remedy covered defects appearing in products returned prepaid to Telex. This warranty does not cover any defect, malfunction or failure caused beyond the control of Telex, including unreasonable or negligent operation, abuse, accident, failure to follow instructions in the Service Manual or the User Manual, defective or improper associated equipment, attempts at modification and repair not authorized by Telex, and shipping damage. Products with their serial numbers removed or effaced are not covered by this warranty. To obtain warranty service, follow the procedures entitled "Procedure For Returns" and "Shipping to Manufacturer for Repair or Adjustment". This warranty is the sole and exclusive express warranty given with respect to RTS products. It is the responsibility of the user to determine before purchase that this product is suitable for the user's intended purpose. ANY AND ALL IMPLIED WARRANTIES, INCLUDING THE IMPLIED WARRANTY OF MERCHANTABILITY ARE LIMITED TO THE DURATION OF THIS EXPRESS LIMITED WARRANTY. NEITHER TELEX NOR THE DEALER WHO SELLS RTS PRODUCTS IS LIABLE FOR INCIDENTAL OR CONSE- QUENTIAL DAMAGES OF ANY KIND. CUSTOMER SUPPORT Technical questions should be directed to: Customer Service Department RTS/Telex, 2550 Hollywood Way, Suite 207 Burbank, CA 91505 U.S.A. Telephone: (818) 566-6700 Fax: (818) 843-7953 RETURN SHIPPING INSTRUCTIONS PROCEDURE FOR RETURNS If a repair is necessary, contact the dealer where this unit was purchased. If repair through the dealer is not possible, obtain a RETURN AUTHORIZATION from: Customer Service Department Telex Communications, Inc. Telephone: (800) 828-6107 Fax: (800) 323-0498 DO NOT RETURN ANY EQUIPMENT DIRECTLY TO THE FACTORY WITHOUT FIRST OBTAINING A RETURN AUTHORIZATION. Be prepared to provide the company name, address, phone number, a person to contact regarding the repair, the type and quantity of equipment, a description of the problem and the serial number(s). SHIPPING TO MANUFACTURER FOR REPAIR OR ADJUSTMENT All shipments of RTS products should be made via United Parcel Service or the best available shipper, prepaid. The equipment should be shipped in the original packing carton; if that is not available, use any suitable container that is rigid and of adequate size. If a substitute container is used, the equipment should be wrapped in paper and surrounded with at least four inches of excelsior or similar shock-absorbing material. All shipments must be sent to the following address and must include the Return Authori- zation. Factory Service Department Telex Communications, Incorporated 8601 E. Cornhusker Hwy Lincoln, NE 68505 U.S.A. Upon completion of any repair the equipment will be returned via United Parcel Service or specified shipper collect.

COPYRIGHT NOTICE ......................................................................................................... 2 CUSTOMER SUPPORT ...................................................................................................... 2 1 IFB-828 Description......................................................................................................... 4 2 Installation in an RTS Digital Matrix .............................................................................. 4 3 Using the IFB-828 as a Simple ....................................................................................... 4 4 Program Interface with 4020 and4030 Belt Packs ........................................................ 6 5 IFB-828 Mechanical Assembly Parts ............................................................................. 8 6 IFB-828 PC Board Electrical Parts ................................................................................. 8

The IFB-828 interfaces up to eight RTS Systems’ Model IFB-325, 4020, or 4030 IFB Belt Packs to any RTS Digital Matrix Intercom System, and it provides power to the beltpacks. The IFB-828 may also be used as a simple program interface to feed two separate program sources to each of eight 4020 or 4030 belt packs (16 program sources to eight belt packs total). 2 Installation in an RTS Digital Matrix 1 Mount the IFB-828 in an equipment rack or bay. It should be positioned near eye height when sitting or standing to permit adjustment of the IFB program levels and to check the power indicator lights. There are no special ventilation requirements. ☞ IFB-828 Location: The XLR connector outputs from the IFB-828 provide unbalanced audio and DC operating power to IFB belt packs. Therefore, very long cable runs (over several hundred feet) from the IFB-828 to the belt packs may result in diminished performance due to DC resistance in the cabling and noise induced by surrounding equipment. Select a location for the IFB-828 that is as close as possible to the belt packs, or use appropriate precautions (shielded cable, heavier gauge stranded wire, routing away from unshielded equipment, etc.) For broadcast applications you will typically locate the IFB-828 in the audio booth near the talent location, and no special precautions are required. 2 Set the voltage selector switch on the back panel: Select 110 for 110/120 V, 50/60 Hz operation Select 220 for 220/240 V, 50/60 Hz operation 3 Connect a 25-pair telco cable to J9 on the back of the IFB-828. Run this cable back to the audio distribution point for the intercom system (punch blocks etc.). 4 Setup the IFB’s at the digital matrix intercom system using the intercom system configuration software: ☞ CSedit Users: see “Creating an IFB” in Section 2 of your CSedit User Manual. For each IFB, note which intercom port you have setup as the IFB output port. You define this port in the IFB Out column of the Interrupt Foldback Bus Assignments table. Also note which intercom port you have setup as the Program Input port. You define this port in the Def Inp column of the table. ☞ ADAMedit Users: select the IFB button on the ADAMedit toolbar, then double-click on an IFB to open the Edit IFB dialogue window for that IFB. For each IFB that you setup, note which intercom port you have set as the IFB output port in the Output text box or list box. Also note which intercom port you Figure 1. IFB-828 Reference View

box or list box. 5 Once you have configured the required IFB’s, also be sure to assign them to keypanel keys: ☞CSedit Users: see “Keypanel Setup” in Section 2 of your CSedit User Manual. ☞ADAMedit Users: select the KP button on the toolbar, then press F1 to get help on keypanel setup. 6 For each IFB that you setup: a. Connect from the output port of the matrix (that you defined in step 4) to an available IFB input of the IFB-828. Make the connections at the audio distribution point where you have connected the cable from J9 of the IFB-828. See Table for pin numbers. b. Connect the IFB program audio source both to the intercom port that you defined as the program input port of the matrix (in step 4) AND also connect the IFB program audio source to the direct program input of the selected channel of the IFB-828. 7 Connect from the appropriate 3-pin XLR output connector of the IFB-828 to the LINE ( or LINES ) connector of the IFB belt pack. Typical cable wiring is shown in Figure . ☞In the factory-default configuration, the IFB-325 Belt Packs receives IFB audio on pin 3 of its XLR connector. In this configuration, the belt pack’s internal shorting plug J3 is set to pins 2 and 3 shorted. This is NOT the correct configuration for use with the IFB-828. To change the setting, open the belt pack and reset the J3 shorting plug so that pins 4 and 5 are shorted. Refer to your IFB-325 Manual for further information. 8. Connect an earset to the IFB belt pack. The Model IFB-325 accepts only monaural earsets. The Models 4020 and 4030 accept either monaural or stereo earsets. However, for the standard application of the IFB-828, only a monaural earset is required. Monaural Earset Pin-out: Tip: IFB audio & direct program mix Sleeve: Common Stereo Earset Pin-out Tip: IFB audio & direct program mix (Interrupt) Ring: Direct program audio (Non-interrupt) Sleeve: Common sre b m u N ni P n oitpirc s e D tu p n I + tu p n I - 1 6 2 tu p ni m arg o r p tc erid 1 le n n a h c 2 7 2 )xirta M m o rf( tu p ni B F I 1 le n n a h C 3 8 2 n oitc e n n o c o N 4 9 2 tu p ni m arg o r p tc erid 2 le n n a h C 5 0 3 )xirta M m o rf( tu p ni B F I 2 le n n h a C 6 1 3 n oitc e n n o c o N 7 2 3 tu p ni m arg o r p tc erid 3 le n n a h C 8 3 3 )xirta M m o rf( tu p ni B F I 3 le n n a h C 9 4 3 n oitc e n n o c o N 0 1 5 3 tu p ni m arg o r p tc erid 4 le n n a h C 1 1 6 3 )xirta M m o rf( tu p ni B F I 4 le n n a h C 2 1 7 3 n oitc e n n o c o N 3 1 8 3 tu p ni m arg o r p tc erid 5 le n n a h C 4 1 9 3 )xirta M m o rf( tu p ni B F I 5 le n n a h C 5 1 0 4 n oitc e n n o c o N 6 1 1 4 tu p ni m arg o r p tc erid 6 le n n a h C 7 1 2 4 )xirta M m o rf( tu p ni B F I 6 le n n a h C 8 1 3 4 n oitc e n n o c o N 9 1 4 4 tu p ni m arg o r p tc erid 7 le n n a h C 0 2 5 4 )xirta M m o rf( tu p ni B F I 7 le n n a h C 1 2 6 4 n oitc e n n o c o N 2 2 7 4 tu p ni m arg o r p tc erid 8 le n n a h C 3 2 8 4 )xirta M m o rf( tu p ni B F I 8 le n n a h C 4 2 9 4 n oitc e n n o c o N 5 2 0 5 n oitc e n n o c o N 9 Set all belt pack volume controls and all level controls on the IFB-828 to minimum. 10 Plug in the IFB-828 power cord. The main power LED on the front panel should light, and each channel LED should light indicating that power is being supplied to the belt pack output on that channel. Ensure that the matrix is operational and that all program sources are operational. 11 During normal operation (no IFB interrupts activated) have each talent position adjust their belt pack volume control for a comfortable program listening level. (Use the INTERRUPT control on a model 4020 or 4030 belt pack.) 12 For each IFB: activate the keypanel key that is assigned to that IFB. The program audio should be interrupted at the associated IFB belt pack, and the mic Table 1. Input Connector Pin-out (J9)

While the IFB key is activated, adjust the appropriate level control on the front panel of the IFB-828 to mix the desired amount of direct program audio back into the keypanel’s mic audio signal. When the IFB key is released, the mic audio should cut off, and the normal program audio level should be restored. 13 This completes the installation procedure to use the IFB-828 with an RTS digital matrix. 3 Using the IFB-828 as a Simple Program Interface with 4020 and 4030 Belt Packs Use Table and the cable wiring in Figure to connect one or two program sources to each IFB-828 channel. In this application, each direct program input at the IFB-828 feeds to the Non-interrupt channel of the belt pack, and the level is adjusted by the NON-INTERRUPT control on the belt pack; each IFB input feeds to the Interrupt channel and is adjusted by the INTERRUPT control. The control on the IFB-828 front panel can be used to mix the NON-INTER- RUPT audio into the INTERRUPT audio. Figure 2. IFB Belt Pack Interconnect Cable Wiring Diagram

Dimensions 19” wide x 1.75” high x 7.5” deep (483 mm x 44.5 mm x 191 mm) Input Power Requirements 110/120 or 220/240 VAC, 50/60 Hz, selectable via a back panel switch Audio Inputs Type: Balanced (transformer coupled) Level: +4 to +8 dBu Impedance: Approximately 600 ohms Audio Outputs Type: Unbalanced Level: -10 to -6 dBu Output Power (each IFB belt pack channel) +24VDC, 200 mA Connectors Input (J9) Type: 50-pin telco Pin-out: see Table . Outputs (J1 to J8) Type: 3-pin male XLR Pin 1: Audio and DC Common Pin 2: +IFB audio (interrupt audio) and +24VDC Pin 3: +Direct program audio (non-interrupt audio)

Qty Description Part Number 1 TRANSFORMER, TOROID 559002001 1 CONN .156 SP 3 POS 8800101838 1 CONN D HDWE KIT=KY 8800102463 1 A/C CORD/CONN 18GA 8800102668 1 A/C ENTRY MODULE 8800117313 9 CONN .100SP 2POS 24 8800127838 1 FUSE 1 AMP 5MMX 20M 8800129658 1 LED 5V GN PNL MNT W 8800131495 2 IDE PNL 7” 8800144463 8 KNOB POINTER 15MM 8800156636 8 KNOB 15MM ¼ SHFT 8800157458 8 LED GRN PNL MNT 8800191073 1 COVER 7” TOP/BTM 8800218428 8 KNOB CAP 15MM BLK 8800243720 1 PCB ASSY IFB POWER 90307094000 1 FRONT PANEL IFB828 90707094000 1 REAR PANEL IFB828 90807094000 1 BOTTOM PANEL 91007094000 6 IFB-828 PC Board Electrical Parts Ref Des Description Part Number C1 CAPACITOR, EL, 1000 UF, 50V 51821-536 C2 CAPACITOR, CM, 0.1 UF, 50V 52676-613 C11 CAPACITOR, EL, 10 UF, 50V 51821-639 C12 CAPACITOR, CM, 0.1 UF, 50V 52676-613 C13 CAPACITOR, EL, 10 UF, 50V 51821-639 C21 CAPACITOR, EL, 10 UF, 50V 51821-639 C22 CAPACITOR, CM, 0.1 UF, 50V 52676-613 C23 CAPACITOR, EL, 10 UF, 50V 51821-639 C31 CAPACITOR, EL, 10 UF, 50V 51821-639 C32 CAPACITOR, CM, 0.1 UF, 50V 52676-613 C33 CAPACITOR, EL, 10 UF, 50V 51821-639 C41 CAPACITOR, EL, 10 UF, 50V 51821-639 C42 CAPACITOR, CM, 0.1 UF, 50V 52676-613 C43 CAPACITOR, EL, 10 UF, 50V 51821-639 C51 CAPACITOR, EL, 10 UF, 50V 51821-639 C52 CAPACITOR, CM, 0.1 UF, 50V 52676-613 C53 CAPACITOR, EL, 10 UF, 50V 51821-639 C61 CAPACITOR, EL, 10 UF, 50V 51821-639 C62 CAPACITOR, CM, 0.1 UF, 50V 52676-613 C63 CAPACITOR, EL, 10 UF, 50V 51821-639 C71 CAPACITOR, EL, 10 UF, 50V 51821-639 C72 CAPACITOR, CM, 0.1 UF, 50V 52676-613 C73 CAPACITOR, EL, 10 UF, 50V 51821-639 C81 CAPACITOR, EL, 10 UF, 50V 51821-639 C82 CAPACITOR, CM, 0.1 UF, 50V 52676-613 C83 CAPACITOR, EL, 10 UF, 50V 51821-639 D1 DIODE, BRIDGE, 2A, 1000V, BR810DF 558011-000 D11 DIODE, 1N4004, 400V 50745-005 D12 DIODE, 1N4004, 400V 50745-005 D13 DIODE, 1N4004, 400V 50745-005 D21 DIODE, 1N4004, 400V 50745-005 D22 DIODE, 1N4004, 400V 50745-005 D23 DIODE, 1N4004, 400V 50745-005 D31 DIODE, 1N4004, 400V 50745-005 D32 DIODE, 1N4004, 400V 50745-005 D33 DIODE, 1N4004, 400V 50745-005 D41 DIODE, 1N4004, 400V 50745-005 D42 DIODE, 1N4004, 400V 50745-005 D43 DIODE, 1N4004, 400V 50745-005 D51 DIODE, 1N4004, 400V 50745-005 D52 DIODE, 1N4004, 400V 50745-005 D53 DIODE, 1N4004, 400V 50745-005 D61 DIODE, 1N4004, 400V 50745-005 D62 DIODE, 1N4004, 400V 50745-005 D63 DIODE, 1N4004, 400V 50745-005 D71 DIODE, 1N4004, 400V 50745-005 D72 DIODE, 1N4004, 400V 50745-005 D73 DIODE, 1N4004, 400V 50745-005 D81 DIODE, 1N4004, 400V 50745-005 D82 DIODE, 1N4004, 400V 50745-005 D83 DIODE, 1N4004, 400V 50745-005 J1 CONNECTOR, RA XLR, M-3 59892-003 J2 CONNECTOR, RA XLR, M-3 59892-003 J3 CONNECTOR, RA XLR, M-3 59892-003 J4 CONNECTOR, RA XLR, M-3 59892-003 J5 CONNECTOR, RA XLR, M-3 59892-003 J6 CONNECTOR, RA XLR, M-3 59892-003 J7 CONNECTOR, RA XLR, M-3 59892-003 J8 CONNECTOR, RA XLR, M-3 59892-003 J9 CONNECTOR, RA SHIELDED, F-50 590121-002 P1 CONNECTOR, ST POLARIZED, 0.100, M-2 57763-402 P2 CONNECTOR, ST POLARIZED, 0.100, M-2 57763-402 P3 CONNECTOR, ST POLARIZED, 0.100, M-2 57763-402 P4 CONNECTOR, ST POLARIZED, 0.100, M-2 57763-402 P5 CONNECTOR, ST POLARIZED, 0.100, M-2 57763-402 P6 CONNECTOR, ST POLARIZED, 0.100, M-2 57763-402 P7 CONNECTOR, ST POLARIZED, 0.100, M-2 57763-402 P8 CONNECTOR, ST POLARIZED, 0.100, M-2 57763-402 P9 CONNECTOR, ST POLARIZED, 0.100, M-2 57763-402 P10 CONNECTOR, ST LOCKING, 0.156, M-3 57708-103 R1 RESISTOR, CF, 1.8K OHM, 5%, 1W 52154-629 R2 RESISTOR, CF, 1.2K OHM, 5%, 1/2W 52154-456 Ref Des Description Part Number

57708-103 R1 RESISTOR, CF, 1.8K OHM, 5%, 1W 52154-629 R2 RESISTOR, CF, 1.2K OHM, 5%, 1/2W 52154-456 R3 RESISTOR, CF, 1.2K OHM, 5%, 1/2W 52154-456 R4 RESISTOR, CF, 1.2K OHM, 5%, 1/2W 52154-456 R5 RESISTOR, CF, 1.2K OHM, 5%, 1/2W 52154-456 R6 RESISTOR, CF, 1.2K OHM, 5%, 1/2W 52154-456 R7 RESISTOR, CF, 1.2K OHM, 5%, 1/2W 52154-456 R8 RESISTOR, CF, 1.2K OHM, 5%, 1/2W 52154-456 R9 RESISTOR, CF, 1.2K OHM, 5%, 1/2W 52154-456 R11 POTENTIOMETER, 100 OHM, 10%, 1W 523015-000 R12 RESISTOR, MF, 2.26K OHM, 1%, 1/2W 54054-226 R13 RESISTOR, MF, 124 OHM, 1%, 1/4W 54042-124 R14 RESISTOR, WW, 10 OHM, 10%, 5W 50155-011 R21 POTENTIOMETER, 100 OHM, 10%, 1W 523015-000 R22 RESISTOR, MF, 2.26K OHM, 1%, 1/2W 54054-226 R23 RESISTOR, MF, 124 OHM, 1%, 1/4W 54042-124 R24 RESISTOR, WW, 10 OHM, 10%, 5W 50155-011 R31 POTENTIOMETER, 100 OHM, 10%, 1W 523015-000 R32 RESISTOR, MF, 2.26K OHM, 1%, 1/2W 54054-226 R33 RESISTOR, MF, 124 OHM, 1%, 1/4W 54042-124 R34 RESISTOR, WW, 10 OHM, 10%, 5W 50155-011 R41 POTENTIOMETER, 100 OHM, 10%, 1W 523015-000 R42 RESISTOR, MF, 2.26K OHM, 1%, 1/2W 54054-226 R43 RESISTOR, MF, 124 OHM, 1%, 1/4W 54042-124 R44 RESISTOR, WW, 10 OHM, 10%, 5W 50155-011 R51 POTENTIOMETER, 100 OHM, 10%, 1W 523015-000 R52 RESISTOR, MF, 2.26K OHM, 1%, 1/2W 54054-226 R53 RESISTOR, MF, 124 OHM, 1%, 1/4W 54042-124 R54 RESISTOR, WW, 10 OHM, 10%, 5W 50155-011 R61 POTENTIOMETER, 100 OHM, 10%, 1W 523015-000 R62 RESISTOR, MF, 2.26K OHM, 1%, 1/2W 54054-226 R63 RESISTOR, MF, 124 OHM, 1%, 1/4W 54042-124 R64 RESISTOR, WW, 10 OHM, 10%, 5W 50155-011 R71 POTENTIOMETER, 100 OHM, 10%, 1W 523015-000 R72 RESISTOR, MF, 2.26K OHM, 1%, 1/2W 54054-226 R73 RESISTOR, MF, 124 OHM, 1%, 1/4W 54042-124 R74 RESISTOR, WW, 10 OHM, 10%, 5W 50155-011 R81 POTENTIOMETER, 100 OHM, 10%, 1W 523015-000 Ref Des Description Part Number R82 RESISTOR, MF, 2.26K OHM, 1%, 1/2W 54054-226 R83 RESISTOR, MF, 124 OHM, 1%, 1/4W 54042-124 R84 RESISTOR, WW, 10 OHM, 10%, 5W 50155-011 T11 TRANSFORMER, AUDIO 559001-000 T12 TRANSFORMER, AUDIO 559001-000 T21 TRANSFORMER, AUDIO 559001-000 T22 TRANSFORMER, AUDIO 559001-000 T31 TRANSFORMER, AUDIO 559001-000 T32 TRANSFORMER, AUDIO 559001-000 T41 TRANSFORMER, AUDIO 559001-000 T42 TRANSFORMER, AUDIO 559001-000 T51 TRANSFORMER, AUDIO 559001-000 T52 TRANSFORMER, AUDIO 559001-000 T61 TRANSFORMER, AUDIO 559001-000 T62 TRANSFORMER, AUDIO 559001-000 T71 TRANSFORMER, AUDIO 559001-000 T72 TRANSFORMER, AUDIO 559001-000 T81 TRANSFORMER, AUDIO 559001-000 T82 TRANSFORMER, AUDIO 559001-000 VR1 IC, VOLTAGE REGULATOR, LM317 53290-000 VR2 IC, VOLTAGE REGULATOR, LM317 53290-000 VR3 IC, VOLTAGE REGULATOR, LM317 53290-000 VR4 IC, VOLTAGE REGULATOR, LM317 53290-000 VR5 IC, VOLTAGE REGULATOR, LM317 53290-000 VR6 IC, VOLTAGE REGULATOR, LM317 53290-000 VR7 IC, VOLTAGE REGULATOR, LM317 53290-000 VR8 IC, VOLTAGE REGULATOR, LM317 53290-000

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