ADTRAN T400TAC Manuals

1 Section 61244065L1-5, Issue 1 61244.065L1-5A T400 TAC TEST ACCESS CARD INSTALLATION/MAINTENANCE PRACTICES Section 61244065L1-5 Issue 1, March 1997 CLEI #NCTEAAA _ _ _ 1. GENERAL Revision History Revisions to this practice will be summarized in this paragraph. This practice is an installation and maintenance guide for the ADTRAN T400 Test Access Card (TAC). Figure 1 is an illustration of the card. Features The ADTRAN T400 TAC is a test card for installing and troubleshooting circuits that have T400 mechanics. The TAC accesses the four pairs that connect of the card-edge socket for metallic and functional testing of the pairs. T400 TAC features include: • Plugs into ADTRAN T400 housings 1150087L1 and 1150043L1 and L2 • Provides complete testing of wire pairs • Easy-access of pairs The four position switch on the card provide a means for the following: • Looping back the co-pairs and field pairs • Bridging across pairs • Shorting loop 1 and loop 2 • Opening loop 1 and loop 2 Figure 1. ADTRAN T400 TAC 2. INSTALLATION After unpacking the unit, immediately inspect it for possible shipping damage. If damage is discovered, file a claim immediately with the carrier, then contact ADTRAN Customer Service. 3. APPLICATIONS The ADTRAN TAC enables the Telco craft personnel to test the wire pairs from the repeater location. Testing of the circuit is accomplished by removing the repeater, inserting the TAC, and then selecting the appropriate switch setting; i.e., LOOPBACK, LOOPTHRU, SHORT, or OPEN. 4. FUNCTIONAL DESCRIPTION The ADTRAN TAC may be used in the single T400 housing, part number 1150087L1, or the four-slot T400 housing, part number 1150043L1 or L2. The eight connectors, labelled LOOP1, T, R (CO), T, R (FIELD), provide direct access to the wire pair. LOOP1 and LOOP2 access points labelled T and R (CO) connect to the wire pairs toward the central office and access points labelled T and R (FIELD) connect to the wire pairs toward the customer (FIELD). The switch labeled SW1 selects the four functions illustrated in Figure 1 for the four states of LOOPBACK, LOOPTHRU, SHORT, and OPEN. Trademarks: Any brand names and product names included in this document are trademarks, registered trademarks, or trade names of their respective holders. C A U T I O N ! SUBJECT TO ELECTROSTATIC DAMAGE OR DECREASE IN RELIABILITY. HANDLING PRECAUTIONS REQUIRED. LOOP BACK LOOP THRU SHORT OPEN LOOP 1 LOOP 2 P7 T P13 R P41 T P47 R T P5 R P15 T P55 R P49 CUST NET LOOP 1 LOOP 2 P7 T P13 R P41 T P47 R T P5 R P15 T P55 R P49 CUST NET LOOP 1 LOOP 2 P7 T P13 R P41 T P47 R T P5 R P15 T P55 R P49 CUST NET LOOP 1 LOOP 2 P7 P5 T NET CUST P13 P15 R T R LOOP BACK LOOP THRU SHORT OPEN SW1 P41 P55 T NET CUST P47 P49 R T R P17 P1/P11FRM GND -48 RET P35 -48V 1996 5244.065-1D c LOOP 1 LOOP 2 P7 T P13 R P41 T P47 R T P5 R P15 T P55 R P49 CUST NET CONTENTS 1. GENERAL ......................................................................1 2. INSTALLATION ...............................................................1 3. APPLICATIONS...............................................................1 4. FUNCTIONAL DESCRIPTION..........................................1 5. TEST SETUPS ................................................................2 6. MAINTENANCE...............................................................2 7. WARRANTY AND CUSTOMER SERVICE........................2 FIGURES Figure 1. ADTRAN T400 TAC ................................................1 Figure 2. SW1 Loopback Configuration ...................................2 Figure 3. SW1 Loopthru Configuration ....................................2 Figure 4. SW1 Short Configuration..........................................2 Figure 5. SW1 Open Configuration .........................................2 TABLES Table A. Available Access ......................................................2