Lucent Technologies SLC-2000 Access System Central Office Terminal, Assembly Manual

Page: 274 / 284

A3-4 Issue 1 November 1998
363-208-010, Appendix 3
Test Head Installation
Test Head Connections
General
The test head is powered (via J12) from -48v dc supplied by a battery supply
provided by the customer. A separate ringing supply provides 20Hz ringing to the
test head via the J15 connector.
The physical interface from the test head J13 connector to the SLC-2000 system
is via the Access Resource Management (ARM) shelf's DS1 TIMING OUT/RT
RMU LINK connector J44. This is a DB9 connector with a RS-232 interface.
The analog connections to the voice frequency pairs and to the test access path
(TAP) are via J14.
Power and Ringing Cables
The following steps are performed when the 955-7000xxx037 and the
955-7000xxx038 cables are provided to obtain battery and ringing voltages from
the miscellaneous power supplies.
These cables provide the -48V/-48VRTN and the +20Hz/-20Hz ringing
connections to the miscellaneous power supplies. See Figure 1-1.
Step 1: Locate the test head's 955-7000xxx037 and 955-7000xxx038 dangler
cables.
Step 2: Mate the P12 connector of the 955-7000xxx037 cable with J12 on the
test head.
Step 3: Mate the P15 connector of the 955-7000xxx038 cable with J15 on the
test head.
Control Link Cables
The following steps are performed when the 955-7000107 or the 955-7000xxx035
cable is provided to obtain control signals from the
SLC-2000 Access System
ARM shelf.
These cables are the control link with the test head. See Figure 1-1.
Step 1: Locate the test head's 955-7000107 or 955-7000xxx035 dangler cable
(RS232/J13).
Step 2: Mate the P13 connector with J13 on the test head.
Communications Cable
This cable assembly, containing the test access pairs, is connected to the
Miscellaneous Pairs Cross-connect block. See Figure 1-1.
Step 1: Locate the test head's 955-7000000046 dangler cable and the 955-
70079 or 955-7000xxx036 cable.