Northern Telecom QCA146 Installation And Testing Instructions page 13

3-4 Installation
2-Mb/s Remote Peripheral Equipment
Chart 3-1 (continued)
QCA146 RPE cabinet installation
Step P r o c e d u r e
15 Disconnect the power line cord from the commercial ac power
supply.
16 Connect the 6 AWG building ground wire to the ground lug
identified by a ground symbol at the rear of the cabinet
(Figure 2-1).
17 If required, install reserve battery unit as described in Chart 2-
3.
18 Install connecting blocks at cross-connect terminal. A typical
wall-mounted terminal block layout is shown in Figure 2-2.
19 If a QUA6 Power Fail Transfer Unit (PFTU) is provided, install
unit as described in Chart 2-4.
20 If required, install alarm and transfer (P10) wiring as described in
Chart 2-5.
21 Install and terminate Peripheral Equipment (PE) cables from
connectors A through G (first tier) and A through F (second and
third tiers if equipped) at the rear of each PE shelf to cross-
connect terminal (Figure 2-3). Cable terminating sequence is
given in Table 2-A.
22 Install and connect two 75-ohm coaxial cables from the
connectors at the rear of the RPE shelf (Figure 2-4) to Line
Terminal Units (LTUs) for each loop.
23 Install and connect cable for customer defined alarms to alarm
cable connector on RPE shelf backplane (Figure 2-4). Refer to
553-2741-200 (X08) or 553-2931-200 (X11 Supplementary
Features) for connection information.
24 Ensure that the circuit packs are in their assigned position in the
RPE shelf (Figure. 2-5).
Note: Three Bus Terminating Units (BTUs) are required in
Appendix 1 to 553-2741-200