InstallationLTPH-UM-1237-04
Table 2. Terminal Block (TB1)
Terminal | Description |
| |
1 | -48V_A |
| |
2 | -48V_B |
| |
3 | BATTERY RETURN |
| |
4 | FGND |
| |
1Remove the fuse(s) in the equipment bay fuse panel for the circuit(s) where the HRM-238 shelf battery wire(s) will terminate.
2Connect one end of the frame ground wire to Terminal 4 (FGND) on TB1 of the HRM-238 shelf and attach the other end of the frame ground wire to the CO ground wire termination point.
3Connect the -48 Vdc CO battery to the HRM-238 shelf (Figure 7):
a Connect a wire to the HRM-238 shelf TB1 Terminal 1 (-48V_A) for Primary CO battery. b Connect a wire to the HRM-238 shelf TB1 Terminal 2 (-48V_B) for Redundant CO battery.
cConnect the battery common wire to HRM-238 shelf TB1 Terminal 3 (BATTERY RETURN) of the HRM-238 shelf and attach the other end to CO battery ground source(s).
dConnect the wire(s) from the HRM-238 TB1 Terminal 1 and Terminal 2 to the CO -48 Vdc power termination point(s).
Terminal 2 | Terminal 4 to |
to -48 Vdc | frame ground (FGND) |
| | H0547-B |
| | |
Terminal 1 | Terminal 3 to battery |
to -48 Vdc | common (Battery Return) |
Figure 7. Connect -48 Vdc and Frame Grounds to TB1
INSTALLING COMMUNICATION WIRING
All wiring and connections for the HRM-238 shelf are on the back. Figure 5 on page 4 shows the shelf backplane and connectors. Connect the NMA wiring from the HRM-238 shelf to each HiGain or Megabit Modem line unit that will be managed using the steps beginning on page 7. Then, use the other connectors in “Connect to a LAN or Interconnect Shelves” on page 9 and “Connect to a Computer, Terminal, or Modem” on page 9 that are appropriate for your application.
6 | July 21, 2004 | HRM-238 List 1 |
