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November 18, 2005
I
C
NSTALLING
OMMUNICATION
All wiring and connections for the HRM-238 shelf are on the back.
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 2-5. Then, use the other connectors appropriate for your
application, as discussed in
Terminal, or Modem" on page
Connect NMA Wiring
From the 50-pin Amphenol connector J8 and/or J4
backplane for each line unit being managed (refer to Step 3, 4, or 5 for your appropriate shelf type). Route wires
from the J8 and J4 connectors to the NMA 220-type mechanics shelves, as shown in
to
Table 2-2 on page 2-6
Ferrite Installation
Before connecting the telco cable for each port, clamp the provided ferrite around each telco cable at a distance no
greater than 6 inches from the 50-pin connector. Inclusion of the ferrite is necessary to meet the requirements of
FCC CFR 47, Part 15, Subpart B emissions.
IMPORTANT
Telco cables must be unshielded!
!
50-pin Amphenol
connector (J8)
Step
1
Remove the plastic cover from the 50-pin Amphenol connector J8 and/or J4.
2
Install a 50-pin female plug into the connector. Separate the wires for each of the 50 pins.
3
For 220-type mechanics:
Wire wrap the corresponding NMA wire from the plug to the NMA pin 46 on the shelf for each line unit
being managed. The wire leads from the Amphenol plug can be up to 3 meters maximum.
4
For 3192-type mechanics:
Wire wrap the corresponding NMA wire from the plug to the NMA pin 7 on the shelf for each line unit
being managed. The wire leads from the Amphenol plug can be up to 3 meters maximum.
5
For DDM+ type mechanics:
Wire wrap or soldier (depending on chassis manufacturer) the corresponding NMA wire from the plug to
the NMA pin 104 on the shelf for each line unit being managed. The wire leads from the Amphenol plug
can be up to 3 meters maximum.
LTPH-UM-1315-01
W
IRING
"Connect to a LAN or Interconnect Shelves" on page 2-7
2-8.
for P1 and P6 NMA connector information.
Figure 2-3. Connect NMA Wiring
Figure 1-2 on page 1-2
(Figure
2-3), wire directly to the appropriate NMA pin on the shelf
Action
Chapter 2: Installation
shows the shelf backplane
and
"Connect to a Computer,
Figure 1-3 on page
1-3. Refer
50-pin Amphenol
connector (J4)
H0548-B
2-5
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