Section 100-427-100
Revision 04
Page
12 of 16
6.07 DS1 Connections.
Connect the customer interface DS1 circuits to the enclosure as follows:
♦
RJ-48C:
For List 1 enclosures, connect the DS1 leads to the RJ-48C jacks (see Figure 7) located
on the left side of the HRE-427.
♦
RJ-48X:
For List 2 enclosures, connect the DS1 leads to the RJ-48X jacks (see Figure 8 on
page 13) located on the left side of the HRE-427.
♦
RJ-48H:
P2 provides a standard USOC RJ-48H male connector (see Figure 9 on page 14). To use
this interface, remove the RJ-48C cable assembly attached to P2 and insert a mating cable with
female connector in its place. Or, remove the other end of the P2 cable from the RJ-48C block and
insert the mating cable with a female connector into it.
6.08 RS-232 Connections
. Provision is made for connecting a local diagnostic and status-monitoring
terminal to the front panel of some remote units. Similar access to other units is available by direct wire-
wrap access to pins 37 and 38 of each unit’s card connector, which provides data in and data out
respectively (typical RS-232 pin 2 and 3 functions). Circuit ground is available on pin 17 of the card
connector (see Figures 5 on page 10).
6.09 Local Power Application
. Local power can be applied to the HRE-427 backplane from an AC to 48
volt DC power supply module located in the slot labeled PSU. The Westel 6060-03 (2 AMP), Wescom
8548-13 or equivalent 400 mechanic power supplies can be used. See HRE-427’s power supply bus
circuit shown in Figure 10 on page 15. The Wescom 8548-13 power supply has an external alarm
(EXT ALM) LED, which connects to the fuse alarm contact of all seven-slot, fuses (see Figure 10 on
page 15). This LED lights RED if any of the slots fuses opens.
Figure 7. List 1 RJ-48C Pin Assignment.
The RJ-48C jacks are located on the left side of List 1
enclosure.
