2
61190852L2-5, Issue 3
61190852L2-5C
• Insert E220/DDM+ form factor
P/N 1190852L23
• Insert E220/Soneplex form factor
P/N 1190852L24
NOTE
The installation kit and adapter inserts described
here are not compatible with previous kit and
adapter assemblies.
Description
The HDSL CO Installation Kit simulates the operation
of the central office end of an HDSL circuit (with
installed CO line unit).
Make-or-break jacks and signal jacks in each
installation kit provide access to the HDSL circuit’s
loop 1 and loop 2 signals. Inserting a test cable into a
jack breaks the HDSL circuit at that point and delivers
the signal out of the jack.
The jacks can be used to insert an HDSL installation
kit into an HDSL circuit at different points (such as
the central office end or remote end) in order to test
circuit or line unit operation.
The jacks can also be used to connect HDSL
installation kits together to simulate an HDSL circuit’s
signal path. A fully operational HDSL circuit can be
created by connecting a CO Installation Kit to a
remote installation kit, and installing HDSL line units.
See
Figure 2
for an HDSL circuit simulation. To
simulate an HDSL circuit with a repeater, push IN the
repeater selection switch on the remote unit.
2. OPERATION
After unpacking the unit, inspect it for damage. If
damage is noted, file a claim with the carrier, then
notify ADTRAN. See
Warranty and Customer
Service
.
The CO Installation Kit is shipped complete with the
CO shelf, softcase, power cord, and dual bantam to
alligator clip cable.
Front Panel Features
The HDSL CO Installation Kit front panel features a
CO unit slot, two dual-bantam jacks, and two ground
lugs for ESD ground and earth ground. The CO unit
slot accepts an HDSL CO line unit. The CO LP1/LP2
signal jacks provide access to the CO line unit’s
(HTU-C) output signals to the remote end. These
signals are the loop 1 and loop 2 signals that drive the
HDSL circuit. The DSX TX and RX jacks provide
access to the DSX signals on a CO line unit installed
in the CO Installation Kit. These jacks can be used in
addition to DSX jacks on the front panel of the
HTU-C line unit. TX is an input jack and RX is an
output jack. See
Figure 3
for a diagram of front panel
features.
Figure 2. HDSL Circuit Simulation
CO
DSX Access
Jacks
Remote
DS1 Access
Jacks
CO
LP1/LP2
Signal Jacks
Repeater CO
Side LP1/LP2
Signal Jacks
Repeater
In/Out
Switch
852
Shelf
CO
Bay
851
Shelf
Repeater
Bay
851
Shelf
Remote
Bay
Repeater
Remote Side
LP1/LP2
Make/Break
Jack
Remote
LP1/LP2
Make/Break
Jack
HDSL 852 CO Power Shelf
HDSL 851 REPEATER/Remote Shelf
