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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 Customer Service, see section 6.
The CO Installation Kit should be 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 DS1 TX and RX jacks provide
access to the DS1 signals on a CO line unit installed in
HDSL CO Power Shelf
CO
DS1 Access
Jacks
2
CO
Repeater CO
LP1/LP2
Side LP1/LP2
Signal Jacks
Signal Jacks
CO
Line Unit
Bay
Figure 2. HDSL Circuit Simulation
61190852L1-5, Issue 1
the CO Installation Kit. These jacks can be used in
addition to DS1 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.
CO Unit DS1
Signal Jacks
TX RX
DS1
CO Unit Slot
Ground Lugs
Figure 3. Front Panel Features
HDSL 851 Remote/REPEATER Shelf
Remote
LP1/LP2
Make/Break
Repeater
Jack
In/Out
Switch
Repeater
Line Unit
Bay
Repeater
Remote Side
LP1/LP2
Make/Break
Jack
TX and RX
CO LP1/LP2
Signal Jacks
LP1 LP2
HDSL
HDSL 852
CO POWER
WARNING
POTENTIALLY
HAZARDOUS
VOLTAGES MAY BE
PRESENT AT ALL
FRONT PANEL JACKS
ESD
GND
GND
1190852L1
Remote
DS1 Access
Jacks
Remote
Line Unit
Bay
61190852L1-5A
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