Section 363-712-100
Revision 02
Page 10
C. INSTALLATION AND TEST
9. UNPACKING
9.01
Upon receipt of the equipment, proceed as
follows:
1. Unpack each container and visually inspect it
for signs of damage. If the equipment has been
damaged in transit, immediately report the
extent of damage to the transportation
company and to PairGain. Order replacement
equipment if necessary.
2. Check the contents versus the packing list to
ensure complete and accurate shipment. If the
shipment is short or irregular, contact PairGain
as described in Section 5. If you must store the
equipment for a prolonged period, store the
equipment in its original container.
10. TURN-UP AND TESTING
10.01
Table 2 provides step-by-step turn-up and test
procedures for the FLL-712 COT Line Unit.
11. TROUBLESHOOTING
11.01
Table 3 provides troubleshooting procedures
based on indications displayed by the front panel
indicators of FLL-712 COT Line Unit. Table 4 contains a
glossary of PG-Flex terms.
TABLE 2. FLL-712 COT LINE UNIT TURN-UP AND TESTING
CAUTION
Observe normal electrostatic discharge precautions when handling electronic equipment. Do not hold
electronic plugs by their connector edges. Do not touch components or circuitry.
Step
Operation
Action
Observe
1
Install COT
Line Unit
a. Insert the FLL-712 COT Line
Unit into the COT Shelf.
•
All LEDs on the COT Line Card turn on
for approximately 7 seconds, then scan
from top to bottom
•
The PWR LED and FAULT LED turn
on
b. After about 4 seconds, COT
enters power management
routine. If line powering fails,
COT waits about 1 minute
before attempting again.
•
PWR LED flashes
c. If line powering succeeds,
HDSL communications begin
synchronizing.
•
LOOP 1 SYNC and LOOP 2 SYNC
flash
d. After the system has powered
up, established HDSL
synchronized communications,
and no calls are in progress,
observe the COT Line Unit
front panel indicators.
POWER
on
LOOP 1 SYNC
on
LOOP 1 MARGIN off
LOOP 2 SYNC
on
LOOP 2 MARGIN off
TEST
off
FAULT
off
2
Measure
Voltages
a. Make the following
measurements on the COT
Shelf backplane:
•
-130 Vdc, ±10%, between
HDSL_T1 and Chassis Ground.
•
0 Vdc to +120 Vdc between HDSL_T2
and Chassis Ground
