PairGain PG-Flex, Manual

Page: 57 / 168

Installing the Central Office Terminal Equipment
49
Power-Up the System
When the COT shelf is configured for split power, insert a 5 amp fuse in the equipment bay's fuse
panel for each circuit (two circuits) where the PG-Flex CO battery wires are terminated. When the
FCS-719 List 4B COT shelf is powered from a single battery feed, insert a 10 amp fuse in the
equipment bay’s fuse panel where the PG-Flex CO battery wire is terminated.
Verify System Voltages
1
Verify that there is a minimum of -42 Vdc and a maximum of -56 Vdc between the TB1
(-48V_A) and TB4 (RTN_A) screw terminals on the COT shelf.
2
When the COT shelf is split powered, verify that there is a minimum of -42 Vdc and a maximum
of -56 Vdc between the TB2 (-48V_B) and TB3 (RTN_B) screw terminals on the COT shelf.
3
Visually verify the HDSL lines are terminated properly and with the correct polarity.
4
Verify that the HDSL lines are "dry":
a
There should be 0 Vdc between the Tip and Ring, Tip and Ground, and Ring and Ground
of each of the HDSL circuits terminated on the shelf.
b
There should be > 100 kohm resistance between the Tip and Ring, Tip and Ground, and
Ring and Ground of each of the HDSL circuits terminated on the shelf.
5
Replace the clear Plexiglass cover.
The following verifications should be done before any cards are inserted into the COT shelf.