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II.
USING YOUR TEST SET
A. LOOP CURRENT TERMINATION TEST:
1. Set the POWER SWITCH to the OFF position
2. Disconnect the premise equipment from the C.O. line.
3. Connect the C.O. line to the test set.
4. Set the TERMINATION SWITCH to the 600 or 900 ohm
5. Set the POSER SWITCH to the ON position.
a. To test modular systems (AT&T Merlin, etc.), plug
the incoming C.O. line cord into the modular jack on
the test sel.
b. To test modular "ground start" systems:
1.) Insert the T-Adapter provided with the kit into
the modular jack on the test set.
2.) Connect the line cord to the T-Adapter (line
one jack).
3.) Connect the alligator cord to the T-Adapter
(line two jack).
4.) Connect the red alligator lead to a local
ground.
c. To test non-modular systems, use the alligator clip
cord:
1.) Connect the green alligator clip to the "tip" side
and the red clip to the "ring" side of the C.O.
line.
2.) For "ground start" trunks, attach the yellow
alligator clip to a local ground.
position.
Setting depends on how the trunk is optioned for loop length.
Systems without loop length options are assumed to be 600
ohm for test purposes. The guideline is 600 ohm for loop
lengths of less than one mile.
The test set screen will display the D.C. loop current reading
for the line being tested and the Termination Switch setting
(600 or 900 ohm).
For Ground Start trunks, momentarily press the GROUND
START SWITCH to draw dial tone from the C.O. and obtain
a reading.
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