CHAPTER 3: Operation
NOTE: In reverse mode, the light indicators are opposite.
AUXILIARY POWER LIGHT — Indicates the presence and polarity of auxiliary power.
Green light — Auxiliary power present, normal polarity.
Red light — Auxiliary power present, reverse polarity.
No light — No auxiliary power present.
TEST STATUS (PASS/FAIL) LIGHTS — Reflects test status.
INITIATE LIGHT (yellow LED) — The INITIATE button and light are used in testing modes. When performing certain test functions, this LED indicates that the INITIATE button must be pushed.
3.5 Modes of Operation
You can select a mode of operation by turning the selector dial (see Figure
LINE TEST — Verifies that a terminal will be able to access the D channel.
NOTE: After selecting this function with the selector, depress the INITIATE button and the test will begin.
Pass — Good line.
Fail — Bad line.
RECEIVE — Monitors activity on the terminal’s receive pair. Pass — Test Set is in SYNCH with the NT1.
Fail — Test Set is not in SYNCH with the NT1.
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