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Figure 9 Coaxial Cable & Continuity Test
Validating Telephone Service and Polarity：
Please follow the following steps to check the polarity of telephone
lines:
1. Connect the red and black alligator clip of the Transmitter to the
telephone line jack or socket or punch-down block.
2. Press
indicator will light up. Then press
indication feature and the LED indicator will light up. According
to the function of the phone positive/negative polarity test start.
3. 「POL－/G，POL＋/R」LED indicator is dual color (Red/ Green).
The LED indicator of the Transmitter indicates the status as
below:
• Red light：Red alligator clip at positive (+) polarity；Black
• Green light：Red alligator clip at negative (-) polarity；
button to turn on the power, "POWER/ BAT LOW"
alligator clip at negative (-) polarity.
Black alligator clip at positive (+) polarity.
to operate the polarity
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