Pro'sKit MT-7029 - Telephone Line Polarity and Status

15
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
button to turn on the power, “POWER/ BAT LOW”
indicator will light up. Then press
to operate the polarity
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
alligator clip at negative (-) polarity.
• Green light：Red alligator clip at negative (-) polarity；
Black alligator clip at positive (+) polarity.