User Manual

5
The PRO3000 Toner
The polarity/continuity LED is just above the toner's slide switch. The
function of this LED depends on the toner's mode:
In continuity mode, it is a single-color LED (red), which indicates
whether or not there is continuity.
In polarity mode, it is a dual-color LED (red and green), which
indicates the polarity of a DC- powered pair of wires (e.g., a
telephone line).
The toner can drive up to 10 miles (16 km) of 24 AWG twisted pair.
Note
To preserve the 9 V battery, turn the toner off and put the
slide switch in the TONE position when the toner is not in
use.
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Figure 2. PRO3000 Toner