Galaxy Audio CRICKET POLARITY TEST SET - Manual (Page 6)

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the test and the polarity being checked is that
of a speaker connected to the amplifier output.
Never use the "HI" position for balanced
continuity tests, as continuity fault
indications are available only for unbalanced
conditions in this position.
B. Receive unit: When you first turn the unit on, and
after extended use, you should test the battery,
using the power switch "BAT" position. A weak
battery can cause erratic readings.
1. CON/POL: (located on rear panel) This switch
should generally remain in the "POL" position
for all tests other than cable tests. When
testing balanced or unbalanced cables use the
"CON" position. Never use the "POL" position
when testing cables, as the only fault
indication available in this position is for
reversal of polarity, which, alone, may not
indicate that a cable is, in fact, properly
terminated.
2. GAIN: ALWAYS start with the gain control
in the fully counterclockwise position,
bringing it up slowly until only one LED
lights.
IV. How to test
A. Self test: Set the send unit to "SPKR" position,
receive unit to "MIC" and "POL". Place the receive
unit directly (1" to 3") in front of the send
unit's speaker. The green LED should light on the
receive unit.