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4.3. Preamp
1
2
The Preamp amplifies ultrasonic signals to improve the
signal-to-noise ratio for transmission over long cables. The
preamp is placed near the probe in the return path from the
probe to the instrument.
1
In connector
2
Out connector
3
Gain indicator
4
Mode button
5
Low battery
indicator
3
4
Fig. 10 - Preamp
Connects to probe output.
Connects to instrument input.
Lights illuminate to show the current
gain setting.
Press to turn the preamp on and
change gain setting. Hold to turn
preamp off.
Battery replacement is recommended
when light illuminates.
PAGE 10 of 24
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