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4.3. Preamp
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
Connects to probe output.
2
Out connector Connects to instrument input.
3
Gain indicator Lights illuminate to show the current
gain setting.
4
Mode button
Press to turn the preamp on and
change gain setting. Hold to turn
preamp off.
5
Low battery
indicator
Battery replacement is recommended
when light illuminates.
1
5
2
3
4
Fig. 10
- Preamp
