Kaman KD-2300 - Manual (Page 38)

KD-2300 Instruction Manual Appendix B: System Modifications
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Appendix B: System
Modifications
Maximum Sensitivity (Gain Control)
When increased sensitivity is needed, rotate the GAIN control
clockwise until reaching the desired sensitivity. If the GAIN control
reaches the full clockwise position before reaching the desired
sensitivity, perform the internal gain modification described below:
Remove the cover of the unit by removing the eight cover screws.
Using a hobby knife, cut the trace marked “G” (refer to the figure
below). This procedure increases the maximum obtainable gain by
approximately two times. System frequency response will reduce to
approximately 10kHz (-3dB point) but will vary depending upon sensor
and gain settings.
Zero Control Sensitivity
If the OFFSET control has too little or too much adjustment capability,
adjust the sensitivity as follows:
Remove the cover of the unit, by removing the eight cover screws.
Locate the traces marked “H” and “L” (refer to the figure below). As
shipped:
MAXIMUM SENSITIVITY -do not cut either trace.
MEDIUM SENSITIVITY -cut the trace marked “H”.
MINIMUM SENSITIVITY -cut the trace marked “L”.
This adjustment removes an offset resistor from the circuit