Mohr CT100 - Set Manual Calibration Values; Capacitive Load Calibration

Appendix D: Calibration Procedures
Set manual calibration values
Set manual calibration values
Rough calibration values should be set manually before performing each specific calibration.
To enter manual calibrations from the test screen:
1) Enter the Manual Calibration menu by pressing Button 21 from the Calibration submenu.
Before setting manual calibration values, clear the existing temperature lookup table. To clear
the table select Clear Temp Lookup. A warning message will appear. Press Button 4 for OK
to continue.
To set the Step Pulse Reference:
1) Press Step Pulse Ref (Button 20) to display the Driver Comp Value on the CT100 screen.
2) Twist the M-FUNCTION knob until the displayed Driver Comp Value reads 10000. This will
ensure the driver activation signal is timed correctly.
To set the Timebase DAC value:
1) Display the Sampler Comp value by pressing Timebase DAC (button 21).
2) Twist the M-FUNCTION knob until the displayed Sampler Comp value reads 35000. This
will ensure that the timebase DAC sampler voltage is set correctly during calibration.
To set the Hybrid Reference Value:
1) Display the Hybrid Comp value on the CT100 screen by pressing Hybrid Reference (button
22).
2) Twist the M-FUNCTION knob until the displayed Hybrid Comp value reads 45000. This will
ensure the Hybrid reference voltage is accurately set during calibration.
Choose the CABLE LEN menu option to set the maximum cable length to a new setting.
Set the Step Pulse Reference to 10000, Timebase DAC value to 35000, and Hybrid Reference
Value to 45000.
Choose the CABLE LEN menu option again to set the maximum cable length to the third setting.
Set the Step Pulse Reference to 10000, Timebase DAC value to 35000, and Hybrid Reference
Value to 45000.
Capacitive load calibration
Capacitive load calibration
1) From the Calibration submenu select the Capacitive Load item (Button 3).
Capacitive load calibration will commence.
Mohr CT100 / CT100HF Operator's Manual 81