Section 10: Calibrating the Model 9100: DC Current Function
10.4-27
Final Width = 215mm
Calibration Procedure
1. Select the required hardware configuration by setting the 9100 output to a suitable value that uses the hardware configuration.
2. Set the Standards DMM to the appropriate measurement range.
3. Press the 9100's TARGET screen key to display the hardware configuration's target selection screen.
4. Use (a) or (b):
a. To use the target calibration points used during the previous calibration (as indicated by the displayed SAVED
CALIBRATION TARGETS), press the Factor screen key corresponding to the required target value, to display a 'calibrate'
screen for the target value.
b. To use the default target calibration points defined for this hardware configuration, press the DEFLT screen key and then
press the Factor screen key corresponding to the required target value, to display a 'calibrate' screen for the target value.
5. To change the amplitude of the target calibration point, press the TAB
key to position the cursor on the target value amplitude.
Now use any of the 9100's normal editing modes to change this value. (Note that the new value must lie within the minimum
and maximum limits specified in the tables opposite.)
6. Press the TRANSFR screen key to transfer the target calibration point value to the Model 9100's output control display.
7. Press the ON key to turn the 9100 output on.
8. Press the TAB
key to return the cursor to the 9100 output amplitude display, and increment or decrement this value using
the cursor controls and/or spinwheel until the reading on the Standards DMM connected to the 9100 front-panel terminals is
the same as the displayed target value. (Note: make sure to allow for any settling time required by the external measuring
instrument.)
9. When you are satisfied with the measurement, press the
CALIB
key to generate and implement the correction factor required
by the 9100 to ensure that its displayed output value and actual output value coincide. The screen will revert to the CAL mode
of the normal function screen, and the measured value should now be equal to the displayed output value.
10. Press the OFF key to turn the 9100 output off.
11. Repeat steps (2) to (10) for each of the target values displayed on the target selection screen.
12. Repeat steps (1) to (11) for each of the hardware configurations detailed in the tables opposite (also see note below).
Note: If other functions are being calibrated in addition to DC Current, refer to Table 10.4.2.1 on page 10.4-5 for information on
sequencing calibrations.
