Section 10: Calibrating the Model 9100: AC Current Function
10.4-31
Final Width = 215mm
10.4.6.5
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 softkey 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 softkey 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 softkey and then press
the Factor softkey 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 one or more times until the cursor is positioned
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 softkey to transfer the target calibration point amplitude and frequency to the 9100 output control display.
7. To change the target calibration point frequency, press the TAB
key one or more times until the cursor is positioned on the
output frequency control display. Now use any of the 9100's normal editing modes to change this frequency value. (Note that
the new value must lie within the limits specified in the tables opposite.)
8. Press the ON key to turn the 9100 output on.
9. Ensure that cursor control is returned 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's 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.)
10. 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.
11. Press the OFF key to turn the 9100 output off.
12. Repeat steps (2) to (11) for each of the target values displayed in the target selection screen.
13. Repeat steps (1) to (12) 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 AC Current, refer to Table 10.4.2.1 on page 10.4-5 for information on
sequencing calibrations.
