Keysight 34450A - DC Current Gain Adjustments Procedure; Table 1-12 DC Current Gain Adjustment

1 Performance Tests and Calibration
Adjustments
32 34450A Service Guide
DC current gain adjustments procedure
Review the “Test Considerations” on page 5 and “Gain adjustment
considerations” on page 29 sections before beginning this procedure.
Calibration mode: DC current
1 Press or to select the calibration range.
2 The Measurement box displays the uncalibrated value and the
Calibration Point box displays the reference value.
3 Apply the input signal shown in the Calibration Point box, Table 1- 12
below.
4 Press to start the adjustment. The Status box displays
CALIBRATING indicates the calibration is in progress.
• Successful completion of each adjustment value is indicated by a
message in the Status box showing PASS.
• An adjustment failure is indicated by a message in the Status box
showing FAIL. Check the input value, range, function, and entered
adjustment value to correct the problem and repeat the adjustment
step.
5 Repeat steps 1 through 4 for each gain adjustment point shown in the
preset Calibration Point box.
6 When the calibration has been completed for the selected range, the
status box shows DONE, and the value in the Calibration Range box
flashes.
7 Increase the range and continue the calibration by repeating steps 1
through 4.
8 Verify the DC current gain adjustments using the “DC current gain
verification test” on page 12.
Table 1-12 DC current gain adjustment
Input Function Range
Input terminals open
[1]
DC current Any
20 µA, 70 µA, 100 µA, –20 µA, –70 µA, –100 µA 100 µA
0.2 mA, 0.7 mA, 1 mA, –0.2 mA, –0.7 mA, –1 mA 1 mA