Technical data

94 34405A User’s and Service Guide
4 Performance Tests and Calibration
AC Voltage Gain Adjustment Procedure
Review the “Test Considerations” on page 67 and “Gain Adjustment
Considerations” on page 90 sections before beginning this procedure.
1 Press to enter AC Voltage Gain Calibration.
2 The primary display will show the uncalibrated value and the
secondary display will show the reference value of Cal Item.
3 Configure each Cal Item shown in the adjustment table below.
4 Use (Auto) or (Range) to select the Cal Item.
5 Apply the input signal shown in the Input and Frequency columns of
the table below.
6 Enter the actual applied input (see “Entering Adjustment Values” on
page 86).
7 Press to start the adjustment. The CAL annunciator flashes to
indicate the calibration is in progress.
• Successful completion of each adjustment value is indicated by a
short beep and the primary display briefly showing PASS.
• An adjustment failure is indicated by a long beep, the primary
display showing FAiL and a calibration error number appearing in
the secondary display. Check the input value, range, function, and
entered adjustment value to correct the problem and repeat the
adjustment step.
8 Repeat steps 3 through 7 for each gain adjustment point shown in the
table.
9 Verify the AC Voltage Gain adjustments using the “AC Voltage
Verif ication Test” on page 77.
ACV
NOTE
Always complete tests in the same order as shown in the appropriate table.
Disp