90 34410A/11A/L4411A Service Guide
3 Calibration Procedures
Ohms Gain Calibration Procedure
Review the “Test Considerations” on page 63 and “Gain Adjustment
Considerations” on page 82 sections before beginning this procedure.
Configuration: 4–Wire Ohms
This procedure adjusts the gain for both the 4–wire and 2–wire Ohms
functions, and the offset compensated Ohms function. The 100 MΩ and
1 GΩ range gains are derived from the 10 MΩ range and do not have
separate adjustment points.
1 Configure each function and range shown in the adjustment table
below.
2 Apply the input signal shown in the “Input” column of the table.
3 Enter the actual applied input resistance
(see “Entering Adjustment Values” on page 78).
a Successful completion of each adjustment value is indicated by the
message CAL SUCCEEDED flashing in the display.
b If a problem is encountered, the display will flash the message
CAL FAILED. Check the input value, range, function, and entered
adjustment value to correct the problem and repeat the adjustment
step.
4 Repeat steps 1 through 3 for each gain adjustment point shown in the
table.
5 Store the new calibration constants (“Storing the Calibration Constants” on
page 78.
6 Verify the Ohms Gain adjustments using the verification procedures
beginning on page 68.
Always complete tests in the specified order as shown in the appropriate table.
Each range in the gain adjustment procedure takes less than 10 seconds to complete.
To Next Page
Loading...
Need help?
General
