16 S-Series Oscilloscopes Service Guide
2 Calibration
Procedure
1 Let the oscilloscope warm up before running the calibration.
The user calibration should be done only after the oscilloscope has run for 30
minutes at ambient temperature with the cover installed. Calibration of an
oscilloscope that has not warmed up may result in an inaccurate calibration.
2 Click Utilities > Calibration....
3 Clear the Cal Memory Protect check box.
You cannot run a user calibration if this check box is selected. See the following
figure.
4 Click Start Full User Cal, then follow the instructions on the screen.
The routine will prompt you to follow these steps:
a Disconnect everything from all inputs and Aux Out.
b Select the level of calibration you want to perform.
• Standard Calibration—Time scale calibration will not be performed. Time
scale calibration factors from the previous time scale calibration will be used
and the 10 MHz reference signal will not be required. The remaining
calibration procedure will continue.
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