Keysight Technologies InfiniVision 6000L Series, Руководство по обслуживанию

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Calibrating and Adjusting
3
6000L Series Oscilloscopes Service Guide 51
User Calibration
Perform user-calibration:
• Each year or after 2000 hours of operation.
• If the ambient temperature is >10° C from the calibration temperature.
• If you want to maximize the measurement accuracy.
The amount of use, environmental conditions, and experience with other
instruments help determine if you need shorter User Cal intervals.
User Cal performs an internal self-alignment routine to optimize the signal path in
the oscilloscope. The routine uses internally generated signals to optimize circuits
that affect channel sensitivity, offset, and trigger parameters. Disconnect all
inputs and allow the oscilloscope to warm up before performing this procedure.
Performing User Cal will invalidate your Certificate of Calibration. If NIST (National
Institute of Standards and Technology) traceability is required perform the
procedures in Chapter 2 in this book using traceable sources.
To perform User Cal
1 Set the rear-panel CALIBRATION switch to UNPROTECTED.
2 Connect short (12 inch maximum) equal length cables to each analog channel’s
BNC connector on the front of the oscilloscope. You will need four equal-length
cables for a 4-channel oscilloscope.