Calibrating and Adjusting 3
6000 X-Series Oscilloscopes Service Guide 57
User Calibration
Perform user-calibration:
• Every two years or after 4000 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 Calibration intervals.
User Calibration 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 Calibration 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 Calibration
The user calibration procedure requires the included calibration BNC cable
(54609-61609).
To perform user calibration:
1 Disconnect all inputs from the front and rear panels, including the digital
channels cable on an MSO, and allow the oscilloscope to warm up 30 minutes
before performing this procedure.
2 Press the rear-panel CAL button to disable calibration protection.
3 Press the [Utility] key; then, press the Service softkey.
4 Press the Start User Calibration softkey.
User Calibration Status
Pressing the User Calibration Status softkey displays the following summary results
of the previous User Calibration, and the status of probe calibrations for probes
that can be calibrated. Note that AutoProbes do not need to be calibrated, but
InfiniiMax probes can be calibrated.
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