Keysight InfiniiVision HD3 Series - To Perform User Calibration; To Perform Hardware Self Test

288 Keysight InfiniiVision HD3-Series Oscilloscopes User's Guide
22 Utility Settings
To perform user calibration
Perform user-calibration:
• Every three years or after 6000 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.
Performing User Calibration will invalidate your Certificate of Calibration. If NIST
(National Institute of Standards and Technology) traceability is required, perform
the "Performance Verification" procedure in the Service Guide using traceable
sources.
To perform user calibration:
1 Disconnect all inputs from the front and rear panels, including the digital
channels cable. Disconnect the waveform generator output. No cables are
needed.
2 Allow the oscilloscope to warm up 30 minutes before performing this
procedure.
3 From the main menu, choose Utilities > Service....
4 In the Service dialog box, select the Calibration tab.
5 Clear the Cal Protect check box.
6 Select Start User Calibration.
To perform hardware self test
To perform a series of internal procedures to verify that the oscilloscope is
operating properly:
1 From the main menu, choose Utilities > Service....
2 In the Service dialog box, select the Diagnostics tab.
CAUTION
Disconnecting oscilloscope inputs and the waveform generator output before user
calibration is important because the oscilloscope's measurement accuracy depends
on proper calibration.