3 Calibration Procedures
52 Keysight E3633A and E3634A Service Guide
Closed-Case Electronic Calibration
The power supply features closed-case electronic calibration since no internal
mechanical adjustments are required for normal calibration. The power supply
calculates correction factors based upon the input reference value you enter. The
new correction factors are stored in non-volatile memory until the next calibration
adjustment is performed. (Non-volatile memory does not change when power has
been off or after a remote interface reset.)
Keysight Technologies Calibration Services
When your power supply is due for calibration, contact your local Keysight
Technologies Service Center for a low-cost calibration. The Keysight E3633A and
E3634A power supplies are supported on calibration processes which allow
Keysight Technologies to provide this service at competitive prices.
Calibration Interval
The power supply should be calibrated on a regular interval determined by the
accuracy requirements of your application. A 1-year interval is adequate for most
applications. Keysight Technologies does not recommend extending calibration
intervals beyond 1 year for any application. Keysight Technologies recommends
that complete re-adjustment should always be performed at the calibration
interval. This will increase your confidence that the Keysight E3633A and E3634A
will remain within specification for the next calibration interval. This criteria for
re-adjustment provides the best long-term stability.
If you calibrate the power supply over the remote interface, you must send the
*RST
command to the power supply or turn the power supply off and on again
after performing a calibration to ensure proper power supply operation.
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