Keysight E3631A, Service Manual

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3 Calibration Procedures
78 Keysight E3631A Service Guide
[1]
For serial MY53xx6xxx, apply the short at JP2 (located near the main controller
U10 on the top board). See the component locator drawing for the top PC board
(MY53xx6xxx) in Chapter 6.
[2]
For serial MY53xx6xxx, remove the short at JP2.
Calibration count
The calibration count feature provides an independent "serialization" of your
calibrations. You can determine the number of times that your power supply has
been calibrated. By monitoring the calibration count, you can determine whether
an unauthorized calibration has been performed. Since the value increments by
one for each calibration parameter (see Table 3-3 on the next page), a complete
calibration increases the value by 6 counts.
– The calibration count is stored in non-volatile memory and does not change
when power has been off or after a remote interface reset. Your power supply
was calibrated before it left the factory. When you receive the power supply,
read the calibration count to determine its value.
– The calibration count increments up to a maximum of 32,767 after which it
wraps around to 0. No way is provided to program or reset the calibration
count.
Calibration message
You can use the calibration message feature to record calibration information
about your power supply. For example, you can store such information as the last
calibration date, the next calibration due date, the power supply's serial number,
or even the name and phone number of the person to contact for a new
calibration.
You can record and read information in the calibration message from the remote
interface only.
– The calibration message may contain up to 40 characters.
– The calibration message is stored in non-volatile memory and does not change
when power has been off or after a remote interface reset.