Keysight Technologies E4360 Series, Руководство по обслуживанию, Страница: 36 / 75

3 Calibration
36 Series E4360 Service Guide
Calibration Description
Refer to the “Equipment Required” section in chapter 2 for a list of the
equipment required for calibration. Also refer to “Measurement
Techniques” for information about connecting the voltmeter and current
shunt. A general outline of the calibration procedure is as follows:

Enter the calibration mode by providing the correct password. The
password is factory-set to 0 (zero). You can change the password
once calibration mode is entered to prevent unauthorized access to
the calibration mode. Refer to “Change the Calibration Password” at
the end of this section.

Calibrate only ONE channel at a time. The calibration commands
accept only a single channel number for the channel parameter.
Calibration cannot be performed on channels that have been
grouped. If any channels have been grouped, they must be
ungrouped before they can be calibrated.

When calibrating the instrument using SCPI commands, most steps
involve sending a *OPC? query to synchronize with the instrument’s
command completion before proceeding. The instrument’s response
must be read each time *OPC? is given.

Once started, you must perform the complete calibration procedure
in its entirety. As each calibration section is completed, the
instrument calculates new calibration constants and begins using
them. However, these constants are not saved in nonvolatile
memory until a SAVE command is explicitly given.

Exit the calibration mode either by logging out of the front panel
menu or by sending CAL:STAT OFF. Note that any channels that
were calibrated but not saved will revert to their previous calibration
constants.
Calibration Switches
Two switches control the access to calibration commands. The switches
are on the interface board and are accessible by removing the top cover.
Refer to “Accessing the Calibration switch” in chapter 4. Switches 1 and
2 set the calibration configuration as follows:
Sw 1 Sw 2 Description
Normal ON ON This is the default or as-shipped switch setting. The
calibration functions are accessible after entering a
numeric password. The default password is 0 (zero).
Clear
password OFF ON
The admin/calibration password is reset to 0 when the
instrument is first powered on. Use this setting if you have
forgotten the password.
Inhibit
calibration OFF OFF All calibration commands are disabled. This is useful where
calibration access is guarded by instrument seals.