Agilent Technologies E3631-90002, User Manual, Page: 60 / 166

Chapter 3 Front-Panel Operation
Calibration Overview
59
3
To Unsecure for Calibration
You can unsecure the power supply for
calibration either from the front panel or over the remote interface.
The
power supply is secured when shipped from the factory, and the security
code is set to “HP003631”
.
• Front-Panel Operation
If the power supply is secured, you will see the above message for one
second by holding the
key for 5 seconds when you turn on
the power supply. To unsecure the power supply, press the key
after the “CAL MODE” message is displayed in the calibration mode,
enter the security code using the knob and resolution selection keys,
and then press the
key.
When you press the key to save the change, you will see the
message below for one second if the security code is correct. The
unsecured setting is stored in
non-volatile memory, and does not change
when power has been off or after a remote interface reset. To exit the
calibration mode, turn the power off and on.
Notice that if the security is incorrect, the power supply returns to the
code entering mode for you to enter the correct code.
• Remote Interface Operation:
CALibrate:SECure:STATe, {OFF|ON},
<code>
To unsecure the power supply, send the above command with the same
code used to secure. For example,
"CAL:SEC:STAT OFF, HP003631"
SECURED
000000 CODE
UNSECURED
Calibrate
Secure
Secure
Secure