Agilent Technologies E3631-90002, User Manual, Page: 61 / 166

Chapter 3 Front-Panel Operation
Calibration Overview
60
To Secure Against Calibration
You can secure the power supply against
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”.
Be sure to read the security code rules on page 58 before attempting to
secure the power supply.
• Front-Panel Operation:
If the power supply is unsecured, you will see the above message for one
second by holding the
key for 5 seconds when you turn on
the power supply. To secure 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
key.
Notice that you should omit the “H P” and enter the remaining numbers
as shown below.
When you press the key to save the change, you will see the
message below. The secured 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.
• Remote Interface Operation:
CALibrate:SECure:STATe {OFF|ON},
<code>
To secure the power supply, send the above command with the same code
as used to unsecure. For example,
"CAL:SEC:STAT ON, HP003631"
UNSECURED
000000 CODE
SECURED
Calibrate
Secure
Secure
Secure