Chapter 3 Front-Panel Operation
Calibration Overview
62
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 60 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
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