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Chapter 3 Front-Panel Operation
Calibration Overview
70
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 “HP003633”* or “HP003634”**.
Be sure to read the security code rules on page 68 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 (
Calibrate) key for 5 seconds when you turn on the
power supply. To secure the power supply, press (
Secure) key after the
“CAL MODE” message is displayed in the calibration mode, enter the security
code using the control knob and resolution selection keys, and then press
(
Secure) key.
Notice that you should omit the “HP” and enter the remaining numbers as
shown below.
When you press (
Secure) 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:
CAL:SEC:STAT {OFF|ON},<code> Secure or unsecure the power supply
To secure the power supply, send the above command with the same code as
used to unsecure. For example,
‘‘
CAL:SEC:STAT ON, HP003633
’’
(E3633A) or
‘‘
CAL:SEC:STAT ON, HP003634
’’
(E3634A)
UNSECURED
000000 CODE
SECURED
Calibrate
Error
I/O
Config
Secure
I/O
Config
Secure
I/O
Config
Secure
*For Agilent E3633A Model **For Agilent E3634A Model