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Chapter 3 Front-Panel Operation
Calibration Overview
69
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 “HP003633”* or “HP003634”**
• Front-Panel Operation:
If the power supply is secured, you will see the above message for one second
by holding (
Calibrate) key for 5 seconds when you turn on the power
supply. To unsecure the power supply, press (
Secure) 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
(
Secure) key.
When you press (
Secure) 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 displays an
“INVALID” message for a second and returns to the code entering mode for
you to enter the correct code.
• Remote Interface Operation:
CAL:SEC:STAT {OFF|ON},<code> Secure or unsecure the power supply
To unsecure the power supply, send the above command with the same code
used to secure. For example,
‘‘
CAL:SEC:STAT OFF, HP003633
’’
(E3633A)or
‘‘
CAL:SEC:STAT OFF, HP003634
’’
(E3634A)
SECURED
0
00
000000 CODE
UNSECURED
Calibrate
Error
I/O
Config
Secure
I/O
Config
Secure
I/O
Config
Secure
*For Agilent E3633A Model **For Agilent E3634A Model