Chapter 3 Front-Panel Operation
Calibration Overview
57
3
To Unsecure for Calibration
You can unsecure the power supply for
calibration either from the fro nt panel or over the remote interface.
Th e pow er supp ly is secured wh en shi pped fro m the f acto ry, an d th e securi ty
code is se t to “HP00 3633”* or “HP0 03634” **
• 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 po wer
supply. To unsecure the power suppl y, press (
Secure
) key after the
“CAL MODE” message is displayed in the calibra tion mode, enter the security
code using the knob and resolution selection keys, and then press the
(
Secure
) key.
W hen 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 rem ote interface reset.
To exit the calibration mode, turn
the power off and on.
Notice that if the secu rity is incor re ct, the power suppl y dis plays 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
000000 CODE
UNSECURED
Calibrate
Error
I/O
Config
Secure
I/O
Config
Secure
I/O
Config
Secure
*For HP E3633A Model **For HP E3634A Model
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