Chapter 3 Front-Panel Operation
Calibration Overview
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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)
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”**.
SECURED
000000 CODE
UNSECURED
*For HP E3633A Model **For HP E3634A Model
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