Chapter 3 Front-Panel Operation
Calibration Overview
68
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 “HP003632”.
Be sure to read the security code rules on page 66 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 MOD E” mes sage is displ ayed in the ca libra tion mo de, en ter the secur ity
code usi ng t he knob an d resolution selection keys, and then press the
key.
Notice that you should omit the “H P” and enter the remaining numbers as
shown below.
When you press 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, HP003632"
UNSECURED000000 CODESECURED
Calibrate
Secure
Secure
Secure