Specifications

System-Related Operations
Front Panel Display
The power supply has a front panel screen saver that significantly increases the life of the LCD display by turning it off
during periods of inactivity. The delay can be set from 30 to 999 minutes in 1 minute increments. As shipped from the
factory, the screen saver comes on one hour after activity on the front panel or interface has ceased.
When the screen saver is active, the front panel display turns off, and the LED next to the Line switch changes from
green to amber. To restore the front panel display, simply press one of the front panel keys. The first action of the key
turns the display on. Subsequently, the key will revert to its normal function.
If the Wake on I/O function is selected, the display is restored whenever there is activity on the remote interface. This
also resets the timer on the screen saver. As shipped, Wake on I/O is active.
Front Panel Menu SCPI Command
Select System\Preferences\Display
Enable or disable the screen saver by check-
ing or unchecking the Screen Saver check-
box. Then press Select.
Enter a value in minutes in the Saver Delay
field to specify the time when the screen
saver will activate.
Check Wake on I/O to activate the display
with I/O bus activity.
Not available
Password Protection
You can password-protect all functions located in the Admin menu. These include: instrument calibration, interface
access, non-volatile memory reset, firmware update, password updates.
As shipped from the factory, the Admin menu password is 0 (zero). This means that you do not have to enter a pass-
word to access the Admin menu. Simply select System\Admin\Login and press Enter. To password-protect the
Admin menu:
Front Panel Menu SCPI Command
Select System\Admin\Password
The password must be numeric, and up to
15 digits long.
Press Select
Log out of the Admin menu to activate the
password. You can now only enter the
Admin menu by providing the right pass-
word. Enter the password in the Password
field.
Enter calibration mode using the original
password
CAL:STAT ON, <password>
To change the password:
CAL:PASS <password>
To exit calibration mode and activate the
password:
CAL:STAT OFF
If the password is lost, access can be restored by setting an internal switch to reset the password to 0. If the message
“Locked out by internal switch setting” or “Calibration is inhibited by switch setting” appears, the internal switch is set
to prevent the password from being changed. Refer to Calibration Switches for more information.
Agilent N8900 Series Operating and Service Guide 69