76 2801/2802 Power Analyzer User Guide
key to select from the choices LCD TEST; LED TEST; KEYPAD TEST;
PERFORMANCE.
The LCD TEST scans the pixels. This will continue until any one of the keys
is pressed, with exception of the LINE SWITCH key which is disabled while
in this menu.
The LED TEST will turn on and off the OVERLOAD LEDs and the LINE
SWITCH LEDs in a round robin format. This will continue until any one of
the keys is pressed, with exception of the LINE SWITCH key which is
disabled while in this menu.
The KEYPAD TEST is used to verify that the front panel keys are
operational. When a key is pressed, the key name will appear on the screen.
When the MENU key is pressed the name will flash on the screen and then
the screen will exit to the DIAGNOSTIC MENU.
Figure 35. Diagnostic Menu Screen
The PERFORMANCE screen provides the user with the present internal
instrument temperature and the temperature for which the EXT
CALIBRATION and DC ZERO were performed. If the internal temperature
has changed by more then +/- 5 Deg C, then it is recommended that the DC
ZERO procedure be followed.
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