Product specifications

6 FUNCTIONALITIES
50
6.3.4 Lamp history
Press the [LAMP HISTORY] button on the MENU/MAINTENANCE screen. The LAMP
HISTORY screen will be displayed.
The lamp voltage is recorded every 4 days and displayed on this screen.
Fig. 62 LAMP HISTORY screen
The vertical axis shows voltage and the horizontal axis shows time in days.
Two vertical lines, solid and dotted, can be controlled with their respective buttons.
The following buttons allow you to perform the following operations.
The line position (elapsed time in days) and the lamp voltage at that time are displayed under
the respective control buttons.
The difference between the two lines is displayed at the central part.
Note
The area below the horizontal line of the graph shows the alarm range. Once the lamp voltage falls
within this area, an alarm will occur. When being above the horizontal line, the lamp voltage is normal .
The keys allow you to perform the following operations.
Solid line
Dotted line
Solid line control buttons Dotted line control buttons
Difference
[W]: Moves the line leftward.
[X]: Moves the line rightward.
[CLOSE]: Returns to the MENU/MAINTENANCE screen.
[DELETE]: Displays the message confirming data deletion (Fig. 63 on page 51).
This button is hidden when the keys are locked.