Model DMM7510 7½ Digit Graphical Sampling Multimeter Reference Manual
Appendix 0: Maintenance
DMM7510-901-01 Rev. B / May 2015
3
Lithium battery
The Model DMM7510 contains a CR2032 cell (LiMnO2) battery. Perchlorate material may require
special handling. See
http://www.dtsc.ca.gov/hazardouswaste/perchlorate
(
http://www.dtsc.ca.gov/hazardouswaste/perchlorate
).
This battery is not user-replaceable.
Front-panel display
Do not use sharp metal objects, such as tweezers or screwdrivers, or pointed objects, such as pens
or pencils, to touch the touchscreen. It is strongly recommended that you use only fingers to operate
the instrument. Use of clean-room gloves to operate the touchscreen is supported.
Cleaning the front-panel display
If you need to clean the front-panel LCD touchscreen display, use a soft dry cloth.
Abnormal display operation
If the display area is pushed hard during operation, you may see abnormal display operation. To
restore normal operation, turn the instrument off and then back on.
Removing ghost images or contrast irregularities
If the display has been operating for a long time with the same display patterns, the display patterns
may remain on the screen as ghost images and a slight contrast irregularity may appear. Note that if
this occurs, it does not adversely affect the performance reliability of the display.
To regain normal operation, stop using the front-panel display for some time. You can turn off the
front-panel display while continuing operation using remote commands and the virtual front panel.
To turn off the front-panel display using a SCPI command:
Send the command:
DISPlay:LIGHt:STATe OFF
To turn off the front-panel display using a TSP command:
Send the command:
display.lightstate = display.STATE_LCD_OFF