2.3 Connecting the Power Supply and Turning the Power Switch On and Off
2-8
IM DLM4038-03EN
Turning the Instrument Off
CAUTION
Abruptly turning off the main power switch or unplugging the power cord while data is being
saved or the internal printer is printing may corrupt the media on which data is being saved or
damage the built-in printer. Also, the data being saved is not guaranteed. Always turn the main
power switch off after data has been saved.
French
ATTENTION
Mettre brutalement l’instrument hors tension ou débrancher le cordon d’alimentation pendant
l’enregistrement de données ou le fonctionnement de l’imprimante interne peut corrompre le
support d’enregistrement des données ou endommager l’imprimante intégrée. Les données
en cours d’enregistrement pourront également être perdues. Toujours mettre l’instrument hors
tension après que les données ont été enregistrées.
Turning Off the Power Switch
1.
Press the power switch on the front panel.
Turning Off the Main Power Switch
2.
Check that the front-panel power switch changes from green to red-orange, and then flip the
power switch on the right side panel to the OFF (
○
) position.
Operations Performed When the Power Is Turned Off
The settings immediately before the power switch is turned off are stored. Therefore, the next time the
power is turned on, waveforms are measured using those settings.
Note
If you turn off the main power switch on the right side panel while the power switch on the front panel is
turned on, the setup data immediately before the power switch is turned off will not be stored properly. The
next time you turn on the main power switch, the front-panel power switch automatically turns on, and the
instrument starts using the previous settings that were stored properly. When this occurs, a message appears
on the screen, but it does not mean that the instrument is broken. When turning the power off, turn off the
power switch on the front panel, and then turn off the main power switch on the right side panel.
To Make Accurate Measurements
• Allow the instrument to warm up for at least 30 minutes after turning on the power switch.
• After the instrument has warmed up, perform calibration.
• If auto calibration is set to ON, the DLM4000 will automatically perform calibration when you
perform one of the operations below if the following times have passed since the power was turned
on.
3 minutes, 10 minutes, 30 minutes, 1 hour, and each following hour
• When you change time/div during waveform acquisition (when the RUN/STOP key is illuminated)
• When you start waveform acquisition after stopping waveform acquisition (so that the RUN/
STOP key is not illuminated)
If calibration is executed while signals are being applied to the DLM4000, we recommend that you stop
signal application and recalibrate the DLM4000.
