22-3
IM DLM3054-01EN
Clear Trace (CLEAR TRACE)
Clears all the waveforms that are displayed on the screen.
If you change the display format or perform other similar operations, the instrument redisplays the channel
waveforms, computed waveforms, and loaded waveforms that were displayed before you executed the clear
trace operation.
If you execute a clear trace operation during waveform acquisition, the instrument restarts waveform acquisition
(from the first acquisition). All history waveforms that have been stored up to that point are cleared. Snapshot
and clear trace features are disabled:
Snapshot and clear trace features are disabled:
• When the instrument is printing, when it is executing auto setup, or when it is accessing a storage device.
• When GO/NO-GO determination is in progress, when action-on-trigger is in progress, or when searching is in
progress.
Calibration (Calibration)
Executing Calibration (Cal Exec)
You can calibrate the vertical axis ground level and gain. Execute calibration when you want to make accurate
measurements.
Calibration is automatically performed for the settings listed above when the power switch is ON.
Notes about Calibration
• Allow the instrument to warm up for at least 30 minutes before you execute calibration. If you execute
calibration immediately after power-on, the calibrated values may drift due to temperature changes or other
environmental changes.
• Execute calibration in a stable temperature environment ranging from 5°C to 40°C (23 ± 5°C recommended).
• Do not apply signals when calibrating. Calibration may not be executed properly when input signals are being
applied to the instrument.
Auto Calibration (Auto Cal)
Auto calibration is executed when you perform one of the following operations and any of the time periods listed
below has elapsed since the power was turned on.
90 seconds, 3 minutes, 10 minutes, 30 minutes, 1 hour, and each following hour
• Change the time scale (time/div) during waveform acquisition (when the RUN/STOP key is illuminated)
• 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 instrument, we recommend that you stop
signal application and recalibrate the instrument.
22 Other Features