3-20
IM DLM3054-03EN
3.8 Calibrating the Instrument
Procedure
1.
Press
UTIL
and then the Calibration soft key. The following menu items appear.
Executes calibration
Turns auto calibration on and off
Explanation
Calibration
You can calibrate the vertical axis ground level and gain. Execute calibration when you want to make
accurate measurements.
Note
Calibration is automatically performed for the settings listed above when the power switch is turned 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 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)
Note
If calibration is executed while signals are being applied to the instrument, we recommend that you stop
signal application and recalibrate the instrument.
