4-20
IM 701240-01E
4.6
Performing Calibration
Calibrate the SL1400 when observing voltages.
Procedure
Executing Calibration
1.
Press
MENU
.
2.
Press the
Next 1/2
soft key.
3.
Press the
INITIALIZE/CAL
soft key.
4.
Press the
Cal Exec
soft key to execute calibration.
Performing Auto Calibration
5.
Press the
Auto Cal
soft key to select ON.
Turn ON/OFF auto calibration
Execute calibration
Explanation
Calibration
The following parameters are calibrated. Perform calibration when you want to measure
waveforms with high accuracy.
• Ground level offset
• A/D converter gain
Precautions to Be Taken When Performing Calibration
• Allow the instrument to warm up for at least 30 minutes after the power is turned ON
before performing calibration. If calibration is performed immediately after the power is
turned ON, the calibration may be inaccurate due to drift caused by fluctuation in the
temperature of the instrument.
• Perform calibration when the temperature of the instrument is stable and is between
5
°
C and 40
°
C (preferably at 23
°
C
±
5
°
C).
Note
The calibration described above is performed automatically when power is turned ON or when
the Cal Exec soft key is pressed.
Auto Calibration
If Auto Cal is set to ON, auto calibration is performed the first time the record time is
changed or the first time measurement is started after the time shown below passes.
After turning ON the power
• 3 minutes pass.
• 10 minutes pass.
• 30 minutes pass, and every 30 minutes from here on after.