Velleman-Kit EDU08, Руководство пользователя

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Calibration
C. CALIBRATION
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- 1.5V
Fine tuning of the input amplifier circuit requires a 1.5V battery. This calibration is optional. You must only do this, if you want a higher
precision of your measurements.
To adjust the “Offset” trimmer RV2:
- Connect the (+) of the test lead with the (-).
- Press the Menu button.
- Use the down arrow button to scroll down to “Measure”.
- Use the right arrow button to select “Vdc”.
- Press the Menu button to return to the oscilloscope display.
- Now adjust the Offset trimmer RV2 until the displayed value is 0.00V.
To adjust the “Gain” trimmer RV1:
- Measure the output of the battery with a multimeter and memorise it.
- Connect the battery to the oscilloscope’s input.
- Adjust trimmer “Gain” RV1 until the displayed DC value corresponds with the measured value.
- Remove the battery.
If you had to adjust the Gain trimmer RV1 you have to check the offset trimmer RV2 setting again. Repeat these
steps until both settings are OK.