Enabling The Scope Channels; Adjusting The Probe Scale; Inverting A Waveform; Math Function Menu Settings - Extech Instruments MS400 User Manual

Enabling the Scope Channels

Example for CH1:
Set the F2 Channel key to OFF and CH1 will be turned off.
Set the F2 Channel key to ON and CH1 will be displayed.

Adjusting the Probe Scale

If a 10:1 probe is connected, the scale of the input channel on the oscilloscope should be
set to 10X to avoid any error occurring in the displayed scale factor information and tested
data.
Press F3 Probe to set the correct probe attenuation.
Table: Probe attenuation factors and the corresponding menu setting.
Probe Attenuation

Inverting a Waveform

The displayed signal reverses 180 degrees relative to ground.
Press F4 Invert to invert the waveform. Press F4 Invert once again to cancel the
Inversion.

Math Function Menu Settings

The MATH function provides the results for addition, subtraction, multiplication or division
calculations on CH1 and CH2 channel waveforms. The result can be shown in grid or
cursor modes. The amplitude of the calculated waveform can be adjusted with CHM VOL,
which is displayed in the scale factor form. The amplitude ranges are 0.001X, 0.002X,
0.005X and 10X. The position of the calculated waveform can be adjusted up and down
with the CHM Zero key.
Math Function Table
Setting
CH1-CH2
CH2-CH1
CH1+CH2
CH1*CH2
CH1/CH2
Corresponding Menu Setting
Factor
1:1
10:1
100:1
1000:1
Description
CH1 waveform minus CH2 waveform.
CH1 waveform minus CH2 waveform
Add CH1 waveform to CH2 waveform
Multiply CH1 waveform and CH2 waveform
Divide CH1 waveform by CH2 waveform
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1X
10X
100X
1000X
MS400 Version 2.0 – December 2007