MS400 EXTECH [Extech Instruments Corporation.], MS400 Datasheet - Page 34

• Manufacturer Part Number: MS400
• Description: Handheld Digital Storage Oscilloscope & Multimeter
• Manufacturer: EXTECH [Extech Instruments Corporation.]

Setting the Trigger
The trigger defines the start time for data acquisition and waveform display. When
beginning to acquire data, the oscilloscope collects sufficient data to draw the waveform at
the left side of the triggering point. After a trigger is detected, the oscilloscope gathers
enough data to draw the waveform at the right side of the triggering point.
To perform a CH1+CH2 waveform calculation:
To configure a trigger mode setting:
1. Press the MENU key and the function menu will appear at the right of the screen.
2. Press the MENU UP or MENU DOWN key to select TRIG MODE and five selectable
3. Use the F1 through F5 keys to make selections.
4. Press the OSC OPTION key and the following will be shown on the screen:
5. Press the OSC UP or OSC DOWN key to adjust the trigger level positions.
1. Press the MENU key and the function menu will appear at the right of the screen.
2. Press the MENU UP or MENU DOWN key to select WAVE MATH. Five options are
3. Press the F3 CH1+CH2 key and the obtained waveform M appears on the screen.
4. Press the OSC OPTION key and the following will be displayed on the screen:
5. Press the OSC UP or OSC DOWN key to adjust the amplitude of the waveform M.
6. Press the OSC OPTION key twice and the following will appear:
7. Press the OSC UP or OSC DOWN key to adjust the position of waveform M.
items will be displayed at the bottom of the screen.
displayed at the bottom of the screen.
Press the F3 key again to close the waveform M.
LEFT/RIGHT – Time
UP/DOWN – CHM Zero
LEFT/RIGHT – Time
UP/DOWN – Trig
LEFT/RIGHT – Time Base
UP/DOWN – CH1 Volts/Div
Figure 37: Waveform Mathematics
34
MS400 Version 2.0 – December 2007