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OWON HDS1021M Handheld DSO & DMM 7-Using the Multimeter
To measure an AC current which is larger than 400 mA, do the following:
1. Press the A key once and DCA is visible on the top of the screen.
2. Press F5 to select 20A measure, the unit of main reading window is A.
3. Press the AUTO SET key once and ACA is visible on the top of the screen.
4. Plug current extended module in current measure jack, then plug the probe in the module.
5. Connect the red and black leads to the measured point and the AC current value of the
measured point will be displayed on the screen.
6. Press F4 return to 400mA measure.
Look at the display, you can see a screen that looks like the following figure 27.
figure 27: AC Current Measurement for 20A
7.5 Freezing the Readings
You can freeze the displayed readings at any time.
1. Press the RUN /STOP key to freeze the screen and STOP will be displayed at the top right
of the screen.
2. Again, press the RUN /STOP key, you can resume your measurement.
Look at the display, you can see a screen that looks like the following figure 28.
31
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