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6.4.8 Making an AC Current Measurement
To measure an AC current which is less than 400 mA, do the following:
1.
Press the A key and DCA appears at the top of the screen. The unit on the main reading screen is mA.
mA and 20A will display on the right bottom of screen, press F4 or F5 to switch the measurement
between mA and 20A. 400mA is acquiescently.
2.
Press the AUTO SET key once and ACA is visible at the top of the screen..
3.
Insert the black lead into the COM banana jack input and the red lead into the mA banana jack input.
4.
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.
Look at the display, you can see a screen that looks like the following figure 26.
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 26: AC Current Measurement for 400 mA
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