Μa Ac/Dc Current Measurements Using Test Leads - Extech Instruments EX650 User Manual

µA AC/DC Current Measurements using Test Leads
WARNING: Do not handle the test leads above the finger/hand guard barrier.
CAUTION: Observe CAT II 1000V and CAT III 600V with respect to Earth Ground.
1. Insert the black test lead into the COM terminal and the red test lead into the A terminal.
2. Turn the meter's function switch to the
display indicating that micro‐amperes are being measured.
3. The meter display will show AC or DC (use the M button to select AC or DC).
4. Current measurements must be taken in series with the circuit under test. See accompanying
diagram.
5. Touch the black test lead to the negative side of the circuit and the red test lead to the
positive side of the circuit.
6. Read the current measurement in the display represented by the numerical digits and the bar
graph (EX655). The display will indicate the proper decimal point and value. In DC, If the
polarity is reversed, the display will show (‐) minus before the value.
AC DC
Fig 4‐4 µA AC/DC CURRENT MEASUREMENTS
position. The µA unit symbol will appear on the
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