Measuring Ac Current - Fluke 187 User Manual

Model 187 & 189
Users Manual
The following are some tips for measuring current:
If the display shows
meter is set up correctly, test the meter's fuses as
described under "Testing the Fuses" in Chapter 6.
A current meter drops a small voltage across itself,
which might affect circuit operation. You can calculate
this burden voltage using the values listed in Chapter
7 under Burden Voltage (A, mA, µA).
3-18
and you are sure the

Measuring AC Current

To measure ac current, set up the meter as shown in
Figure 3-11.
The blue pushbutton cannot be used with ac current
measurement. All other pushbutton features can be used.