Fluke 187 사용자 설명서
Model 187 & 189
Users Manual
Users Manual
3-18
The following are some tips for measuring current:
•
If the display shows
LEAd5
and you are sure the
meter is set up correctly, test the meter’s fuses as
described under "Testing the Fuses" in Chapter 6.
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).
which might affect circuit operation. You can calculate
this burden voltage using the values listed in Chapter
7 under Burden Voltage (A, mA, µA).
Measuring AC Current
To measure ac current, set up the meter as shown in
Figure 3-11.
Figure 3-11.
The blue pushbutton cannot be used with ac current
measurement. All other pushbutton features can be used.
measurement. All other pushbutton features can be used.