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Model 187 & 189 Users Manual 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. 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).
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.
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