Digital Multimeter Operation 2
Making Measurements
U3606A User’s and Service Guide 31
Measuring AC (rms) current
1 Press again (until the AC annunciator is shown on the display) to
make AC current measurements.
2 Connect the red and black test leads to input terminals I (red) and
LO (black) respectively as shown in Figure 2- 2.
3 Probe the test points and read the display.
Table 2 - 4 AC current measurement summary
Item Description
Available ranges 10.0000 mA, 100.000 mA, 1.00000 A, 3.0000 A
Measurement method AC coupled true rms
Burden voltage and shunt
resistance
• < 0.2 V/10 Ω for 10 mA range
• < 0.2 V/1 Ω for 100 mA range
• < 0.3 V/0.1 Ω for 1 A range
• < 0.7 V/0.01 Ω for 3 A range
Input protection Protected with a 3.15 A/500 V, FF fuse
Crest factor
For < 5:1 errors included. Limited by the peak input and 100 kHz
bandwidth. Maximum 3.0 at full scale.
Peak input 300% of range. Limited by maximum input.
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