Getting Started 1
Keysight U3401A User’s and Service Guide 37
Performing current measurements
Measuring AC (RMS) or DC Current in mA
– Measurement ranges: 500.00 μA, 5.00 mA, 50.00 mA, 500.00 mA
– Shunt resistance: 0.01 Ω to 100 Ω for 500 μA to 10 A ranges
– Input protection: Internal 25 A, 440 V FH fuse for one terminal
1 Press or .
2 Power off the measured circuit.
3 Connect the red and black test leads to mA input terminal as shown in
Figure 1-12.
4 Probe the test points in series with the circuit.
5 Power on the measured circuit and read the display.
Figure 1-12 ACI
RMS or DCI (mA) terminal connection and display
ACI or DCI
current source
+
–
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