Operations and Features 2
U3402A User’s and Service Guide 23
Performing Current Measurements
Measuring AC (RMS) or DC Current in mA
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 2- 3.
4 Probe the test points in series with the circuit
5 Power on the measured circuit and read the display.
Figure 2-3 ACI RMS or DCI (mA) terminal connection and display
• Four AC current or DC
current ranges:
• Slow reading rate: 12.0000 mA, 120.000 mA, 1.20000 A
• Medium reading rate: 40.000 mA, 120.00 mA, 1.2000 A
• Fast reading rate: 40.00 mA, 120.0 mA, 1.200 A
• Shunt resistance:
0.1
W
to 10
W
for 12 mA to 1.2 A range
• Input protection:
Front panel 1.25 A, 500 V FH fuse for one terminal
+
–
ACI or DCI
current source
U3402-90001.book Page 23 Friday, July 24, 2009 4:04 PM
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