Making Measurements 2
Measuring AC or DC Current
U1271A/U1272A User’s Guide 95
Figure 2-31 Measuring DC current
Placing the probes across (in parallel with) a powered circuit when a
lead is plugged into a current terminal can damage the circuit you are
testing and blow the multimeter's fuse. This happens because the
resistance through the multimeter's current terminals are very low,
resulting in a short circuit.