User manual

Operating Basics
4
A622 Instructions
Handles
Jaws
From
source
To load
Figure 2: Connecting the A622 current probe
5. Adjust the probe and channel as necessary to get a clear view of
the signal. Set the cha nnel to DC volts to see both the AC and DC
currents; set the cha nnel to AC to see the AC current only.
The current dra wn by some devices looks much different than that of
others. While the R MS current may be low, the momenta ry pea ks
may be quite high. Figure 3 shows t he difference between the li ne
current dra wn by a resistive loa d and a motor controll er.