21
Connecting a Load to the 4300C
The next step in using the ohmmeter is to connect to a load. Valhalla Scientific, Inc. offers several different
test leads that can be used with the Model 4300C and other Valhalla ohmmeter models (see Accessories
for a list of available test leads).
All ohmmeter test leads are composed of a pair of leads, both terminated in a multi-stacking dual banana
plug. It is important to notice the position of the ground marker on the plug. Marked side of each banana
jack is connected to the source terminals.
•
Connect the first lead between the SENSE HI and SOURCE HI terminals, with the ground marker
on the source side.
•
Connect the second lead between the SENSE LO and SOURCE LO terminals, with the ground
marker on the source side.
This configuration ensures that current source is carried in the largest conductor of the cable, and that
the sense input is shielded.
The opposite end of the lead may vary in style of termination. Here is a description of the three most
common terminations used.
The most common termination is alligator type clips (Figure 7).
If this is your choice of leads, simply connect one clip to one end of your load and the other clip to the
opposite side of the load.
Figure 7 – “K” 4 Wire Lead Set
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