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Appendix 6 Zero Adjustment
A9
A
ppend
ix
To perform zero adjustment using measurement leads
When you actually perform zero adjustment using measurement leads, you may unexpect-
edly make the connection shown in Table 1 (b). Therefore, when performing zero adjust-
ment, you need to pay sufficient attention to the connection state of each terminal.
Here, L2101 Clip Type Lead is used as an example for the connection explanation. Table 2
shows the connection state of the tip of the lead and equivalent circuit in the respective cor-
rect and wrong connections. Table 1 (a) indicates the correct connection method, resulting
in 0 V between SENSE A and SENSE B. However, Table 1 (b) is the wrong connection
method, so that 0 V is not obtained between SENSE A and SENSE B.
Table 2: Clip type lead connection methods used during zero adjustment
Connection
method
Correct Wrong
Tip of lead
Equivalent circuit
Deformed
equivalent circuit
As connection
method for zero
adjustment
Correct Wrong
Red Black
Red Black