20
Clamp-on Meter Models 501 and 503
4.8 Frequency Measurement Using
Current Input
NOTE:
Remove the test leads before measuring current
• Turn the rotary range switch to the
range.
• Press the lever to open the jaws.
• Clamp the jaws around the conductor to be mea
-
sured.
WARNING:
Do not use both voltage and cur-
rent inputs at the same time when measuring
frequency. This may be dangerous. Errone-
ous readings will occur if both inputs are used
at the same time.
Summary of Contents for 501N
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