Iwatsu SS-500 Series Instruction Manual page 61

IMPORTANT

After you measured a current that exceeds the
maximum rated current value of each current range,
re-execute the demagnetization and automatic zero-
adjustment.
The sensor heads have been magnetized, causing
incorrect current measurements.
See "Executing demagnetization and automatic zero-
adjustment" (p. 3 3).
IMPORTANT
When you measure high-frequency currents, the position of the
conductor under measurement in the sensor aperture may vary
the magnitude of load applied to the circuit under measurement,
adversely affecting the measurement accuracy.
See "Input impedance" (p. 8 0).
The following methods can minimize the adverse effect:
• Straighten the conductor under measurement as long as
possible.
• Clamp the sensor at the center of the straight portion of the
conductor as close as possible.
• Arrange the conductor at the center of the sensor aperture as
close as possible.
• Do not wind the conductor around a jaw.
Measuring Currents
2
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