4
Section
Noise Prevention
xiii
4
Noise Prevention
Provide the following countermeasures when using the product in an environ-
ment where the product is exposed to noise.
•
Countermeasures for protecting the product against high-frequency noise or
abnormal voltages.
Line filter
Frequency/Rate
Meter
Power
input
Power
input
Signal
input
+
+
+
–
Frequency/Rate
Meter
•
Countermeasures for protecting the product against inductive noise produced
from the input line.
2-conductor shield wire
+
Frequency/Rate
Meter
–