13
Symptom
Cause/solution
Reference
pages
Audio input contains
noise.
• Check the following.
• Grounding of the camera, a switching hub or periph-
eral devices are not done.
• The camera is used near an electrical power line.
• The camera is used near a device which produces
strong magnetic field or radio waves (such as near a
TV/radio antenna, a motor of an air conditioning sys-
tem, a transformer, etc.)
When audio input still contains noise even after checking
the above possibilities, use a powered microphone or
connect audio output with low output impedance.
Installation
Guide
