Interference Problems - NDS Smart-in SM Series User Manual

7. INTERFERENCE PROBLEMS:

Some inexpensive stereo systems may emit a buzzing noise from their loudspeakers
when operated from the inverter. This occurs because the power supply in the audio
system does not adequately filter the modified sine wave produced by the inverter.
The only solution is to use a sound system that has a high quality power supply, or
use a pure sine wave inverter.
When the inverter is operating, it can interfere with television reception on some
channels. If interference occurs, try the following:
– Make sure that the chassis ground screw of the inverter is connected to the
ground system fo your vehicle.
– Make sure that the television antenna provides an adequate signal and the
antenna cable is in good conditions.
– Keep the cables between the battery and the inverter as short as possible, and
twist them together to reduce the radiated emissions.
– Move the television as far away from the inverter as possible.
– Do not operate high power loads with the inverter which the television is on.
10