Battery Operating Time; Interference With Electronic Equipment; Television Interference - PowerDrive PD120 Owner's Manual

BATTERY OPERATING TIME
Operating time will vary depending on the charge level of the battery, its
capacity and the power level drawn by the particular AC load. With a typical
vehicle battery, an operating time of 4 to 5 hours or more can be expected.
When using a vehicle battery as a power source, it is strongly recommended
to start the vehicle every 1-2 hours to recharge the battery before its capacity
drops too low. The inverter can operate while the engine is running, but the
normal voltage drop that occurs during starting of the engine may trigger the
inverter's low voltage shutdown feature.
Because the power inverter draws less than 0.5A when turned on and with no
AC product connected, it has minimal impact on battery operating times.
INTERFERENCE WITH ELECTRONIC EQUIPMENT
Generally, most AC products operate with the inverter just as they would be
with household 11 OV/AC power. Below is the information concerning two
possible exceptions.
BUZZING AND IN AUDIO SYSTEMS AND RADIOS
Some stereo systems and AM/FM radios have inadequate internal power
supply filtering and "buzz" slightly when powered by the inverter. Generally,
the only solution is an audio product with a higher quality filter.
TELEVISION INTERFERENCE
The inverter is shielded to minimize its interference with TV signals. However,
with weak TV signals interference may be visible in the form of lines scrolling
across the screen.
The following should minimize or eliminate the problem:
• Increase the distance between the inverter and the TV, antenna and cables.
• Adjust the orientation of the inverter, TV, antenna and cables.
• Maximize TV signal strength by using a better antenna and use shielded
antenna cable where possible.