User manual

16
10. Wireless Cameras and Interference
If the image coming from your wireless camera is distorted, you’ve
probably discovered the bane of analog wireless technologies:
interference. To help you get as much out of your wireless DVR
system as it’s capable of delivering, here’s a brief rundown of what
interference is, and how you can try to minimise it.
The Wireless Camera transmits its images on a radio frequency of
2.4GHz. This is way over the range of the average radio, but there are
some (in fact, many) devices out there that transmit data on this
frequency.
Things such as wireless computer networks, cordless phones, baby
monitors, car alarms and Bluetooth enabled devices communicate at
and around a frequency of 2.4GHz. Other devices, such as
microwaves, create radio “noise” at this frequency as well.
Placing your cameras or wireless DVR near these devices, or having
any of these devices in between your cameras and receiver, can
cause interference and affect picture quality. This happens because
the signals are so similar, that they get mixed up with one another, and
your receiver will have trouble figuring out which is which.
If you want to visualize how interference occurs, imagine playing two
games of football simultaneously on only one field. The players will
continually collide with one another, and occasionally forget which ball
is which! Naturally, when two games are played at the same time on
the same field, both games suffer, take longer to play and neither team
will score as often as they should.
This is exactly what happens when two wireless devices are used too
close together!
To discover what might be causing your interference, we suggest
disconnecting all other wireless devices one at a time to find out which
one is causing the problem, and adjusting your setup accordingly.
Bear in mind that a wireless device from nearby homes or businesses