A: 2.4GHz cordless phones, and 2.4GHz wireless computer networks (Wi-Fi Router) are the top two products on the market today that seem to cause interference problems with wireless camera systems. Strong static interference, large horizontal lines rolling upward, an increased noise level, and an unsteady picture are all possible problems the can produce. Please refer to the other equipment manufacturers for exact frequency specifications. If the wireless camera is channel selectable (not all models), please try to change channels until an acceptable picture is displayed. When using multiple wireless camera systemwireless cameras, make certain they are
using different channel numbers and set them apart at least 2 meters (6.5 ft) from each other.Q: What are the frequencies that FCC allows to use in USA and Canada without license?
A: 900MHz, 2.4GHz, and 5.8GHz. Mini-Airwatch and OutdoorWatch wireless cameras utilize the 2.4GHz frequency.
Q: Can I connect wireless system onto a DVR and record?
A: Yes. There are 2 options.
1. One channel recording: connect one wireless receiver to one of the video inputs of the DVR. If there are four wireless cameras connected to the receiver (loop mode must be on) the DVR will record the four cameras in a one by one sequence. It is then possible to review the recorded files in sequence or expand the picture to full screen using the DVR buttons.
2. Multiple channel recording: example, connect four wireless receivers (each receiver having a different frequency camera) into the DVR’s four video inputs. All four cameras can then be recorded simultaneously and it is possible to review the files as a single camera display or as a quad display.
Q: What's the difference between a wired camera and a wireless camera?
A: A wired camera needs a cable that goes from the camera to a TV, VCR or DVR. The video signal is passed from the camera, through the cable, and to your TV, VCR or DVR which allows you to see the picture. All wired cameras must use RCA/BNC cable to connect the camera to the TV, VCR or DVR. For example, a clock radio hidden camera will plug into the wall just like a normal clock radio. The camera transmitter hidden inside the radio is powered by the clock radio's power supply, which requires plugging the AC cord. Another example, a smoke detector hidden camera will have to have an external power source, so the AC cord needs to be transferred through a wall or ceiling in order to power the smoke detector camera.
A wireless camera does not need an RCA/BNC cable connected from the camera to the TV, VCR or DVR. That is the main advantage, without spending for any extra expensive wiring. The video signal is transmitted through the air to the receiver directly. However, wireless cameras still require power. So, either a power adapter or batteries must be used.
Q: What exactly does wireless mean?
A: Wireless means there is no video cable running from the wireless camera to your TV, VCR, or DVR. For outside applications, wireless means no wires stretched across your home between the wireless hidden camera and the receiver. All wireless cameras still require a power source regardless of whether it is an indoor camera or an outdoor wireless camera. A wireless receiver must always accompany a wireless camera. Also, a receiver must connect to your TV, VCR or DVR with A/V cables and requires a power source too. Thus, a wireless camera only eliminates any wires stretched across a room or outdoor location to a house.
Q: Can I use a 1.2GHz wireless camera, instead of a 2.4GHz camera, to avoid interference with my home Wi-Fi network or 2.4GHz cordless phone?
A: Yes, you can use a 1.2GHz wireless camera in other countries, but not in the USA and Canada, as it is restricted by the FCC.
Q: Does a wireless camera still need a power adapter?
A: Yes it does. A camera wireless camera would not be operable without some source of power to it. This source of power can come from either the AC outlet (using the adapter) or from a 9 volt battery.
Q: Is there anyway to extend the distance of video transmission for the wireless camera?
A: No, due to FCC limitations on transmission power. It is possible to use a high powered booster (i.e. 1 watt, 5 watt, etc..) to extend the viewing range of the wireless camera system. Using a power booster for these purposes is illegal in the U.S.A. and restricted by the FCC.
From: http://www.the-wireless-security-cameras.blogspot.com/
No comments:
Post a Comment