Wireless Transmitters FAQ
1. The following question is a question which we are asked most but the most difficult to answer(e.g.200mW)
Question: You indicated in the data that It can be transmitted in the open barrier far far away, however, in the hazard area how far it can be passed? How many floors can it pass? And how many walls can it pass through? How far can a 2000mW transmitter pass in the city? Why indicated can transmit 1000 meters but can only pass 200 meters?
environments of the transmission distance are not the same. Because the
obstacles are differen from tall to short, the walls have thick and thin, and
the forest has close and thin. Such as the 2000mW transmitter in the wild, open
barrier-free environment can pass 1
If the environment of blocking objects can choose to add an outdoor antenna. Try to frame both ends of the outdoor antenna to the highest point of the antenna and the antenna between the open and see each other, when the transmission distance is indicated in the data transmission distance.
2. Question: How to test the new buy wireless video transmission systems?
Answer: A. First camera (camera) power, connect the monitor (TV), confirm that your camcorder (camera) and monitor (TV) to work properly
B. Connect the transmitter, camera and power supply, connect a good receiver, monitor, and power, re-adjust button on the receiver to select the channel to make sure that exactly the same channel on the receiver with the channel on the transmitter; so that you can normally use the device.
3. During the test, why do you it say can pass a few kilometers, but tens of meters it can not pass?
Answer: Some people in the test, because of the power limit, it can only be used in a room on one side of the transformer provides power for the transmitter, providing power to the receiver in another room adjacent to the near, and this just gave to transmit and receive the biggest obstacle. Because the buildings of reinforced concrete structures is the biggest obstacle to the radio waves. Test, as much as possible between the transmitter and the receiver fully accessible by extending cable or external antenna to transmit and receive at both ends of each other can be seen.
4. Why when using wireless video transmission systems, the monitor screen scrolling black bars?
Answer: This is because of not enough current transformer connecting the transmitter or receiver. Some buyers in order to facilitate the standard power supply but also to the camera power supply, caused by current. If replace the higer power transformers , it can.
5. This set of wireless video transmission systems of yours or definate of how or why the transmission of the image is blurred?
Answer: This system is not related to the sharpness of the image, the camera and the receiver share the same clarity. If the received image is blurred, please check the cameras, whether or not to look at the camera focal length.
6. Whether it can be inerfered by the same products near by?
Answer: Our wireless video transceiver system has four channels, you can choose depending on the circumstances, in general, it will not stagger the same frequency. If there is a same signal, it will interfere with each other.
7. When using your wireless video transceiver system, will other people receive my signal?
Answer: The area around the use of wireless video transceiver system, using the same frequency received signal it is possible to receive your transmit signal.
8. What’s the maximum use number of your device in the same area? Or can allow a maximum number of points to use?
Answer: Our wireless video transceiver
system data presented in several different channels, you can use several sets
of the same area. For example,
9. How many types of the? Respectively, what role? External antenna on the transmitter or receiver?
Answer: There are two kinds of types of antenna wireless video transceiver systems, directional antenna and omni-directional antenna. The name suggests, the directional antenna is the signal to a particular direction of transmission, and omni-directional antenna is the signal transmitted to the surrounding. Under normal circumstances, if it is point-to-point transmission using a directional antenna; multipoint transmission, the use of omni-directional antenna. External antenna on the transmitter, the transmitter and receiver are fitted with an external antenna, the effect will be even better.
10. What types of machines need to use an external antenna? How big the role of an external antenna? Why is coupled with an external antenna, the transmission distance rather than use the original antenna closer to or even worse?
Answer: Generally, the transmit power greater than the 1000mW the wireless video transmitter can be equipped with an external antenna; Use an external antenna in an open barrier-free environment, the transmitter transmitting distance increased by 30% - 70%; If you connect an external antenna, the impact is not better than the original one, then the only possibility is the external antenna is not connected well. These connections are the connections between the joints of the antenna, the connection between the antenna and transmitter, especially with the transmitter connected to the antenna connector. The hole in the middle of the Okanagan wire core must be the accurate insertion of the transmitter antenna connector, otherwise, the external antenna will not work.
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