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Something that wireless bridges must know
Wireless bridges are used outdoors, and there are many uncertainties in outdoor environments. Before selecting, installing, and deploying wireless bridges, some knowledge must be made clear. The following is a summary of Feng Runda, a professional wireless bridge equipment provider. Some points can help everyone to avoid detours later.
1. The influence of bad weather on wireless bridges
The wind blows down and has an effect on the signal of the wireless bridge, which in turn affects the transmission effect. The selected bridge equipment must have good waterproof, dustproof, lightning protection, sun protection, antifreeze and other functions in order to adapt well to complex outdoor environments. Also used outdoors, must be installed and fixed to prevent wind blowing down.
2, wireless bridge direction calibration
Wireless bridges are used at least in pairs, one for each, and one for each. The direction and angle of each other must be set, otherwise no signal can be searched. Before commissioning a wireless bridge, the wireless bridges at both ends of the transmission must be aligned.
Calibration method: Within a few hundred meters, the distance that can be seen with the naked eye can be directly aligned with the human hand. For distances that cannot be seen by the naked eye, you can use the positioning system to query the latitude and longitude where the devices at both ends are located, and then adjust the latitude and longitude between the two ends.
3, transmission mode
Wireless bridges have 3 common transmission modes. Different modes have their own characteristics and adaptability:
Point-to-point transmission: A transmitter to a receiver, the signal loss, transmission distance.
Point-to-multipoint transmission: a receiver to multiple transmitters, the signal has a certain loss, the transmission distance is lower than the point-to-point transmission.
Relay transmission: between the receiving end and the transmitting end, add one or two wireless bridges, which are often used in the case of a barrier (building) between the receiving end and the transmitting end. The loss is very large, and the number of relays is not required. More than 2 times.
4, how to do with obstructions
In fact, in the application of wireless bridges, there are few ideal situations (no blocking). Many of them have various obstacles. What should I do at this time? You can use relay mode, avoid obstructions, remove obstructions (trees, etc.).
5, single-mode and dual-mode wireless bridge
Single-mode and multi-mode refer to the number of design modules in the bridge. For example, the device uses 2.4GHz and 5GHz dual-frequency multi-module design, a single wireless RF module achieves 320Mbps transmission rate, bandwidth up to 160Mbps; a number of wireless RF module plus Up to 640Mbps transmission rate, bandwidth up to 320Mbps, can solve the application of long-distance transmission bandwidth, multiple jumps to the problem of insufficient bandwidth.
6, installation
The height of the installation should be appropriate. There should be no obstructions between the receiving end and the transmitting end. The transmitting antenna must be higher than the height of the obstacle. After the installation, debugging is required. The purpose of adjusting the signal strength can be achieved by adjusting the direction of the antenna on both sides and the pitch angle.
7, lightning protection requirements
Since it is used outdoors, lightning protection measures are indispensable, especially when used in the wild. If there are no tall buildings or lightning rod protection nearby, lightning rods need to be used. In addition, the wireless bridge must be grounded, otherwise it will lead to abnormal operation of the equipment, damage and other issues, can be combined with the PoE adapter with a grounding cable and the PoE adapter for grounding.