Prevention: Fortification, the interference will be rejected, measures:
1. The cable is galvanized iron pipe and the metal wire trough is taken;
2. Cable buried;
3. Double insulated double shielded anti-interference coaxial cable;
4. The camera is insulated from the shield and the shield is connected to the ground;
Avoid: change the original transmission band or transmission mode of the video to avoid interference within the video bandwidth. Measures:
1. Adopt fiber optic cable, microwave, radio frequency and other modulation methods;
2. Adopt digital transformation, processing and transmission methods;
Resistance: External electromagnetic interference has been “mixed into the video signal†through the transmission cable. The solution is “resistanceâ€. Measures:
1. Transmission transformer suppresses 50/100Hz low frequency interference;
2. "Chopping" technology;
3. Video pre-amplification improves the "signal/interference" ratio (signal-to-noise ratio) technique: in theory, it should be feasible in practice. However, there is still room for improvement in dealing with cable transmission distortion and additional amplification distortion.
4. “Weighted anti-jamming deviceâ€, without modulation and no conversion, maintains the original video baseband transmission mode, and has dual functions of suppressing interference and video recovery.
Complement: Anti-interference is one of the measures to improve image quality. It also takes into account the attenuation and distortion introduced by the compensation transmission cable and equipment, restores the original characteristics of the video signal, and ensures image quality. “weighted anti-jamming device†and “video recovery host†all have image quality control recovery function;
The main basics of anti-interference are different measures taken from different technologies. They master their principles, performance and usage methods, and they can be used in an invincible position.
Regarding the four basic essentials of anti-jamming, this formulation is only an individual opinion, not necessarily exact. The purpose is to understand and select the anti-jamming technical measures of the project, and strive to explore a clear and clear concept and essentials. No longer stunned, no longer at a loss, no longer misleading propaganda, and making more and higher-level model projects.
1. The cable is galvanized iron pipe and the metal wire trough is taken;
2. Cable buried;
3. Double insulated double shielded anti-interference coaxial cable;
4. The camera is insulated from the shield and the shield is connected to the ground;
Avoid: change the original transmission band or transmission mode of the video to avoid interference within the video bandwidth. Measures:
1. Adopt fiber optic cable, microwave, radio frequency and other modulation methods;
2. Adopt digital transformation, processing and transmission methods;
Resistance: External electromagnetic interference has been “mixed into the video signal†through the transmission cable. The solution is “resistanceâ€. Measures:
1. Transmission transformer suppresses 50/100Hz low frequency interference;
2. "Chopping" technology;
3. Video pre-amplification improves the "signal/interference" ratio (signal-to-noise ratio) technique: in theory, it should be feasible in practice. However, there is still room for improvement in dealing with cable transmission distortion and additional amplification distortion.
4. “Weighted anti-jamming deviceâ€, without modulation and no conversion, maintains the original video baseband transmission mode, and has dual functions of suppressing interference and video recovery.
Complement: Anti-interference is one of the measures to improve image quality. It also takes into account the attenuation and distortion introduced by the compensation transmission cable and equipment, restores the original characteristics of the video signal, and ensures image quality. “weighted anti-jamming device†and “video recovery host†all have image quality control recovery function;
The main basics of anti-interference are different measures taken from different technologies. They master their principles, performance and usage methods, and they can be used in an invincible position.
Regarding the four basic essentials of anti-jamming, this formulation is only an individual opinion, not necessarily exact. The purpose is to understand and select the anti-jamming technical measures of the project, and strive to explore a clear and clear concept and essentials. No longer stunned, no longer at a loss, no longer misleading propaganda, and making more and higher-level model projects.
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