Analysis of Common Problems of Twisted Pair Transmitter in Engineering Practice (1)
1, the image is sometimes lost: under normal circumstances is due to contact between the contact points in the line caused by poor contact
, Please check whether the terminal wiring is tightened, BNC head to use pure copper quality products, twisted pair of the junction required
Use a soldering iron for good sealing and waterproof sealing.
2. In order to make full use of the cable, the signal of the nearby monitoring point can be connected to the video line in the actual project.
Received the same position, and then through the converter access twisted pair transmission, but due to the loss of the signal will make the whole
The transmission distance of the body is shortened. One network cable can transmit 4 video signals at the same time, to prevent crosstalk between lines, leaving
The twisted pair underneath can be handled by referring to the next method.
3, the image has a twill interference:
(1) Try to use better DC power transformers to reduce the ripple factor of the power supply and reduce the interference caused by power supply problems;
(2) As far as possible, the video signal should not be processed by more equipment such as distributors, but it should be transmitted directly to the converter for transmission.
(3) If there are still unused pairs in the four twisted pairs of the same network cable, connect one or two empty twisted pair grounding cables to the front end. If there is no grounding cable, you can connect to the camera output. The terminals of the coaxial cable shielded network are connected as shown in Figure 2 of the installation guide.
4, during debugging, the receiver TA-305R is best directly behind the monitor to see the effect. If after
When the image processing equipment such as dividers are connected to the surface, due to their internal automatic gain circuit,
It will cause the phenomenon that the image does not change substantially during a certain stroke during the adjustment of the potentiometer.
Set the potentiometer to the middle of this basic, unchanging stroke.
5. If you can't adjust the effect, please contact your supplier for technical support. Inside the device and
No user-serviceable parts, do not open the shell and remove the label, otherwise it will not be free warranty.
Twisted Pair Price Twisted Pair Transmitter Price Twisted Pair Video Transmitter Factory Wholesale Twisted Pair Transmission Equipment Twisted Pair Transmission Distance Twisted Pair Making Twisted Pair Transmission Distance PTZ Decoder PTZ Controller PTZ Protocol Monitoring Cloud Billiard PTZ Camera Surveillance Camera Low Illuminance Infrared Camera Hemisphere Camera Video Card Grabber 7130 Video Capture Card 8800 Monitor Grabber Price Monitor Video Card Driver Image Grabber Card Monitor Card Wholesale Goods Surveillance Equipment Wholesaler Manufacturers Wholesale Quotes Monitoring Engineering Data Monitoring Engineering Contract project acceptance engineering case
6. That the shielded wire can enhance the anti-interference ability, select the shielded wire when wiring.
Due to the long-term use of coaxial lines for transmission by engineering firms, the use of coaxial lines as transmission media
The test is unconsciously applied to twisted pair transmission. It is considered that the use of shielded twisted pair is better than anti-jamming.
which performed. Of course, using shielded cables does enhance some anti-jamming capabilities, but it severely damages high-frequency signals.
The color of the transmitted effect is degraded, and the distance is far from even a color image, transmission quality and transmission distance.
Great discount. At the same time, the shielded twisted pair has a high price and also increases the engineering cost. Therefore, special attention must be paid when wiring.
Do not use shielded wire. Instead, unshielded twisted pair UTP should be used.
7, overestimate the product's waterproof, anti-jamming and lightning protection capabilities. In fact, electronic products are afraid of moisture and electricity.
Magnetic interference, more afraid of lightning. Twisted pair transmission equipment, due to the balanced transmission characteristics of twisted pair, common mode dry
Perturbations have a strong ability to suppress, but it is not a panacea. Lightning protection is one of the small functions.
The discharge circuit can only release the lightning on some thunderbolts with low voltage and low current.
Must be grounded to be useful! When tens of thousands of volts of lightning strike, the big tree can be cut into plates and small twisted pairs
Transmitters, housings can all be melted down. What else can a detonator do? So when engineering wiring, should
The area that bypasses rain, strong disturbances, and direct lightning strikes, if there are outdoor outdoor routes
Shape, should do as much as possible dedicated grounding to enhance lightning protection. At the same time improving the environment where the product is installed, letting
Prepare to work in a clean, dry environment, more stable and reliable work.
8, the wiring and installation process is too bad, leading to poor results. Unshielded twisted pair that we purchased in the market
The lines are all 305 meters in a box, but the points in the project are left, right, and close, so they are less than
In a short place at 305 meters, you need to break the cable's foreskin and pick out the line to pick up the camera. The long place will be
Need to connect two or more boxes of wire, it is best to use solder welding to secure the wiring, and wrap it well.
Do a good job of waterproofing, and pay attention to the color matching of the twisted pair to ensure that the transmission line is not a problem. In addition,
The converters used in the front end, especially the passive converters, are small in size, and many engineering companies connect them
Put in the shield, the problem is not great for a fixed camera, but if it is with pan/tilt, due to twisted
The line is relatively thin and relatively brittle. It is easy to break the twisted pair when the head is rotating. So at this time you should use the signal soft
Connect the soft video cable out and install the converter in a fixed place, keeping the twisted pair and the converter fixed.
1, the image is sometimes lost: under normal circumstances is due to contact between the contact points in the line caused by poor contact
, Please check whether the terminal wiring is tightened, BNC head to use pure copper quality products, twisted pair of the junction required
Use a soldering iron for good sealing and waterproof sealing.
2. In order to make full use of the cable, the signal of the nearby monitoring point can be connected to the video line in the actual project.
Received the same position, and then through the converter access twisted pair transmission, but due to the loss of the signal will make the whole
The transmission distance of the body is shortened. One network cable can transmit 4 video signals at the same time, to prevent crosstalk between lines, leaving
The twisted pair underneath can be handled by referring to the next method.
3, the image has a twill interference:
(1) Try to use better DC power transformers to reduce the ripple factor of the power supply and reduce the interference caused by power supply problems;
(2) As far as possible, the video signal should not be processed by more equipment such as distributors, but it should be transmitted directly to the converter for transmission.
(3) If there are still unused pairs in the four twisted pairs of the same network cable, connect one or two empty twisted pair grounding cables to the front end. If there is no grounding cable, you can connect to the camera output. The terminals of the coaxial cable shielded network are connected as shown in Figure 2 of the installation guide.
4, during debugging, the receiver TA-305R is best directly behind the monitor to see the effect. If after
When the image processing equipment such as dividers are connected to the surface, due to their internal automatic gain circuit,
It will cause the phenomenon that the image does not change substantially during a certain stroke during the adjustment of the potentiometer.
Set the potentiometer to the middle of this basic, unchanging stroke.
5. If you can't adjust the effect, please contact your supplier for technical support. Inside the device and
No user-serviceable parts, do not open the shell and remove the label, otherwise it will not be free warranty.
Twisted Pair Price Twisted Pair Transmitter Price Twisted Pair Video Transmitter Factory Wholesale Twisted Pair Transmission Equipment Twisted Pair Transmission Distance Twisted Pair Making Twisted Pair Transmission Distance PTZ Decoder PTZ Controller PTZ Protocol Monitoring Cloud Billiard PTZ Camera Surveillance Camera Low Illuminance Infrared Camera Hemisphere Camera Video Card Grabber 7130 Video Capture Card 8800 Monitor Grabber Price Monitor Video Card Driver Image Grabber Card Monitor Card Wholesale Goods Surveillance Equipment Wholesaler Manufacturers Wholesale Quotes Monitoring Engineering Data Monitoring Engineering Contract project acceptance engineering case
6. That the shielded wire can enhance the anti-interference ability, select the shielded wire when wiring.
Due to the long-term use of coaxial lines for transmission by engineering firms, the use of coaxial lines as transmission media
The test is unconsciously applied to twisted pair transmission. It is considered that the use of shielded twisted pair is better than anti-jamming.
which performed. Of course, using shielded cables does enhance some anti-jamming capabilities, but it severely damages high-frequency signals.
The color of the transmitted effect is degraded, and the distance is far from even a color image, transmission quality and transmission distance.
Great discount. At the same time, the shielded twisted pair has a high price and also increases the engineering cost. Therefore, special attention must be paid when wiring.
Do not use shielded wire. Instead, unshielded twisted pair UTP should be used.
7, overestimate the product's waterproof, anti-jamming and lightning protection capabilities. In fact, electronic products are afraid of moisture and electricity.
Magnetic interference, more afraid of lightning. Twisted pair transmission equipment, due to the balanced transmission characteristics of twisted pair, common mode dry
Perturbations have a strong ability to suppress, but it is not a panacea. Lightning protection is one of the small functions.
The discharge circuit can only release the lightning on some thunderbolts with low voltage and low current.
Must be grounded to be useful! When tens of thousands of volts of lightning strike, the big tree can be cut into plates and small twisted pairs
Transmitters, housings can all be melted down. What else can a detonator do? So when engineering wiring, should
The area that bypasses rain, strong disturbances, and direct lightning strikes, if there are outdoor outdoor routes
Shape, should do as much as possible dedicated grounding to enhance lightning protection. At the same time improving the environment where the product is installed, letting
Prepare to work in a clean, dry environment, more stable and reliable work.
8, the wiring and installation process is too bad, leading to poor results. Unshielded twisted pair that we purchased in the market
The lines are all 305 meters in a box, but the points in the project are left, right, and close, so they are less than
In a short place at 305 meters, you need to break the cable's foreskin and pick out the line to pick up the camera. The long place will be
Need to connect two or more boxes of wire, it is best to use solder welding to secure the wiring, and wrap it well.
Do a good job of waterproofing, and pay attention to the color matching of the twisted pair to ensure that the transmission line is not a problem. In addition,
The converters used in the front end, especially the passive converters, are small in size, and many engineering companies connect them
Put in the shield, the problem is not great for a fixed camera, but if it is with pan/tilt, due to twisted
The line is relatively thin and relatively brittle. It is easy to break the twisted pair when the head is rotating. So at this time you should use the signal soft
Connect the soft video cable out and install the converter in a fixed place, keeping the twisted pair and the converter fixed.
ZHEJIANG KINGSIR VALVE CO., LTD. , https://www.kingsir-valve.com