1ch Active Video/Audio/Data Transmitter for CCTV Cameras (VB302T)
Description:
The VB302T active UTP video Transmitter converts the unbalanced signal into balanced signal and transmits the signal after pre-raise. Receiver receives balanced signal to convert it into unbalanced signal and restores the received signal with one channel of audio transmission function and two channels of data (or standby interface) with perfect receiving effect, which can be applied in the occasions such as video monitoring and video meeting, simplify the wiring project and save wire use quantity.
Features:
1. Adopt differential signal transmission with excellent anti-jamming ability
2. Save project wire expenses, each a pair of twisted pair wire transmits one channel of video signal and one common Cat-5 unshielded twisted pair wire can simultaneously transmit four channels of video signal
3. The farthest transmission distance can reach 2400m if it is used with active receiver
4. Outstanding interference rejection, transient protection
5. Aluminum alloy case
Technical specifications:
| 1ch Active Video/Audio/Data Transmitter for CCTV Cameras (VB302T) |
| Video Format | NTSC, PAL, and SECAM |
| Frequency Response | DC to 8MHz |
| Attenuation | 0.5dB typ |
| CMRR | 60 dB |
| Impedance | Coax, Male BNC | 75 ohms |
| RJ45/Terminal Block | 100 ohms |
| Working environment | Working Temperature | -10ºC to +70ºC |
| Storage Temperature | -30ºC to +70ºC |
| Humidity | 0 to 95% |
| Wire Type | UTP5 |
| Connector | Female BNC, RJ45 and Terminal Block |
| Power | 12VDC (Max:90mA) |
| Case | Aluminum alloy case |
| Dimension | 105mm*70mm*29mm |
| Weight | 185g/pc |
Type of the required wire:
Unshielded Cat-5 or above twisted pair wire (Please use standard Cat-5 or above twisted pair wire. The wire quality will directly affect the transmitted image effect and transmission distance.)
Characteristic impedance:100Ω±20Ω
DC loop resistance: 18Ω/100m
Differential capacitance: 62pf/m (maximum)
Connection method:
Connect the two-color wires of a pair of Cat-5 unshielded twisted pair wire to the '+' terminal of the green socket and connect the single-color wires to the '-' terminal of the green socket. Connect the BNC interface of the transmitter to the BNC interface of the camera. If there is any joint in the circuit, please adopt welding method or special junction box to ensure perfect contact at the joint. Please be sure to connect the interface marked with '' symbol to the ground wire of the lighting-proof system with the copper conductor with sectional area≥1.5 mm2!
The clamping order of the modular plug is shown as follows:
Adjusting method:
Adjust and slide the switch according to the distance. The switch can be slid to the lowest level when the distance is between 1400m and 1700m, the switch can be slid to the middle level when the distance is between 1700m and 2000m and the switch can be slid to the highest level when the distance is more than 2000m (as shown in following figure). This data is the test result of our company with standard unshielded Cat-5 twisted pair wire and it can be applied flexibly according to the actual wire situation in the practical application.
Frequently Asked Questions
Why does my video look like a scrambled Cable TV signal?
This typically indicates reversed polarity.
Can shielded twisted pair be used?
Some customers have successfully used shielded wire up to a few hundred feet. However we does not recommend it. Its high-frequency roll-off will severely degrade the distance performance.
Can Category 6 wire be used?
Yes. Unshielded Twisted Pair wire, Category 5 or better, can be used with UTP video transceiver.
Can I transmit more than one video signal in a multi-pair wire bundle?
Yes. One of the benefits of using UTP video transceivers is interference rejection. UTP video signals can reside in the same wire bundle as multiple video signals, ringing telephones, Ethernet, low voltage power, RS-422, RS-485, etc.
Application Diagram
Chinasky Electronics Co., Ltd. is the leading manufacturer and exporter of CCTV products in China. We are specialized in developing, manufacturing and exporting CCTV power supplies, Video Baluns, BNC connectors, CCTV cables, CCTV Tools & CCTV testers and other CCTV accessories with more than 10 years' experience in the security and surveillance industry. We have established business relationships with customers all over the world with good reputation and feedback for our products and service.
The mission of Chinasky Electronics is to provide quality products and competitive prices to our customers. With a strong research and development team, well-established production capacity, and very strict quality control system, we are able to ensure your security and surveillance needs. We have an energetic, enthusiastic, professional and powerful sales team to be in charge of all exporting inquiries and orders and provide quality advice to achieve customers' OEM and ODM requirements.
In order to guarantee our products to be exported and re-sold in other countries safely, our products are in accordance with global testing standards, such as CE (EMC & LVD), IEC60950-1, UL/cUL, SAA, GS, TUV, PSE, RoHS, etc. We work with accredited third party labs (SGS, INTERTEK, ANBOTEK, CPC) to ensure all products we supply are compliant and valid for import into the target markets. We have made a lot of certificates and test reports for our exported products from accredited third party labs.
We aim to create long-term, win-win partnerships with our customers. We are aware that trust and communication are essential for long-term partnerships. We value our customers' success as well as ours.
If you are interested in any of our products and services, please don't hesitate to contact us. We are ready to reply you within 24 hours after receipt of your request.
