1CH Active CCTV Audio/Data Video Balun Receiver (VB302R) Description:
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 ability2. 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 signal3. The farthest transmission distance will be 1500m if it is used with passive transceiver and the farthest transmission distance can reach 2400m if it is used with active transmitter 4. Outstanding interference rejection, transient protection5. Aluminum alloy case Technical specifications:
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.)
|1CH Active CCTV Audio/Data Video Balun Receiver (VB302R)|
|Video Format||NTSC, PAL, and SECAM |
|Frequency Response||DC to 8MHz|
|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%|
|Connector||Female BNC, RJ45 and Terminal Block|
|Case||Aluminum alloy case|
Characteristic impedance: 100Ω
±20ΩDifferential capacitance: 62pf/m (Maximum)
DC loop resistance: 18Ω/100m 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. Connect the BNC interface of the receiver to the monitor or other recording equipments. 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!Adjusting method:Adjust "BRIGHTNESS" knob to adjust the image brightness, then adjust "SHARPNESS" dial switch to compensate the image sharpness and color. The compensation size in turn is 1 as minimum and 4 as maximum. Pressing dial switch shows the compensation of this position is turned on. Next or multiple switches can be pressed according to the requirements. The four dial switches can compose 16 compensation values (as shown in the following figure) to meet the requirements of different transmission distances. Frequently Asked QuestionsWhy 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.FAQ:1.HOW LONG CAN I GET THE FEEDBACKS AFTER WE SEND THE INQUIRY? We will reply to you within 8 hours in working days.2.ARE YOU A DIRECT MANUFACTURER OR TRADING COMPANY?We are a factory. We also have our own international trade department . 3.WHAT PRODUCTS CAN YOU OFFER?We mainly produce CCTV power supplies, power adapters, CCTV connectors, video baluns, and other CCTV accessories.4.CAN YOU DO OEM PRODUCTS?Yes, we can. 5.HOW MANY EMPLOYEES OF YOUR COMANY? WHAT ABOUT TECHNICIANS?We now have 260 employees, including 10 engineers and 10 technicians.6.HOW TO GUARANTEE THE QUALITY OF YOUR GOODS?Firstly, we will do the inspection after every process. For the finished products, we will do 100% inspection according to the customers' requirements and the international standard.7.WHAT'S YOUR TRADE AND PAYMENT TERMS?When we quote for you, we will confirm with you the way of transactions ,EXW, FOB, CIF, CNF, etc.For mass production goods, you need to pay 30% deposit before production and 70% balance before shipment. The most common way is T/T. Of course, Western Union, Paypal, MoneyGram, L/C are also acceptable according to different situations.8.HOW TO DELIVER THE GOODS TO US?Usually we will ship the goods to you by sea, because we are in Hangzhou. We are between Shanghai Port and Ningbo Port. It is very convenient and efficient to ship goods to any other countries. Of course, if your goods are very urgent, the Ningbo Airport and Shanghai Airport are also very nearby. So we can send the goods to you by air or by courier such as TNT, FedEx, DHL, UPS,etc.9.WHERE ARE YOUR PRODUCTS MAINLY EXPORTED TO?Our products are mainly exported to the United States , the United Kingdom , Italy, Spain, Netherland, Portugal, France, New Zealand, Singapore, South Africa, Mexico, Colombia, and many other countries. WHY CHOOSE US1.Long History and Stable ProductionWe have more than 10 years' experience in the CCTV security and surveillance industry.We have exported our products to more than 50 countries and regions, such as the USA, UK, Italy, Spain, Netherland, Portugal, France, New Zealand, Singapore, South Africa, Mexico, Colombia, etc.Our production capacity is stable. We can arrange the shipment to you in time .2. Strict Quality Control System We have strict quality control system. All of our technicians are professional. They are strict on quality control.Before order, we can send the samples for your testing . We ensure the quality is the same as bulk order.3.Prompt ResponseWe will reply to you within 8 hours in working days.4. Prompt DeliveryWe can usually deliver goods between 7 to 15 days.We have good cooperation with many professional forwarders here. We can send the goods to you on time.5. Long Warranty TimeOur warranty time is two years.If there is something wrong with the products we sell, we will support you with technical analysis and solutions. We will also supply replacements if necessary.We have sold a lot in the USA market for over 10 years and with very few bad feedbacks. The failure rate is less than 1%.6.FREE Lifetime Technical SupportOur technical support is provided freely throughout pre-sale, on-sale and after-sale.7.Knowledgeable Sales & Support StaffWe have a strict staff selection criteria and training system. 8.Outstanding Customer Testimonials 9.We NEVER Sell or Share Your InformationWithout your permission, we will never sell or share your information to any person or company.10. We Have Long-Term Development PlanningOur purpose is not simply to make money. We intend to make the brand reputation with 3 to 5 years. So we pay great attention to quality and service.