Description:
The 8CH CCTV Video Balun allows 8 base-band composite video signals and power supply as well PTZ/Data to be transmitted via unshielded twisted pair (UTP) cable for more versatile cabling. The Balun can be used with Balun with power & data thru or Balun with Power converter for wide applications, and eliminate more expensive coaxial cables, including coupling signals from remote video cameras to display systems, video capture, and surveillance monitoring applications. Owing of reliability and easy installation, the device uses terminal block instead of using crimping tool’s common RJ45 jack.
Features:
1. 8 balun are installed within one package, 8x1BNC-F and screw terminal block for UTP cables
2. One DC jack provided one power input and is shared by eight cameras.
3. One terminal block with two pins provided one Data signal input to control eight PTZ cameras.
4. Located at DVR or monitor receiving side.
Specification:
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Environment
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CCTV equipment for security and surveillance.
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Devices
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CCTV cameras, monitors, multiplexers, digital video recorders (DVR) and other CCTV equipment.
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Bandwidth
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Video DC to 8MHz
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Maximum input
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1.0Vp-p
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Insertion loss
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Max. 2dB per pair over the frequency range from DC to 8MHz
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Return loss
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Greater than 15dB over the frequency range from DC to 8MHz
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Cross talk
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Greater than 40dB over the frequency range from DC to 8MHz
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Common mode rejection
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Greater than 40dB at 8MHz
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Video transmission Max.distance
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Color: Cat.5 2230ft (680 Meter)
Monochrome: Cat.5 2550ft (780 Meter)
No qualified cable might decrease the transmission distance.
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Cable-UTP
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Cat 5 or better, 24 gauge typical
Max. capacitance :20pf/ft
Attenuation: 6.6dB/1000ft at 1MHz
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Cable-Coax
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Impedance: 75 ohm at 1MHz, Max. 25ft. of coax allowed per end to end link
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Connectors
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Screw terminal block, BNC Male, DC jack and a two pins of terminal block, GND
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Polarities of each CH
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Video1+2- Power thru3+4- Data thru5+6-,8CHs share the same Power & Data
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Impedance
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75 ohm to 100 ohm (or 75ohm to 120ohm on request)
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Temperature
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Operating temp. 0 to 55° C
Storage temp. -22 to 85°C
Humidity up to 95%
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Data
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PTZ by RS485. It can be transmitted up to 1000m.over CAT5 UTP.
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Dimension
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340*102*32 in mm, BNC& terminal block connectors are included.
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Weight
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800g (PV Balun) , 900g (PVD Balun)
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Remote Power: (ie: 24VAC, 28VAC)
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Max. Distance @ 24Vac via an UTP Cat 5 cable
(24 AWG):
Based on 10% voltage drop at camera.
Longer distance may be achieved @ 28VAC or use
Power converter with Balun items.
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VA
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Distance
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5VA
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558ft(170m)
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10VA
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279ft (85m)
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20VA
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141ft ( 43m )
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30VA
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92ft ( 28m )
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Vmax input voltage
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50VDC/AC
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Imax. current Rating
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4.5A
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Installation:
1. Run cameras and single channel PV(D)Balun w/BNC-M coax cable Balun transmitters at cameras’ side.
2. Connect female power connector (and PTZ’Data - UTP cable directly) to camera.
3. Run UTP cables between PV(D) Baluns and CCTV 8 CH Power Video Data (PVD) Balun.
Please pay attention to the wirings of screw terminal block pins for Video, Power, Data connection, it is easy to make the mistake at this step. Please make sure you get one pair UTP cable for Video, the second and third pair UTP cables for Power (positive and negative), and the forth UTP cables for PTZ/Data connection in correct order. For Power Video (PV) application, you can share the forth UTP cable as power cable for longer distance transmission in case of no PTZ/Data signal transmission needed.
Please pay attention to the wirings of screw terminal block pins for Video, Power, Data connection, it is easy to make the mistake at this step. Please make sure you get one pair UTP cable for Video, the second and third pair UTP cables for Power (positive and negative), and the forth UTP cables for PTZ/Data connection in correct order. For Power Video (PV) application, you can share the forth UTP cable as power cable for longer distance transmission in case of no PTZ/Data signal transmission needed.
4. Plug the outputs of power supply to DC jack on CCTV 8 CH Power Video Data Balun.
5. Connect Data control signal to terminal block on CCTV 8 CH Power Video Data Balun.
6. Run coaxial cables connection between CCTV 8 CH PVD Balun and DVR/Mornitor.