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DOSS 2012 CCTV Balun Range (.pdf)



With the same features and abilities as the DOSS Passive Video baluns, and the convenience of a single box, the VB8CH is able to mounted in a rack with your DVR or fixed in-wall/ceiling. Operation and function is identical to 8x BVB4x00 Passive Video Baluns. Capable of sending and receiving 8x Video signals over only 2 UTP cables.

Features 2x 8P8C (RJ45) connections (2x 4-in-1 video connections) and 8x screw terminal block for UTP cable, enabling quick and simple installation. Working with the DOSS Passive Video Baluns, the VB8CH eliminates costly and bulky coaxial cable, allowing live CCTV colour video signal transmission up to 400m (1300ft).

The superior interference rejection and low emissions of the VB8CH allow signals to coexist in the same wire bundle as telephone, datacom, or low-voltage power circuits. This allows the use of a shared or existing cable infrastructure. The VB8CH has built-in surge suppression to protect video equipment against damaging voltage spikes. Its crosstalk and noise immunity ensure quality video signals.

Example scenarios

Basic usage: 4x Cameras via 8CH Balun

8x Cameras via 2x 8CH Baluns

8CH Balun in use with 8CH Powered hub to increase run distance

The DOSS Range of UTP Video+Power Baluns allow you to connect your CCTV system using cheaper, thinner, lighter and more readily available CAT5E cable rather than expensive and bulky RG59U cable.

The passive (non-amplified) baluns allow transmission of realtime CCTV video signals and power over cost-effective Unsheilded Twisted Pair (UTP) cable, without any compression, loss or signal degradation and without the needfor extra power supplied to be installed. Sending camera power over the same twisted pair as video means less cabling, and no power supply required to be installed near to the camera. Baseband (composite) signals of any type are supported.


  • Security Monitoring System
  • Multimedia Network Teaching System
  • Medical Monitoring Display System
  • Industrial Automation Control System
  • Banking, securities, financial information display system
  • Remote Network Server Monitoring
  • Department Store Security
  • Casino Security
  • Hospitals, Airports and banks
  • School Campuses


  • 8-CH Passive Video Transceiver Hub
  • Receive colour video signals from up to 400m (1200ft) andfull motion monochrome (B&W) video signals from up to 600m (1800ft)

    via Unshielded Twisted Paired (UTP) wires

  • No power required
  • 8x BNC female Video input/output
  • 2x 4-in-1 Video input/output via RJ45 (single UTP cable) and 8-way screw terminal block
  • NTSC, PAL & SECAM video format compatible
  • Real-time transmission
  • Exceptional interference rejection
  • Built-in TVS (Transient Voltage Suppressors) for surge protection
  • Lightning protection design Grade: III
  • Wave Filter Design, Anti-Static Design,
    • Confirm to IEC 61000-4-2:1995 Standard
  • Metal housing: Black
  • Rack Mount and Wall Mount Capability



Applied Devices CCTV cameras, monitors, DVR, switchers, IP encoders, and other CCTV equipment
Video Video Format PAL, NTSC, SECAM
Operating Frequency DC to 5MHz
Max Distance UTP Category 5e (24AWG)

Colour: 400m (1300ft)

B&W: 600m (1950ft)

Common-mode /

Differential-mode rejection

15kHz to 5MHz 60dB typical
Impedance Coax, female BNC 75Ω unbalanced
UTP, 100Ω balanced
Attenuation 1.5dB Max typical
Wire Type Network Wiring One Unshielded Twisted Pair (for each video signal)

24-16 AWG (0.5-1.31mm)

Category Type 2 or better
Impedance 100 ±20 ohms
DC Loop Resistance 18Ω per 100m (52Ω per 1,000ft)
Differential Capacitance 62 pF/m max (19 pF/ft max)
Power No external power required to operate
Connector Video input/output 8x Female BNC connector
Video input/output 2x 8P8C (RJ45) Video (4-in-1)
Video input/output 2x 8-way screw terminal block
Protection Surge Protection Built-in Transient Voltage Suppressor (TVS)
Antistatic Yes
Mechanical Housing Metal
Body colour Black
Dimensions (L*W*H) mm
Net Weight
Environmental Operating Temperature -20º~ 70º C
Relative Humidity 0~95% (non-condensing)
Storage Temperature -40º~ 150º C


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