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DOSS 2012 CCTV Balun Range (.pdf)



The main feature of the VPPB45PCA is its ability to convert 24-28VAC to regulated 12VDC at the camera, allowing the system to be highly tolerant of voltage drop in the cable. The VPPB45PCA has a mini-coax pigtail lead which allows quick mounting onto fixed cameras and allows in-camera mounting in most dome cameras. RJ45 jack connection for UTP cable, enabling quick and simple installation. Working in pairs, the VPPB45PCA eliminates costly and bulky coaxial cable, allowing live CCTV colour video signal up to 400m (1300ft), power transmission up to 250m (750ft) and PTZ data up to 200m (600ft).

The superior interference rejection and low emissions of the VPPB45PCA 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 VPPB45PCA has built-in surge suppression to protect video equipment against damaging voltage spikes. Its crosstalk and noise immunity ensure quality video signals.

Example scenarios

4x PTZ cameras connected to DVR & controller

The DOSS Range of UTP Video+Power+PTZ 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 Unshielded Twisted Pair (UTP) cable, without any compression, loss or signal degradation and without the need for extra power supplied to be installed. Baseband (composite) signals of any type are supported. 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. With PTZ/Data transmission built-in, you can still control all your PTZ cameras and other devices without any extra baluns or cables.


  • 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


  • Single Channel Passive Video, Power & PTZ/Data Transceiver
    • Down-converts 24-28VAC to regulated 12VDC
      (voltage conversion at video transmitter end only)
  • Full-motion colour signal up to 400m (1300ft) and
    monochrome (B&W) up to 600m (1950ft) via UTP CAT5e/6
  • Transmit power signal up to 250m (750ft)
  • Transmit data/PTZ signal up to200m (600ft)
  • NTSC, PAL & SECAM video format compatible
  • Real-time transmission
  • Male BNC with extended mini-coax pigtail
  • RJ45 Jack
  • No power required
  • Exceptional interference rejection
  • Built-in TVS (Transient Voltage Suppressors) for surge-protection
  • Lightning protection design Grade III
  • 50dB crosstalk and noise immunity
  • Wave Filter Design, Anti-Static Design
  • Compact size and easy installation
  • ABS engineering plastic housing


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)
Color: 400m (1300ft)
B&W: 600m (1950ft)
Common-mode /
Differential-mode rejection
15kHz to 5MHz 60dB typical
Impedance Coax, Male BNC 75O unbalanced
UTP, two coax pigtail 100O 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 18O per 100m (52O per 1,000ft)
Differential Capacitance 62 pF/m max (19 pF/ft max)
Power No external power required to operate
Power input/output 24~28VAC input (Video receiver end)
12VDC output (Video transmitter end)
PTZ signal Transmission distance Up to 300m (1000ft) via UTP CAT5e/6
Connector Video input/output Male BNC connector
Video input/output 8P8C (RJ45) Jack
Protection Surge Protection Renewable solid state surge protection
Video Input 2KV(common mode),
10/700µs IEC6100-4-5/1955(GB/T 1726, 5-1999)
Video Output 2KV(different mode),
10/700µs IEC6100-4-5/1955(GB/T 1726, 5-1999)
Mechanical Housing ABS engineering plastic
Body Color Black
Dimensions (L*W*H) 60.4*29*20.4mm (BNC connector & cable excluded)
Net Weight 65g
Environmental Operating Temperature -20°~ 70°C
Relative Humidity 0~95% (non-condensing)
Storage Temperature -40°~ 150°C


{tab=Reference: Wiring}

Video+Power+PTZ Balun wiring

DOSS Video &
Power Baluns
T568A T568B
Pin 1 Video White/Green White/Orange
Pin 2 Video Green Orange
Pin 3 Data + White/Orange White/Green
Pin 4 Power – Blue Blue
Pin 5 Power – White/Blue White/Blue
Pin 6 Data – Orange Green
Pin 7 Power + White/Brown White/Brown
Pin 8 Power + Brown Brown


{tab=Reference: Voltage Drops }

Power over Twisted Pair: Voltage Drop Reference

Transmission Voltage (Voltage Drop)
camera requirement
camera requirement
camera requirement
50m / 160ft 13.5V (1.5V) 15.5V (3.5V) 17.0V (5.0V)
100m / 320ft 15.5V (3.5V) 18.5V (6.5V) 22.0V (10.0V)
150m / 500ft 17.0V (5.0V) 22.0V (10.0V) 27.0V (15.0V)
200m / 650ft 18.5V (6.5V) 25.5V (13.5V) 32.0V (20.0V)
300m / 1000ft 22.0V (10.0V) 32.0V (20.0V) 42.0V (30.0V)
eg: to supply a camera that requires 12VDC/0.5A, over a run of 150m cable, you require an initial transmission voltage supply of 17.0VDC (to account for 5V voltage drop over cable)
Note: based on typical CAT5e cable (will vary on make and quality of cable)