One Channel Video with Bi-Directional Data and Contact Closure, Point-to-Point Transmission

One Channel Video with Bi-Directional Data and Contact Closure

The FDVA-DB1-IB1 series uses the most advanced digital technologies to provide excellent repeatable performance for today’s CCTV systems. It supports transmission of one analog composite video channel, with one bi-directional data channel and one bi-directional contact closure signal over one multimode or singlemode optical fibre. PAL, NTSC and SECAM video standards are fully supported and the data channel supports all standard PTZ (Pan-Tilt-Zoom) control signals. The plug-and-play design ensures ease of installation with no electrical or optical adjustment needed. LED indicators are provided to clearly show the operational status of the unit. The series is available in compact or 3U chassis card.

Typical System Configuration:

One Channel Video with Bi-Directional Data and Contact Closure diagram


  • 8 or 10 bit digitally-encoded, non-compressed video transmission
  • Fully independent, bi-directional contact closure circuit
  • Up to 14 receivers in one 3U chassis
  • Cost effective WDM single fibre solution
  • Switchable 120Ω termination and line biasing
  • LED indicators provide quick diagnosis of all important system parameters
  • Multimode and singlemode models
  • Compact and 3U chassis card configurations



  • No. of Channels: 1
  • Format: PAL / NTSC / SECAM
  • Input/Output: 1.0V pk-pk typical, 75Ω
  • Bandwidth: 5 Hz ~ 6.5 MHz
  • Digital Encoding (non compressed): 8 bit 10 bit
  • Differential Gain (10-90% APL): <2.0% <2.0%
  • Differential Phase (10-90% APL): <2.0° <1.0°
  • SNR: >60dB >67dB


  • Data Formats: RS232, RS422, RS485 (2W & 4W)
  • Number of Two-way Channels: 1
  • RS232 Data Rate: DC – 115.2 kbps
  • RS422/485 Data Rate: DC – 250 kbps
  • Bit Error Rate: <1 x 10-12
  • Encoding Schemes: Manchester, Bi-Phase, NRZ, NRZI

Contact Closure

  • No of duplex channels: 1
  • Response Time: 500μs
  • Input: Dry Contact Closure, TTL
  • Output: SPST Relay, Normally Open
  • Switch Rating: 1A @ 30 Vdc; 0.5A @ 125 Vac max



  • Wavelength: 1310nm/1550nm
  • Fibre: Multimode or Singlemode
  • Number of Fibres: 1


  • Power Input Compact: 12-24 Vac/dc @ 200mA
  • Power Supply: Input: 100 ~ 240 Vac; Output: +12 Vdc; UL and cUL listed PSU
  • Chassis Card: Supplied from FR3 PSU


  • Operating Temperature: -40°~+70°C / -40°~+158°F
  • Storage Temperature: -40°~+70°C / -40°~+158°F
  • Operating Humidity: 0 to 95% non-condensing
  • Mean Time Between Failure (MTBF): >100,000 Hours


  • Dimensions (Compact L x W x H): 70mm x 61mm x 44mm (2.8” x 2.4” x 1.7”)
  • Number of 3U Chassis Card Slot: 1


  • Video: BNC 75Ω
  • Fibre: ST, SC or FC (ST fitted as standard)
  • Power: Screw Block Terminal
  • Contact Closure: Screw Block Terminal
  • Data: Screw Block Terminal

DIP Switch Settings

  • Data: Switch Selectable
  • 120Ω Termination: On / Off
  • Biasing: On / Off

Live Demo of FRM220 Chassis

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