CL-12SC, 1 Video 2 Audio 1 subcarrier (4.5Mhz) Audio over fiber

Rack-mountable CL-12SC Fiberoptic Composite Video multiplexer

The CL-12SC is ideal for transmitting 1 channel of baseband video, 1 channel of an RF Audio Subcarrier (4.5 MHz) and up to 4 channels of baseband audio on one fibreoptic cable. The CL-12SC operates by digitizing and multiplexing video, audio subcarrier and audio onto a high-speed serial cable.  Because the system employs 12-bit digital transmission techniques, performance characteristics are consistent and maintained over the specified distance with no degradation of signal. The low component count and use of custom ASICs increase system reliability and performance. The CL-12SC works with standard singlemode or multimode fibre optic cable and can be wall mounted or rack mounted. Both transmitter and receiver come equipped with internal power supplies.  Built-in diagnostics LEDs for each channel; loss of link facilitate the continuous monitoring of all phases of operation.

A subcarrier is one telecommunication carrier that is carried on top of another carrier so that effectively two signals are carried at the same time. At the receiving end, the main carrier and subcarrier signals are demodulated separately. A subcarrier can be used for some purpose entirely different from the purpose of the main carrier. For example, broadcast audio signals in the AM and FM ranges can carry a subcarrier along with the main audio signal. According to the U.S. Federal Communications Commission, these subcarrier channels can be used for many different purposes, "including (but not limited to) paging, inventory distribution, bus dispatching, stock market reports, traffic control signal switching.

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  1. High Quality 10-bit Digital Sampling of Video Input
  2. Digital Transmission of Audio Subcarrier Input for 4.5 MHz
  3. Baseband Video or composite Video/Audio Transmission
  4. Optional 2, 4 External Channel Audio Transmission
  5. External Audio Compatible with Balanced or Unbalanced Audio Formats
  6. Transmit up to 110km over one strand of fiberoptic cable
  7. High Quality Uncompressed Digital Transmission
  8. 67dBSNR - Bidirectional Transmission available

Example Aplication

Model Selection

CL-12SC-T 1 Video, 2 Audio 1 subcarrier 4.5Mhz Audio fiber optic transmitter 40Km , Singlemode, SC/APC
CL-12SC-R 1 Video, 2 Audio 1 subcarrier 4.5Mhz Audio fiber optic receiver 40Km , Singlemode, SC/APC
CL-14SC-T 1 Video, 4 Audio 1 subcarier 4.5Mhz Audio to fiber transmitter 40Km , Singlemode, SC/APC
CL-14SC-R 1 Video, 4 Audio 1 subcarrier 4.5Mhz Audio to fiber receiver 40Km , Singlemode, SC/APC
CL-XX-X-80 1 Video, 4 Audio 1 subcarrier 4.5Mhz Audio to fiber , 80Km
CL-XX-X-120 1 Video, 4 Audio 1 subcarrier 4.5Mhz Audio to fiber , 120Km


Standars: NTSC, PAL, SECAM
Channels: 1 x Baseband Video, 1 x 4.5 MHz Audio Subcarrier, 2 or 4 Audio (optional)
Video Bandwidth: 10 Hz to 6.5 MHz
SNR/dP/dG: 67 dB, < 1 deg / < 0.5%
Video I/O: BNC, 1V p-p, 75 ohm
Audio Subcarrier: 10 Hz to 6.5 MHz
Audio Subcarrie I/O: BNC, 1V p-p, 75 ohm
External Audio I/O: Terminal Block, 1V p-p, 10 Kohm
Dimensions: 480mm x 225mm x 44mm
Environment: Operating temperature: 0°C to 50°C Storage temperature: -20°C to 70°C Operating humidity: 10% to 90% RH Storage humidity: 5% to 90% RH
Input Power Requirements: Voltage: 110/240V Auto-sense Internal Power