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Details
Fiber optic video converter ULTIMODE V-208D allows to transmit eight video channels and telemetry data channel (RS-485) via one optic fiber up to 20 km.
View of the V-208D converter set
Front view
Rear view
Distinguishing features:
- 8 video channels
- 1 one-way RS-485 data channel
- maximum transmission distance 20 km
- transmission via one single-mode fiber (WDM)
- LED indicators showing operating status
- the set contains video transmitter and video receiver, and 2 power supplies
- very easy installation
The ULTIMODE V-208D video converter uses the latest optical technology. It ensures transmission via single optical fiber of 8 video channels and 1 one-way RS-485 data channel (in opposite direction - from the video receiver to the video transmitter). It is possible due to the use of wavelength-division multiplexing technology (WDM) - different wavelengths of laser light to carry different signals, over one strand of fiber. It significantly lowers installation costs. The L2821 set contains 2 modules - video transmitter marked "T" and video receiver marked "R" - and 2 power supplies (output: 12VDC/3A).
One of the devices transmits optical signal in the III transmission window (1550 nm), whereas the second uses the II window (1310 nm). Sensitivity of the receiver and output power of the transmitter is adapted to transmit information up to 20 km. In the case of shorter distances (up to 2 km), it is required to use additional 2dB attenuators by the receivers. They will protect them against "burning". Durable laser diode with Fabry-Perot resonator ensures the mean-time-between-failure (MTBF) at least of 100000 hours (more than 11 years).
The set is compatible with NTSC/PAL/SECAM systems and ensures high quality transmission of live video over distances up to 20 km, much longer than those offered by standard devices. The possibility of sending control signal (RS-485) from the video receiver to the video transmitter allows to use PTZ cameras.
Specifications:
| Optical port | Connector: | SC | |
| Max range: | 20 km | ||
| Wavelength: | 1310/1550 nm | ||
| Video transmitter: | Rx sensitivity: | -35dB ... -3dB | |
| Tx power: | -8dB ... -3dB | ||
| Video receiver: | Rx sensitivity: | -22dB ... -3dB | |
| Tx power (data): | -15dB ... -5dB | ||
| Video | Number of channels: | 8 | |
| Connectors: | BNC | ||
| TV system: | NTSC/PAL/SECAM | ||
| Level/impedance: | 1 Vpp / 75 Ω | ||
| Bandwidth: | 5 ... 7.5 MHz | ||
| DG: | < 1% | ||
| DP: | < 1% | ||
| SNR: | > 70 dB | ||
| Data | Number of channels: | 1 | |
| Bandwidth: | 0 – 400 kb/s | ||
| BER: | < 10-9 | ||
| Interface: | RS-485 | ||
| Power and Environment | Operating temperature range: | -10 ... 75 oC | |
| Operating humidity: | 0 – 95 % (no condensation) | ||
| Power: | 5VDC/3A | ||
NOTICE!! It is not allowed to look directly at the fiber port when the device is plugged. The radiation invisible for the human eye can damage the retina!
Why to choose fiber optics:
- possibility of sending signal over long distances (low attenuation of optical fibers - e.g. for the wavelength of 1550 nm the attenuation is about 0.2 dB per kilometer, which means that the signal can be sent at a distance of 200 km - without regeneration)
- high-volume information transfer via single fiber
- resistance to electromagnetic interference
- resistance to weather conditions (humidity, electrostatic discharges and others)
- no tapping possibility
- low weight and small dimensions
ULTIMODE video converters are widely used for the transmission of CCTV signals over long distances and in areas exposed to harsh weather conditions. Optical fibers provide full electrical insulation and resistance to electromagnetic interference. Below there is a sample application of ULTIMODE converters.
Example application of ULTIMODE video converter
Video converters of ULTIMODE series can cooperate with all CCTV cameras. They are designed for indoor operation. Our offer also includes video converters with 1 video input and data channel (L2121), with 4 video inputs and data channel (L2421), and a model with audio and alarm channels (L2423).
List of parameters of ULTIMODE media converters from V-20x... series
| Name | V-201D | V-204D | V-204DAO | V-208D |
| Code | L2121 | L2421 | L2423 | L2821 |
| Optical connectors | SC | SC | SC | SC |
| Max range [km] | 20 | 20 | 20 | 20 |
| Wavelength [nm] | 1310/1550 | 1310/1550 | 1310/1550 | 1310/1550 |
| Number of video channels | 1 | 4 | 4 | 8 |
| Video connectors | BNC | BNC | BNC | BNC |
| TV systems | NTSC/PAL /SECAM | NTSC/PAL /SECAM | NTSC/PAL /SECAM | NTSC/PAL /SECAM |
| Number of data channels | 1 | 1 | 1 | 1 |
| Data interface | RS-485 | RS-485 | RS-485 | RS-485 |
| Throughput | up to 400 kb/s | up to 400 kb/s | up to 400 kb/s | up to 400 kb/s |
| Number of audio channels | - | - | 1 | - |
| Number of alarm channels | - | - | 1 | - |
| Power | 5VDC/2A | 5VDC/3A | 5VDC/3A | 5VDC/3A |