8-Channel Video Optical Multiplexer
Single-fiber aggregation of 8 video channels, 4 data channels, 4 audio channels, 2 Ethernet channels; one unit replaces multiple
The 8-channel video digital multiplexing optical multiplexer is a compact multi-service signal optical fiber transmission product tailored by our company for the security surveillance market. It can transmit up to 8 unidirectional video channels, 4 data channels, 4 bidirectional audio channels, and 2 Ethernet channels over a single optical fiber.
The 1.25Gbps single-fiber 8-channel video optical multiplexer is a compact multi-service optical fiber transmission device developed by Beijing Ruiguang Jiyuan Digital Technology Co., Ltd. (Raytrans) for the security surveillance market. It consists of a transmitter and a receiver as a pair, aggregating 8-channel unidirectional video from surveillance sites together with data, bidirectional audio, and Ethernet services onto a single optical fiber for real-time synchronous transmission. The IDM-VDA8200 series adopts all-digital uncompressed video technology and uses time division multiplexing and wavelength division multiplexing to transmit eight channels of video along with multiple data, bidirectional audio, and Ethernet information synchronously and without distortion over the optical fiber. The receive/transmit rate is 1.25Gbps for both directions, with a standard configuration of 20km single-mode transmission. The plug-and-play design simplifies installation with no on-site adjustment required. The optical module and core circuits use standard components, and the optical and electrical interfaces comply with international standards, making the device suitable for various operating environments. As a professional optical multiplexer manufacturer, Raytrans fully demonstrates the integration advantages of multi-service optical multiplexers in this product showcase, serving scenarios such as government private network optical fiber communication solutions.
Key Specifications at a Glance: 8-channel unidirectional video · 4-channel data · 4-channel bidirectional audio · 2-channel Ethernet · 1.25Gbps receive/transmit rate · 20km single-mode (multi-mode optional) · FC optical port (SC customizable) · industrial-grade -40℃~+85℃ wide temperature · overall power consumption ≤6W · dimensions 240×138×30mm
Figure 1: IDM-VDA8200 8-channel video optical multiplexer main unit appearance with 8-channel BNC video interfaces and FC optical port close-up
What is a 1.25Gbps single-fiber 8-channel video optical multiplexer?
The IDM-VDA8200 series is deployed between surveillance sites and the surveillance center. The transmitter digitizes the video signals from 8 cameras and sends them into the optical fiber, while the receiver restores and outputs them at the central side. A single optical fiber simultaneously carries 8-channel unidirectional video, 4-channel data, 4-channel bidirectional audio, and 2-channel Ethernet. The receive/transmit rate is 1.25Gbps for both directions, providing the bandwidth foundation for parallel transmission of multiple video channels and multiple services. This is the core distinction of the 1.25Gbps single-fiber 8-channel video optical multiplexer compared with low-speed video transmission solutions.
Traditional surveillance sites use coaxial cables to transmit video. When the distance exceeds a few hundred meters, a repeater amplifier is required, and the signal is susceptible to electromagnetic interference and ground potential difference, with image quality degrading over distance. The IDM-VDA8200 series transmits video signals over optical fiber in an all-digital uncompressed manner, with a standard configuration of 20km single-mode transmission. Long-distance optical modules can be optionally installed for longer-distance optical fiber transmission. The fiber mode is single-mode by default with multi-mode optional. The optical fiber link itself is free from electromagnetic interference (EMI) and radio frequency interference (RFI), making it suitable for government private network optical fiber communication solutions where sites are scattered and located hundreds of meters to 20km from the center.
One device replaces multiple stacked optical multiplexers — how does an 8-channel video optical multiplexer achieve single-fiber aggregation?
An 8-channel video optical multiplexer replaces multiple stacked optical multiplexers with a single device by multiplexing four types of services — video, data, audio, and Ethernet — onto the same optical link, rather than configuring a separate transmission device for each type of service.
The IDM-VDA8200 series simultaneously carries 8-channel unidirectional video, 4-channel data, 4-channel bidirectional audio, and 2-channel Ethernet over a single optical fiber. This combination is the full configuration of this series. The 8-channel video optical multiplexer multiplexes these services onto the same optical fiber for transmission. One device eliminates the stacking of multiple optical multiplexers, and the cabinet no longer requires separate standalone devices, supporting power supplies, and cable trays for video, control data, intercom audio, and network data. One device at the site side and one at the central side can handle all services. Fewer access points also mean fewer system-level points of failure. This is the direct value of the 1.25Gbps single-fiber 8-channel video optical multiplexer in private network projects.
The five models in the series use the same optical platform and video specifications, with all video channels being 8-channel unidirectional video. The differences lie only in the presence or absence of data, bidirectional audio, and Ethernet channels: the IDM-VDA8200 provides 8-channel unidirectional video plus 2-channel data; the IDM-VDA8040 provides 8-channel unidirectional video plus 4-channel bidirectional audio; the IDM-VDA8440 provides 8-channel unidirectional video plus 4-channel data plus 4-channel bidirectional audio; the IDM-VDA8402 provides 8-channel unidirectional video plus 4-channel data plus 2-channel Ethernet; and the IDM-VDA8442 provides 8-channel unidirectional video plus 4-channel data, 4-channel bidirectional audio, and 2-channel Ethernet, with a complete service configuration.
Differentiated Value of the IDM-VDA8200 Series
| Differentiation Point | Practical Value to Customers |
|---|---|
| Single-fiber aggregation of 8-channel video + 4-channel data + 4-channel audio + 2-channel Ethernet; one device eliminates the stacking of multiple optical multiplexers | A single optical fiber replaces multiple video coaxial cables and data cables. One device at the site side and one at the central side complete video, control, intercom, and network data backhaul, saving optical fiber, cabinet space, and commissioning time for each device |
| 1.25Gbps receive/transmit rate and 20km single-mode transmission meet the long-distance, high-bandwidth backhaul requirements of private networks | Sufficient bandwidth margin remains after multiplexing 8-channel video with data, audio, and Ethernet over the same fiber; the standard 20km single-mode configuration covers conventional links between stations and from plants to the center, and long-distance optical modules can be installed for extended reach |
| Video SNR ≥70dB, differential gain/phase <0.7, stable operation at industrial-grade -40℃~+85℃ wide temperature | Stable color and brightness reproduction at 8bit sampling and 0Hz~6.5MHz bandwidth; the industrial-grade wide-temperature model covers outdoor cabinets and unattended sites in summer heat and winter cold |
What Functions Does the IDM-VDA8200 Series Provide?
| Function | Description |
|---|---|
| 1.25Gbps optical transmission | The receive/transmit rate is 1.25Gbps for both directions, providing the bandwidth foundation for parallel transmission of 8-channel video with data, audio, and Ethernet services |
| SNMP network management | Supports SNMP network management for real-time online monitoring of device operating status on the link |
| Video quality | Video quality reaches broadcast-grade standards, with 8-channel uncompressed synchronous video transmission |
| Audio quality | Audio quality reaches CD-grade standards, with audio sampling bit width of 16bit and sampling frequency of 32KHz |
| Multi-format compatibility | Compatible with PAL, NTSC, SECAM and other video formats, adapting to cameras and monitors of different formats |
| Port protection | SMT surface mount technology, with multiple protection against lightning and surge at ports |
| Anti-interference capability | Free from electromagnetic interference (EMI) and radio frequency interference (RFI) |
| Video lossless regenerative repeater | Supports video lossless regenerative repeater, introducing no additional compression loss in long-link regeneration |
| Transparent transmission of data | Transparent data encoding, compatible with the products of major camera manufacturers |
| Adaptive, adjustment-free | Adaptive technology requires no on-site electrical or optical adjustment during use |
| Industrial-grade compact design | Industrial-grade design with modular construction for reliable and flexible operation, compact structure, and flexible and convenient installation |
As a professional optical multiplexer manufacturer, Raytrans offers the IDM-VDA8200 series multi-service optical multiplexer, which can handle multi-service aggregation and backhaul of video, data, audio, and Ethernet in government private network optical fiber communication solutions. The technical specifications and service configurations presented in the product showcase are all oriented toward the actual deployment requirements of private network surveillance projects.
Technical Specifications of the 8-Channel Video Digital Multiplexing Optical Multiplexer
Optical Interface Parameters
| Item | Parameter/Specification | Description/Applicable Conditions |
|---|---|---|
| Interface type | FC (SC and others customizable) | Optical port connector type, customizable according to project optical fiber patch cord configuration |
| Fiber mode | Single-mode (multi-mode optional) | Single-mode is the standard configuration; multi-mode is optional |
| Receiver receive/transmit rate | 1.25G bps / 1.25G bps | Receive direction and transmit direction rates |
| Receiver receive/transmit wavelength | 1310nm / 1550nm | Used in pair with the wavelength of the remote transmitter |
| Transmitter receive/transmit rate | 1.25G bps / 1.25G bps | Transmit direction and receive direction rates |
| Transmitter receive/transmit wavelength | 1550nm / 1310nm | Used in pair with the wavelength of the remote receiver |
| Transmit optical power | -9~-1dBm | Output optical power range of the transmitter |
| Receiver sensitivity | Better than -21dBm (1310nm) | Used to determine the optical power margin of the link |
| Transmission distance | 20Km; long-distance optical modules can be optionally installed for longer-distance optical fiber transmission | Based on single-mode fiber configuration |
Video Channel Parameters
| Item | Parameter/Specification | Description/Applicable Conditions |
|---|---|---|
| Interface type | BNC | Video port for connecting cameras and monitors |
| Video sampling bit width | 8bit | A/D sampling precision |
| Video bandwidth | 0Hz~6.5MHz | Covers the video bandwidth of PAL, NTSC, and SECAM formats |
| Luminance non-linearity | <3% | Video transmission linearity specification |
| Differential phase (DP) | <0.7° | Chrominance phase distortion specification |
| Differential gain (DG) | <0.7% | Chrominance gain distortion specification |
| Input overload voltage | 1.5VP-P (typical) | Allowable overload level at the video input |
| Input/output voltage | 1VP-P (typical) | Standard video signal level |
| Input/output impedance | 75Ω (unbalanced) | Consistent with the impedance of conventional video coaxial cables |
| Video SNR | ≥70dB (weighted) | Weighted SNR specification, reflecting the noise level of surveillance video |
High-Fidelity Audio Channel Parameters
| Item | Parameter/Specification | Description/Applicable Conditions |
|---|---|---|
| Interface type | RJ45 | Audio input/output connector |
| Audio sampling bit width | 16bit | A/D and D/A sampling precision |
| Audio sampling frequency | 32KHz | Audio sampling clock |
| Input/output impedance | ADC:100KΩ / DAC:10KΩ | Input and output impedances differ; connect according to port markings during wiring |
| Input/output voltage | 1.5VP-P (typical) | Audio signal level |
| Audio bandwidth | 20Hz~20KHz | Covers the frequency range of voice and conventional audio services |
| Audio SNR | ≥90dB | Audio channel SNR specification |
| Total harmonic distortion | <1% | Audio non-linearity distortion specification |
Data Channel Parameters
| Item | Parameter/Specification | Description/Applicable Conditions |
|---|---|---|
| Interface type | RJ-45 | Data port connector |
| Data type | RS-232, RS422 (4-wire), RS485 (2-wire) | Select the wiring method according to the interface type of the on-site control device |
Ethernet Channel Parameters
| Item | Parameter/Specification | Description/Applicable Conditions |
|---|---|---|
| Interface type | RJ-45 | Ethernet port connector |
| Transmission rate | 10M/100M adaptive | Auto-negotiation with the remote network device |
| Standard protocol | Supports IEEE802.3 | Ethernet standard protocol |
| Operating mode | Full/half duplex/adaptive | Automatically matched to the capabilities of the remote port |
Power Supply, Environmental and Structural Parameters
| Item | Parameter/Specification | Description/Applicable Conditions |
|---|---|---|
| Power supply mode | AC220V / DC-48V | Selected according to the power supply conditions of the equipment room or site |
| Overall power consumption | ≤6W | Power consumption of a single-end device |
| Operating temperature | -15℃ ~ +65℃ | Operating temperature range of conventional models |
| Storage temperature | -25℃ ~ +75℃ | Storage temperature in non-operating state |
| Industrial-grade temperature | -40℃ ~ +85℃ | Operating temperature range of industrial-grade wide-temperature models |
| Relative humidity | 0~95% (non-condensing) | Operating environment humidity conditions |
| Product dimensions | 240×138×30 (mm) | Length × depth × height |
Selecting an 8-Channel Video Optical Multiplexer: How to Choose Between IDM-VDA8200, VDA8040, VDA8440, VDA8402, and VDA8442?
The basis for selecting an 8-channel video optical multiplexer is which service channels are required on site in addition to the 8 video channels: if only video and a small amount of control data need to be backhauled, a different model is required than for on-site intercom or for network data backhaul. All five models provide 8 unidirectional video channels; they differ only in whether data, bidirectional audio, and Ethernet channels are present. As a professional optical multiplexer manufacturer, Raytrans can provide complete product showcase and selection support. The following is a comparison of the channel configurations of these multi-service optical multiplexers.
| Model | Video Channel | Data Channel | Bidirectional Audio | Ethernet | Typical Use |
|---|---|---|---|---|---|
| IDM-VDA8200 | 8 unidirectional video | 2 data | — | — | Video + a small amount of PTZ/speed dome control data |
| IDM-VDA8040 | 8 unidirectional video | — | 4 bidirectional audio | — | Video + intercom between the surveillance center and multiple sites |
| IDM-VDA8440 | 8 unidirectional video | 4 data | 4 bidirectional audio | — | Complete link of video + control + intercom |
| IDM-VDA8402 | 8 unidirectional video | 4 data | — | 2 Ethernet | Video + control + network data backhaul |
| IDM-VDA8442 | 8 unidirectional video | 4 data | 4 bidirectional audio | 2 Ethernet | Aggregation link of video + control + intercom + network |
When the site has only video and one PTZ control channel, IDM-VDA8200 is sufficient; the number of interfaces matches the engineering requirements, and there is no need to reserve margin for service channels that will not be used. When the surveillance center needs bidirectional announcement and intercom with multiple surveillance sites, choose IDM-VDA8040, whose 4 bidirectional audio channels can cover multiple intercom terminals. When a site requires both PTZ control and intercom with the center, choose IDM-VDA8440. When on-site network data (such as access control, alarm host, and network camera) must be backhauled to the center in addition to video, choose IDM-VDA8402 with 2 Ethernet channels; when video, control, intercom, and network data all need to be carried over a single fiber at once, choose IDM-VDA8442. All the above multi-service optical multiplexer models can be used in scenarios such as government private network optical fiber communication solutions. For the specific number of channels, optical module distance, and customized interface requirements, it is recommended to confirm with the manufacturer Raytrans according to the actual project site conditions.
Typical Application Scenarios
Smart Transportation and Expressway Surveillance
The distance from expressway toll stations, tunnel portals, interchanges, and urban intersections to the surveillance center is often several kilometers to 20 km, duct resources along the line are scarce, and laying new coaxial cable is costly. The IDM-VDA8200 series video optical multiplexers connect 8 camera video channels at the site side and restore the output at the central side to monitors, DVRs, or encoding devices, completing the aggregation and upload of 8 video channels over a single optical fiber; the standard 20 km single-mode transmission covers the typical distance between adjacent toll stations, tunnel portals, and the surveillance center, and the 1.25Gbps receive/transmit optical rate leaves bandwidth margin after 8 video channels are multiplexed with data, audio, and Ethernet over the same fiber. SNMP network management allows O&M personnel to see the device status at the remote end from the equipment room, reducing the number of inspections along the line. As mature products from a professional optical multiplexer manufacturer, this series has a large number of product showcases and deployed cases in expressway surveillance projects.
Unattended Stations of Energy and Electric Power
The cameras in substations, distribution rooms, pumping stations, and pipeline valve chambers are far from the main control room, the electromagnetic environment is strong, and the sites are unattended for long periods, placing high demands on the temperature adaptability and power supply flexibility of the equipment. The IDM-VDA8200 series multi-service optical multiplexers use optical fiber as the transmission medium, with electrical isolation between the transmitter and the receiver, which avoids interference from the strong electromagnetic environment on video signals; multiple protection against lightning and surge at the ports further reduces port damage caused by lightning strikes. The industrial-grade wide-temperature model has an operating temperature of -40℃~+85℃, suitable for outdoor unattended cabinets, and supports two power supply modes, AC220V and DC-48V, with overall power consumption ≤6W, so it can directly use the existing direct current power supply at the site.
Industrial Park and Plant Security Private Network
The camera sites at park gates, the perimeter, workshops, and storage areas are scattered; there is often existing trunk optical cable between the plant and the office building, but the number of cores is limited, and new surveillance sites do not want to splice fiber cores again. The IDM-VDA8200 series multi-service optical multiplexers aggregate 8 video channels with data, bidirectional audio, and Ethernet onto a single optical fiber for transmission, so one device replaces the stacking of multiple optical multiplexers; security integrators only need to install one unit at the site side and one at the central side to complete multi-view backhaul of the perimeter and entrances. The device is plug-and-play and requires no on-site electrical or optical adjustment; services can be enabled once power is connected, making it suitable for security private network upgrades in plants with many sites and tight schedules. Raytrans can provide complete government private network optical fiber communication solution support for such projects.
Conclusion
The 1.25Gbps single-fiber 8-channel video optical multiplexer concentrates 8 unidirectional video channels with data, bidirectional audio, and Ethernet services onto a single optical fiber for transmission, so one device replaces the stacking of multiple optical multiplexers; the Raytrans IDM-VDA8200 series multi-service optical multiplexers adopt all-digital uncompressed video technology, with a video SNR ≥70dB and differential gain/phase <0.7, covering long-distance private network backhaul with a 1.25Gbps receive/transmit optical rate and 20 km single-mode transmission, and adapting to outdoor unattended sites in smart transportation, energy and electric power, and industrial parks with an industrial-grade -40℃~+85℃ wide temperature range. When selecting an 8-channel video optical multiplexer for security surveillance and industrial private network projects, the model can be selected from the five models in this series according to the number of service channels at the site, the optical cable type, and the transmission distance; for the specific configuration, confirm with the optical multiplexer manufacturer, or customize a government private network optical fiber communication solution according to actual requirements.
