IDM-VDA8200 Series 8-Channel Video Digital Multiplexing Optical Multiplexer
Single-Fiber 8-Channel Video, 4-Channel Data, 4-Channel Bidirectional Audio, 2-Channel Ethernet, Multiple Services over One Fiber
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 channels of unidirectional video, 4 channels of data, 4 channels of bidirectional audio, and 2 channels of Ethernet over a single optical fiber, meeting various user requirements. It adopts internationally advanced all-digital uncompressed video technology, as well as advanced technologies such as time division multiplexing and wavelength division multiplexing, to transmit eight channels of video and multiple channels of bidirectional audio and data information over optical fiber in real time, synchronously, without distortion, and with high quality. Its high-quality video performance and bidirectional data transmission can meet various user requirements, and the plug-and-play design makes installation...
The IDM-VDA8200 Series single-fiber 8-channel video optical multiplexer is a compact multi-service optical multiplexer 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 unidirectional video channels from surveillance sites together with data, bidirectional audio, and Ethernet services onto a single optical fiber for real-time synchronous transmission. These 8-channel video optical multiplexers use all-digital uncompressed video technology and, by means of time division multiplexing (TDM) and wavelength division multiplexing (WDM), transmit eight video channels plus multiple bidirectional audio and data signals over the optical fiber in real time, synchronously, without distortion, and with high quality. The plug-and-play design makes installation simple and easy, with no on-site adjustment required. The optical module and core circuits use standard components for high stability, and all optical and electrical interfaces comply with international standards, making the equipment suitable for different operating environments. As a professional optical multiplexer manufacturer, Raytrans offers a product showcase covering video optical multiplexers, multi-service optical multiplexers, and other series, widely used in scenarios such as government private network optical fiber communication solutions and military emergency communications vehicle solutions.
Key Specifications at a Glance: 8 unidirectional video · 4 data · 4 bidirectional audio · 2 Ethernet · single-mode fiber (multimode optional) · FC optical port (SC customizable) · 20 km transmission · industrial grade -40℃~+85℃ · overall power consumption ≤6 W · dimensions 240×138×30 mm
Figure 1: IDM-VDA8200 single-fiber 8-channel video optical multiplexer main unit appearance with BNC video interface and FC optical port close-up
What kind of equipment is the single-fiber 8-channel video optical multiplexer?
The IDM-VDA8200 Series single-fiber 8-channel video optical multiplexer 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, and the receiver restores and outputs them at the central side. A single optical fiber can simultaneously carry 8 unidirectional video channels, 4 data channels, 4 bidirectional audio channels, and 2 Ethernet services. As part of the product showcase of the professional optical multiplexer manufacturer Raytrans, this series of video optical multiplexers has a broad application base in the security surveillance field.
Traditional surveillance sites use coaxial cable to transmit video; once the distance exceeds a few hundred meters, a repeater amplifier must be added, and the signal is also susceptible to electromagnetic interference and ground potential difference, with image quality degrading over distance. These 8-channel video optical multiplexers transmit video signals over the optical fiber in an all-digital uncompressed manner, with a standard configuration of 20 km transmission and an optional long-distance optical module for longer-distance optical fiber transmission. At the same time, they are free from electromagnetic interference (EMI) and radio frequency interference (RFI), making them suitable for security surveillance projects with scattered sites located from hundreds of meters to tens of kilometers from the center. Whether for a government private network optical fiber communication solution or a military emergency communications vehicle solution, this optical multiplexer can serve as the core transmission device for front-end video input.
How many video channels can one optical fiber carry? Single-fiber 8-channel video and multi-service over one line
How many video channels one optical fiber can carry depends on the upper limit of video channels of the selected model. The IDM-VDA8200 Series single-fiber 8-channel video optical multiplexer supports 8 unidirectional video channels over one optical fiber and can overlay 4 data channels, 4 bidirectional audio channels, and 2 Ethernet services on top of the video. This combination is the full configuration of the series, fully demonstrating the integration advantages of a multi-service optical multiplexer.
The number of video channels, data channels, and audio channels share the bandwidth resources of the same optical link. During selection, the model should correspond to the actual number of services on site, and it is not advisable to calculate based on a single criterion. Sites requiring control data for pan-tilt units and dome cameras use data channels; sites requiring intercom between the center and the field use bidirectional audio channels; sites requiring backhaul of network camera, access control, or alarm host data use the 2 Ethernet channels. Combining the three as needed enables multi-service over one line. As an experienced optical multiplexer manufacturer, Raytrans can provide targeted optical multiplexer selection recommendations based on the actual requirements of a government private network optical fiber communication solution or a military emergency communications vehicle solution.
Differentiated value of the IDM-VDA8200 Series
| Differentiation Point | Practical significance for customers |
|---|---|
| Single fiber carrying 8 video + 4 data + 4 bidirectional audio + 2 Ethernet, multi-service over one line | One optical fiber simultaneously replaces multiple video coaxial cables and data cables. Security integrators only need to lay one fiber from the surveillance site to the center, eliminating aggregation equipment and cable tray space added separately for Ethernet and audio |
| Industrial-grade -40℃~+85℃ wide temperature operation, suitable for outdoor unattended cabinets | Outdoor enclosures, pole-side cabinets, and unattended sites can operate continuously under high summer temperatures and severe winter cold, covering on-site temperature ranges beyond the conventional model's -15℃~+65℃ |
| Multiple port protection against lightning and surge, more reliable impact resistance for private network links | SMT surface mount technology and multiple port protection against lightning and surge reduce port damage and repair frequency caused by lightning strikes and surges, making long-link private networks in power, rail transit, and other sectors more stable |
What functions does the IDM-VDA8200 Series provide?
| Function | Description |
|---|---|
| SNMP network management | Supports SNMP network management for real-time online monitoring of the operating status of devices on the link |
| Video quality | Video quality reaches broadcast-grade standards, with 8 video channels transmitted synchronously without compression |
| Audio quality | Audio quality reaches CD-grade standards, with audio sampling bit width of 16 bit and sampling frequency of 32 KHz |
| 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, multiple port protection against lightning and surge |
| 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 repeating |
| 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 design for reliable and flexible equipment, compact structure, and flexible and convenient installation |
As a professional optical multiplexer manufacturer, Raytrans has verified this multi-service optical multiplexer in its product showcase across multiple fields such as government private network optical fiber communication solutions and military emergency communications vehicle solutions, and the stability and multi-service carrying capability of its video optical multiplexers have won broad customer recognition.
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 (multimode optional) | Single-mode is the standard configuration; multimode is optional |
| Receiver receive/transmit rate | 1.25 G bps / 1.25 G bps | Receive direction and transmit direction rates |
| Receiver receive/transmit wavelength | 1310 nm / 1550 nm | Used in pair with the wavelength of the opposite transmitter |
| Transmitter receive/transmit rate | 1.25 G bps / 1.25 G bps | Transmit direction and receive direction rates |
| Transmitter receive/transmit wavelength | 1550 nm / 1310 nm | Used in pair with the wavelength of the opposite receiver |
| Transmit optical power | -9~-1 dBm | Output optical power range of the transmitter |
| Receiver sensitivity | Better than -21 dBm (1310 nm) | Used when determining the optical power margin of the link |
| Transmission distance | 20 km; an optional long-distance optical module enables 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 | 8 bit | A/D sampling precision |
| Video bandwidth | 0 Hz~6.5 MHz | 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 | 1.5 VP-P (typical) | Permissible overload level at the video input |
| Input/output voltage | 1 VP-P (typical) | Standard video signal level |
| Input/output impedance | 75 Ω (unbalanced) | Consistent with the impedance of conventional video coaxial cables |
| Video SNR | ≥70 dB (weighted) | Weighted signal-to-noise ratio specification |
High-Fidelity Audio Channel Parameters
| Item | Parameter/Specification | Description/Applicable Conditions |
|---|---|---|
| Interface type | RJ45 | Audio input/output connector |
| Audio sampling bit width | 16 bit | A/D and D/A sampling precision |
| Audio sampling frequency | 32 KHz | Audio sampling clock |
| Input/output impedance | ADC: 100 KΩ / DAC: 10 KΩ | Input and output impedances differ; connect according to port markings |
| Input/output voltage | 1.5 VP-P (typical) | Audio signal level |
| Audio bandwidth | 20 Hz~20 KHz | Covers voice and conventional audio service frequency bands |
| Audio SNR | ≥90 dB | Audio channel signal-to-noise ratio specification |
| Total harmonic distortion | <1% | Audio non-linear 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 | 10 M/100 M adaptive | Auto-negotiation with the peer network device |
| Standard protocol | Supports IEEE 802.3 | Ethernet standard protocol |
| Operating mode | Full/half duplex/adaptive | Automatically matched to the peer port capability |
Power Supply, Environmental and Structural Parameters
| Item | Parameter/Specification | Description/Applicable Conditions |
|---|---|---|
| Power supply mode | AC 220 V / DC -48 V | Selected according to the power supply conditions of the equipment room or site |
| Overall power consumption | ≤6 W | Power consumption of a single-end device |
| Operating temperature | -15℃ ~ +65℃ | Operating temperature range of the conventional model |
| Storage temperature | -25℃ ~ +75℃ | Storage temperature in non-operating state |
| Industrial-grade temperature | -40℃ ~ +85℃ | Operating temperature range of the industrial-grade wide-temperature model |
| Relative humidity | 0~95% (non-condensing) | Humidity conditions of the operating environment |
| Product dimensions | 240×138×30 (mm) | Length × depth × height |
8-channel video optical multiplexer selection: how to choose among IDM-VDA8200, VDA8040, VDA8440, VDA8402, and VDA8442?
The basis for selecting an 8-channel video optical multiplexer is which service channels are needed on site in addition to the 8 video channels: whether only video and a small amount of control data need to be backhauled, whether on-site intercom is needed, or whether network data needs to be backhauled — each corresponds to a different model. The five models in the same series use the same optical platform and video specifications, and all have 8 unidirectional video channels; the only difference lies in the presence or absence of data, bidirectional audio, and Ethernet channels. As a professional optical multiplexer manufacturer, Raytrans offers this series of products to meet the diverse product showcase needs of video optical multiplexers and multi-service optical multiplexers.
| Model | Video channel | Data channel | Bidirectional audio | Ethernet | Typical Use |
|---|---|---|---|---|---|
| IDM-VDA8200 | 8-channel unidirectional video | 2-channel data | — | — | Video + a small amount of PTZ/speed dome control data |
| IDM-VDA8040 | 8-channel unidirectional video | — | 4-channel bidirectional audio | — | Video + intercom between the surveillance center and multiple sites |
| IDM-VDA8440 | 8-channel unidirectional video | 4-channel data | 4-channel bidirectional audio | — | Complete link of video + control + intercom |
| IDM-VDA8402 | 8-channel unidirectional video | 4-channel data | — | 2-channel Ethernet | Video + control + network data backhaul |
| IDM-VDA8442 | 8-channel unidirectional video | 4-channel data | 4-channel bidirectional audio | 2-channel Ethernet | Converged link of video + control + intercom + network |
When the site only has video and one channel of PTZ control, 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; its 4-channel bidirectional audio can cover multiple intercom terminals. When a site has 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) also needs to be backhauled to the center in addition to video, choose IDM-VDA8402 with 2-channel Ethernet; when video, control, intercom, and network data all need to be carried over a single fiber at once, choose IDM-VDA8442. This series of optical multiplexers is also suitable for scenarios such as government private network optical fiber communication solutions and military emergency communications vehicle solutions. For specific number of channels, optical module distance, and interface customization requirements, it is recommended to confirm with the manufacturer according to the project site conditions.
Typical Application Scenarios
Multi-channel video aggregation over a security surveillance private network
The sites of a security surveillance private network in plants, industrial parks, roads, and mining areas are scattered. A single site often needs to backhaul multiple channels of camera video, and is often hundreds of meters to tens of kilometers away from the surveillance center. Laying new coaxial cables is costly and offers poor anti-interference capability. As a professional optical multiplexer manufacturer, Raytrans offers the IDM-VDA8200 series single-fiber eight-video optical multiplexer, which connects 8 channels of camera video on the site side and restores the output to monitors, DVRs, or encoding devices on the central side, completing the aggregation and upload of 8 channels of video over a single optical fiber. The 20Km transmission distance covers most campus and road surveillance links, and SNMP network management allows O&M personnel to see the device status at the remote end from the equipment room, reducing on-site visits for inspection. It is a typical video optical multiplexer application in the security surveillance field in the product showcase.
Unattended sites in electric power and energy
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, which places high demands on the temperature adaptability and power supply flexibility of the equipment. The IDM-VDA8200 series single-fiber eight-video optical multiplexer uses optical fiber as the transmission medium, providing electrical isolation between the transmitter and the receiver and avoiding the interference of a strong electromagnetic environment with video signals. Its industrial-grade -40℃~+85℃ wide temperature operation adapts to unattended cabinets in the field, and it supports both AC220V and DC-48V power supply modes with overall power consumption ≤6W, so it can directly use the existing DC power supply at the site.
Monitoring in rail transit and expressway electromechanical systems
The sites of electromechanical monitoring systems along rail transit lines, on platforms, and on expressways are distributed along the line, with long links and many grounding points, which easily introduces lightning and surge impacts. The IDM-VDA8200 series single-fiber eight-video optical multiplexer supports video lossless regenerative repeater, allowing long links to be organized section by section without introducing additional compression loss. With multiple protection against lightning and surge at the ports, the private network link is more reliable against impacts. Combined with SMT surface mount technology and no electromagnetic interference, it is suitable for long-term operation in cabinets along the line.
How do port lightning and surge protection work in a video optical multiplexer?
The port lightning protection of a video optical multiplexer discharges the lightning and surge energy that enters the equipment along video cables, data cables, power cables, and optical fibers, preventing impacts from directly damaging the ports and core circuits. The IDM-VDA8200 series single-fiber eight-video optical multiplexer provides multiple protection against lightning and surge at the ports and uses SMT surface mount technology, making component consistency and connection reliability more stable.
In engineering practice, field cabinets and cabinets along the line should also be grounded and equipotentially bonded in accordance with on-site lightning protection specifications, treating the equipment enclosure, cabinet, and optical cable strength member as part of the same grounding system. The optical fiber itself is non-conductive, and the lightning strike risk on the optical port side mainly comes from the metal strength member of the optical cable and the cabling in the cabinet. Proper grounding measures can further reduce the probability of port damage.
How is video backhaul deployed at unattended sites in the field?
The deployment of video backhaul at unattended sites in the field focuses on three points: wide temperature, power supply, and remote manageability. The IDM-VDA8200 series single-fiber eight-video optical multiplexer supports an industrial-grade operating temperature of -40℃+85℃ and a relative humidity of 095% (non-condensing), supports both AC220V and DC-48V power supply modes with overall power consumption ≤6W, and supports SNMP network management and adaptive, adjustment-free operation. No on-site electrical or optical commissioning is required on the site side to enable services.
| Port | Connected to | Wiring key points |
|---|---|---|
| BNC video port | Camera/monitor | 75 Ω unbalanced, input/output voltage 1VP-P (typical), use 75 Ω video coaxial cable |
| RJ-45 data port | PTZ controller/control keyboard/decoder | Select RS-232, RS422 (4-wire), or RS485 (2-wire) wiring according to the device interface type |
| RJ45 audio port | Intercom microphone/speaker | Input impedance ADC:100KΩ, output impedance DAC:10KΩ, connect according to port markings |
| RJ-45 Ethernet port | Network camera/switch | 10M/100M adaptive, full/half duplex adaptive |
| FC optical port | Optical fiber patch cord/optical cable | Single-mode (multi-mode optional), SC and other interface types can be customized, note the wavelength pairing at the transmit and receive ends |
| Power port | AC220V/DC-48V | Select according to the power supply conditions at the site, overall power consumption ≤6W |
For the wiring sequence, first connect service devices such as cameras and monitors to the corresponding ports, then connect the optical fiber patch cord, and finally turn on the power. This reduces the risk of end face contamination caused by repeatedly plugging and unplugging the optical port.
Conclusion
The IDM-VDA8200 series single-fiber eight-video optical multiplexer concentrates 8-channel unidirectional video and data, bidirectional audio, and Ethernet services onto a single optical fiber for transmission. It uses all-digital uncompressed video technology to ensure broadcast-grade picture quality, comes with a standard configuration of 20Km transmission and overall power consumption ≤6W, and adapts to security surveillance private networks, unattended sites in electric power and energy, and rail transit and expressway electromechanical systems with its industrial-grade -40℃~+85℃ wide temperature and port lightning and surge protection capabilities. As a multi-service optical multiplexer product offered by Raytrans for government private network optical fiber communication solutions and military emergency communications vehicle solutions, security surveillance and industrial private network projects selecting an 8-channel video optical multiplexer can choose the corresponding model from the five models in this series according to the number of service channels at the site, optical cable type, and transmission distance. For specific configurations, confirm with the manufacturer.
