1-Channel Video Optical Multiplexer
One-touch pre-defined plan, cross-format intercom, graphical status,
The one-channel video series optical multiplexer is a compact optical fiber transmission product for video, data and other service signals, developed by our company using advanced all-digital uncompressed video technology and tailored to the security surveillance market. It can transmit up to 1 channel of unidirectional video, 1 channel of data and 1 channel of bidirectional audio over a single optical fiber. The plug-and-play design makes installation simple and easy, with no on-site adjustment required. Its optical module and core circuits use standard components for high stability, and all optical and electrical interfaces comply with international standards, making it suitable for different operating environments.
IDM-VDA100 single-fiber three-service video optical multiplexer is a single-channel video optical fiber transmission device developed by Beijing Ruiguang Jiyuan Digital Technology Co., Ltd. (Raytrans) using all-digital uncompressed video technology. It is used in pairs (transmitter and receiver) to transmit 1 channel of unidirectional video from a security surveillance site over an optical fiber in real time, and can multiplex 1 channel of data and 1 channel of bidirectional audio over the same optical fiber. As a multi-service optical multiplexer product from the professional optical multiplexer manufacturer Raytrans, this video optical multiplexer samples the video signal output by the camera into a digital signal and sends it directly into the optical channel, and the receiver restores it to video output; the picture is not affected by the loss caused by compression encoding. The plug-and-play design makes installation simple and easy, with no on-site adjustment required. Its optical module and core circuits use standard components, providing high stability. All optical and electrical interfaces comply with international standards and are suitable for different operating environments. This all-digital uncompressed video optical multiplexer can flexibly form security surveillance video optical fiber transmission solutions, and the plug-and-play feature presented in the product showcase also makes engineering deployment more efficient.
Key Specifications at a Glance: 1-channel unidirectional video · 1-channel data multiplexed · 1-channel bidirectional audio multiplexed · video bandwidth 0Hz6.5MHz · video SNR ≥70dB (weighted) · FC single-mode optical port · 20Km single-mode · SNMP network management · industrial-grade wide temperature -40℃+85℃ · overall power consumption ≤6W
Figure 1: Overall appearance of the IDM-VDA100 single-fiber three-service video optical multiplexer main unit — close-up of BNC video port and FC optical port
What Kind of Device Is a Single-Fiber Three-Service Video Optical Multiplexer? All-Digital Uncompressed Transmission Principle
A single-fiber three-service video optical multiplexer is a compact fiber access device that allows 1 channel of video, 1 channel of data and 1 channel of bidirectional audio to share a single optical fiber for transmission. It is used in pairs at both ends, with optical and electrical interfaces designed according to international standards, requiring no electrical or optical adjustment on site. As one of the representative products launched by the professional optical multiplexer manufacturer Raytrans, this device plays a key link role between the front-end image and the back-end center in security surveillance video optical fiber transmission solutions.
All-digital uncompressed video technology means that after the video signal completes A/D sampling at the transmitter, it is transmitted directly in digital form over the optical fiber without compression encoding, and the receiver then performs D/A restoration to output video. This is the method adopted by the single-fiber three-service video optical multiplexer. The distortion specification of the video channel is determined by the sampling bit width and the analog front end, and the picture is not affected by the loss of detail or encoding and decoding latency caused by compression algorithms. Raytrans's all-digital uncompressed video optical multiplexer is designed based on this principle, ensuring that the video optical multiplexer provides broadcast-grade picture quality in security surveillance video optical fiber transmission solutions.
The sampling bit width of the video channel is 8bit, and the video bandwidth is 0Hz~6.5MHz, which can fully carry video signals of formats such as PAL, NTSC and SECAM; the video SNR is ≥70dB (weighted), luminance non-linearity <3%, differential gain (DG) <0.7%, and differential phase (DP) <0.7°. This set of specifications supports the positioning that "video quality can reach broadcast-grade standards." The video interface is BNC, with input/output impedance 75Ω (unbalanced) and input/output voltage 1VP-P (typical value), and can be directly interfaced with the video ports of cameras and monitors. These technical specifications are also an important basis for measuring the performance of a video optical multiplexer in the product showcase.
For the optical link part, the transmitter receive/transmit rate is 84Mbps/155Mbps and the receive/transmit wavelength is 1550nm/1310nm; the receiver receive/transmit rate is 155Mbps/84Mbps and the receive/transmit wavelength is 1310nm/1550nm; the transmit optical power is -15~-8dBm, and the receiver sensitivity is better than -32dBm (1310nm). The difference between these two parameters is the available optical power margin of the link.
What Functions Does the IDM-VDA100 Single-Fiber Three-Service Video Optical Multiplexer Provide?
The functions of the IDM-VDA100 single-fiber three-service video optical multiplexer are divided by service channel and O&M capability. The specific role of each function is shown in the table below. As a multi-service optical multiplexer product from Raytrans, its product showcase covers comprehensive capabilities including video, data, audio and network management.
Function | Description |
|---|---|
1-channel unidirectional video | Provides 1 channel of unidirectional video, using all-digital uncompressed transmission, supporting high-quality transmission of moving and still images, with the picture unaffected by compression encoding loss |
1-channel data | In addition to video, 1 channel of data service can be multiplexed, with an RJ-45 interface, supporting RS-232, RS422 (4-wire) and RS485 (2-wire), used for control of on-site devices such as PTZ and speed domes |
1-channel bidirectional audio | 1 channel of bidirectional audio service can be multiplexed, with audio sampling bit width 16bit, sampling frequency 32KHz, audio bandwidth 20Hz~20KHz and SNR ≥90dB, used for intercom and announcement between the surveillance center and the site |
SNMP network management | Supports SNMP network management, enabling real-time online monitoring of device and service status on the link |
All-digital uncompressed | Video quality can reach broadcast-grade standards, with no compression encoding loss after the picture is transmitted over the optical fiber |
CD-grade audio | Audio quality can reach CD-grade standards, with audio sampling bit width 16bit and sampling frequency 32KHz |
Video format compatibility | Compatible with video formats such as PAL, NTSC and SECAM, adapting to cameras and monitors of different formats |
SMT and port protection | Uses SMT surface mount technology, with ports featuring multiple protection against lightning and surge |
Video lossless regenerative repeater | Supports video lossless regenerative repeater, with no electromagnetic interference (EMI) or radio frequency interference (RFI) |
Transparent data encoding | Uses a transparent data encoding method, compatible with the products of major camera manufacturers |
Adaptive, adjustment-free | Automatically adapts to line conditions, with no on-site electrical or optical adjustment required during use |
Compact design | Compact structure, dimensions 144×138×30mm, flexible and convenient installation |
Differentiated Value of the Single-Fiber Three-Service Video Optical Multiplexer: Fiber Core Savings, Wide-Temperature Tolerance, Network Manageability
The differentiated value of the IDM-VDA100 single-fiber three-service video optical multiplexer is concentrated in four areas: optical fiber resource, transmission distance, environmental adaptability and remote O&M. The corresponding capability and value of each are shown in the table below. For the optical multiplexer manufacturer Raytrans, this multi-service optical multiplexer demonstrates outstanding comprehensive advantages in security surveillance video optical fiber transmission solutions.
Differentiated Selling Points | Corresponding Capability and Specifications | Differentiated Value |
|---|---|---|
Three services over a single fiber | 1 channel of unidirectional video, 1 channel of data and 1 channel of bidirectional audio multiplexed over a single optical fiber | A single fiber simultaneously carries 1 channel of video + 1 channel of data + 1 channel of bidirectional audio, saving fiber cores: only one optical fiber needs to be laid on site to backhaul surveillance images, control data and intercom voice, reducing optical cable core usage and associated construction investment |
20Km single-mode | Single-mode fiber, FC optical port, transmit optical power -15~-8dBm | Receiver sensitivity better than -32dBm, single-mode transmission over 20Km, optional long-distance module: conventional sites are directly connected over a single fiber within 20Km with no repeater in between; beyond that distance, a long-distance optical module can be installed to extend the reach |
Industrial-grade wide temperature | Industrial-grade operating temperature and non-condensing humidity conditions | Industrial-grade -40℃ |
SNMP network management | Supports SNMP network management and real-time online monitoring | Supports SNMP network management for real-time online monitoring; private network O&M personnel can view optical link and service status from the central side, reducing site-by-site on-site inspection |
Technical Specifications of the Single-Fiber Three-Service Video Optical Multiplexer: Optical Interface, Video, Audio and Data
Optical Interface Parameters
Item | Parameter/Specification | Description/Applicable Conditions |
|---|---|---|
Interface type | FC (SC and others can be customized) | Optical port connector type, customizable according to the project's 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 | 155Mbps/84Mbps | 155Mbps in the receive direction, 84Mbps in the transmit direction |
Receiver receive/transmit wavelength | 1310nm/1550nm | Used in pair with the wavelength of the transmitter at the opposite end |
Transmitter receive/transmit rate | 84Mbps/155Mbps | 84Mbps in the transmit direction, 155Mbps in the receive direction |
Transmitter receive/transmit wavelength | 1550nm/1310nm | Used in pair with the wavelength of the receiver at the opposite end |
Transmit optical power | -15~-8dBm | Transmit optical power range |
Receiver sensitivity | Better than -32dBm (1310nm) | Used to determine the available optical power margin of the link |
Transmission distance | 20Km; a long-distance optical module can be installed for longer-distance optical fiber transmission | Based on the 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 distortion specification |
Differential phase (DP) | <0.7° | Chroma phase distortion specification |
Differential gain (DG) | <0.7% | Chroma gain distortion specification |
Input overload voltage | 1.5VP-P (typical) | Permissible overload level at the video input |
Input/output voltage | 1VP-P (typical) | Standard video signal level |
Input/output impedance | 75Ω (unbalanced) | Matches the impedance of conventional video coaxial cable |
Video SNR | ≥70dB (weighted) | Weighted SNR specification |
High-Fidelity Audio Channel Parameters
Item | Parameter/Specification | Description/Applicable Conditions |
|---|---|---|
Interface type | RJ45 connector | 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 | The input and output impedances differ; connect according to the port markings |
Input/output voltage | 1.5VP-P (typical) | Audio signal level |
Audio bandwidth | 20Hz~20KHz | Covers the frequency band of human voice and conventional audio services |
Audio SNR | ≥90dB | Audio channel SNR 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 |
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 and site |
Overall power consumption | ≤6 W | 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 | -40℃ ~ +85℃ | Industrial-grade temperature range configuration, suitable for unattended field cabinets |
Relative humidity | 0~95% (non-condensing) | Humidity conditions of the operating environment |
Product dimensions | 144×138×30 (mm) | Length × depth × height |
Single-Channel Video Optical Multiplexer Selection: How to Configure IDM-VDA100, IDM-VDA110 and IDM-VDA111?
The basis for selecting a single-channel video optical multiplexer is the number of services that need to be transmitted simultaneously on site: if only video needs to be sent back, choose the 1-channel unidirectional video configuration; if PTZ and speed dome control is also required, add 1 data channel; if two-way intercom between the center and the site is needed, add 1 bidirectional audio channel. Raytrans IDM-VDA100 single-fiber three-service video optical multiplexers distinguish service combinations by model, and the specific correspondence is shown in the table below. As a professional optical multiplexer manufacturer, Raytrans provides a complete product showcase and consulting on security surveillance video optical fiber transmission solutions.
Service requirement | Corresponding model and configuration | Typical Use |
|---|---|---|
Only 1 video channel sent back | IDM-VDA100, 1-channel unidirectional video | Surveillance sites that only need to upload video |
PTZ and speed dome control in addition to video | IDM-VDA110, 1-channel unidirectional video + 1 data channel | Video + PTZ or speed dome control data |
On-site intercom in addition to video and control | IDM-VDA111, 1-channel unidirectional video + 1 data channel + 1 bidirectional audio channel | Complete single-fiber three-service link |
In addition to the number of service channels, selection also requires checking three on-site conditions: the link length is calculated on a 20Km single-mode basis, and a long-distance optical module is optional when it is exceeded; if the installation location is an outdoor cabinet or an equipment room without air conditioning, choose the industrial-grade -40℃~+85℃ wide-temperature configuration; power supply is selected between DC -48 V and AC 220 V according to the DC distribution panel at the substation or the AC conditions of the equipment room. Raytrans IDM-VDA series multi-service optical multiplexers adopt all-digital uncompressed video optical multiplexer technology, and a single fiber can carry three types of services—video, audio and data—making them suitable for various security surveillance video optical fiber transmission solutions.
Typical Application Scenarios
Industrial Security Surveillance Private Network
In an industrial security surveillance private network, camera sites are scattered across plants, industrial parks and oil and gas stations. The distance from the sites to the surveillance center often exceeds the usable range of coaxial cable and twisted pair, while duct space and optical cable cores are very limited. The IDM-VDA100 single-fiber three-service video optical multiplexer connects to the camera on the site side and uses a single optical fiber to send 1 video channel together with PTZ control data and on-site intercom voice back to the surveillance center. The transmitter and receiver are electrically isolated, with no electromagnetic interference (EMI) or radio frequency interference (RFI), so the picture is not easily affected by variable-frequency equipment and power cables. It uses SMT surface-mount technology and multiple protection against lightning and surge on ports, making it suitable for industrial sites with a complex electromagnetic environment, and it also provides a reliable product showcase for security surveillance video optical fiber transmission solutions.
Unattended Sites in Electric Power and Rail Transit
The cabinets at substations, switching stations and rail transit stations along the line are unattended all year round, with high temperatures inside the cabinet in summer and low temperatures in winter, and on-site power supply access conditions are not uniform. The IDM-VDA100 single-fiber three-service video optical multiplexer operates over a wide temperature range of -40℃+85℃ and can be used at a relative humidity of 095% (non-condensing), suitable for outdoor cabinets and equipment rooms without air conditioning; its overall power consumption is ≤6 W, and with DC -48 V power supply it can directly draw power from the station DC distribution panel, while AC sites can choose AC 220 V. The device supports SNMP network management, so private network O&M personnel can monitor the optical link and service status in real time online from the central side, and failures need not wait until personnel arrive on site to be discovered.
Field Pipeline and Border and Coastal Defense Surveillance
Surveillance sites for oil and gas pipelines, water conservancy channels and border and coastal defense are far from the center and are maintained infrequently. Once the link is interrupted, manual on-site troubleshooting takes a long time. Border and coastal defense video surveillance optical multiplexers need to operate for the long term in the field without repeaters and without mains power. The IDM-VDA100 single-fiber three-service video optical multiplexer directly connects the site to the center with single-mode 20Km transmission, and its receiver sensitivity better than -32 dBm leaves link margin, reducing one level of repeater and routing and switching, so points of failure are reduced accordingly; when the link is longer, a long-distance optical module can be optionally installed to extend it. With its compact 144×138×30 mm body, it is easy to install in field cabinets and mounting pole equipment boxes.
Figure 2: Networking diagram of a single-fiber three-service video optical multiplexer in an unattended field cabinet with cameras and fiber access
Video plus Data: PTZ and Speed Dome Control Link
In addition to 1 video channel, the IDM-VDA100 single-fiber three-service video optical multiplexer can combine 1 data channel, with an interface type of RJ45 connector, supporting RS-232, RS-422 (4-wire) and RS-485 (2-wire). In security engineering, the surveillance center issues control commands to on-site PTZ units, speed domes and decoders through this data channel, and video and control are transmitted synchronously over one optical fiber, so no separate control cable needs to be laid on site.
Video plus Bidirectional Audio: On-Site Intercom and Announcement
In addition to video and data, the IDM-VDA100 single-fiber three-service video optical multiplexer can also combine 1 bidirectional audio channel, with an audio sampling bit width of 16bit, a sampling frequency of 32KHz, an audio bandwidth of 20Hz~20KHz and a signal-to-noise ratio (SNR) of ≥90dB, so the audio quality can reach CD-grade standards. This configuration is suitable for scenarios requiring two-way calls between the surveillance center and the site, such as remote announcement and intercom at platforms, gatehouses and unattended equipment rooms.
How Far Can a Video Optical Multiplexer Transmit? Transmission Distance and Fiber Configuration
The standard transmission distance of the single-fiber three-service video optical multiplexer is 20Km, based on single-mode fiber, 1310nm/1550nm wavelengths and an FC optical port; when the project requires a longer distance, a long-distance optical module can be optionally installed to achieve longer-distance optical fiber transmission. To determine whether a link is usable, compare the transmit optical power of the transmitter (-15~-8dBm) with the receiver sensitivity (better than -32dBm) to calculate the available optical power margin; in actual projects, optical fiber attenuation, splice point and mating connector loss should also be taken into account and calculated section by section.
Both the fiber mode and the interface type affect link configuration: single-mode is the conventional configuration and multi-mode is optional, and the choice must be consistent with the optical modules at both ends and the optical fiber already laid on site; the optical interface type is FC (SC and other interfaces can be customized), and if the project uses SC patch cords or optical cable termination methods, customization is available at the time of ordering as required.
How to Wire a Video Optical Multiplexer? BNC, RJ45 and Optical Port Connections
Wiring of the single-fiber three-service video optical multiplexer is completed under the factory configuration, and on site you only need to connect service cables according to the port markings, with no on-site electrical or optical adjustment required. In terms of wiring sequence, first connect service devices such as cameras and monitors to the corresponding ports, then connect the optical fiber patch cord, next check the power supply mode, and finally switch on the power. This reduces the risk of end face contamination caused by repeatedly plugging or unplugging the optical port.
Port | Connected to | Wiring key points |
|---|---|---|
BNC video port | Camera / monitor | 75 Ω unbalanced, input/output voltage 1 VP-P (typical), use a 75 Ω video coaxial cable |
RJ45 data port | PTZ controller / control keyboard / decoder | Select RS-232, RS-422 (4-wire) or RS-485 (2-wire) wiring according to the interface type of the device |
RJ45 audio port | Intercom microphone / speaker | Input impedance ADC: 100 KΩ, output impedance DAC: 10 KΩ; connect according to the port markings |
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 | Optional according to the power supply conditions of the equipment room and site; overall power consumption ≤6W |
Conclusion
The IDM-VDA100 single-fiber three-service video optical multiplexer carries 1 channel of unidirectional video over a single fiber and, depending on the model, adds 1 data channel and 1 bidirectional audio channel, aggregating surveillance video, PTZ control and on-site intercom onto the same fiber core. The single-fiber three-service video optical multiplexer adopts all-digital uncompressed video technology, with video quality reaching broadcast-grade standards and audio quality reaching CD-grade standards; a receiver sensitivity better than -32dBm supports 20Km single-mode transmission, while industrial-grade wide temperature and SNMP network management ensure long-term operation of unattended sites. As a professional optical multiplexer manufacturer, Raytrans provides multi-service optical multiplexer product showcase and security surveillance video optical fiber transmission solutions; for specific service combinations, optical module distance and interface customized requirements, confirm with the manufacturer based on the on-site project conditions.
