IDM-VNT8416 Multi-Service Video Optical Multiplexer
8-channel video, 4-channel E1 plus 4-channel Fast Ethernet over a single fiber, 20 km single-fiber, 40℃ wide temperature
The IDM-VNT8416 multi-service video optical multiplexer is a high cost-performance product from our company that adopts internationally advanced digital video optical fiber transmission technology to multiplex video signals, 64 kbit/s services such as voice or data, E1 services, high-fidelity audio services, and 100M Ethernet over optical fibers for high-quality transmission;
The IDM-VNT8416 20 km single-fiber wide-temperature multi-service optical multiplexer is a multi-service video optical multiplexer developed by Beijing Ruiguang Jiyuan Digital Technology Co., Ltd. (Raytrans) using digital video optical fiber transmission technology. It multiplexes video signals, 64 kbit/s services such as voice or data, E1 services, high-fidelity audio services, and 100M Ethernet over a single optical fiber for high-quality transmission. This model is the IDM-VNT8416. As a typical multi-service optical multiplexer product showcase, the core value of the 20 km single-fiber wide-temperature multi-service optical multiplexer is to let a pair of optical fibers simultaneously carry four types of services—video surveillance, dispatch voice, E1 leased lines, and network backhaul—converging transmission tasks that previously required multiple single-function devices stacked together onto one device, reducing the number of devices at a site, optical cable cores occupied, and associated construction investment. For subdivided categories such as video optical multiplexers and telephone optical multiplexers, this multi-service convergence capability is precisely the direction that optical multiplexer manufacturers continue to pursue in government private network optical fiber communication solutions and smart mining communication solutions.
Key Specifications at a Glance: 8-channel video · 4-channel E1 transparent transmission · 4-channel shared 100M Ethernet · 4 groups high-fidelity audio · 1.5 Gbps single-mode FC optical port · 20 km single fiber · industrial grade -40℃ to +85℃ · overall power consumption ≤40W
What kind of equipment is the 20 km single-fiber wide-temperature multi-service optical multiplexer
The 20 km single-fiber wide-temperature multi-service optical multiplexer is an industrial-grade fiber access device that multiplexes multiple channels of video, E1 channels, voice/data, and Ethernet onto a single optical fiber for transmission. It is used in pairs at both ends, with optical and electrical interfaces designed to international standards, requiring no on-site adjustment. All-digital video optical fiber transmission allows video signals to enter the optical channel without analog frequency, phase, or amplitude modulation, so there is no intermodulation interference common to analog optical multiplexers, nor electromagnetic interference (EMI) or radio frequency interference (RFI). The picture is clean and services are stable; the optical module and core circuits all use standard components, suitable for different operating environments.
The device simultaneously carries 8-channel video (unidirectional or bidirectional flexibly configured according to user requirements), 4-channel E1 transparent transmission, 4-channel shared 100M Ethernet, and 4 groups of high-fidelity audio services over a single optical fiber, and can also connect to 64 kbit/s low-speed services such as voice or data. This multiplexing approach allows a site to lay just one optical fiber and deliver video surveillance, dispatch voice, E1 leased lines, and data backhaul to the central equipment room at once: video for on-duty personnel to view the site, E1 for existing leased-line access, 100M Ethernet for network cameras or office data, and high-fidelity audio for intercom and PA backhaul. As a mature product from a professional optical multiplexer manufacturer, this multi-service optical multiplexer from Raytrans is widely used in government private network optical fiber communication solutions and smart mining communication solutions, with a single device completing all service access capabilities covered by the complete product showcase.
Figure 1: Close-up of the IDM-VNT8416 multi-service video optical multiplexer chassis front panel with FC optical ports, BNC video ports, and operating indicator LEDs
Core Functions: One device multiplexes video, E1, Ethernet, and audio into a single optical fiber
The IDM-VNT8416 20 km single-fiber wide-temperature multi-service optical multiplexer performs multiplexing and transmission of video, E1, Ethernet, audio, and low-speed services on one device. The core functions are shown in the table below.
| Function | Description |
|---|---|
| Multi-channel video input | 8-channel video input, unidirectional or bidirectional flexibly configured according to user requirements, compatible with PAL, NTSC, SECAM and other video formats |
| E1 transparent transmission channel | 4-channel E1 transparent transmission, bit rate 2048 Kbps, HDB3 line code, compliant with ITU-T G.703, capable of carrying existing leased-line access |
| Shared 100M Ethernet | 4-channel shared 100M Ethernet, interface type RJ-45, transmission rate 10M/100M adaptive, compliant with IEEE802.3 |
| High-fidelity audio | 4 groups of high-fidelity audio services, audio bandwidth 20 Hz to 20 KHz, audio SNR ≥90 dB |
| Voice and low-speed data | Can connect to 64 kbit/s services such as voice or data, with expansion voice interface cards (FXS, FXO, hotline telephone card, magneto telephone card, EM2/4 card) and data service cards (V.24, V.35) |
| Single-fiber multiplexing | Video, E1, Ethernet, and audio share a single optical fiber, reducing optical cable cores occupied and the number of devices at a site |
| Wide-temperature industrial design | Industrial-grade operating temperature -40℃ to +85℃, relative humidity 0 to 95% (non-condensing), suitable for unattended sites in the field |
Technical Specifications: Optical interface, video, Ethernet, and audio parameters
The interfaces and specifications of the IDM-VNT8416 20 km single-fiber wide-temperature multi-service optical multiplexer are listed by service category. The optical and electrical ends are used in pairs. Specific configurations are subject to the manufacturer's technical documentation and commercial confirmation.
Optical Interface and Transmission Distance
| Item | Parameter/Specification | Description/Applicable Conditions |
|---|---|---|
| Interface type | FC (SC and other interfaces can be customized) | Optical patch cord interface selected according to on-site optical cable termination method |
| Fiber mode | Single-mode (multimode optional) | 20 km single-mode transmission configuration |
| Receiver receive/transmit rate | 1.5 Gbps/1.5 Gbps | 1.5 Gbps optical interface |
| Receiver receive/transmit wavelength | 1310 nm/1550 nm | Dual-wavelength pairing for receive and transmit |
| Transmitter receive/transmit rate | 1.5 Gbps/1.5 Gbps | 1.5 Gbps optical interface |
| Transmitter receive/transmit wavelength | 1550 nm/1310 nm | Paired with the remote end wavelength |
| Transmit optical power | -9 to -1 dBm | Available optical power at the transmit side |
| Receiver sensitivity | Better than -21 dBm | Available optical power at the receive side |
| Transmission distance | 20 km | Long-distance optical modules can be optionally installed for longer-distance optical fiber transmission |
Video Interface
| Item | Parameter/Specification | Description/Applicable Conditions |
|---|---|---|
| Interface type | BNC | 75 Ω unbalanced video interface |
| Video sampling bit width | 8 bit | All-digital sampling |
| Video bandwidth | 0 Hz to 6.5 MHz | Covers standard-definition video signal bandwidth |
| Luminance non-linearity | <3% | Picture luminance distortion specification |
| Differential phase (DP) | <0.7° | Chrominance signal phase distortion specification |
| Differential gain (DG) | <0.7% | Chrominance signal amplitude distortion specification |
| Input overload voltage | 1.5 VP-P (typical) | Input-side protection margin |
| Input/output voltage | 1 VP-P (typical) | Standard video level |
| Input/output impedance | 75 Ω (unbalanced) | Consistent with cameras and display devices |
| Video SNR | ≥70 dB (weighted) | Reflects picture noise level |
Ethernet, Audio, Data, Power, and Environment
| Item | Parameter/Specification | Description/Applicable Conditions |
|---|---|---|
| Ethernet interface | RJ-45, 10M/100M adaptive | Supports IEEE802.3, full/half duplex/adaptive |
| Telephone interface (FXO/FXS) | Audio range 300 Hz to 3400 Hz, compression ITU G.711 A-law | Impedance three-element complex impedance 200 Ω+560 Ω//0.1 μF, loop current 25 mA per channel |
| High-fidelity audio | Interface RJ45, sampling bit width 24 bit, sampling frequency 32 KHz | Audio SNR ≥90 dB, bandwidth 20 Hz to 20 KHz, total harmonic distortion <1% |
| Data interface | RJ-45, RS-232, RS422 (4-wire), RS485 (2-wire) | Connects to on-site control and acquisition terminals |
| Power supply mode | AC 220 V/DC -48 V/DC 9 V | Power from equipment rooms, private network cabinets, and field storage batteries |
| Overall power consumption | ≤40W | Low energy consumption for long-term online operation |
| Operating temperature | -15℃ to +65℃ | Conventional equipment room and equipment box environments |
| Industrial grade | -40℃ to +85℃ | Wide-temperature configuration, suitable for field and harsh environments |
| Storage temperature | -25℃ to +75℃ | Warehousing and transportation environment |
| Relative humidity | 0 to 95% (non-condensing) | Applicable condition for high-humidity environments is non-condensing |
| Product dimensions | 440×230×45 (mm, Length×Depth×Height) | Standard chassis structure, easy for cabinet installation |
Figure 2: Layout of service interfaces and power supply terminals on the rear panel of the IDM-VNT8416 multi-service video optical multiplexer
Differentiated Value: 20 km single fiber, industrial-grade wide temperature, 70 dB SNR, and ≤40W power consumption
The IDM-VNT8416 20 km single-fiber wide-temperature multi-service optical multiplexer, as a representative video optical multiplexer product under Raytrans, has its differentiated value concentrated in four areas: transmission distance, environmental adaptability, picture quality, and overall power consumption. The corresponding capability and specifications for each are shown in the table below.
| Differentiated Selling Points | Corresponding Capability and Specifications | Description/Applicable Conditions |
|---|---|---|
| 20 km single fiber | Single-fiber 20 km transmission, optional long-distance optical modules extend further | Single-mode 20 km repeaterless, transmit optical power -9 to -1 dBm, receiver sensitivity better than -21 dBm; a single fiber from the site to the center directly, with no repeater or routing/switching equipment in between |
| Industrial-grade wide temperature | Industrial grade -40℃ to +85℃ wide temperature, relative humidity 0 to 95% (non-condensing) | Suitable for unattended sites in the field, also usable in outdoor equipment boxes, pole-mounted installations, and workshops with large temperature fluctuations |
| 70 dB SNR | Video SNR ≥70 dB, differential gain <0.7%, high-fidelity picture | 8-bit sampling, 0 Hz to 6.5 MHz bandwidth, and <3% luminance non-linearity ensure color and luminance reproduction of surveillance video |
| ≤40W power consumption | Overall power consumption ≤40W, power supply mode AC 220 V/DC -48 V/DC 9 V | Field sites can use storage batteries or small-capacity power supplies for low-power supply, with less pressure on cabinet power supply and heat dissipation |
Whether for a government private network optical fiber communication solution or a smart mining communication solution, this optical multiplexer product, integrating the capabilities of video optical multiplexers, telephone optical multiplexers, and multi-service optical multiplexers, can provide stable and reliable optical fiber communication assurance for various industrial scenarios through single-fiber multiplexing.
How far can a multi-service optical multiplexer transmit over a single fiber
How far a multi-service optical multiplexer can transmit over a single fiber depends on the margin among the optical module grade, fiber type, and link loss. The standard configuration of the Raytrans IDM-VNT8416 20 km single-fiber wide-temperature multi-service optical multiplexer is single-mode fiber, FC interface, with a default transmission distance of 20 km, corresponding to transmit optical power of -9 to -1 dBm and receiver sensitivity better than -21 dBm. The optical power margin reserved at both ends is the usable portion of the link budget.
When the distance exceeds 20 km, long-distance optical modules can be optionally installed for longer-distance optical fiber transmission; the actual achievable distance must also be calculated segment by segment based on optical cable loss, the number of flanges and splice points, and termination quality. In engineering practice, it is recommended to reserve a certain optical power margin at both ends of the link to avoid insufficient margin after optical cable aging or connector contamination.
What is the industrial-grade wide temperature range of an optical multiplexer
What is the industrial-grade wide temperature range of an optical multiplexer? The industrial-grade operating temperature of the Raytrans IDM-VNT8416 20 km single-fiber wide-temperature multi-service optical multiplexer is -40℃ to +85℃, with relative humidity 0 to 95% (non-condensing), standard operating temperature of -15℃ to +65℃, and storage temperature of -25℃ to +75℃. These specifications allow the device to start and operate normally in severe cold plateaus and high-temperature deserts, unaffected by on-site day-night temperature differences and wind, sand, rain, or snow.
Power supply options include AC 220 V, DC -48 V, and DC 9 V, with overall power consumption ≤40 W. Communications equipment rooms and private network cabinets can draw DC -48 V power directly, while field sites without mains power can run on storage batteries or generators at low power consumption. The installation quality of power and ground wires also affects long-term operation. For aerial or pole-laid optical cable routes, equipotential grounding is recommended at the equipment boxes on both ends.
What Is the Video SNR of a Video Optical Multiplexer, and Does the Picture Count as High-Fidelity?
The video SNR of a video optical multiplexer directly determines whether details can be seen clearly in surveillance video. The Raytrans IDM-VNT8416 20Km single-fiber wide-temperature multi-service optical multiplexer delivers a video SNR ≥70 dB (weighted), differential gain (DG) <0.7%, differential phase (DP) <0.7°, and luminance non-linearity <3%. Combined with 8-bit sampling and a 0 Hz–6.5 MHz video bandwidth, color and brightness reproduction is stable, reaching high-fidelity transmission levels.
The other half of high fidelity comes from all-digital transmission. Video signals enter the optical channel without compression encoding, avoiding the loss of detail and encoding/decoding latency that compression introduces. High-fidelity audio services additionally provide 24-bit sampling, a 32 KHz sampling frequency, ≥90 dB audio SNR, and a 20 Hz–20 KHz bandwidth, with total harmonic distortion (THD) <1%, so voice for dispatch intercom and broadcast backhaul is clearly intelligible.
How to Select a Multi-Service Optical Multiplexer for an Industrial Private Network
To select a multi-service optical multiplexer for an industrial private network, first check the number and direction of services to be connected against the on-site service list, then determine the optical module and model grade according to transmission distance and environmental conditions, and finally verify the power supply mode and installation space.
The service list determines the interface configuration. How many channels of video are on site, whether bidirectional transmission is needed, whether E1 leased lines must be retained, and whether network cameras or the office network need backhaul — each item maps to video ports, E1 channels, Ethernet ports, and audio ports. The Raytrans IDM-VNT8416 20Km single-fiber wide-temperature multi-service optical multiplexer comes standard with 8-channel video, 4-channel E1 transparent transmission, 4-channel shared 100M Ethernet, and 4 groups of high-fidelity audio. Voice and low-speed data interfaces can be expanded per project with FXS, FXO, magneto telephone cards, and service cards such as V.24 and V.35, so requirements for telephone optical multiplexers and multi-service optical multiplexers can both be met on the same platform.
Distance and environment determine the model configuration. For routes with long spans between sections and distributed sites, calculate the optical power budget based on a 20Km single-mode configuration, and choose long-distance optical modules for greater distances. For sites installed in outdoor equipment boxes, on mounting poles, or inside tunnels, choose the industrial-grade wide-temperature configuration (-40 °C to +85 °C), confirm whether on-site power supply access is AC 220 V or DC -48 V, and check whether the 440×230×45 mm enclosure dimensions match the cabinet space. As a professional optical multiplexer manufacturer, Raytrans provides selection support and product showcase services for government private network optical fiber communication solutions and smart mining communication solutions.
Typical Application Scenarios
Electric Power and Rail Transit Industrial Private Networks
Substations, switching stations, traction substations, and rail transit line sites are mostly far from the central equipment room. On site there is often only a pair of optical fibers and limited rack positions, yet surveillance video, dispatch telephone, and telecontrol data must all be backhauled at the same time. The Raytrans IDM-VNT8416 20Km single-fiber wide-temperature multi-service optical multiplexer uses a single optical fiber to send 8-channel video, 4-channel E1 transparent transmission, 4-channel shared 100M Ethernet, and high-fidelity audio back to the dispatch end together. Existing E1 leased lines can be transparently transmitted as-is, with no need to lay separate lines for each type of signal. The industrial-grade -40 °C to +85 °C wide temperature range and AC 220 V/DC -48 V dual power supply modes adapt to the actual power supply access conditions of electric power and rail transit private network equipment rooms and outdoor cabinets.
Safe City and Expressway Video Surveillance
Safe City and expressway surveillance sites are distributed in bands along the line. The distance from intersection equipment boxes to the surveillance center often exceeds the usable range of coaxial cable and twisted pair, while road excavation and duct resources are very tight. The Raytrans IDM-VNT8416 20Km single-fiber wide-temperature multi-service optical multiplexer covers the typical distance between adjacent toll stations, tunnel portals, and the surveillance center with single-fiber 20Km transmission. Front-end video travels along a single fiber core directly to the center, with no repeater or routing/switching equipment in between. Video and 100M Ethernet are multiplexed over one optical cable, reducing duct occupation, and a video SNR ≥70 dB ensures picture legibility at night and under backlight conditions.
Unattended Field Sites
Unattended sites for water conservancy, environmental protection, oil and gas pipelines, and border defense are far from the center and require infrequent maintenance. Once a communication link is interrupted, manual attendance on site for troubleshooting is time-consuming. The Raytrans IDM-VNT8416 20Km single-fiber wide-temperature multi-service optical multiplexer connects the site directly to the central equipment room, reducing one level of repeaters and routing/switching links, and thereby reducing points of failure. Overall power consumption ≤40 W makes long-term power supply from solar or storage batteries easy. The industrial-grade -40 °C to +85 °C wide temperature range and 0–95% non-condensing humidity suit field cabinet environments, and video, E1, Ethernet, and audio services are all connected uniformly within the same device.
Figure 3: Single-fiber networking diagram of the IDM-VNT8416 multi-service video optical multiplexer in an electric power private network and expressway surveillance
