IDM-VNT8416 Field Video Optical Multiplexer

IDM-VNT8416 8-channel video field optical multiplexer is a field-type multi-service optical multiplexer developed by Beijing Ruiguang Jiyuan Digital Technology Co., Ltd. As a professional optical multiplexer manufacturer, Raytrans integrates emergency communications requirements into the product design. The device is used in pairs consisting of a transmitter and a receiver, and multiplexes 8-channel video, 4 groups of high-fidelity audio, 4-channel E1 transparent transmission and 4-channel shared 100M Ethernet onto a single optical fiber link for transmission. It is suitable for scenarios such as military emergency communications vehicle solutions and government private network optical fiber communication solutions.

IDM-VNT8416 8-channel video field optical multiplexer adopts uncompressed video encoding and time division multiplexing (TDM) to converge video, audio, E1 and Ethernet services into a 1.25Gbps optical transmission channel. As a converged product of a video optical multiplexer and a multi-service optical multiplexer, it works once the optical and electrical ends are connected in pairs, with no electrical or optical adjustment required on site, meeting the requirements of rapid deployment for emergency communications.

Key Specifications at a Glance: 8-channel video · 4-channel E1 transparent transmission · 4 groups of high-fidelity audio · 4-channel shared 100M Ethernet · 1.25Gbps receive/transmit · 1310nm/1550nm wavelength pairing · single-mode (multi-mode optional) · online network management

Figure 1: Close-up of the front of the IDM-VNT8416 field video optical multiplexer enclosure, FC optical port and 8-channel BNC video interfaces

What kind of device is an 8-channel video field optical multiplexer?

An 8-channel video field optical multiplexer is a multi-service video optical multiplexer that multiplexes multiple channels of video together with voice, E1, Ethernet and other services onto a single optical fiber for transmission and adapts to field and vehicle-mounted environments. It is also a common access device in emergency communications and military emergency communications vehicle solutions.

IDM-VNT8416 8-channel video field optical multiplexer is deployed between field sites and the central equipment room. The site side connects cameras, audio terminals, E1 service devices and the network, while the central side restores and outputs 8-channel video, 4 groups of high-fidelity audio, 4-channel E1 transparent transmission and 4-channel shared 100M Ethernet together. There is no need to place a separate transmission device for each type of service in the site equipment box.

An ordinary video optical multiplexer carries only video channels, and other transmission devices must be added on site when audio, E1 trunk and network data are also present. In addition to 8-channel video, IDM-VNT8416 8-channel video field optical multiplexer provides 4 groups of high-fidelity audio, 4-channel E1 transparent transmission and 4-channel shared 100M Ethernet, and can be further expanded through voice interface cards and data service cards; when the site service list changes, capacity can be expanded by card without replacing the entire unit. As a product of the professional optical multiplexer manufacturer Raytrans, this model can coordinate networking with multi-service optical multiplexers, telephone optical multiplexers and other devices, meeting the access requirements of scenarios such as government private network optical fiber communication solutions and intrinsically safe mining communication.

Video channels are input and output through BNC interfaces, with a video sampling bit width of 8bit, a video bandwidth of 0Hz to 6.5MHz, luminance non-linearity <3%, input/output voltage 1VP-P (typical value), input overload voltage 1.5VP-P (typical value), input/output impedance 75Ω (unbalanced), and video SNR ≥70dB (weighted).

These specifications come from the uncompressed all-digital video transmission method. The link does not go through analog frequency modulation (FM), phase modulation (PM) or compression encoding, so it is compatible with video formats such as PAL, NTSC and SECAM, and the picture introduces no compression damage in the transmission segment.

Core functions: how 8-channel video, 4 groups of high-fidelity audio, 4-channel E1 and 4-channel Fast Ethernet are multiplexed into a single optical fiber

IDM-VNT8416 8-channel video field optical multiplexer completes the multiplexed transmission of video, audio, E1 and Ethernet services in a single device. The main functions are listed in the table below.

Function	Description
8-channel video input	Provides 8 video channels, with unidirectional or bidirectional video flexibly configured according to user requirements, compatible with video formats such as PAL, NTSC and SECAM
4 groups of high-fidelity audio	Provides 4 groups of high-fidelity audio services, with an audio sampling bit width of 24bit, a sampling frequency of 32KHz and an audio SNR ≥90dB, used for broadcast, intercom and monitoring return
4-channel E1 transparent transmission	Provides 4-channel E1 transparent transmission, operating per ITU-T G.703, with a bit rate of 2.048Mbps and HDB3 line code, transparent to E1 frame content without changing the original service
4-channel shared 100M Ethernet	Provides 4-channel shared 100M Ethernet, with an interface rate of 10M/100M adaptive, supporting the IEEE802.3 standard protocol, operating mode full/half duplex/adaptive
1.25Gbps optical transmission channel	Receive/transmit rate both 1.25Gbps, multiplexing video, audio, E1 and Ethernet services into the same optical transmission channel for transmission
Voice interface card expansion	Can be configured with voice interface cards such as FXS, FXO, hotline telephone card, magneto telephone card and EM2/4 card, selected according to the type of telephone on site and the switching equipment interface
Data service card expansion	Can be configured with data service cards such as V.24 and V.35 to connect low-speed data and control devices
Network management and alarms	Features powerful network management functions and online real-time monitoring; device status and alarm information at the site side can be viewed on the network management interface at the central side
No on-site adjustment	Services can be enabled after wiring the optical and electrical ends according to port markings, with no electrical or optical adjustment required on site
Industrial-grade design	High system integration and reliability, low power consumption, suitable for field installation and vehicle-mounted environments

IDM-VNT8416 8-channel video field optical multiplexer collects the four types of services—video, audio, E1 and Ethernet—into the same optical fiber link, requiring only a single optical fiber between the site and the center. On sections where conduit resources are tight, or in private networks where optical cables have been in service for many years, there is no need to lay separate optical cables for surveillance images, audio return, E1 trunk and network data; one device replaces multiple single-service optical multiplexers. In emergency communications, military emergency communications vehicle solutions and government private network optical fiber communication solutions, this device can work with products such as optical multiplexers, video optical multiplexers, multi-service optical multiplexers and telephone optical multiplexers, with optical multiplexer manufacturers such as Raytrans providing the overall transmission solution, while also accommodating deployment requirements in special environments such as intrinsically safe mining communication.

Technical specifications: optical interface, video, Ethernet and interface specifications

The interfaces and specifications of IDM-VNT8416 8-channel video field optical multiplexer are listed by service category. The optical and electrical ends are used in pairs, and the following parameters are subject to the technical documentation of the optical multiplexer manufacturer Raytrans. This product is aimed at scenarios such as emergency communications and military emergency communications vehicle solutions, and can be used as a typical device of video optical multiplexers and multi-service optical multiplexers.

Optical Interface Parameters

Item	Parameter/Specification	Description/Applicable Conditions
Interface type	FC/UPC	Optical patch cord interface selected according to on-site optical cable termination method
Fiber mode	Single-mode (multi-mode optional)	Single-mode is the standard configuration, with standard configuration 20Km transmission
Receiver receive/transmit rate	1.25Gbps/1.25Gbps	Nominal rate in the receive direction and the transmit direction
Receiver receive/transmit wavelength	1310nm/1550nm	Used in wavelength pairing with the peer transmitter
Transmitter receive/transmit rate	1.25Gbps/1.25Gbps	Nominal rate in the transmit direction and the receive direction
Transmitter receive/transmit wavelength	1550nm/1310nm	Used in wavelength pairing with the peer receiver
Transmission distance	20Km	Long-distance optical modules can be optionally installed for longer-distance optical fiber transmission

Figure 2: Rear panel service interfaces and voice/data service card slots of the IDM-VNT8416 field video optical multiplexer

Video Channel Parameters

Item	Parameter/Specification	Description/Applicable Conditions
Interface type	BNC	Video port for connecting cameras and monitors
Video sampling bit width	8bit	All-digital video sampling precision
Video bandwidth	0Hz～6.5MHz	Covers the video baseband bandwidth of PAL, NTSC and SECAM formats
Luminance non-linearity	<3%	Luminance distortion specification of the video channel
Differential phase (DP)	<0.7°	Phase distortion specification of the chrominance signal
Differential gain (DG)	<0.7%	Amplitude distortion specification of the chrominance signal
Input overload voltage	1.5VP-P (typical value)	Allowable overload level at the video input
Input/output voltage	1VP-P (typical value)	Standard video signal level
Input/output impedance	75Ω (unbalanced)	Consistent with camera and monitor impedance
Video SNR	≥70dB (weighted)	Picture noise level under the weighted specification

Ethernet and Data Interface Parameters

Item	Parameter/Specification	Description/Applicable Conditions
Ethernet interface type	RJ-45	4-channel shared 100M Ethernet ports
Ethernet transmission rate	10M/100M adaptive	Auto-negotiation with peer network devices
Standard protocol	Supports IEEE802.3	Compatible with general Ethernet devices
Operating mode	Full/half duplex/adaptive	Automatically matched to peer port capabilities
E1 channel	4-channel E1 transparent transmission	2.048Mbps, HDB3 line code, compliant with ITU-T G.703
Data interface (optional)	Data service cards such as V.24 and V.35	Supports RS-232, RS422 (4-wire), RS485 (2-wire)

Audio, Voice and Power Supply and Environment Parameters

Item	Parameter/Specification	Description/Applicable Conditions
High-fidelity audio interface	Audio ports, 4 groups	Audio sampling bit width 24bit, sampling frequency 32KHz, audio bandwidth 20Hz～20KHz
High-fidelity audio SNR	≥90dB	Audio channel noise level, total harmonic distortion (THD) <1%
Voice compression method (optional)	A-law in ITU G.711	Voice interface cards carry narrowband voice services
Voice audio range (optional)	300Hz～3400Hz	Interworking with SPC exchanges and the telephone side
Power supply mode	AC220V/DC-48V/DC 9V	Selected according to the power conditions of the equipment room and the site
Overall power consumption	≤150W	Operating power consumption of the unit
Operating temperature	-15℃～+65℃ (conventional) / -40℃～+85℃ (industrial grade)	Selected between conventional model and industrial-grade model according to on-site climate
Product dimensions	440×230×270 (mm, Length×Depth×Height)	Rack-mounted form factor, easy to install in cabinets and equipment boxes

The 4-channel E1 transparent transmission operates at the rate and interface characteristics specified in ITU-T G.703 Recommendation, with a bit rate of 2.048Mbps and HDB3 line code, and the channels are transparent to E1 frame content; the 4 groups of high-fidelity audio carry broadcast and intercom services with 24bit sampling, a 32KHz sampling frequency and ≥90dB SNR; the 4-channel shared 100M Ethernet operates per the IEEE802.3 standard protocol, with 10M/100M adaptive and full/half duplex adaptive. The above multi-service carrying capability enables this optical multiplexer to be used as a multi-service optical multiplexer and a telephone optical multiplexer, undertaking integrated transmission of video, voice and data in emergency communications and government private network optical fiber communication solutions.

How far can an 8-channel video optical multiplexer transmit?

How far an 8-channel video optical multiplexer can transmit depends on the optical module configuration and on-site optical cable conditions. IDM-VNT8416 8-channel video field optical multiplexer has a standard configuration of single-mode 20Km transmission.

The transmitter transmits at 1550nm and receives at 1310nm, while the receiver transmits at 1310nm and receives at 1550nm, with receive/transmit rates both 1.25Gbps, and the wavelengths at both ends are used in pairs. The optical power margin reserved between the transmit optical power and the receiver sensitivity is used to compensate for the attenuation of the optical fiber itself, splice points and connector loss.

In engineering practice, the receive-end optical power is calculated section by section based on optical cable length, attenuation coefficient, and number of connectors. When the link exceeds 20 km, long-distance optical modules can be optionally installed to extend the transmission distance. Single-mode fiber is immune to electromagnetic interference (EMI) and radio frequency interference (RFI). Over long-distance links, video and data are free from streaking and distortion caused by ground potential difference, making the solution suitable for networking at field sites, cabinets along the route, and border and coastal defense sites, as well as for electromagnetic-sensitive applications such as intrinsically safe mining communication.

How to Select a Field Video Optical Multiplexer?

Selecting a field video optical multiplexer comes down to three questions: how many service types a single unit must aggregate, how to configure the optical port and wavelength, and whether on-site power supply and temperature are demanding. Check item by item according to the three steps below.

First, Count the Service Channels

• Video: calculated by 8 video channels. For scenarios requiring on-site video backhaul and central delivery, configure bidirectional video.
• Audio: calculated by 4 groups of high-fidelity audio, used for PA, intercom, and monitoring backhaul.
• E1: calculated by 4 E1 transparent transmission channels, connecting to existing E1 trunks and E1 service devices.
• Ethernet: calculated by 4-channel shared 100M Ethernet, backhauling network cameras, access control, and the site office network.
• Expansion: select voice interface cards such as FXS, FXO, hotline telephone card, magneto telephone card, and EM2/4 card according to the type of telephone on site; select data service cards such as V.24 and V.35 according to the control device interface.

Second, Check the Optical Port and Wavelength

The optical port is FC/UPC. The fiber mode is single-mode as standard configuration, with multi-mode optional. The receive/transmit rate is 1.25Gbps for both. The receive/transmit wavelengths of the two ends must be paired: one end transmits at 1550nm and receives at 1310nm, while the other end transmits at 1310nm and receives at 1550nm. Calculate the optical power margin of the link based on optical cable length. Consider installing long-distance optical modules only when the link exceeds 20 km.

Finally, Check Power Supply, Temperature, and Network Management

• Select the power supply mode from AC220V, DC-48V, and DC 9V according to the site power conditions. The overall power consumption is ≤150W; calculate the power capacity and heat dissipation inside the equipment box accordingly.
• Select the operating temperature from -15℃～+65℃ for conventional models and -40℃～+85℃ for industrial grade according to the on-site climate. For outdoor equipment boxes and equipment rooms without air conditioning, give priority to industrial-grade configurations.
• For projects with distributed sites and high site inspection costs, list online network management as a selection condition to reduce the frequency of on-site inspection.

For specific channel configurations, optical module distance, and customized interface requirements, refer to the manufacturer's technical documentation and commercial confirmation of Raytrans, an optical multiplexer manufacturer. During selection, you can confirm the interface and service card configurations of optical multiplexers, video optical multiplexers, multi-service optical multiplexers, and telephone optical multiplexers based on actual requirements such as emergency communications, military emergency communications vehicle solutions, and government private network optical fiber communication solutions, and verify the corresponding models for special environments such as intrinsically safe mining communication.

How to Wire an Optical Multiplexer with Paired Wavelengths?

To wire an optical multiplexer with paired wavelengths, simply match each item by service type: video goes through 75 Ω coaxial cable to the BNC port; audio, E1, Ethernet, and data each go through their corresponding ports; optical fiber patch cords connect to the optical port; after pairing the wavelengths at both ends, power on and verify. The on-site wiring correspondences of the IDM-VNT8416 8-channel video field optical multiplexer are shown in the table below.

Service	Equipment-side Interface	On-site Connection	Description
Video	BNC, 75 Ω unbalanced	Camera, monitor, video matrix	Input/output voltage 1VP-P (typical), use 75 Ω video coaxial cable
High-fidelity audio	Audio port, 4 groups	Audio terminal, PA and intercom equipment	Audio sampling frequency 32KHz, audio SNR ≥90dB, connect according to port markings
4-channel E1	E1 transparent transmission channel	E1 trunk equipment, E1 service device	2.048Mbps, HDB3 code, the channel does not interpret E1 frame content
Ethernet	RJ-45, 4-channel shared 100M	Switch, network camera	10M/100M adaptive, full/half duplex adaptive
Voice (optional)	Voice interface card	SPC exchange, ordinary telephone, magneto telephone	A-law encoding per ITU G.711, audio range 300Hz～3400Hz
Data (optional)	Data service card	Data terminal, control device	Supports RS-232, RS422 (4-wire), RS485 (2-wire)
Optical path	FC/UPC	Optical fiber patch cord, optical cable	Single-mode (multi-mode optional), receive/transmit wavelength 1310nm/1550nm paired
Power	AC220V/DC-48V/DC 9V	Equipment room and site power	Overall power consumption ≤150W

Proceed with on-site wiring in the following order:

• First connect the service cables: connect video, audio, E1, Ethernet, and optional voice and data services separately according to port markings.
• Then connect the optical fiber patch cords: verify the receive/transmit wavelength pairing between the two ends to avoid link failure caused by reversed connections.
• Finally, power on and verify: confirm that the indicator LEDs and alarm indications of each service port are normal, enable services one by one, and record the test results.

The device requires no on-site adjustment. Voice and data interface cards are configured before delivery according to the project; on site, simply connect cables according to port markings.

What Does Video Bandwidth 0Hz～6.5MHz Mean?

Video bandwidth 0Hz～6.5MHz refers to the signal frequency range that the video channel can pass without attenuation. It determines the upper limit at which picture detail and color can be transmitted completely. The baseband signal frequencies of standard-definition video such as PAL, NTSC, and SECAM fall within this range. Therefore, a channel bandwidth of 0Hz～6.5MHz can fully carry standard-definition video signals without losing high-frequency detail due to insufficient channel bandwidth.

Bandwidth specifications form a complete picture quality guarantee only when combined with sampling accuracy and linearity. The IDM-VNT8416 8-channel video field optical multiplexer has a video sampling bit width of 8bit, luminance non-linearity <3%, differential phase (DP) <0.7°, differential gain (DG) <0.7%, and input/output impedance of 75 Ω (unbalanced).

All-digital uncompressed transmission does not perform analog modulation or compression encoding. The link introduces no compression latency or block artifacts to the picture, so real-time monitoring at the surveillance center and post-event playback present consistent images. This is exactly the picture quality foundation supported jointly by video bandwidth 0Hz～6.5MHz, 8bit sampling, and luminance non-linearity <3%.

Typical Application Scenarios

The IDM-VNT8416 8-channel video field optical multiplexer is deployed between field sites and the center: the site side connects cameras, audio terminals, E1 service devices, and the site network; the central side restores video, audio, E1, and Ethernet services. The entire process is aggregated over one optical fiber link, with one device corresponding to one site.

Field Forces and Emergency Communications

In emergency communications scenarios, military field operations and emergency communications require equipment to be quick to install and quick to connect, and to withstand vehicle vibration and field temperature differences. Often only a pair of optical fibers is available on site.

The IDM-VNT8416 8-channel video field optical multiplexer aggregates 8 video channels, 4 groups of high-fidelity audio, 4 E1 transparent transmission channels, and 4-channel shared 100M Ethernet onto the same optical fiber link. The command post can simultaneously enable video consultation, voice backhaul, E1 trunking, and the internal network on one pair of devices, reducing on-site cabling and setup time. After the optical and electrical ends are paired, no on-site adjustment is required; after a temporary post is withdrawn and re-erected, it remains plug-and-play. This field optical multiplexer solution is also suitable for multi-service integrated access between vehicle-mounted stations and the command center in military emergency communications vehicle solutions.

Unattended Sites and Border and Coastal Defense Private Networks

Border and coastal defense duty posts, field monitoring stations, and pump station valve chambers are scattered sites, most of which are unattended. The distance from the site to the center is long, and the cost and cycle of maintenance personnel visiting the site are high.

The IDM-VNT8416 8-channel video field optical multiplexer backhauls the site's video, audio, E1, and network services together. On the central side, the operating status and alarm information of each site's equipment can be viewed on the network management interface, and most status checks and alarm confirmations can be completed at the center. Industrial-grade wide temperature and three power supply modes—AC220V, DC-48V, and DC 9V—adapt to the operating conditions of outdoor equipment boxes and equipment rooms without air conditioning.

Industrial Private Networks and Critical Infrastructure

Along the routes of power, railway, mining, and oil and gas pipelines, sites face strong electromagnetic environments and have high requirements for the anti-interference capability and long-term online capability of transmission links. The IDM-VNT8416 8-channel video field optical multiplexer uses optical fiber as the transmission medium. Single-mode fiber itself is immune to electromagnetic interference (EMI) and radio frequency interference (RFI), and the optical and electrical ends are electrically isolated, which can avoid interference from strong electromagnetic environments on video and data signals. The 4 E1 transparent transmission channels are transparent to existing E1 services, so the original trunk services in the station can be connected without modification. In mining scenarios, it can be paired with intrinsically safe mining communication equipment and intrinsically safe mining communication terminals to meet the intrinsically safe communication networking requirements of underground and along-route sites.

Differentiated Value: 8-Channel Video, 4-Channel E1, 1.25Gbps, and Online Network Management

The correspondence between the differentiated capabilities and customer value of the IDM-VNT8416 8-channel video field optical multiplexer is shown in the table below.

Differentiation Point	Corresponding Capability and Specifications	Customer Value
8-channel video + 4 groups of audio + 4-channel E1 + 4-channel Fast Ethernet, multi-service carried over a single fiber	8-channel video, 4 groups of high-fidelity audio, 4 E1 transparent transmission channels, and 4-channel shared 100M Ethernet aggregated into the same optical fiber link	One fiber simultaneously replaces video coaxial cable, audio cable, E1 cable, and network cable. The site does not need to configure separate transmission equipment and optical paths for each service type, reducing cabling and points of failure at the same time
1.25Gbps dual-fiber wavelength-division receive/transmit, 1310/1550nm pairing, single-mode long-distance anti-interference	Receive/transmit rate is 1.25Gbps for both, receive/transmit wavelength 1310nm/1550nm, standard configuration single-mode 20Km, multi-mode optional	Link bandwidth leaves margin for parallel transmission of 8-channel video with audio, E1, and Ethernet. Single-mode fiber long-distance transmission is immune to electromagnetic interference and radio frequency interference
Video bandwidth 0Hz～6.5MHz, 8bit sampling, luminance non-linearity <3%, stable picture quality	BNC interface 75 Ω unbalanced, video SNR ≥70dB (weighted), differential phase <0.7°, differential gain <0.7%	All-digital uncompressed transmission fully restores standard-definition video signals, keeping picture detail and color consistent over long links
Online network management	Powerful network management functions, enabling online real-time monitoring of site-side device status and alarms	When sites are distributed, most status checks and alarm confirmations can be completed at the center, reducing site inspection and fault location time

As a professional optical multiplexer manufacturer, Raytrans provides product showcase and selection support covering video optical multiplexers, multi-service optical multiplexers, telephone optical multiplexers, and various optical multiplexers, and can provide customized multi-service access and networking design for government private network optical fiber communication solutions.

Summary

The IDM-VNT8416 8-channel video field optical multiplexer aggregates 8 video channels, 4 groups of high-fidelity audio, 4 E1 transparent transmission channels, and 4-channel shared 100M Ethernet onto the same optical fiber link for transmission. With a 1.25Gbps receive/transmit rate, 1310nm/1550nm wavelength pairing, and single-mode (multi-mode optional) optical ports, it covers conventional links at field sites. The video channel has a video bandwidth of 0Hz～6.5MHz, 8bit sampling, and luminance non-linearity <3%, keeping the picture consistent in the uncompressed transmission stage. As an optical multiplexer manufacturer, Raytrans integrates the capabilities of this video optical multiplexer with those of multi-service optical multiplexers, serving scenarios such as emergency communications, military emergency communications vehicle solutions, and government private network optical fiber communication solutions, and also providing reliable transmission support for intrinsically safe mining communication.

During selection, check item by item according to the number of service channels, optical port and wavelength pairing, and power supply and temperature conditions, and equip voice interface cards and data service cards according to the on-site telephones and data devices. Confirm specific configurations with the manufacturer.