FAQ

Question 1

What kind of device is the IDM-Video Phone video telephone optical multiplexer, and what services can it transmit?

Accepted Answer

The IDM-Video Phone video telephone optical multiplexer is a multi-service optical multiplexer developed by Beijing Ruiguang Jiyuan Digital Technology Co., Ltd. It combines four types of services, namely video, telephone, data and Ethernet, into the same pair of optical fiber channels, so that transmission tasks that previously required multiple single-function devices can be carried over one device and a single optical fiber. The device provides bidirectional single-channel video, 2 telephone c

Question 2

How far can the IDM-Video Phone video telephone optical multiplexer transmit?

Accepted Answer

The transmission distance of a video telephone optical multiplexer depends on the margin between three factors: the transmit optical power, the receiver sensitivity and the line loss. The IDM-Video Phone video telephone optical multiplexer comes standard with 20 km single-mode transmission, corresponding to a 155M optical interface, a transmit optical power of -15 to -8 dBm and a receiver sensitivity better than -32 dBm; the available optical power margin left between the two ends is the margin

Question 3

What interfaces does the IDM-Video Phone video telephone optical multiplexer provide, and what devices can it connect to?

Accepted Answer

The interfaces of the video telephone optical multiplexer are classified by service type: the video port of the IDM-Video Phone video telephone optical multiplexer is BNC, 75 Ω unbalanced, and connects to cameras and display devices; the telephone service provides FXO and FXS interfaces, with an audio range of 300 Hz to 3400 Hz and A-law compression in accordance with ITU G.711; the two data ports are RJ-45 and support RS-232, RS-422 (4-wire) and RS-485 (2-wire), and can connect to PTZ controlle

Question 4

How to troubleshoot the situation where calls cannot be made or video backhaul fails after the IDM MCC580 is powered on?

Accepted Answer

To troubleshoot abnormal calls and video backhaul on the IDM MCC580 portable multi-mode converged communication terminal, it is recommended to proceed in the following order: first check whether the terminal has registered with the target network and whether the SIM card and the signal are normal; then confirm whether the terminals participating in the communication are on the same mesh network and on the same frequency, and for a centerless ad-hoc network, wait until networking succeeds before

Question 5

What kind of device is the IDM MCC580 portable multi-mode converged communication terminal, and in which application scenarios can it be used?

Accepted Answer

The IDM MCC580 portable multi-mode converged communication terminal is an integrated portable IP communication device developed by Beijing Ruiguang Jiyuan Digital Technology Co., Ltd., integrating 4G/5G full-network compatibility, SparkLink wireless, Mesh ad-hoc networking, an optional satellite IoT port card and SIP and audio telephone gateways into a single unit. The unit is equipped with a 10-inch touchscreen and dual 4-megapixel front and rear cameras with adjustable angle, built-in 1TOPS@IN

Question 6

Without a public network or base station, how does the IDM MCC580 perform ad-hoc network communication?

Accepted Answer

A centerless ad-hoc network means terminals discover their neighbors and form a mesh network without relying on a server, base station or public network. After power-on, the IDM MCC580 portable multi-mode converged communication terminal performs automatic search for same-frequency terminals and establishes mesh links; any two terminals can reach each other, and voice, video and data are shared within the network. In the event of link interruption, services perform automatic rerouting through ot

Question 7

What are the endurance, power supply and environmental adaptability conditions of the IDM MCC580?

Accepted Answer

The IDM MCC580 portable multi-mode converged communication terminal has an overall power consumption of less than 10 W and a built-in 20000 mAh industrial lithium battery, making it suitable for long-time field and emergency operations and reducing charging frequency; it supports a wide-voltage power supply of AC 187 V ~ 242 V and lets peripherals draw power from multiple Type-C ports, adapting to different on-site power supply conditions. In terms of environmental adaptability, its operating te

Question 8

What external interfaces does the IDM MCC580 provide, and which communication networks can it connect to?

Accepted Answer

The IDM MCC580 portable multi-mode converged communication terminal expands its interfaces at two levels — external plug-in and built-in board: externally it has one 100 Mbps plus one Gigabit RJ45 port, three Type-C ports and an SD card, and the external expansion socket on the body accepts plug-in switch docking modules, telephone FXS/FXO modules, trunking intercom modules and radio access modules. For communication access, 4G/5G full-network compatibility and SparkLink wireless are standard bu

Question 9

What are the power consumption, endurance and power supply conditions of the IDM MCC580?

Accepted Answer

The IDM MCC580 has an overall power consumption of less than 10 W and a built-in 20000 mAh industrial lithium battery; its low power consumption design extends field and emergency operating time and reduces charging frequency. Its power supply uses a wide-range voltage input of AC 187 V ~ 242 V, and peripherals can draw power from multiple Type-C ports. The unit's operating temperature is -10 °C to +45 °C and its storage temperature is -40 °C to +70 °C, with an ingress protection (IP) rating

Question 10

What kind of device is the IDM MCC580 portable multi-mode converged communication terminal, and what is it mainly used for?

Accepted Answer

The IDM MCC580 portable multi-mode converged communication terminal integrates 4G/5G full-network compatibility, SparkLink wireless, Mesh ad-hoc networking, an optional satellite IoT port card and a SIP audio telephone gateway into a single unit; it is a converged communication terminal, an ad-hoc network communication terminal and an audio and video communication terminal. The unit is equipped with a 10-inch high definition (HD) high-brightness touchscreen, dual front and rear 4-megapixel camer

Question 11

How is networking and communication established between IDM MCC580 units when there is no public network or base station on site?

Accepted Answer

A centerless ad-hoc network means that terminals do not rely on a server, a base station, or a public network; instead, they discover their neighbors by themselves and form a mesh network. Once the IDM MCC580 is powered on, it automatically searches for terminals on the same frequency and establishes mesh links, so that any two terminals can reach each other, with voice, video, and data shared within the network; when a link is interrupted, services are automatically rerouted through other nodes

Question 12

What kind of device is the IDM MCC580 portable multi-mode converged communication terminal, and what is it mainly used for?

Accepted Answer

The IDM MCC580 portable multi-mode converged communication terminal integrates 4G/5G full-network compatibility, SparkLink wireless, Mesh ad-hoc network, an optional satellite IoT port card and a SIP audio telephone gateway into a single unit; it is a converged communication terminal, an ad-hoc network communication terminal and an audio and video communication terminal. The unit is equipped with a 10-inch high definition (HD) high-brightness touchscreen, dual front and rear 4-megapixel cameras,

Question 13

What are the overall power consumption and endurance of the IDM MCC580, and what are its power supply and environmental adaptability conditions?

Accepted Answer

The IDM MCC580 portable multi-mode converged communication terminal has an overall power consumption of less than 10 W, a built-in 20000 mAh industrial lithium battery, and supports a wide-voltage power supply of AC 187 V ~ 242 V, adapting to different on-site power supply conditions. In terms of structure, the unit adopts IP68 protection, drop and shock resistance, and a wide-temperature design; its operating temperature is -10 °C to +45 °C and its storage temperature is -40 °C to +70 °C, with

Question 14

How is centerless ad-hoc networking established, and can it still communicate without a public network?

Accepted Answer

A centerless ad-hoc network means that terminals do not rely on a server, a base station, or a public network; instead, they discover neighbors by themselves and form a mesh network. The IDM MCC580 portable multi-mode converged communication terminal, once powered on, automatically searches for terminals on the same frequency and establishes mesh links, so that any two terminals can reach each other, with voice, video and data shared within the network; when a link is interrupted, services are a

Question 15

What interfaces does the IDM MCC580 provide, and which communication networks can it access?

Accepted Answer

The IDM MCC580 portable multi-mode converged communication terminal provides 1 × 100 Mbps RJ45 port and 1 × Gigabit RJ45 port, 3 × Type-C ports and an SD card slot, with WiFi, HALOW, SparkLink and 4G/5G antennas built into the enclosure. For wireless access it supports 4G/5G full-network compatibility, SparkLink, WiFi HALOW, Mesh ad-hoc networks and satellite IoT; the 100 Mbps port connects to an external network or an IP terminal, the Gigabit port connects to a softswitch server, and the termin

Question 16

What practical value does all-digital uncompressed transmission in a video optical multiplexer bring to surveillance video?

Accepted Answer

All-digital uncompressed transmission means that after the video signal is digitized inside the IDM-Video16 video optical multiplexer, it is sent directly onto the optical fiber as a digital stream, with no compression encoding anywhere in the link, and after restoration at the far end, it is still the original picture data. This approach brings three direct benefits: first, there is no loss of detail caused by compression, and high-resolution moving images and still images are both preserved in

Question 17

What interfaces does the IDM-Video16 16-channel video optical multiplexer provide and what services can it connect to?

Accepted Answer

The service interfaces of the IDM-Video16 video optical multiplexer are completed under the factory configuration, so on site it is only necessary to connect the cables according to the port markings, with no additional electrical or optical adjustment required. The IDM-Video16 video optical multiplexer provides 16 unidirectional video channels and 4-channel high-fidelity audio, and the audio can be used for intercom, monitoring or conference sound reinforcement; it also provides 4-channel E1 tr

Question 18

What kind of device is the IDM-Video16 digital video optical multiplexer, and what is it mainly used for?

Accepted Answer

The IDM-Video16 video optical multiplexer is a digital video optical multiplexer developed by Beijing Ruiguang Jiyuan Digital Technology Co., Ltd. (Raytrans). It completes the transmission of 16 video service channels over the optical fiber transmission medium and at the same time implements the transmission of RS232 and RS485 data, and is deployed as a pair between the surveillance sites and the surveillance center. The IDM-Video16 video optical multiplexer adopts all-digital uncompressed techn

Question 19

How to troubleshoot no video output or abnormal images after installing a video optical multiplexer?

Accepted Answer

After a video optical multiplexer is installed with no video output, carry out troubleshooting in the following order: first confirm the receive/transmit relationship and wavelength matching of the optical ports at the transmitting end and the receiving end, and that the devices at both ends are used as a pair; then use an optical power meter to verify whether the received optical power is within the normal range; then check the cleanliness and full insertion of the optical fiber patch cord end

Question 20

How far can a video optical multiplexer transmit, and how is the link distance calculated in engineering practice?

Accepted Answer

The transmission distance of the IDM-Video16 video optical multiplexer depends on the transmit optical power of the optical port, the receiver sensitivity, the optical fiber attenuation coefficient and the connector loss. In engineering practice it is calculated as an optical power budget: the available distance is approximately equal to the transmit optical power minus the receiver sensitivity, and the optical power margin obtained after deducting the splice points, mating connectors and aging

Question 21

What are the optical port type and transmission distance of an 8-channel video optical multiplexer, and what should be done if the distance is exceeded?

Accepted Answer

The transmitter receive/transmit rate of the IDM-VDA8200 8-channel video optical multiplexer is 1.25G bps with receive/transmit wavelengths of 1550 nm/1310 nm, and the receiver receive/transmit rate is likewise 1.25G bps with receive/transmit wavelengths of 1310 nm/1550 nm. The receive and transmit wavelengths at the two ends are exactly opposite, which allows bidirectional transmission of video, data, audio and Ethernet services over the same optical fiber without mutual interference. To determ

Question 22

How does all-digital uncompressed video technology ensure the picture quality of 8 video channels?

Accepted Answer

After the video signal completes A/D sampling at the transmitter it is transmitted directly in digital form, and the receiver performs D/A conversion to restore it; the link contains no encoding or decoding stage and therefore introduces no picture quality loss or stream jitter caused by compression algorithms. The video signal-to-noise ratio (SNR) of the IDM-VDA8200 8-channel video optical multiplexer is ≥70 dB (weighted), its luminance non-linearity is <3%, its differential gain (DG) is &lt

Question 23

What kind of device is the IDM-VDA8200 8-channel video optical multiplexer, and what is it mainly used for?

Accepted Answer

The IDM-VDA8200 8-channel video optical multiplexer is a multi-service optical multiplexer deployed between the surveillance sites and the surveillance center. The transmitter digitizes the video signals of eight cameras and feeds them into the optical fiber, while the receiver restores and outputs them on the center side, replacing long-distance coaxial cable solutions. This video optical multiplexer is commonly used in security surveillance optical fiber transmission scenarios such as industri

Question 24

What Interfaces Does the IDM-VDA8200 8-Channel Video Optical Multiplexer Provide and What Devices Can It Connect To?

Accepted Answer

The video side uses BNC interfaces with an input/output impedance of 75 Ω (unbalanced) and a level of 1 VP-P (typical), and can be connected directly to cameras and monitors; the data side uses RJ-45 and supports RS-232, RS422 (4-wire) and RS485 (2-wire), connecting to PTZ controllers, control keyboards and decoders; the audio side uses an RJ45 connector with an input impedance of ADC: 100 kΩ and an output impedance of DAC: 10 kΩ, and can connect to intercom microphones and speakers; the Etherne

Question 25

What interfaces does the 4-channel video optical multiplexer provide, and what devices can it connect to?

Accepted Answer

The video side of the IDM-VDA4200 series 4-channel video optical multiplexer uses BNC interfaces for input and output, with an impedance of 75 Ω (unbalanced), and can be directly connected to cameras, DVRs, NVRs and monitors; the data port is an RJ-45 connector supporting RS-232, RS422 (4-wire) and RS485 (2-wire), and can connect to devices for PTZ control and alarm collection; the high-fidelity audio port is an RJ45 connector; the Ethernet port is an RJ-45 connector with 10M/100M adaptive opera

Question 26

What is the IDM-VDA4200 Series 4-Channel Video Optical Multiplexer?

Accepted Answer

The IDM-VDA4200 Series 4-Channel Video Optical Multiplexer is a compact multi-service optical multiplexer developed by Beijing Ruiguang Jiyuan Digital Technology Co., Ltd. (Raytrans). Deployed between surveillance sites and the surveillance center, it is used in pairs with a transmitter and a receiver to deliver the unidirectional video from 4 cameras, together with data and audio services, to the remote end for restoration and output. The IDM-VDA4200 Series simultaneously carries 4 channels of

Question 27

How to Troubleshoot No Video Output or Abnormal Images After Installing a Video Optical Multiplexer?

Accepted Answer

After a video optical multiplexer is installed, if there is no video output or the images are abnormal, follow this general troubleshooting sequence: first, confirm that the transmitter and receiver are used as a pair and that the direction is not reversed; second, use an optical power meter to check the received optical power against the receiver sensitivity, and check whether the patch cord end faces and the FC connectors are clean and whether the optical fiber is kinked or damaged; third, che

Question 28

What type of optical port does a 4-channel video optical multiplexer use, and how far can it transmit?

Accepted Answer

The optical interface of the IDM-VDA4200 series 4-channel video optical multiplexer is a standard FC type and can be customized to interfaces such as SC; the optical fiber is single-mode by default with multimode optional. The standard configuration of the device provides a transmission distance of 20 km; the transmit optical power at the transmitter is -12 to -7 dBm and the receiver sensitivity is better than -21 dBm (1310 nm). The difference between the two is the available link optical power

Question 29

How does an all-digital uncompressed video optical multiplexer ensure picture quality?

Accepted Answer

The IDM-VDA4200 series 4-channel video optical multiplexer uses all-digital uncompressed video technology: the transmitter samples at an 8-bit sampling bit width over a 0 Hz–6.5 MHz video bandwidth and transmits the signal directly over the optical fiber without compression or encoding, and the receiver restores it without distortion to analog video. As a result, the video signal-to-noise ratio (SNR) is ≥70 dB (weighted), luminance non-linearity is <3%, differential phase (DP) is <0.7° and

Question 30

What Does Uncompressed All-Digital Video Transmission Mean, and What Benefits Does It Offer for Surveillance Images?

Accepted Answer

The process of uncompressed all-digital video technology is as follows: the transmitting end performs A/D sampling on the video signal, transmits it directly in digital form over optical fiber without compression encoding, and the receiving end completes D/A restoration to output the video. With this approach, the video channel features an 8-bit sampling resolution and a bandwidth of 0Hz to 6.5MHz, fully supporting PAL, NTSC, and SECAM standard signals, with the image free from compression encod

Question 31

How to troubleshoot no video output or abnormal picture after device installation and wiring?

Accepted Answer

When no video output or abnormal picture occurs, troubleshoot in the following order: First, confirm that the pair of devices is used correctly, with the transmitter's receive/transmit wavelengths at 1550nm/1310nm and the receiver's at 1310nm/1550nm, and the wavelengths at both ends must correspond one-to-one; Second, use an optical power meter to check the received optical power and compare it with the receiver sensitivity (better than -32dBm, 1310nm) to confirm whether it is within the

Question 32

What is the IDM-VDA100/110/111 1-Channel Video Optical Terminal and in which scenarios is it mainly used?

Accepted Answer

The IDM-VDA100/110/111 1-channel video optical terminal is a single-channel video fiber optic transmission device developed by Beijing Ruiguang Jiyuan Digital Technology Co., Ltd. (Raytrans). The transmitting end samples the video signal output by the camera into a digital signal and transmits it directly over the fiber optic cable, while the receiving end restores it to video output, used for real-time transmission of 1 channel of one-way video in scenarios such as security surveillance. The de

Question 33

How Far Can a 1-Channel Video Optical Terminal Transmit, and How Is Link Distance Calculated?

Accepted Answer

The standard transmission distance of a 1-channel video optical terminal is 20Km, based on single-mode fiber and FC optical port, with wavelengths of 1310nm/1550nm. To determine whether a link is usable, compare the transmit optical power (-15~-8dBm) with the receiver sensitivity (better than -32dBm, 1310nm); the difference between the two is the available optical power margin. In actual engineering, fiber attenuation and connector loss must also be included in the calculation. Fiber mode and in

Question 34

What interfaces does a 1-channel video optical terminal provide, and what services can be transmitted simultaneously over one fiber?

Accepted Answer

The service interfaces of a 1-channel video optical terminal are stacked by model: the video channel uses a BNC interface with input/output impedance of 75Ω (unbalanced); the data channel uses an RJ-45 interface supporting RS-232, RS422 (4-wire), and RS485 (2-wire); the audio channel uses an RJ45 interface with input impedance ADC:100KΩ and output impedance DAC:10KΩ, connected according to port labels. The optical link side features an FC optical port (SC and others customizable), with single-mo

Question 35

Video is normal after installation and wiring, but Ethernet or voice services are not working. How should I troubleshoot?

Accepted Answer

Troubleshooting should be performed in order from the optical path to the ports. First, confirm that the fiber pair is correctly transmitting and receiving at both ends, that there is no break in the optical path, and that the panel status indicator lights show no anomalies after the device is powered on. Then verify that the service interfaces on the transmitting and receiving sides correspond one-to-one, that the two Ethernet groups are not crossed, and that two networks requiring physical iso

Question 36

What Practical Value Does Full-Digital Uncompressed Transmission in Video Optical Terminals Bring to Surveillance Images?

Accepted Answer

Full-digital uncompressed video transmission refers to video signals being sent directly onto the fiber in digital form, without compression encoding in between, so the receiving end restores the original image data. Its direct value lies in three aspects: first, there is no detail loss caused by compression, and both static and dynamic high-resolution images are fully preserved; second, the encoding and decoding stages are eliminated, so the link introduces no additional latency, making it suit

Question 37

What interfaces does the IDM-VNT2204 multi-service video optical terminal provide, and what devices can be connected to each?

Accepted Answer

The video service provides 2 one-way standard-definition video interfaces, which can also be configured as 1 two-way video interface, for connecting surveillance cameras or video matrix service signals. The Ethernet service consists of 2 groups of interfaces, each sharing a 100M wire-speed bandwidth, with each group carrying 2 physical interfaces. The bandwidths of the two groups are not shared, allowing connection to two physically isolated surveillance or office networks. The voice service pro

Question 38

What is the IDM-VNT2204 Multi-service Video Optical Terminal? What Services Can Be Transmitted over One Fiber?

Accepted Answer

The primary function of the IDM-VNT2204 multi-service video optical terminal is to multiplex video, Ethernet, voice, and low-speed data into a single optical fiber for transmission, and then restore them into various service interfaces at the remote end, eliminating the need to stack multiple single-function devices at the site. Its service composition includes: 2 channels of one-way standard-definition video, which can also be configured as 1 channel of bidirectional video, compatible with NTSC

Question 39

Why Can the Two Ethernet Ports of a Multi-Service Video Optical Terminal Achieve Physical Isolation?

Accepted Answer

When multiple Ethernet networks share a single switching channel, the bandwidth is shared and Layer 2 traffic is interconnected, making it difficult to carry two networks that require mutual isolation. The IDM-VNT2204 multi-service video optical terminal allocates an independent 100M line-speed bandwidth to each of the two Ethernet ports on the fiber channel, with each port providing 2 physical interfaces. The two ports do not share bandwidth or exchange data, so they can directly transmit two 1

Question 40

How to troubleshoot service failure after timeslot cross-connection configuration?

Accepted Answer

After time slot cross-connection configuration is completed, if services are not working, first confirm that the cross-connection configuration has been correctly delivered and takes effect, and check the status of the working main control unit and whether the standby main control is ready. Then check whether the E1 cables and connectors are secure and whether the transmit and receive pairs are reversed, and confirm that the line code type and frame structure at the local and remote ends are con

Question 41

When Is the IDM DXC5200 Timeslot Cross-Connect Device the Right Choice?

Accepted Answer

The IDM DXC5200 timeslot cross-connect device is suitable for carrier-grade timeslot cross-connect applications in both private and public networks. When the network requires flexible 64K timeslot scheduling of voice, V.35, RS232 and other services between multiple 2.048Mbps E1 channels, or when service adjustments are frequent and expansion is preferred to be done by modifying only the cross-connect configuration without changing the transmission lines, this device should be given priority cons

Question 42

How Is 64K Timeslot Cross-Connection Implemented Under the PCM30/32 Frame Structure?

Accepted Answer

PCM30/32 is a common frame format for the E1 base group. Each frame contains 32 timeslots, of which 30 timeslots carry voice or data services, timeslot TS0 is used for frame synchronization and alarms, and timeslot TS16 is used for channel-associated signaling. Voice signals are companded per ITU-T G.711 A-law and placed into the corresponding timeslot at 64Kbps, making the 64K timeslot the minimum unit for cross-connection scheduling. The IDM DXC5200 performs cross-connection at the 64K granula

Question 43

What is the IDM DXC5200 Timeslot Cross-Connect Device? What Are Its Main Applications?

Accepted Answer

The IDM DXC5200 timeslot cross-connect device is a cross-connect device based on E1 transmission developed by Beijing Ruiguang Jiyuan Digital Technology Co., Ltd., used to perform 64K timeslot cross-connect and scheduling of voice and data services between 2.048Mbps E1 channels. The device complies with the ITU-T G.703 standard, adopts the PCM30/32 frame structure and HDB3 code, provides E1 interfaces, audio interfaces, as well as V.35 and RS232 data interfaces, and supports channel-associated s

Question 44

What Service Interfaces Does the IDM DXC5200 Provide? What Services Can It Access?

Accepted Answer

The IDM DXC5200 timeslot cross-connect device provides E1 interfaces, audio interfaces, and V.35 and RS232 data interfaces. The E1 interface operates at a 2.048Mbps line rate with HDB3 line coding, conforming to the ITU-T G.703 standard, and can work in either 75Ω coaxial or 120Ω balanced impedance modes. The audio interface accesses voice services such as telephones, while the V.35 and RS232 interfaces access low-speed data services. The service timeslots of all interfaces are uniformly routed

Question 45

What is an E1 line? What are the core knowledge points?

Accepted Answer

E1 Basics　　Frame Structure of the E1 Channel　　In an E1 channel, 8 bits form one timeslot (TS), 32 timeslots form one frame (F), and 16 frames form one multiframe (MF). Within a frame, TS0 is primarily used to carry the frame alignment signal (FAS), CRC-4 (cyclic redundancy check), and remote alarm indication. TS16 mainly carries channel-associated signaling (CAS), the multiframe alignment signal, and the multiframe remote alarm indication. TS1 to TS15 and TS17 to TS31, a total of 30 timeslots, c

Question 46

What is the working principle of the Ethernet switch board?

Accepted Answer

Raytrans Digital Technology Co., Ltd. has launched an Ethernet switch board on the IDM MSTP155-24 platform, which is based on the Spanning Tree Protocol and the Unidirectional Link Protocol. It enables Ethernet switching and achieves ring network protection even under unidirectional link conditions, effectively overcoming the issues in Ethernet ring network protection when a single-direction fiber break occurs in an SDH ring network.The idea behind the Spanning Tree Protocol (STP) topology is th

Question 47

What are the characteristics of optical fiber?

Accepted Answer

Optical fiber is now one of the primary media for data transmission in our daily life and work, and it is indispensable to the development of the Internet. Next, let me walk you through the main characteristics and transmission principles of optical fiber.
Optical fiber transmission offers advantages such as low attenuation, wide frequency bandwidth, strong anti-interference capability, high security, small size, and light weight, giving it incomparable advantages in long-distance transmission a

Question 48

What are the three common types of fiber optic connectors?

Accepted Answer

LC Connector: The LC connector was developed by the renowned Bell Research Institute, utilizing a modular jack (RJ) latch mechanism for easy operation. The dimensions of its ferrule and sleeve are half the size of those used in standard SC and FC connectors, measuring 1.25mm. This allows for increased connector density in optical distribution frames. Currently, LC-type connectors have established a dominant position in single-mode SFF applications, and their use in multimode applications is als

Question 49

What are the common fiber optic connector types?

Accepted Answer

[Fiber Optic Connector Types:](
FC round with threaded coupling, ST bayonet-style round, SC bayonet-style square, LC similar to SC but half the size, PC micro-spherical polished, APC angled at 8° with micro-spherical polishing, MRTJ square, one end with dual-fiber transceiver integrated (mostly used on 3com), fiber optic modules: generally support hot-swapping, GBIC mostly uses SC or ST fiber interfaces, SFP small form-factor GBIC, uses LC type fiber. Single-mode: L, wavelength 1310; single-mode

Question 50

What Is Optical Fiber? What Are Its Application Scenarios?

Accepted Answer

Optical fiber, short for optical waveguide fiber, is a light transmission tool that utilizes the principle of total internal reflection of light within a fiber made of glass or plastic. The optical waveguide fiber was invented by Charles Kao, former president of The Chinese University of Hong Kong.　　The fine optical fiber is enclosed in a plastic sheath, allowing it to bend without breaking. Typically, a transmitting device at one end of the fiber uses a light emitting diode (LED) or a laser bea

Question 51

What are the characteristics and principles of fiber-optic transmission?

Accepted Answer

I. Background of Optical Communication
In today's world, optical fiber communication has become the primary means of communication.
Fiber-optic transmission systems offer the following significant advantages: large capacity and long transmission distance. The theoretical bandwidth of optical fiber can reach 20000 GHz, and the repeaterless transmission distance can reach 50-80 km. Made of glass, it is immune to electromagnetic interference and provides high transmission quality, making it sui

Question 52

What Is the Function and Working Principle of a Fiber Switch?

Accepted Answer

Fiber switches provide the capability to cascade many switches into a large-scale Fabric. By connecting one or more ports of two switches, all ports connected to the switches can see a unique image of the network, and any node on this Fabric can communicate with any other node.
In essence, by cascading switches, it is possible to build a large, virtual switch with distributed advantages, and it can span very large distances. A Fabric built from multiple switches appears as a single Fabric compos

Question 53

What is the working principle and function of a media converter?

Accepted Answer

The rapid advancement of informatization has led to growing demand for multimedia communications such as data, voice, and video. Ethernet broadband access has been elevated to an increasingly important position, and the required capacity of communication networks continues to expand. As a result, optical fiber communication has been widely adopted due to its advantages of large information capacity, good confidentiality, light weight, small size, relay-free operation, and long transmission dista

Question 54

What is the difference between optical fiber and optical cable? What are the common optical fiber connectors?

Accepted Answer

Optical fiber is a medium that transmits information from one end to another. It is a glass or plastic fiber that serves as a transmission medium for the passage of information.
Generally, the terms "optical fiber" and "optical cable" are often confused. Most optical fibers must be covered by several layers of protective structure before use, and the covered cable is called an "optical cable." The protective structure on the outer layer of the optical fiber prevents

Question 55

What are the applications and features of GPON?

Accepted Answer

GPON ApplicationsGPON-related terminal products are largely similar to EPON, with three main application scenarios:(1) FTTH/FTTO-type terminals targeting high-end and commercial users, generally referred to as SFU/SBU-type ONUs. The downstream PON fiber passes through a splitter and connects directly to the user's ONU, with one ONU serving a single user. User data services are uplinked via FE or GE ports, offering high security but at a higher cost, typically for premium and business users.(

Question 56

Top 10 Common FAQs About Optical Terminals

Accepted Answer

What is the main purpose of an optical terminal, and what is its current market price?     Simply put, an optical terminal is a type of optical communication device primarily used to transmit optical signals.     The market price of an optical terminal cannot be quoted arbitrarily. On the market, optical terminal equipment ranges from a few thousand yuan to tens of thousands, or even hundreds of thousands of yuan. Moreover, optical terminals are always us

Question 57

What Are Common Optical Terminal Faults and How to Troubleshoot Them?

Accepted Answer

Understanding Common Optical Terminal Faults at a Glance — Easily Avoid O&M Pitfalls
In scenarios such as security surveillance, power communications, and rail transit, the optical terminal serves as the core device for signal transmission, acting like a "bridge" in the entire communication link, carrying the stable transmission of video, audio, and data signals. Its normal operation directly determines the communication quality and reliability of the entire system. However, during

Question 58

What Does an Optical Terminal Do?

Accepted Answer

The function of an optical terminal: it is primarily a device that converts multiple E1 (a data transmission standard for trunk lines, typically at a rate of 2.048Mbps, adopted in China and Europe) signals into optical signals for transmission (its main role is to achieve electrical-to-optical and optical-to-electrical conversion). The price of an optical terminal varies depending on the number of E1 ports it supports. Generally, the smallest optical terminal can transmit 4 E1 lines, while the l

Question 59

What are the common issues in optical terminal installation and construction?

Accepted Answer

As the fiber optic market continues to mature, the application fields of optical terminals have become increasingly extensive. Moreover, their cost is basically on par with that of cable, and in some cases even lower, making fiber optic transmission increasingly advantageous.
  Analog Optical Terminal Series
  The following scenarios use a one-channel video and one-channel reverse data optical terminal as an example; other models operate on the same principle.

No video image and unable to contr

Question 60

What are the key points for routine maintenance of optical terminals?

Accepted Answer

As the application fields of optical terminals continue to expand, how to maintain and service video optical terminal equipment has become the most concerned issue for maintenance personnel. Based on its R&D experience in optical terminal equipment and after-sales service technology, Raytrans has summarized several key points for optical terminal maintenance.
Power Supply and Installation Environment of Optical Terminals
Power supply is the primary consideration for ensuring the reliability

Question 61

What indicators should be considered when selecting an optical terminal?

Accepted Answer

Indicators for Optical Terminal SelectionI. Optical Terminal Type: Analog Optical Terminal/[Digital Optical Terminal]( Single-mode/Multi-modeII. Transmission Distance: Fiber cable length/Fiber cable link loss (very important)III. Video:　　Number of video channels: 1/2/4/8/16/32/48　　Connection method: Direct connection/Video distributor/Video splitter/Character overlay/Others　　Display method: Monitor/Large screen/TV/OthersIV. Data:　　Number of data channels: 1/2/3/4　　Data type: RS232/RS485/RS422/TT

Question 62

What is the role of an optical terminal in a surveillance system?

Accepted Answer

An optical terminal is a transmission device in an optical communication system, primarily performing optical-electrical conversion and transmission functions. It is generally used in telecommunications, power, surveillance, industrial control, video transmission, and other applications, with wide-ranging use across various industries. The commonly referred to optical terminal is the one used in surveillance systems to transmit integrated information such as video, data, Ethernet, and audio. It

Question 63

What is the difference between an Optical Terminal and a Media Converter?

Accepted Answer

Optical Terminal is a device that converts multiple E1 (a data transmission standard for trunk lines, typically at a rate of 2.048Mbps, adopted in China and Europe) signals into optical signals for transmission. The price of an Optical Terminal varies depending on the number of E1 ports it supports. Generally, the smallest Optical Terminal can transmit 4 E1 channels, while the largest currently available can transmit 4032 E1 channels.
   Media Converter has one end connected to the opt

Question 64

What are the technical advantages of OTN and PTN respectively?

Accepted Answer

Technical Advantages of OTN and PTN
(1) Technical Advantages of OTN
The advantage of OTN lies in its proficiency in addressing ultra-long-distance, ultra-large-bandwidth transmission issues for IP services, providing transmission channels for a large number of large-granularity services such as 2.5 Gbit/s, 10 Gbit/s, and even 40 Gbit/s, which is difficult for PTN to achieve. However, OTN bandwidth allocation is also rigid, resulting in low bandwidth utilization and difficulty in handling smaller

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