COFDM IP wireless data transmitter module
COFDM IP wireless video data transmitter module One-way Ethernet transparent transmission network port Vcan1816
Inhaltsverzeichnis
Einführung
- This ethernet COFDM module supports transmitting the data from the ethernet port to TX RF out.
- Common cofdm transmitters are video signal inputs such as HDMI, CVBS, SDI, or AHD. This one is a transparent transmission module that can support IP cameras and support video and data through cofdm.
- Paired with this COFDM network video data transmitter is a COFDM receiving module, which can realize HDMI and CVBS output, and can also output video to a computer, RTSP, or UDP player through an IP network port RJ45.
- The key role is to use UDP broadcast/multicast to send data.
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COFDM modulation with low latency;
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Stable signal transfer in NLOS and high-speed moving;
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Adjustable working frequency 170-4000Mhz, Bandbreite, Sendeleistung, usw;
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Ethernet connection for IP data UDP broadcast transmission
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Maximum 31.67Mbps wireless transmitting bitrates
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Embedded RTSP video client to get video from IP camera via Ethernet connection
- COFDM wireless transmission module + receive the module, forming a one-way wireless transmission network port transmission link
- The transmitting module receives data through the network port and transmits the data received by the network port in the form of COFDM
- After receiving the data, the receiver receives the demodulation and then outputs it through the network port
Unidirectional COFDM network port wireless transmission module function:
Eigenschaften
- The host computer data is received through the network port, and then the network port data is transmitted.
- Dateneingabe: Network port, support protocol UDP broadcast/multicast. Physical interface: RJ45 seat or 4PIN 1.25mm pitch seat
- CFG-UART: COFDM modulation parameter configuration serial port, 4PIN 1.25mm pitch seat, can be docked to our parameter configuration panel. Users can set the center operating frequency point, drahtlose Bandbreite, and other modulation parameters (such as protection interval, convolution bitrate, constellation mode, transmission gain, usw.) through the reference serial port.
- COFDM Transmitter Interface (Tx): MMCX weiblich.
- TF-Kartenschnittstelle, Software-Upgrade, and maintenance.
- Stromeingangsschnittstelle (Leistung): 2PIN 2.0mm pitch Phoenix terminal. Versorgungsspannung: 7V~24V.
- Link LED indicator: The light of the work is emitted, and the data is flashed when the data is transmitted usually.
- Power LED indicator: The power input indicator, the normal power supply is always on.
- Transmitter module size: 73x51mm (excluding the size of interface devices and connectors protruding from the board edge), thickness less than 15mm.
- Supported COFDM modulation parameters:
- Configurable convolutional encoding ratios: 1/2, 2/3, 3/4, 5/6, 7/8
- Configurable constellation: QPSK/QAM16/QAM64
- IFFT mode: 2K
- Configurable protection intervals: 1/4, 1/8, 1/16, 1/32
- Drahtlose Bandbreite: 1 ~ 8MHz MHz adjustable, 1KHz-Schritt
- Configurable RF output power: -94dbm ~ -5dbm (different operating frequency points, the maximum transmit power is different).
- Center operating frequency point: between 200MHz ~ and 2300MHz can be configured arbitrarily
Spezifikation
IO
| HF-Ausgang | MMCX weiblich |
| TTL 3.3V control uart | 4PIN-PH1,25-mm-Anschluss |
| Strom rein | 2PIN PH2,54 mm Phenix-Stecker |
| Ethernet-Anschluss | 4PIN-PH1,25-mm-Anschluss |
| TF-Karte | Für Firmware-Update |
| Strom geführt | Red constant light when the device is normally powered |
| Link führte | Green blinks on transmitting |
Modulation
| Modulationsformate | COFDM(DVB-T) |
| Träger | 2K |
| Bandbreite | Konfigurierbar von 1 MHz bis 8 MHz, Schritt um 1KHz |
| FEC | 1/2, 2/3, 3/4, 5/6, 7/8 |
| Schutzintervall | 1/32, 1/16, 1/8, 1/4 |
| Konstellation | QPSK, 16QAM, 64QAM |
RF-übertragen
| Frequenzbänder | 70MHz~4GHz |
| Tuning-Schrittgröße | 1KHz |
| Sendeleistung | Konfigurierbar, maximal -5dBm(abhängig von der Häufigkeit) |
Überwachung und Kontrolle
Umfangreiche Einrichtung mit unserem Config Panel oder einem anderen Gerät über Steueruart.
Temperaturbereich
Vollständige Spezifikation: -40° bis +70°C Umgebung
Lager: –40° bis +85°C
Maße
73x51x11mm (Ohne Anschlüsse außerhalb der Platine)
Leistungsbedarf
Eingabebereich: 7~24 VDC
Stromverbrauch: <250mA@12V
I/O Signal
RJ45 ethernet COFDM Transmitter for the IP camera video Transmission
This ethernet IP input COFDM Video transmitter module can receive video from an IP camera via an Ethernet connection with a built-in RTSP client and transmit it. On the COFDM receiving side, our COFDM module has a built-in RTSP Server that allows video streaming over Ethernet for remote software or hardware decoders.
How to use it as the COFDM Relay repeater module?
This module already has a TX transmission function. If you add a dual-antenna receiving module and combine them, you can form a COFDM relay/repeater module. Natürlich, you need to add a bandpass filter to filter out clutter interference and increase PA to transmit a longer range. If you need customization, please contact us.
Demodulation und Modulation
| Modulationsformate | COFDM(DVB-T) |
| Träger | 2K |
| Bandbreite | Konfigurierbar von 1 MHz bis 8 MHz, Schritt um 1KHz |
| FEC | 1/2, 2/3, 3/4, 5/6, 7/8 |
| Schutzintervall | 1/32, 1/16, 1/8, 1/4 |
| Konstellation | QPSK, 16QAM, 64QAM |
RF empfangen
| Frequenzbänder | 160MHz ~ 860 MHz |
| Tuning-Schrittgröße | 1KHz |
| Empfindlichkeit | -97±1dBm(Bandbreite = 8 MHz, QPSK, CR=2/3, GI=1/16) for one channel and add 3dBm for two-channel |
RF-übertragen
| Frequenzbänder | 70MHz~4GHz |
| Tuning-Schrittgröße | 1KHz |
| Sendeleistung | Konfigurierbar, maximal -5dBm(abhängig von der Häufigkeit) |
COFDM wireless transmission system transmission rate calculation
Drahtlose Übertragungsrate (air interface rate):
Rate(MBit/s) = (Bandbreite(MHz) * 8.0/7.0) / (1+GI) * 1512/2048*log2(Konstellationspunkt) * code_rate * 188/204.
Take the 8MHz bandwidth as an example of different protection intervals, convolutional bitrates, data rates corresponding to constellations, and the required received signal-to-noise ratio:
UART AT Command
ATDR、ATSD、ATSG、ATSM、ATG、ATSR、ATGR、ATGB is useful
For the UART AT command operation and format, Bitte überprüfen Sie den folgenden Link.
Encoder Modulator Decoder Demodulator Modul Parameterkonfigurationsanweisungen COFDM AT-Befehl
Receiver Module
Suggestions
- This is a one-way unidirectional transmission system. if you need a two-way bidirectional transmission system, Bitte überprüfen Sie diesen Link. https://ivcan.com/t/two-ways/ or https://ivcan.com/ru/p/mini-cofdm-wireless-ethernet-transmission-module-rj45/
- This is only a data transmission system, if you need video+data transmission, please look details of these modules, https://ivcan.com/p/modulator-demodulator-module-encoder-decoder-hdmi-cvbs/
- If you need a relay (Repeater) to support a longer transmission range (distances), please choose stronger PA (Leistungsverstärker) inside, zum Beispiel, change 1Watts PA to 2.5 Watt bzw 5 Watt.
–160MHz~860 MHz HD-Video-COFDM-Empfängermodul mit HDMI/AV/Ethernet/USB-Ausgang
The COFDM receiver module is a compact digital diversity receiver with integrated H.264 decoding, Geeignet für den Einsatz in flüssigen und hochmobilen Anwendungen. Das Empfängermodul empfängt Signale von zwei Antennen, um die demodulierte Leistung deutlich zu verbessern und die Reichweite zu erhöhen. Das Empfängermodul kann die eingehende Übertragung entsprechend der voreingestellten Frequenz und Bandbreite schnell finden und automatisch darauf zugreifen. Dieses Empfängermodul verfügt über eine Reihe umfassender Signalausgänge, darunter HD mit 720p und 1080P, herunterkonvertiertes HD-CVBS-Monitorvideo, and two analog audios supported.
Das Empfängermodul verfügt außerdem über eine DVR-Aufzeichnungsfunktion mit einer Micro-SD-Karte oder einem USB-Datenträger. Zusätzlich, the receiver module has a built-in RTSP server that enables video streaming over Ethernet for remote software or hardware decoders. And the receiver module also enables video streaming over USB for remote Android device decoders like smartphones or Android PAD. Dadurch können mehrere Remote-Zuschauer gleichzeitig dasselbe Video überwachen. Das Empfängermodul unterstützt auch die Anzeige von Zeichenfolgen auf dem Videobildschirm zusammen mit dem Video im OSD-Modus.
When paired with the Our COFDM transmitter module, Das Empfängermodul bietet einen umfassenden, schnell einsetzbare Video- und Audiolösung, die ein erweitertes Situationsbewusstsein ermöglicht. Es kann eine wesentliche Rolle bei der Bereitstellung von Echtzeit-Live-Videos sowohl von mobilen Plattformen am Boden als auch in der Luft spielen.
- COFDM-Demodulation und H.264-Videodecoder;
- Full-HD-Auflösung, 1080P@60fps;
- Große Sicherheit durch AES-Entschlüsselung;
- DVR-Aufnahme mit Micro-SD-Karte oder USB-Festplatte;
- Der integrierte RTSP-Server ermöglicht Video-Streaming über Ethernet;
- Enables video streaming over a USB host for the remote device;
- Unterstützt die Anzeige von Zeichenfolgen auf dem Videobildschirm im OSD-Modus;
- Stable signal transfer in NLOS and high-speed moving;
- Einstellbare Arbeitsfrequenz, und Bandbreite.
Spezifikation:
IO
| HD-Videoausgabe | HDMI-Typ-A-Anschluss |
| Composite-Video-Ausgabe | 6PIN-PH2,0-mm-Stecker |
| Audioausgabe | Embedded HDMI and CVBS |
| HF-Eingang | Two SMA female 50Ω |
| Strom rein | 2PIN PH2.54mm connector |
| USB-Host | 4PIN-PH2,0-mm-Stecker |
| TTL UART data | 3PIN PH1,25-mm-Stecker, 3.3V signal |
| TTL-UART-Steuerung | 4PIN PH1,25-mm-Stecker, 3.3V signal |
| Ethernet | 6PIN-PH2,0-mm-Stecker |
| TF-Karte | TF-Kartensteckplatz |
| Schlüssel&LEDs | 2*5PIN-PH2,0-mm-Stecker |
Demodulation
| Demodulationsformate | COFDM(DVB-T) |
| Träger | 2K |
| Bandbreite | Konfigurierbar von 1 MHz bis 8 MHz, Schritt um 1KHz |
| FEC | 1/2, 2/3, 3/4, 5/6, 7/8 |
| Schutzintervall | 1/32, 1/16, 1/8, 1/4 |
| Konstellation | QPSK, 16QAM, 64QAM |
| Bitraten | 0.5Mbit/s bis 31,67 Mbit/s |
RF
| Frequenzbänder | 160MHz ~ 860 MHz |
| Tuning-Schrittgröße | 1KHz |
| Empfindlichkeit | -97±1dBm(Bandbreite = 8 MHz, QPSK, CR=2/3, GI=1/16) für einen Kanal und addieren Sie 3 dBm für zwei Kanäle |
Video und Audio
| Videoausgabe | HDMI und CVBS, Ethernet(RTSP protocol by default, option UDP), USB |
| Videoformate | 1080P oder 720P
720*480 60ICH(NTSC), 720*576 50ICH(KUMPEL) |
| Videodekodierung | MPEG-4/H.264 AVC |
| Audioausgabe | Integriertes HDMI und AV-Audio |
| Audio-Dekodierung | AAC |
| Entschlüsselung | AES256 |
| Lager | USB-Festplatte oder Micro-SD-Karte |
Überwachung und Kontrolle
Comprehensive receiver setup with Our Config Panel or Windows PC or other devices via control UART.
Temperaturbereich
Vollständige Spezifikation: 0° bis +70°C Umgebung
Lager: –40° bis +80°C
Physikalische Eigenschaften
Board Dimensions: 80.4*50.8Millimeter
Leistungsbedarf
Eingabebereich: 9~24 VDC
Stromverbrauch: <300mA@12V
IO Signals
Schlüssel + LEDs:
The receiver module has a 2*5PIN PH2.0mm connector which provides “keys + LEDs” signals. It is designed for customers who want to expand LEDs and keys to their cases.
PWR led signal: this two-pin can connect to an led for the power indicator, and constant light when the device is normally powered.
The link led signal: this two-pin can connect to an led for a wireless link indicator, which blinks when the video stream is received.
REC led signal: this two-pin can connect to an led for a record indicator, and constant light when video recording.
REC key signal: this two-pin can connect to a button for the switch of video recording, and a short press to change its status. Der Receiver überprüft automatisch das Speichergerät(Micro-SD-Karte oder USB-Stick) nach dem Einschalten und beginnt mit der Videoaufnahme, wenn das Speichergerät eingelegt wird. Just press it to stop or record again.
OSD key: this two-pin can connect to a button for turning on/off the status of the OSD displaying, lange drücken, um zu wechseln(more than 1s). The status will be kept after a reboot. When the OSD status is on without any OSD data input from the data uart, the device will display information on the video screen as:
RF：338.0MHz BW：4.0MHz ; RF, Arbeitsfrequenz; BW, Bandbreite
QPSK CR：2/3 GI：1/16 ; Konstellation, FEC, Schutzintervall
LUFT：3.90Mbps ; LUFT, wireless transmitting bitrates
VBR：3.05Mbps AES OFF ; VBR, video bitrates; AES OFF, AES encryption turned off.
SIG1：27 SIG2：22 ; SIG1, the signal intensity of antenna 1; SIG2, the signal intensity of antenna 2
ber1：0.14% ber2：100.00% ; ber1, bit error rate of antenna 1; ber2, bit error rate of antenna 2
REC OFF No Storage ; video recording status
Gepaart mit COFDM-Sender:
The default normal features of the two-antenna Wireless receiver module can be paired with all of Our H.264 transmitter modules. The HD video latency from its inputting of the transmitter to the HDMI screen displaying of the receiver is about 200~250ms.
Our two-antenna COFDM Wireless Receiver module can also be paired with our COFDM transmitter module for the lowest video latency application when manufactured with specified firmware. The specified firmware enables proprietary H.264 video compression/decompression only using p-frames for the lowest latency. Die Videolatenz von der Eingabe des Senders bis zur HDMI-Bildschirmanzeige des Empfängers beträgt etwa 50 ms bis 130 ms.
How to test COFDM IP wireless video data transmitter module?
ethernet modem in one way
FAQs
Please note that this network transparent transmission device is one-way transmission, it can only realize UDP broadcast function, although there is an RJ45 network port, but because it is not two-way transmission, it cannot realize the ping command, so even if you want to connect an IP camera, you need special customization IP cameras, because ordinary IP cameras need two-way transmission equipment.
How to test this network transparent transmission device, Bitte überprüfen Sie den folgenden Link
How to test COFDM IP wireless video data transmitter module
NEIN, just net transfer via IP ethernet RJ45 input.
- If you want to test the video transfer, maybe you need an encoder board Vcan1746, transfer HDMI / CVBS video to IP stream, then connect the 1816 Sender.
- Frage: I already have Vcan1776, which has a Vcan1746 encoder board at the transmitter module, should I get one more encoder board?
- Antworten: Although the encoder board of Vcan1776 can be reused. It needs to disassemble the Vcan1776 RF module, then connect the network port adapter cable, and change the different firmware. It is not recommended to do this. It is recommended that you purchase another separate encoder board.
- The voltage range of TX RX is 7~24V.
- At 12V power supply, use an adapter with a maximum of 1A or more.
- Prepare a formattedFAT32format Micro SD card
fat32-format - Unzip the upgrade file from our verify and send to you, Here is "1816_update_image_xx_yy.zip" Datei, and copy it to the root directory of the Micro SD card, pay attention to keep the directory structure unchanged (there is a flash folder in the root directory of the Micro SD card, and there is an app folder in it).
one-way ethernet transparent transmission moudle firmware upgrade - Insert the Micro SD card into the Vcan1816 module, power on and wait for the red light on the board to flash, indicating that the upgrade is successful.
COFDM IP wireless video data transmitter module One-way Ethernet transparent transmission network port upgrade firmware - Notiz:
Under normal circumstances, the update will be completed within 30s after power-on (the red light flashes). If the red light does not flash for a long time after power-on, please check the connection of Micro SD and try power-on again.
Ja, this model support the function you need. Bitte überprüfen Sie das Bild unten, we have two solutions for you. The same TX module, there are optional RX1 or RX2 for you.
- At the above picture, TX module is only RJ45 ethernet data input, no video input, so there is no any encoder function.
- RX1 is added 2x RF demodulator board on the TX module. So the cost is higher than TX module. (one more top board)
- RX2 has same function, but which no TX transmitting function, it is only bottom decoder board + 2xRF demodulator board. It has RJ45 ethernet data port. So it can total meet your demand. And as the board has mass produce and cost can share and down.
Konstantin –
The COFDM IP wireless video transmitter vcan1816 delivers exceptional performance! Its one-way Ethernet transparency ensures seamless HD video/data transmission with ultra-low latency. Robust signal stability in challenging environments impressed us, while the plug-and-play network port simplified integration. Reliable beyond expectations for industrial/outdoor applications – a game-changer for real-time remote monitoring systems!
John –
This COFDM module provides reliable IP video and data transmission over distances of 10 nach 100 Kilometer, with latency under 50 Millisekunden. Customizable core modules are ideal for oil rigs, disaster relief drones, and battlefield communications.