COFDM IP wireless data transmitter module
COFDM IP wireless video data transmitter module One-way Ethernet transparent transmission network port Vcan1816
Table of Contents
Wstęp
- 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, przepustowość łącza, moc transmisji, itp;
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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:
Cechy
- The host computer data is received through the network port, and then the network port data is transmitted.
- Wprowadzanie danych: Port sieciowy, 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, przepustowość sieci bezprzewodowej, and other modulation parameters (such as protection interval, convolution bitrate, tryb konstelacji, transmission gain, itp.) through the reference serial port.
- COFDM Transmitter Interface (Przesyłka): Kobieta MMCX.
- Interfejs karty TF, aktualizacja oprogramowania, and maintenance.
- Interfejs wejściowy zasilania (Moc): 2PIN 2.0mm pitch Phoenix terminal. Napięcie zasilania: 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
- Szerokość pasma bezprzewodowego: 1 ~ 8MHz MHz adjustable, 1KHz step
- 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
Specyfikacja
IO
| Wyjście RF | Kobieta MMCX |
| TTL 3.3V control uart | 4Złącze PIN PH1,25 mm |
| Włącz zasilanie | 2Złącze PIN PH2,54 mm fenix |
| Port Ethernet | 4Złącze PIN PH1,25 mm |
| Karta TF | Do aktualizacji oprogramowania sprzętowego |
| Dioda zasilania | Red constant light when the device is normally powered |
| Dioda łącza | Green blinks on transmitting |
Modulation
| Formaty modulacji | COFDM(DVB-T) |
| Przewoźnicy | 2K |
| Bandwidth | Możliwość konfiguracji w zakresie od 1 MHz do 8 MHz, krok co 1 kHz |
| FEC | 1/2, 2/3, 3/4, 5/6, 7/8 |
| Interwał ochronny | 1/32, 1/16, 1/8, 1/4 |
| Konstelacja | QPSK, 16QAM, 64QAM |
Transmisja radiowa
| Pasma częstotliwości | 70MHz~4GHz |
| Rozmiar kroku strojenia | 1kHz |
| Moc transmisji | Konfigurowalne, maksymalnie -5dBm(w zależności od częstotliwości) |
Monitorowanie i kontrola
Kompleksowa konfiguracja za pomocą naszego panelu konfiguracyjnego lub innego urządzenia poprzez sterowanie uart.
Zakres temperatur
Pełna specyfikacja: -40° do +70°C otoczenia
Składowanie: –40° do +85°C
Wymiary
73x51x11mm (nie licząc złączy poza płytą)
Wymagania dotyczące zasilania
Zakres wejściowy: 7~24VDC
Zużycie energii: <250mA przy 12 V
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. Oczywiście, you need to add a bandpass filter to filter out clutter interference and increase PA to transmit a longer range. Jeśli potrzebujesz dostosowania, skontaktuj się z nami.
Demodulacja i modulacja
| Formaty modulacji | COFDM(DVB-T) |
| Przewoźnicy | 2K |
| Bandwidth | Możliwość konfiguracji w zakresie od 1 MHz do 8 MHz, krok co 1 kHz |
| FEC | 1/2, 2/3, 3/4, 5/6, 7/8 |
| Interwał ochronny | 1/32, 1/16, 1/8, 1/4 |
| Konstelacja | QPSK, 16QAM, 64QAM |
Odebrano RF
| Pasma częstotliwości | 160MHz ~ 860 MHz |
| Rozmiar kroku strojenia | 1kHz |
| Wrażliwość | -97±1dBm(BW=8 MHz, QPSK, CR=2/3, IG=1/16) for one channel and add 3dBm for two-channel |
Transmisja radiowa
| Pasma częstotliwości | 70MHz~4GHz |
| Rozmiar kroku strojenia | 1kHz |
| Moc transmisji | Konfigurowalne, maksymalnie -5dBm(w zależności od częstotliwości) |
COFDM wireless transmission system transmission rate calculation
Szybkość transmisji bezprzewodowej (air interface rate):
Wskaźnik(MB/s) = (BandWidth(MHz) * 8.0/7.0) / (1+żołnierz amerykański) * 1512/2048*log2(constellation point) * 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、ATGD、ATSR、ATGR、ATGB is useful
For the UART AT command operation and format, proszę sprawdzić poniższy link.
Modulator enkodera Moduł dekodera Demodulator Parametr Instrukcje konfiguracji Polecenie COFDM AT
Receiver Module
Suggestions
- This is a one-way unidirectional transmission system. if you need a two-way bidirectional transmission system, proszę sprawdzić ten 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 (przekaźnik) to support a longer transmission range (odległości), please choose stronger PA (Wzmacniacz mocy) wewnątrz, Na przykład, change 1Watts PA to 2.5 Waty lub 5 Waty.
–160Moduł odbiornika wideo HD COFDM MHz ~ 860 MHz z wyjściem HDMI/AV/Ethernet/USB
The COFDM receiver module is a compact digital diversity receiver with integrated H.264 decoding, suitable for use in fluid and high-mobility applications. The receiver module accepts signals from two antennas to significantly enhance the demodulated performance and increase the operating range. The receiver module can find and lock automatically to the incoming transmission quickly according to the pre-set frequency and bandwidth. This receiver module features a range of comprehensive signal outputs including HD at 720p and 1080P, down-converted HD CVBS monitor video, and two analog audios supported.
The receiver module also includes DVR record functionality with a Micro SD card or USB disk. Dodatkowo, 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. This allows multiple remote viewers to monitor the same video simultaneously. The receiver module also supports display characters string on the video display screen with the video together in OSD mode.
When paired with the Our COFDM transmitter module, the receiver module offers a comprehensive, rapidly-deployable video and audio solution that enables advanced situational awareness. It can play an essential role in delivering real-time live video from both ground and airborne mobile platforms.
- COFDM demodulation and H.264 video decoder;
- Rozdzielczość Full HD, 1080P@60fps;
- Great security by AES decryption;
- DVR record with Micro SD card or USB disk;
- Built-in RTSP server enables video streaming over Ethernet;
- Enables video streaming over a USB host for the remote device;
- Supports display characters string on the video display screen in OSD mode;
- Stable signal transfer in NLOS and high-speed moving;
- Regulowana częstotliwość pracy, i przepustowość.
Specyfikacja:
IO
| HD video output | HDMI type A connector |
| Composite video output | 6Złącze PIN PH2,0mm |
| Wyjście audio | Embedded HDMI and CVBS |
| Wejście RF | Two SMA female 50Ω |
| Włącz zasilanie | 2PIN PH2.54mm connector |
| Host USB | 4Złącze PIN PH2,0mm |
| TTL UART data | 3Złącze PIN PH1,25 mm, 3.3V signal |
| Sterowanie TTL UART | 4Złącze PIN PH1,25 mm, 3.3V signal |
| Ethernetu | 6Złącze PIN PH2,0mm |
| Karta TF | Gniazdo karty TF |
| Klawiatura&diody LED | 2*5Złącze PIN PH2,0mm |
Demodulacja
| Demodulation Formats | COFDM(DVB-T) |
| Przewoźnicy | 2K |
| Bandwidth | Możliwość konfiguracji w zakresie od 1 MHz do 8 MHz, krok co 1 kHz |
| FEC | 1/2, 2/3, 3/4, 5/6, 7/8 |
| Interwał ochronny | 1/32, 1/16, 1/8, 1/4 |
| Konstelacja | QPSK, 16QAM, 64QAM |
| Szybkość transmisji | 0.5Mb/s do 31,67 Mb/s |
RF
| Pasma częstotliwości | 160MHz ~ 860 MHz |
| Rozmiar kroku strojenia | 1kHz |
| Wrażliwość | -97±1dBm(BW=8 MHz, QPSK, CR=2/3, IG=1/16) dla jednego kanału i dodaj 3dBm dla dwóch kanałów |
Wideo i dźwięk
| Wyjście wideo | HDMI i CVBS, Ethernetu(RTSP protocol by default, option UDP), USB |
| Formaty wideo | 1080P lub 720P
720*480 60I(NTSC), 720*576 50I(KUMPEL) |
| Dekodowanie wideo | MPEG-4/H.264 AVC |
| Wyjście audio | Wbudowane audio HDMI i AV |
| Audio Decoding | AAC |
| Odszyfrowanie | AES256 |
| Składowanie | Dysk USB lub karta micro SD |
Monitorowanie i kontrola
Comprehensive receiver setup with Our Config Panel or Windows PC or other devices via control UART.
Zakres temperatur
Pełna specyfikacja: 0° do +70°C otoczenia
Składowanie: –40° do +80°C
Charakterystyka fizyczna
Board Dimensions: 80.4*50.8mm
Wymagania dotyczące zasilania
Zakres wejściowy: 9~24VDC
Zużycie energii: <300mA przy 12 V
IO Signals
Klawiatura + diody LED:
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. The receiver will automatically check the storage device(Karta micro SD lub dysk USB) after powering on and start to record video when the storage device is inserted. 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, naciśnij długo, aby przełączyć(więcej niż 1s). The status will be kept after a reboot. Gdy status OSD jest włączony, bez wprowadzania danych OSD z uartu danych, urządzenie wyświetli informacje na ekranie wideo jako:
RF：338.0MHz BW：4.0MHz ; RF, częstotliwość robocza; BW, przepustowość łącza
QPSK CR：2/3 żołnierz amerykański：1/16 ; Konstelacja, FEC, Interwał ochronny
POWIETRZE：3.90Mb/s ; POWIETRZE, szybkość transmisji bezprzewodowej
VBR：3.05Mbps AES OFF ; VBR, bitrate wideo; AES WYŁĄCZONY, Szyfrowanie AES wyłączone.
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 Brak pamięci ; stan nagrywania wideo
Paired with COFDM transmitter:
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. Opóźnienie wideo od momentu wejścia nadajnika do wyświetlenia ekranu HDMI odbiornika wynosi około 50 ms do 130 ms.
How to test COFDM IP wireless video data transmitter module?
ethernet modem in one way
Często zadawane pytania
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, proszę sprawdzić poniższy link
How to test COFDM IP wireless video data transmitter module
NIE, 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 nadajnik.
- Pytanie: I already have Vcan1776, which has a Vcan1746 encoder board at the transmitter module, should I get one more encoder board?
- Odpowiedź: 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" plik, 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 - Notatka:
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.
Yes, this model support the function you need. Proszę sprawdzić poniższy obrazek, 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 Do 100 kilometrów, with latency under 50 milisekundy. Customizable core modules are ideal for oil rigs, disaster relief drones, and battlefield communications.