COFDM IP wireless data transmitter module
COFDM IP wireless video data transmitter module One-way Ethernet transparent transmission network port Vcan1816
目次
導入
- 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, 帯域幅, 送信電力, 等;
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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:
特徴
- The host computer data is received through the network port, and then the network port data is transmitted.
- データ入力: ネットワークポート, 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, wireless bandwidth, and other modulation parameters (such as protection interval, convolution bitrate, コンスタレーションモード, transmission gain, 等) through the reference serial port.
- COFDM Transmitter Interface (送信): MMCXメス.
- TF card interface, ソフトウェアのアップグレード, and maintenance.
- 電源入力インターフェース (力): 2PIN 2.0mm pitch Phoenix terminal. 電源電圧: 7V～24V.
- Link LED indicator: The light of the work is emitted, and the data is flashed when the data is transmitted usually.
- 電源LEDインジケーター: The power input indicator, the normal power supply is always on.
- Transmitter module size: 73×51mm (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
- 無線帯域幅: 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
仕様
IO
| RF出力 | MMCXメス |
| TTL 3.3V control uart | 4PIN PH1.25mm コネクタ |
| 電源投入 | 2PIN PH2.54mm フェニックス コネクタ |
| イーサネットポート | 4PIN PH1.25mm コネクタ |
| TFカード | ファームウェアアップデートの場合 |
| 電源LED | Red constant light when the device is normally powered |
| リンクLED | Green blinks on transmitting |
変調
| 変調フォーマット | COFDM(DVB-T) |
| キャリア | 2K |
| 帯域幅 | 1MHz～8MHzまで設定可能, 1KHzずつ |
| FEC | 1/2, 2/3, 3/4, 5/6, 7/8 |
| ガードインターバル | 1/32, 1/16, 1/8, 1/4 |
| 星座 | QPSK, 16QAM, 64QAM |
RF送信
| 周波数帯域 | 70MHz~4GHz |
| チューニングステップサイズ | 1KHz |
| 送信電力 | 設定可能, 最大 -5dBm(頻度の影響を受ける) |
監視と制御
制御 UART を介した構成パネルまたはその他のデバイスによる包括的なセットアップ.
温度範囲
フルスペック: -40° ～ +70°C 周囲温度
ストレージ: –40°～+85°C
大きさ
73x51x11mm (基板外のコネクタは含まない)
電力要件
入力範囲: 7～24VDC
消費電力: <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. もちろん, you need to add a bandpass filter to filter out clutter interference and increase PA to transmit a longer range. If you need customization, ご連絡ください.
復調と変調
| 変調フォーマット | COFDM(DVB-T) |
| キャリア | 2K |
| 帯域幅 | 1MHz～8MHzまで設定可能, 1KHzずつ |
| FEC | 1/2, 2/3, 3/4, 5/6, 7/8 |
| ガードインターバル | 1/32, 1/16, 1/8, 1/4 |
| 星座 | QPSK, 16QAM, 64QAM |
RF受信
| 周波数帯域 | 160MHz～860MHz |
| チューニングステップサイズ | 1KHz |
| 感度 | -97±1dBm(帯域幅=8MHz, QPSK, CR=2/3, GI=1/16) for one channel and add 3dBm for two-channel |
RF送信
| 周波数帯域 | 70MHz~4GHz |
| チューニングステップサイズ | 1KHz |
| 送信電力 | 設定可能, 最大 -5dBm(頻度の影響を受ける) |
COFDM wireless transmission system transmission rate calculation
無線通信速度 (air interface rate):
レート(MBps) = (BandWidth(メガヘルツ) * 8.0/7.0) / (1+GI) * 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, 以下のリンクをご確認ください.
エンコーダ 変調器 デコーダ 復調器 モジュールのパラメータ設定手順 COFDM AT コマンド
Receiver Module
Suggestions
- This is a one-way unidirectional transmission system. if you need a two-way bidirectional transmission system, このリンクをチェックしてください. 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 (リピータ) to support a longer transmission range (distances), please choose stronger PA (Power Amplifier) 内部, 例えば, change 1Watts PA to 2.5 ワットまたは 5 ワット.
–160HDMI/AV/イーサネット/USB出力を備えたMHz~860MHz HDビデオCOFDMレシーバーモジュール
The COFDM receiver module is a compact digital diversity receiver with integrated H.264 decoding, 流体および高可動性の用途での使用に適しています. 受信機モジュールは 2 つのアンテナから信号を受け取り、復調性能を大幅に強化し、動作範囲を拡大します。. 受信モジュールは、事前に設定された周波数と帯域幅に従って、着信送信を迅速に見つけて自動的にロックします。. この受信機モジュールは、720p および 1080P の HD を含む幅広い包括的な信号出力を備えています。, ダウンコンバートされた HD CVBS モニタービデオ, および 2 つのアナログオーディオをサポート.
受信機モジュールには、Micro SD カードまたは USB ディスクを使用した DVR 録画機能も含まれています. さらに, 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. これにより、複数のリモート視聴者が同じビデオを同時に監視できるようになります。. 受信機モジュールは、OSDモードでビデオと一緒にビデオ表示画面に文字列を表示することもできます。.
When paired with the Our COFDM transmitter module, 受信機モジュールは包括的な機能を提供します, 高度な状況認識を可能にする、迅速に展開可能なビデオおよびオーディオ ソリューション. 地上と空の両方のモバイル プラットフォームからリアルタイムのライブ ビデオを配信する際に重要な役割を果たすことができます。.
- COFDM復調およびH.264ビデオデコーダ;
- フルHD解像度, 1080P@60fps;
- AES復号化による優れたセキュリティ;
- マイクロSDカードまたはUSBディスクによるDVR録画;
- 内蔵 RTSP サーバーにより、イーサネット経由でのビデオ ストリーミングが可能になります;
- Enables video streaming over a USB host for the remote device;
- OSDモードのビデオ表示画面に文字列の表示をサポート;
- Stable signal transfer in NLOS and high-speed moving;
- 調整可能な動作周波数, と帯域幅.
仕様:
IO
| HDビデオ出力 | HDMI タイプA コネクタ |
| コンポジットビデオ出力 | 6PIN PH2.0mmコネクタ |
| 音声出力 | Embedded HDMI and CVBS |
| RF入力 | Two SMA female 50Ω |
| 電源投入 | 2PIN PH2.54mmコネクタ |
| USBホスト | 4PIN PH2.0mmコネクタ |
| TTL UART data | 3PIN PH1.25mmコネクタ, 3.3V signal |
| TTL UART control | 4PIN PH1.25mmコネクタ, 3.3V signal |
| イーサネット | 6PIN PH2.0mmコネクタ |
| TFカード | TFカードスロット |
| キー&LED | 2*5PIN PH2.0mmコネクタ |
復調
| 復調フォーマット | COFDM(DVB-T) |
| キャリア | 2K |
| 帯域幅 | 1MHz～8MHzまで設定可能, 1KHzずつ |
| FEC | 1/2, 2/3, 3/4, 5/6, 7/8 |
| ガードインターバル | 1/32, 1/16, 1/8, 1/4 |
| 星座 | QPSK, 16QAM, 64QAM |
| ビットレート | 0.5Mbps ～ 31.67Mbps |
RF
| 周波数帯域 | 160MHz～860MHz |
| チューニングステップサイズ | 1KHz |
| 感度 | -97±1dBm(帯域幅=8MHz, QPSK, CR=2/3, GI=1/16) 1 つのチャネルの場合は 3dBm を追加し、2 つのチャネルの場合 |
ビデオとオーディオ
| ビデオ出力 | HDMIとCVBS, イーサネット(RTSP protocol by default, option UDP), USB |
| ビデオフォーマット | 1080Pまたは720P
720*480 60私(NTSC), 720*576 50私(パル) |
| ビデオのデコード | MPEG-4/H.264 AVC |
| 音声出力 | HDMIおよびAVオーディオを内蔵 |
| オーディオデコード | AAC |
| 復号化 | AES256 |
| ストレージ | USB ディスクまたはマイクロ SD カード |
監視と制御
Comprehensive receiver setup with Our Config Panel or Windows PC or other devices via control UART.
温度範囲
フルスペック: 0° ～ +70°C 周囲温度
ストレージ: –40°～+80°C
身体的特徴
Board Dimensions: 80.4*50.8ミリ
電力要件
入力範囲: 9～24VDC
消費電力: <300mA@12V
IO Signals
キー + 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. 受信機は自動的にストレージデバイスをチェックします(マイクロSDカードまたはUSBディスク) 電源を入れ、ストレージデバイスが挿入されるとビデオの録画が開始されます. 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, 長押しすると切り替わります(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：4.0メガヘルツ ; RF, 動作周波数; BW, 帯域幅
QPSK CR：2/3 GI：1/16 ; 星座, FEC, ガードインターバル
空気：3.90Mbps ; 空気, 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
COFDM送信機とペアリング:
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. 送信機の入力から受信機のHDMI画面表示までの映像遅延は約50ms～130msです。.
How to test COFDM IP wireless video data transmitter module?
ethernet modem in one way
よくある質問
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, 以下のリンクをご確認ください
How to test COFDM IP wireless video data transmitter module
いいえ, 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 送信機.
- 質問: I already have Vcan1776, which has a Vcan1746 encoder board at the transmitter module, should I get one more encoder board?
- 答え: 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, ここにあります "1816_update_image_xx_yy.zip" ファイル, 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 - 注記:
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.
はい, this model support the function you need. 下の写真をご確認ください, 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 に 100 キロメートル, with latency under 50 ミリ秒. Customizable core modules are ideal for oil rigs, disaster relief drones, and battlefield communications.