編碼器 調製器 解碼器 解調器模組 參數配置說明 COFDM AT 指令
Download the Encoder Modulator Decoder Demodulator Module Parameter Configuration Instructions below if you need a PDF file.
Update Record:
| 版本 | 日期 | 描述 |
| 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 | 2016-10-24 2016-11-1 2016-12-26 2017-2-14 2017-2-28 2017-3-27 2017-4-19 2017-5-18 2017-9-12 2018-3-15 2019-6-25 2023-2-24 | Initial version ATDR reply distinguishing module ATSE, ATGE add audio switch Add ATSP protocol Add ATST, ATGT protocol ATGE command add AESfor status acquisition Added ATGB protocol AV and HDMI output control Support for obtaining the current AV output standard Added ATSU, ATGUcommands Added ATOSD, ATSIP, ATGIP commands Added ATSAD, ATGAD commands |
Users may need to modify the configuration parameters of the module during the use of the COFDM modulator and demodulator module. In order to simplify the user’s operation, we design the parameter configuration into a few simple AT commands. The user only needs to use the specified AT command and pass the corresponding parameters to complete the parameter setting of the COFDM module.
Suitable Models
Command Introduction
The AT command for configuring COFDM module parameters starts with “在” and ends with an underscore “_”. Each AT command has several or no parameters, and each AT command has a return value. 詳情, please refer to the introduction of the following commands.
Users can configure the parameters of the module through the configuration serial port (TTL電平, 3.3V) of the COFDM module. For detailed serial port configuration, refer to the figure below. Please use tools such as “Serial Port Debugging Assistant” to send AT commands to the COFDM module, pay attention to the use of 文字, 例如:
Command Classification
The AT commands for configuring COFDM module parameters are mainly divided into the following two categories:
| Query Commands | ATDR, ATG, ATGE, ATGI , ATGR, ATGT, ATGB, ATGU, ATGIP |
| Setting Commands | ATSD, ATSG, 交通運輸管理協會, ATSE, ATSI, ATSO, ATSR, ATSP, ATST, ATSU,ATOSD, ATSIP |
From the perspective of whether to save after power-off, the setting commands can be divided into:
| Power-off Saving Commands | ATSD, ATSE, ATSI, ATSO, ATSR, ATSP, ATST, ATSU, ATSIP |
| Power-off Not Saving Commands | ATSG, 交通運輸管理協會, ATOSD |
According to the configuration transmitter or receiver, the classification is as follows:
| Sender Configuration Commands | ATDR, ATSD, ATG, ATSG, 交通運輸管理協會, ATSE, ATGE, ATSI, ATGI, ATSO, ATSP, ATST, ATGT, ATSU, ATGU, ATOSD |
| Receiver Configuration Commands | ATDR, ATSR, ATGR, ATSP, ATST, ATGT, ATGB, ATSIP, ATGIP |
Command Details
Ping Command
| 格式 | ATDR_ |
| 範圍 | 沒有 |
| 使用 | for the integrated system to check whether the serial port is connected and identify the connected modules. |
| 傳回值 | RCB returns the “device profile” string SUE1 returns “ATDRSUE1 OK” string SHD1 returns “ATDRSHD1 OK” string |
| 評論 | 查詢命令 |
Set Device Command
| 格式 | ATSD $(mimo), $(gi), $(碼率), $ (星座), $(頻率(千赫)), $(bw(千赫)), $(tx1_gain), $(tx2_gain)_ 例子: ATSD0,1,0,0,800000,8000,86.0,86.0_ |
| 範圍 | One Antenna/Dual antenna mimo: 0 mimo disable; 1 mimo enable Guard Interval GI: 0 1/32; 1 1/16; 2 1/8; 3 1/4 Convolution Code Rate: 0 1/2; 1 2 /3; 2 3/4; 3 5/6; 4 7/8; 星座: 0 QPSK; 1 QAM16; 2 QAM64; RCB Carrier Center Frequency(千赫) 200000~2700000(200MHz~2.7GHz, 1千赫茲步長) RC900 Carrier center Frequency(千赫) 750000~930000(750兆赫~930兆赫, 1千赫茲步長) RCB Channel bandwidth bw(千赫) 2000~8000(2MHz~8MHz, 1千赫茲步長) RCB Channel bandwidth bw(千赫) 2000~8000 (2MHz~8MHz, 1千赫茲步長) Transmitting antenna 1 gain tx1_gain 0.0~89.75dB, 0.25dB stepping Transmitting antenna 2 gain tx2_gain 0.0~89.75dB, 0.25dB stepping |
| Return Value | 例如:ATSD0,1,0,0,800000,8000,86.0,86.0_ SISO,胃腸道: 1/16, CR:1/2, MOD: QPSK, 頻率:800000千赫,bw:8000千赫,tx1_gain:86.000000 tx2_gain:86.000000 好的 |
| 注意 | Set command, save when power off. Different Bandwidths, Guard intervals, Convolution code rates, Data rate calculation formulas corresponding to constellations Air interface rate Rate(兆位元每秒) = (頻寬(兆赫) * 8.0/7.0) / (1+胃腸道) * 1512/2048*日誌2(星座點) * 碼率 * 188/204. Taking 8MHz bandwidth as an example, different guard intervals, convolution code rates, data rates corresponding to constellations and required receiving signal-to-noise ratios  |
Set Gain Command
| 格式 | ATSG$( tx1_gain),$( tx1_gain)_ 例子: ATSG85.0,85.0_ |
| 範圍 | tx1_gain: 發射機 1 獲得 tx2_gain: 發射機 2 獲得 |
| 使用 | To dynamically adjust the output power. If the signal SNR/RSSI of the receiver is high, the output power can be reduced through the remote control link. When the SNR/RSSI of the end signal is low, increase the output power (發射機) |
| Return Value, | 例子: ATSG85.0,85.0_set gain 85.000000 85.000000 好的 |
| 評論 | setting command, power off will not save. |
Set Modulation Mode command
| 格式 | ATSM$(gi), $(碼率), $(星座)_ 例子: ATSM1,1,2_ |
| 範圍 | Gard interval GI: 0 1/32; 1 1/16; 2 1/8; 3 1 /4; Convolution code rate: 0 1/2; 1 2/3; 2 3/4; 3 5/6; 4 7/8; 星座: 0 QPSK; 1 QAM16; 2 QAM64 |
| 使用 | Dynamically adjust the air interface rate, the air interface rate can be increased when the distance is short, and the air interface rate can be reduced when the distance is long (發射機) |
| Return Value | 例子:ATSM1,1,2_GI:1/16, CR:2/3, MOD: QAM64, 好的 |
| 評論 | setting command, power off will not save. |
Get Device Status Command
| 格式 | ATGD_ |
| 範圍 | 沒有 |
| 使用 | query the current number of transmit antennas, 保護間隔, convolution code rate, number of constellations, transmit frequency, 頻寬, gain parameters (發射機) |
| Return Value | 例子: ATGD_ SISO, 胃腸道:1 /16, CR: 1/2, MOD: QPSK, 頻率: 800000千赫, bw: 8000千赫, tx1_gain: 86.000000 tx2_gain: 86.000000 好的 |
| 評論 | 查詢命令 |
Set Encoder Command
| 格式 | ATSE$(llc),$(rt),$(位元率) ,$(gop),$(聲音的)_ 例子: ATSE0,0,0.0,0,0_ |
| 範圍 | 1. Enhanced data reliability option llc: 0 disable; 1 使能夠 (requires the receiving end to enable this option at the same time, use in pairs, because more redundant data is added to enhance reliability, the video bit rate of the transmitting end should be set when this option is turned off half of) 2. Real-time priority/quality priority rt: 0 image quality priority; 1 real-time priority; 3. 位元率: 0 let system decide; >0 specify bitrate(float) 4. I frame interval GOP: 0 let system decide; >0 specify GOP 5. Audio encoding option audio: 0 disable; 1 使能夠 |
| 使用 | Used to set encoding parameters (發射機) |
| Return Value | 例子:ATSE0, 0,0.0,0,0_ 模式:0,RT:0,位元率: 0.0Mbps的,gop:0,聲音的:0,好的 |
| 評論 | setting command, save when power is off. |
Get Encoder Command
| 格式 | ATGE_ |
| 範圍 | 沒有 |
| 使用 | querying encoding parameters (sending end) |
| Return Value | 例子:ATGE_MODE:0, RT:0,位元率:4.0Mbps的,gop:10,聲音的:0,aes:0, 好的 |
| 評論 | Query command AES means the current encryption status: 0 disable; 1 使能夠 |
Get Input Command
| 格式 | ATGI_ |
| 範圍 | 沒有 |
| 使用 | query the current camera input parameters (發射機) |
| Return Value | 例子:ATGI_input_size: 1080p, input_rate: 60幀率, sensor_type: hdmi,好的 |
| 評論 | 查詢命令 |
Set Input Command
| 格式 | ATSI$(input_size),$(input_rate)_ 例子: ATSI1080,25_ |
| 範圍 | 1. Input resolution input_size: 0 let the system detect; >0 specify input size 2. Input frame rate input_rate: 0 let the system detect; > 0 specify input fps |
| 使用 | To specify the input resolution and frame rate to meet some special signal sources, or some special application needs (發射機) |
| Return Value | 例子: ATSI1080,25_ Input_size:1080p,input_rate: 25幀率, 好的 |
| 評論 | After the user specifies the input resolution and frame rate through this command, the system will no longer detect the signal source (use with caution). The user can restore the default through the following command: ATSI0,0_Set the command and save it after power-off. |
Set Output Command
| 格式 | ATSO$(output_size),$(output_rate)_ 例子: ATSO720,30_ |
| 範圍 | 1. 發射機: encoding output resolution output_size: 0 equal to input_size; >0 specify output size 2. 接收者: HDMI output resolution (720, 1080) 3. 發射機: encoding output frame rate output_rate: 0 equal to input_rate; >0 specify output_rate (幀率) 4. 接收者: HDMI output frame rate 720p supports frame rate (50, 60); 1080p supports frame rate (24, 25, 30, 50, 60) |
| 使用 | 1. 發射機: Used to specify the encoding output resolution and frame rate to meet the requirements of certain applications for zooming and frame reduction 2. 接收者: used to configure the resolution and frame rate of HDMI output |
| Return Value | 例子: ATSO720,30_ output_size: 720p, output_rate: 30幀率, 好的 |
| 評論 | 1. For HDMI input only, this command is invalid for AV input 2. Output_size <= input_size; output_rate<=input_rate 3. Set the command and save it after the power is off. |
Set Input Sources Command (switch HDMI / CVBS input)
| 格式 | ATSU$(vin),$(艾因)_ 例子: ATSU0,1 _ |
| 範圍 | 1. Video input selection VIN: 0 let the system detect; 1 force CVBS input; 2 force hdmi/SDI input 2. Audio input selection AIN: 0 let the system detect; 1 force analog input |
| 使用 | Used to meet specific application requirements (例子: HDMI/SDI input video, MIC input audio) |
| Return Value | 例子: ATSU0,1_ ATSU0,1 OK |
| 評論 | setting command, power-off save. |
Get User Command
| 格式 | ATGU _ 例子: ATGU_ |
| 範圍 | 沒有 |
| 使用 | To query user-specific configuration |
| Return Value | 例子: ATGU_ ATGU0,1 OK |
| 評論 | 查詢命令 return parameter description please refer to the ATSU command |
Set Receiver Command
| 格式 | ATSR $(頻率), $(bw ), $(llc), $(CVBS)_ 例子: ATSR320000,6000,0,0_ |
| 範圍 | 1. DR2C carrier frequency freq(千赫) 200000~860000(200兆赫~860兆赫, 1千赫茲步長) 2. DR900 carrier center frequency freq(千赫) 200000~1600000(200MHz~1.6GHz, 1千赫茲步長) 3. DR2C channel bandwidth bw(千赫) 2000~8000(2MHz~8MHz, 1千赫茲步長) 4. DR900 channel bandwidth bw(千赫) 3200~8000(3.2MHz~8MHz, 1千赫茲步長) 5. Enhanced data reliability option llc: 0 disable; 1 使能夠 (it is required that the transmitter should also enable this option at the same time, and use it in pairs. Since more redundant data is added to enhance reliability, the video bit rate of the transmitter should be set to when this option is turned off half of) 6. AV output system cvbs: 0 pal; 1 ntsc |
| 使用 | To set the receiver parameter |
| Return Value | 例子: ATSR320000,6000,0,0_ ATSR320000,6000,0,0 OK |
| 評論 | setting command, save when power is off. |
Get Receiver Command
| 格式 | ATGR_ |
| 範圍 | 沒有 |
| ATGR_ | the receiving end parameter |
| Return Value | 例子: ATGR_ ATGR320000,6000,0,aes:0,CVBS:0 好的 |
| 評論 | 1. Query command 2. Aes parameter indicates the current encryption status: 0 disable;1 使能夠 3. CVBS parameter Indicates the current AV output standard: 0 pal;1 ntsc |
Get Bit Error Rate Command
| 格式 | ATGB_ |
| 範圍 | 沒有 |
| 使用 | querying the bit error rate and signal strength of the dual antennas at the receiving end |
| Return Value | 例子: ATGB_ ATGB ber1:0.00% 誤碼率2:0.00% RSSI1 :54 接收訊號強度指示2:53 Lock1:1 Lock2:1 好的 |
| 評論 | 1. Query commands 2. Ber1 and ber2 respectively indicate the bit error rate of each antenna, 範圍從 0.0% 到 100.0% 3. RSSI1 and RSSI2 respectively indicate the signal strength of each antenna, 範圍從 0 到 100 4. Lock1 and Lock2 respectively indicate the signal locking status of each antenna (1 Represents signal lock) |
Set Password Command
| 格式 | ATSP$(密碼), $(密碼)_ 例子: ATSP123456, 123456_ |
| 範圍 | AES key password: 6-數位密碼 (ASCII碼) AES key password: 6-數位密碼 (ASCII碼) (repeat it for confirmation) |
| 使用 | Used to set the AES key of the transceiver (發射器和接收器) |
| Return Value | 例子: ATSP123456_ ATSP123456 OK |
| 評論 | 1. When the password is all 0, AES encryption is turned off. 2. Set the command and save it after powering it off. |
Set Data Transfer Command
| 格式 | ATST$(波特率), $( parity)_ 例子: ATST115200,0_ |
| 範圍 | 1. Baud rate baud rate: 1200、2400、4800、9600、19200、38400、57600、115200 2. Check Code: 0: 沒有任何; 1: 奇怪的; 2: 甚至 |
| 使用 | Used to set the baud rate and parity bit of the serial port for data transparent transmission |
| Return Value | 例子: ATST115200,0_ ATST115200,0 OK |
| 評論 | Set command |
Get Data Transfer Command
| 格式 | ATGT_ |
| 範圍 | 沒有 |
| 使用 | Used to query the baud rate and check code |
| Return Value | 例子: ATGT_ ATGT115200,0 OK |
| 評論 | Query command |
Set IP Address Command
| 格式 | ATSIP$(ip), $(ip)_ 例子: ATSIP192.168.1.215,192.168.1.215_ |
| 參數 | Local IP address Local IP address (repeat to confirm) |
| 使用 | Used to set the receiver IP address |
| Return Value | 例子: ATSIP_192.168.1 .215,192.168.1.215_ ATSIP192.168.1.215 OK |
| 評論 | 1. After setting the IP address, the receiving end needs to be restarted to take effect. 2. Set the command and save it after powering it off. |
Get IP Address Command
| 格式 | ATGIP_ 例子: ATGIP_ |
| 範圍 | 沒有 |
| 使用 | 查詢接收端目前IP位址 |
| 傳回值 | 例子: ATGIP_ ATGIP192.168.0.215 確定 |
| 評論 | 查詢命令 |
OSD Overlay Protocol
| 格式 | ATOSD$(idx), $(x), $(y), $(斯特)_ 例子:ATOSD0,40,20,高度: 100米_ |
| 範圍 | 1. IDX index: 0〜7 (supports OSD overlay for 8 地區) 2. X-coordinate: 0~1919 3. Y座標: 0~1079 4. 斯特: the string to be displayed at the corresponding coordinates (the space symbol is used to clear the display) |
| 使用 | on the video screen.OSD information |
| 傳回值 | 沒有 |
| 評論 | 1. The user specifies the x and y coordinates of the OSD display according to the maximum 1920×1080 像素, 系統會根據實際顯示情況修正座標. 2. The ‘_’ character cannot be contained in the str parameter |
Set Gain To Adjust
| 格式 | ATSAD$(頻率),$(adjust) _ 例子:ATSAD700000,2.5_ |
| 範圍 | wireless central working frequency： 頻率(千赫) 200000~2700000(200MHz~2.7GHz, step: 1千赫) Adjust the value(分貝): ATSD cmd will subtract this value to set the wireless gain |
| 功能 | Specify and adjust the value for the wireless gain setting using by ATSD cmd |
| Feedback | 例子: ATSAD700000,2.5_ freq:700000,adjust:2.50 好的 |
| 評論 | Setting command is still valid when stopping power or resetting. |
Get Gain To Adjust
| 格式 | ATGAD[$(頻率)]_ 例子:ATGAD700000_ |
| 範圍 | wireless central working frequency： 頻率(千赫) 200000~2700000(200MHz~2.7GHz, step: 1千赫) When no parameter provides, it will list all the freq that have adjusted value. |
| 功能 | Inquiry adjust the value for wireless gain setting using ATSD cmd |
| Feedback | 例子: ATGAD700000_ freq:700000,adjust:2.50 OK ATGAD_ freq:700000 750000 好的 |
| 評論 | Inquiry command. |
Serial Port Utility software download
HTTPS://www.alithon.com/downloads
常問問題
1. How can I return to the No Password setting with 000000 indications after the change?
Reset the password to 000000 (one must not be missing) through the Parameter Configuration Panel Board.
or set it through 這 ATSP_command
2. I see that Gain is the output power of the transmitter. Please tell me the range of settings of this parameter. All setting level (獲得) good for linear output operation? Or do you suggest some limited range for better linear operation?
The Gain of the COFDM configuration is the internal Gain, not the actual output power of the transmitter. The internal gain range is 0~89.75dB and the linear output:
1. At around 300~500MHz, the Gain is set to 89.75, and the actual output power of the transmitter module is about -5dBm.
2. At around 1000~1500MHz, the Gain is set to 89.75, and the actual output power of the transmitter module is about -6dBm to -10dBm.
3. I tried to set – B bandwidth (千赫) and E bit rate (Mbps的). When I set E, the new value does not apply. 所以. the E setting is only for monitoring of available bitrate? if I wish to change the E (位元率) I have to change only B (頻寬)? Am I right?
It is not recommended to modify the video bit rate ‘E’ directly, because if the output video bit rate is greater than the wireless air interface rate, the system will not work normally.
預設情況下, the internal video bit rate ‘E’ will be set to 0 for automatic. Customers only need to modify ‘B’ to modify the wireless parameters, and the video bit rate will automatically adapt.
You can also adjust the wireless air interface rate by modifying GI and CR.
For more details on the Encoder Modulator Decoder Demodulator Module, please send an inquiry to us.
COFDM 調製器 解調器模塊 編碼器 解碼器 HDMI CVBS AV 輸入 AES 256 全高清射頻串流媒體
$1,450.00
COFDM 調製器 解調器模塊 編碼器 解碼器 HDMI CVBS AV 輸入 AES 256 全高清射頻串流媒體
目錄
Another side view
COFDM Encoder module, CVBS / HDMI輸入, IP output
For More details about the COFDM encoder board, please visit here
COFDM Encoder module Advantage:
- Ultra-low latency H.265/H.264 audio and video encoding maximum support 1080P@60 real-time video capture and encoding
- HDMI or AV audio and video input, after encoding, the Ethernet port output or Output to wireless module, video encoding bit rate can be dynamically configured
- 支援音訊輸入和音訊解碼輸出
- Support two videos (HDMI+AV) simultaneous input encoding (選項, the default is HDMI or AV encoding, pick one from two input sourcing). )
- 網頁使用者介面 或者 串口 UART AT 命令 for configuration management
COFDM transmitter module
COFDM transmitter module
COFDM modulator-demodulator datasheet download
COFDM demodulator Vcan1776RX-H264 datasheet
The last version of the TX RX board
TX: V6.5.6p
接收: 4.1.2p
COFDM Wireless Video encoder modulator board
SDI+AHD+CVBS Video Encoder and H264 H265 decoder
Some clients also need SDI AHD CVBS video encoder modulator transmitter video decoder demodulator receiver HDMI output. We also have another model Vcan1776-SDI+AHD+CVBS supports these functions.
Which video decoder board supports H264 H265 and super-low latency?
The left-side blue decoder board supports H265 and H264 decoding but does not support low-latency decoding. (Samsun Chipset)
The right-side blackboard supports H264 decoding but supports H264 low-latency decoding. (HiSilicon)
常問問題
問題: What’s the precise RF power output at 1400 兆赫? Can I adjust the output power using software?
回答: The maximum RF power at 1400MHz is about -9 到 -12 分貝, the exact RF power can be set via 參數配置板 or via uart with AT command.
相關貼文
- 如何製作無線視訊接收器的SD升級卡?
- 如何升級COFDM視訊接收器韌體?
- How to change the starting logo of cofdm hd video receiver?
- Formatting the SD card to FAT32 should fix the video recording issue.
- COFDM 接收器配置和流協定指南
- How to overlay send user-defined OSD menu flying data via COFDM wireless video transmitter decoder receiver board
- COFDM Module Parameter Configuration UART AT commands
| 視訊輸入 | HDMI+CVBS, SDI+AHD( 或CVBS) |
|---|
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可客製化
新編碼器產品
| 沒有. | 產品名稱 | Configuration | 主要特點 | 地位 |
|---|---|---|---|---|
| 1 | 雙聲道 USB UVC 可見光視訊編碼器 | 2× USB 輸入 | Supports dual USB camera video encoding, and RTSP streaming; local CVBS/HDMI output; 可切換顯示模式 | 量產 |
| 2 | 雙通道編碼器 (1× USB Visible Light + 1× USB Thermal Imaging camera) | 2× USB 輸入 | Supports dual USB camera (可見的 + thermal) 捕獲, encoding, and RTSP streaming; local CVBS/HDMI output; 可切換顯示模式 | 量產 |
| 3 | RTSP 解碼器 HDMI/CVBS 顯示模組 | HDMI + CVBS輸出 | 最高支援4×1080P@30fps RTSP碼流解碼; 支援視訊串流協議轉發; HDMI/CVBS輸出顯示 | Sample Available |
| 4 | RTSP 解碼器 HDMI/CVBS 顯示模組 4.3"/5" LCD | HDMI輸出 + 液晶屏 | 最高支援4×1080P@30fps RTSP碼流解碼; 協議轉發; HDMI/CVBS輸出顯示 | Debugging |
| 5 | 雙通道編碼器 (1× USB Visible Light + 1× CVBS 模擬) | 1× CVBS + 1× USB UVC input | 雙視頻 (USB + CVBS), 編碼和 RTSP 串流媒體; local CVBS/HDMI output; 可切換顯示模式 | Debugging |
| 6 | 雙通道編碼器 (1× USB UVC + 1× AHD 模擬) | 1× AHD + 1× USB UVC input | 雙視訊擷取 (USB + AHD), 編碼和 RTSP 串流媒體; local CVBS/HDMI output; 可切換顯示模式 | Debugging |
| 7 | 雙通道編碼器 (1× CVBS + 1× AHD Analog Video) | CVBS + AHD 2 視訊輸入 | 雙類比視訊擷取, 編碼和 RTSP 串流媒體; local CVBS/HDMI output; 可切換顯示模式 | Debugging |
| 8 | 雙通道編碼器 (1× CMOS 相機 + 1× USB Thermal Imaging camera) | 1× USB 介面 | 支援CMOS + USB thermal camera capture, 編碼和 RTSP 串流媒體; local CVBS/HDMI output; 可切換顯示模式 | 量產 |
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This COFDM module is the professional-grade backbone our live production team desperately needed! We replaced a bulky $10K rig with this compact unit, streaming zero-latency 1080p video via HDMI/CVBS from drones and rally cars across 3km of urban chaos. The AES-256 encryption kept feeds secure during a high-profile emergency event, while the built-in bit-error correction maintained crystal clarity through concrete structures and rain. Setup took minutes: just linked cameras to AV/HDMI inputs, set RF parameters, and hit stream. For broadcasters, first responders, or industrial inspections needing tamper-proof, long-range HD video with military-grade security, this module delivers flawless performance at a fraction of traditional costs!