编码器 调制器 解码器 解调器模块 参数配置说明 COFDM AT 命令
Download the Encoder Modulator Decoder Demodulator Module Parameter Configuration Instructions below if you need a PDF file.
Update Record:
| 版本 | 日期 | Description |
| 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 | 初始版本 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. 详情, please refer to the introduction of the following commands.
Users can configure the parameters of the module through the configuration serial port (TTL level, 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 文本, 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, 交通运输管理协会, 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, 交通运输管理协会, ATOSD |
According to the configuration transmitter or receiver, the classification is as follows:
| Sender Configuration Commands | ATDR, ATSD, ATG, ATSG, 交通运输管理协会, 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_ |
| 范围 | 没有 |
| 使用 | for the integrated system to check whether the serial port is connected and identify the connected modules. |
| 返回值 | RCB returns the “device profile” string SUE1 returns “ATDRSUE1 OK” string SHD1 returns “ATDRSHD1 OK” string |
| 评论 | 查询命令 |
Set Device Command
| 格式 | ATSD $(mimo), $(gi), $(码率), $ (constellation), $(频率(千赫)), $(bw(千赫)), $(tx1_gain), $(tx2_gain)_ 例子: ATSD0,1,0,0,800000,8000,86.0,86.0_ |
| 范围 | One Antenna/Dual antenna mimo: 0 mimo disable; 1 mimo enable Guard Interval GI: 0 1/32; 1 1/16; 2 1/8; 3 1/4 Convolution Code Rate: 0 1/2; 1 2 /3; 2 3/4; 3 5/6; 4 7/8; Constellation: 0 QPSK; 1 QAM16; 2 QAM64; RCB Carrier Center Frequency(千赫) 200000~2700000(200兆赫~2.7GHz, 1千赫兹步长) RC900 Carrier center Frequency(千赫) 750000~930000(750兆赫~930兆赫, 1千赫兹步长) RCB Channel bandwidth bw(千赫) 2000~8000(2MHz~8MHz, 1千赫兹步长) RCB Channel bandwidth bw(千赫) 2000~8000 (2MHz~8MHz, 1千赫兹步长) Transmitting antenna 1 gain tx1_gain 0.0~89.75dB, 0.25dB stepping Transmitting antenna 2 gain tx2_gain 0.0~89.75dB, 0.25dB stepping |
| Return Value | 例如:ATSD0,1,0,0,800000,8000,86.0,86.0_ SISO,胃肠道: 1/16, CR:1/2, MOD: QPSK, 频率:800000千赫,bw:8000千赫,tx1_gain:86.000000 tx2_gain:86.000000 OK |
| 注意 | 设置命令, 断电保存. Different Bandwidths, 保护间隔, Convolution code rates, Data rate calculation formulas corresponding to constellations Air interface rate Rate(兆比特每秒) = (带宽(兆赫) * 8.0/7.0) / (1+胃肠道) * 1512/2048*日志2(星座点) * 码率 * 188/204. Taking 8MHz bandwidth as an example, different guard intervals, convolution code rates, data rates corresponding to constellations and required receiving signal-to-noise ratios  |
Set Gain Command
| 格式 | ATSG$( tx1_gain),$( tx1_gain)_ 例子: ATSG85.0,85.0_ |
| 范围 | tx1_gain: 发射机 1 获得 tx2_gain: 发射机 2 获得 |
| 使用 | To dynamically adjust the output power. If the signal SNR/RSSI of the receiver is high, the output power can be reduced through the remote control link. When the SNR/RSSI of the end signal is low, increase the output power (发射机) |
| Return Value, | 例子: ATSG85.0,85.0_set gain 85.000000 85.000000 OK |
| 评论 | setting command, power off will not save. |
Set Modulation Mode command
| 格式 | ATSM$(gi), $(码率), $(constellation)_ 例子: ATSM1,1,2_ |
| 范围 | Gard interval GI: 0 1/32; 1 1/16; 2 1/8; 3 1 /4; Convolution code rate: 0 1/2; 1 2/3; 2 3/4; 3 5/6; 4 7/8; Constellation: 0 QPSK; 1 QAM16; 2 QAM64 |
| 使用 | Dynamically adjust the air interface rate, the air interface rate can be increased when the distance is short, and the air interface rate can be reduced when the distance is long (发射机) |
| Return Value | 例子:ATSM1,1,2_GI:1/16, CR:2/3, MOD: QAM64, OK |
| 评论 | setting command, power off will not save. |
Get Device Status Command
| 格式 | ATGD_ |
| 范围 | 没有 |
| 使用 | query the current number of transmit antennas, 保护间隔, convolution code rate, number of constellations, transmit frequency, 带宽, gain parameters (发射机) |
| Return Value | 例子: ATGD_ SISO, 胃肠道:1 /16, CR: 1/2, MOD: QPSK, 频率: 800000千赫, bw: 8000千赫, tx1_gain: 86.000000 tx2_gain: 86.000000 OK |
| 评论 | 查询命令 |
Set Encoder Command
| 格式 | ATSE$(llc),$(rt),$(比特率) ,$(gop),$(声音的)_ 例子: ATSE0,0,0.0,0,0_ |
| 范围 | 1. Enhanced data reliability option llc: 0 disable; 1 使能够 (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. 比特率: 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 使能够 |
| 使用 | Used to set encoding parameters (发射机) |
| Return Value | 例子:ATSE0, 0,0.0,0,0_ 模式:0,RT:0,比特率: 0.0Mbps,gop:0,声音的:0,OK |
| 评论 | setting command, save when power is off. |
Get Encoder Command
| 格式 | ATGE_ |
| 范围 | 没有 |
| 使用 | querying encoding parameters (sending end) |
| Return Value | 例子:ATGE_MODE:0, RT:0,比特率:4.0Mbps,gop:10,声音的:0,aes:0, OK |
| 评论 | Query command AES means the current encryption status: 0 disable; 1 使能够 |
Get Input Command
| 格式 | ATGI_ |
| 范围 | 没有 |
| 使用 | query the current camera input parameters (发射机) |
| Return Value | 例子:ATGI_input_size: 1080p, input_rate: 60帧率, sensor_type: 高清多媒体接口,OK |
| 评论 | 查询命令 |
Set Input Command
| 格式 | ATSI$(input_size),$(input_rate)_ 例子: ATSI1080,25_ |
| 范围 | 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 (发射机) |
| Return Value | 例子: ATSI1080,25_ Input_size:1080p,input_rate: 25帧率, OK |
| 评论 | 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_ |
| 范围 | 1. 发射机: encoding output resolution output_size: 0 equal to input_size; >0 specify output size 2. 接收者: HDMI output resolution (720, 1080) 3. 发射机: encoding output frame rate output_rate: 0 equal to input_rate; >0 specify output_rate (帧率) 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. 发射机: 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帧率, OK |
| 评论 | 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输入)
| 格式 | ATSU$(vin),$(ain)_ 例子: ATSU0,1 _ |
| 范围 | 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 |
| 评论 | setting command, power-off save. |
Get User Command
| 格式 | ATGU _ 例子: ATGU_ |
| 范围 | 没有 |
| 使用 | To query user-specific configuration |
| Return Value | 例子: ATGU_ ATGU0,1 OK |
| 评论 | 查询命令 return parameter description please refer to the ATSU command |
Set Receiver Command
| 格式 | ATSR $(频率), $(bw ), $(llc), $(CVBS)_ 例子: ATSR320000,6000,0,0_ |
| 范围 | 1. DR2C carrier frequency freq(千赫) 200000~860000(200兆赫~860兆赫, 1千赫兹步长) 2. DR900 carrier center frequency freq(千赫) 200000~1600000(200MHz~1.6GHz, 1千赫兹步长) 3. DR2C channel bandwidth bw(千赫) 2000~8000(2MHz~8MHz, 1千赫兹步长) 4. DR900 channel bandwidth bw(千赫) 3200~8000(3.2MHz~8MHz, 1千赫兹步长) 5. Enhanced data reliability option llc: 0 disable; 1 使能够 (it is required that the transmitter should also enable this option at the same time, and use it in pairs. Since more redundant data is added to enhance reliability, the video bit rate of the transmitter should be set to when this option is turned off half of) 6. AV output system cvbs: 0 pal; 1 ntsc |
| 使用 | To set the receiver parameter |
| Return Value | 例子: ATSR320000,6000,0,0_ ATSR320000,6000,0,0 OK |
| 评论 | setting command, save when power is off. |
Get Receiver Command
| 格式 | ATGR_ |
| 范围 | 没有 |
| ATGR_ | the receiving end parameter |
| Return Value | 例子: ATGR_ ATGR320000,6000,0,aes:0,CVBS:0 OK |
| 评论 | 1. Query command 2. Aes parameter indicates the current encryption status: 0 disable;1 使能够 3. CVBS parameter Indicates the current AV output standard: 0 pal;1 ntsc |
Get Bit Error Rate Command
| 格式 | ATGB_ |
| 范围 | 没有 |
| 使用 | querying the bit error rate and signal strength of the dual antennas at the receiving end |
| Return Value | 例子: ATGB_ ATGB ber1:0.00% 误码率2:0.00% RSSI1 :54 接收信号强度指示2:53 Lock1:1 Lock2:1 OK |
| 评论 | 1. Query commands 2. Ber1 and ber2 respectively indicate the bit error rate of each antenna, 范围从 0.0% 至 100.0% 3. RSSI1 and RSSI2 respectively indicate the signal strength of each antenna, 范围从 0 至 100 4. Lock1 and Lock2 respectively indicate the signal locking status of each antenna (1 Represents signal lock) |
Set Password Command
| 格式 | ATSP$(密码), $(密码)_ 例子: ATSP123456, 123456_ |
| 范围 | AES 密钥密码: 6-数字密码 (ASCII) AES 密钥密码: 6-数字密码 (ASCII) (repeat it for confirmation) |
| 使用 | 用于设置收发器的AES密钥 (发射器和接收器) |
| Return Value | 例子: ATSP123456_ ATSP123456 好的 |
| 评论 | 1. 当密码全部 0, AES encryption is turned off. 2. Set the command and save it after powering it off. |
Set Data Transfer Command
| 格式 | ATST$(波特率), $( parity)_ 例子: ATST115200,0_ |
| 范围 | 1. Baud rate baud rate: 1200、2400、4800、9600、19200、38400、57600、115200 2. Check Code: 0: 没有任何; 1: 奇怪的; 2: 甚至 |
| 使用 | Used to set the baud rate and parity bit of the serial port for data transparent transmission |
| Return Value | 例子: ATST115200,0_ ATST115200,0 OK |
| 评论 | 设置命令 |
Get Data Transfer Command
| 格式 | ATGT_ |
| 范围 | 没有 |
| 使用 | Used to query the baud rate and check code |
| Return Value | 例子: ATGT_ ATGT115200,0 OK |
| 评论 | Query command |
Set IP Address Command
| 格式 | ATSIP$(ip), $(ip)_ 例子: ATSIP192.168.1.215,192.168.1.215_ |
| 参数 | Local IP address Local IP address (重复确认) |
| 使用 | Used to set the receiver IP address |
| Return Value | 例子: ATSIP_192.168.1 .215,192.168.1.215_ ATSIP192.168.1.215 OK |
| 评论 | 1. After setting the IP address, the receiving end needs to be restarted to take effect. 2. Set the command and save it after powering it off. |
Get IP Address Command
| 格式 | ATGIP_ 例子: ATGIP_ |
| 范围 | 没有 |
| 使用 | 查询接收端当前IP地址 |
| 返回值 | 例子: ATGIP_ ATGIP192.168.0.215 确定 |
| 评论 | 查询命令 |
OSD Overlay Protocol
| 格式 | ATOSD$(idx), $(X), $(y), $(斯特)_ 例子:ATOSD0,40,20,height: 100米_ |
| 范围 | 1. IDX index: 0~7 (supports OSD overlay for 8 areas) 2. X-coordinate: 0~1919 3. Y coordinate: 0〜1079 4. 斯特: the string to be displayed at the corresponding coordinates (the space symbol is used to clear the display) |
| 使用 | on the video screen.OSD information |
| 返回值 | 没有 |
| 评论 | 1. 用户根据最大1920指定OSD显示的x和y坐标×1080 像素, 系统会根据实际显示情况修正坐标. 2. The ‘_’ character cannot be contained in the str parameter |
Set Gain To Adjust
| 格式 | ATSAD$(频率),$(adjust) _ 例子:ATSAD700000,2.5_ |
| 范围 | wireless central working frequency： 频率(千赫) 200000~2700000(200兆赫~2.7GHz, step: 1千赫) Adjust the value(分贝): ATSD cmd will subtract this value to set the wireless gain |
| Function | Specify and adjust the value for the wireless gain setting using by ATSD cmd |
| 反馈 | 例子: ATSAD700000,2.5_ freq:700000,adjust:2.50 OK |
| 评论 | Setting command is still valid when stopping power or resetting. |
Get Gain To Adjust
| 格式 | ATGAD[$(频率)]_ 例子:ATGAD700000_ |
| 范围 | wireless central working frequency： 频率(千赫) 200000~2700000(200兆赫~2.7GHz, step: 1千赫) When no parameter provides, it will list all the freq that have adjusted value. |
| Function | Inquiry adjust the value for wireless gain setting using ATSD cmd |
| 反馈 | 例子: ATGAD700000_ freq:700000,adjust:2.50 OK ATGAD_ freq:700000 750000 OK |
| 评论 | Inquiry command. |
Serial Port Utility software download
HTTPS://www.alithon.com/downloads
常问问题
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 这 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 (获得) 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). 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 (比特率) I have to change only B (带宽)? 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.
默认情况下, 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 调制解调器模块 编码器解码器 HDMI CVBS AV 输入 AES 256 全高清射频流媒体
$1,450.00
COFDM 调制解调器模块 编码器解码器 HDMI CVBS AV 输入 AES 256 全高清射频流媒体
目录
Another side view
COFDM Encoder module, CVBS / HDMI输入, 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
- 支持音频输入和音频解码输出
- Support two videos (HDMI+AV) simultaneous input encoding (选项, the default is HDMI or AV encoding, pick one from two input sourcing). )
- 网页用户界面 要么 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
RX: 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.
哪款视频解码板支持H264 H265和超低延迟?
哪款视频解码板支持H264 H265和超低延迟?
左侧蓝色解码板支持H265、H264解码，但不支持低延时解码. (三星芯片组)
右侧黑板支持H264解码但支持H264低延迟解码. (海思)
常问问题
问题: 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 至 -12 分贝, the exact RF power can be set via 参数配置板 or via uart with AT command.
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- 如何升级COFDM视频接收器固件?
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- Formatting the SD card to FAT32 should fix the video recording issue.
- COFDM 接收器配置和流协议指南
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- COFDM 模块参数配置 UART AT 命令
| 视频输入 | HDMI+CVBS, SDI+AHD( 或CVBS) |
|---|
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| 没有. | 产品名称 | 组态 | 主要特点 | 地位 |
|---|---|---|---|---|
| 1 | 双通道 USB UVC 可见光视频编码器 | 2× USB 输入 | 支持双USB摄像头视频编码, and RTSP streaming; 本地CVBS/HDMI输出; 可切换显示模式 | 量产 |
| 2 | 双通道编码器 (1× USB Visible Light + 1× USB热像仪) | 2× USB 输入 | 支持双USB摄像头 (可见的 + 热的) 捕获, 编码, and RTSP streaming; 本地CVBS/HDMI输出; 可切换显示模式 | 量产 |
| 3 | RTSP 解码器 HDMI/CVBS 显示模块 | HDMI + CVBS输出 | 最高支持4×1080P@30fps RTSP码流解码; 支持视频流协议转发; HDMI/CVBS输出显示 | 提供样品 |
| 4 | RTSP 解码器 HDMI/CVBS 显示模块 4.3"/5" 液晶显示屏 | HDMI输出 + 液晶屏 | 最高支持4×1080P@30fps RTSP码流解码; 协议转发; HDMI/CVBS输出显示 | 调试 |
| 5 | 双通道编码器 (1× USB Visible Light + 1× CVBS 模拟) | 1× CVBS + 1× USB UVC 输入 | 双视频 (USB + CVBS), 编码和 RTSP 流媒体; 本地CVBS/HDMI输出; 可切换显示模式 | 调试 |
| 6 | 双通道编码器 (1× USB UVC + 1× AHD 模拟) | 1× AHD + 1× USB UVC 输入 | 双视频采集 (USB + AHD), 编码和 RTSP 流媒体; 本地CVBS/HDMI输出; 可切换显示模式 | 调试 |
| 7 | 双通道编码器 (1× CVBS + 1× AHD Analog Video) | CVBS + AHD 2 视频输入 | 双模拟视频采集, 编码和 RTSP 流媒体; 本地CVBS/HDMI输出; 可切换显示模式 | 调试 |
| 8 | 双通道编码器 (1× CMOS 相机 + 1× USB热像仪) | 1× USB 接口 | 支持CMOS + USB热像仪捕捉, 编码和 RTSP 流媒体; 本地CVBS/HDMI输出; 可切换显示模式 | 量产 |
For customized video input/output conversion solutions not listed in our products, 请联系我们获取 OEM/ODM 支持. 我们可以根据您的要求开发定制产品.
iVcan.com –
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. 设置需要几分钟: 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!