Encoder Modulator Decoder Demodulator Module Parameter Configuration Instructions COFDM AT Command
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Update Record:
Version | Date | Описание |
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 “AT” and ends with an underscore “_”. Each AT command has several or no parameters, and each AT command has a return value. For details, please refer to the introduction of the following commands.
Users can configure the parameters of the module through the configuration serial port (TTL level, 3.3- Ын) 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 text, for example:
- ommand Classification
The AT commands for configuring COFDM module parameters are mainly divided into the following two categories:
Query Commands | ATDR, ATGD, ATGE, ATGI , ATGR, ATGT, ATGB, ATGU, ATGIP |
Setting Commands | ATSD, ATSG, ATSM, 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, ATSM, ATOSD |
According to the configuration transmitter or receiver, the classification is as follows:
Sender Configuration Commands | ATDR, ATSD, ATGD, ATSG, ATSM, 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
Форматэн | ATDR_ |
Параметръёсты | Ӧвӧл |
Уже кутыны | for the integrated system to check whether the serial port is connected and identify the connected modules. |
Return value | RCB returns the “device profile” string SUE1 returns “ATDRSUE1 OK” string SHD1 returns “ATDRSHD1 OK” string |
Замечаниоссэ | query command |
Set Device Command
Форматэн | ATSD $(mimo), $(gi), $(code_rate), $ (constellation), $(freq(KHz)), $(bw(KHz)), $(tx1_gain), $(tx2_gain)_ Example: ATSD0,1,0,0,800000,8000,86.0,86.0_ |
Параметръёсты | One Antenna/Dual antenna mimo: 0 mimo disable; 1 mimo enable Guard Interval GI: 0 1/32; 1 1/16; 2 1/8; 3 1/4 Convolution Code Rate: 0 1/2; 1 2 /3; 2 3/4; 3 5/6; 4 7/8; Кизилиос: 0 ФМ; 1 QAM16; 2 QAM64; RCB Carrier Center Frequency(kHz) 200000~2700000(200MHz~2.7GHz, 1KHz step) RC900 Carrier center Frequency(kHz) 750000~930000(750MHz~930MHz, 1KHz step) RCB Channel bandwidth bw(KHz) 2000~8000(2MHz~8MHz, 1KHz step) RCB Channel bandwidth bw(KHz) 2000~8000 (2MHz~8MHz, 1KHz step) Transmitting antenna 1 gain tx1_gain 0.0~89.75dB, 0.25dB stepping Transmitting antenna 2 gain tx2_gain 0.0~89.75dB, 0.25dB stepping |
Return Value | кылсярысь:ATSD0,1,0,0,800000,8000,86.0,86.0_ SISO,GI: 1/16, CR:1/2, MOD: ФМ, freq:800000KHz,bw:8000KHz,tx1_gain:86.000000 tx2_gain:86.000000 ӜОГЕН |
Валэктон | Set command, save when power off. Different Bandwidths, Guard intervals, Convolution code rates, Data rate calculation formulas corresponding to constellations Air interface rate Rate(MBps) = (Пропускной быгатонлыкъёслы(МГц) * 8.0/7.0) / (1+GI) * 1512/2048*log2(constellation point) * code_rate * 188/204. Taking 8MHz bandwidth as an example, different guard intervals, convolution code rates, data rates corresponding to constellations and required receiving signal-to-noise ratios |
Set Gain Command
Форматэн | ATSG$( tx1_gain),$( tx1_gain)_ Example: ATSG85.0,85.0_ |
Параметръёсты | tx1_gain: Transmitter 1 gain tx2_gain: Transmitter 2 gain |
Уже кутыны | To dynamically adjust the output power. If the signal SNR/RSSI of the receiver is high, the output power can be reduced through the remote control link. When the SNR/RSSI of the end signal is low, increase the output power (передатчик) |
Return Value, | Example: ATSG85.0,85.0_set gain 85.000000 85.000000 ӜОГЕН |
Замечаниоссэ | setting command, power off will not save. |
Set Modulation Mode command
Форматэн | ATSM$(gi), $(code_rate), $(constellation)_ Example: ATSM1,1,2_ |
Параметръёсты | Gard interval GI: 0 1/32; 1 1/16; 2 1/8; 3 1 /4; Convolution code rate: 0 1/2; 1 2/3; 2 3/4; 3 5/6; 4 7/8; Кизилиос: 0 ФМ; 1 QAM16; 2 QAM64 |
Уже кутыны | Dynamically adjust the air interface rate, the air interface rate can be increased when the distance is short, and the air interface rate can be reduced when the distance is long (передатчик) |
Return Value | Example:ATSM1,1,2_GI:1/16, CR:2/3, MOD: QAM64, ӜОГЕН |
Замечаниоссэ | setting command, power off will not save. |
Жадемet Device Status Command
Форматэн | ATGD_ |
Параметръёсты | Ӧвӧл |
Уже кутыны | query the current number of transmit antennas, защитный кусыпъёс , convolution code rate, number of constellations, transmit frequency, bandwidth, gain parameters (передатчик) |
Return Value | Example: ATGD_ SISO, GI:1 /16, CR: 1/2, MOD: ФМ, freq: 800000KHz, bw: 8000KHz, tx1_gain: 86.000000 tx2_gain: 86.000000 ӜОГЕН |
Замечаниоссэ | query command |
Set Encoder Command
Форматэн | ATSE$(llc),$(rt),$(bitrate) ,$(gop),$(audio)_ Example: ATSE0,0,0.0,0,0_ |
Параметръёсты | 1. Enhanced data reliability option llc: 0 disable; 1 enable (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. Bitrate: 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 enable |
Уже кутыны | Used to set encoding parameters (Transmitter) |
Return Value | Example:ATSE0, 0,0.0,0,0_ Режимен:0,RT:0,bitrate: 0.0Мбит / - ысь,gop:0,audio:0,ӜОГЕН |
Замечаниоссэ | setting command, save when power is off. |
Get Encoder Command
Форматэн | ATGE_ |
Параметръёсты | Ӧвӧл |
Уже кутыны | querying encoding parameters (sending end) |
Return Value | Example:ATGE_MODE:0, RT:0,bitrate:4.0Мбит / - ысь,gop:10,audio:0,aes:0, ӜОГЕН |
Замечаниоссэ | Query command AES means the current encryption status: 0 disable; 1 enable |
Get Input Command
Форматэн | ATGI_ |
Параметръёсты | Ӧвӧл |
Уже кутыны | query the current camera input parameters (передатчик) |
Return Value | Example:ATGI_input_size: 1080п, input_rate: 60фпс-эзлэн, sensor_type: hdmi,ӜОГЕН |
Замечаниоссэ | query command |
Set Input Command
Форматэн | ATSI$(input_size),$(input_rate)_ Example: ATSI1080,25_ |
Параметръёсты | 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 |
Уже кутыны | To specify the input resolution and frame rate to meet some special signal sources, or some special application needs (передатчик) |
Return Value | Example: ATSI1080,25_ Input_size:1080п,input_rate: 25фпс-эзлэн, ӜОГЕН |
Remarks | 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
Форматэн | ATSO$(output_size),$(output_rate)_ Example: ATSO720,30_ |
Параметръёсты | 1. Transmitter: encoding output resolution output_size: 0 equal to input_size; >0 specify output size 2. Приёмникъёс: HDMI output resolution (720, 1080) 3. Transmitter: encoding output frame rate output_rate: 0 equal to input_rate; >0 specify output_rate (фпс-эзлэн) 4. Приёмникъёс: HDMI output frame rate 720p supports frame rate (50, 60); 1080p supports frame rate (24, 25, 30, 50, 60) |
Уже кутыны | 1. Transmitter: Used to specify the encoding output resolution and frame rate to meet the requirements of certain applications for zooming and frame reduction 2. Приёмникъёс: used to configure the resolution and frame rate of HDMI output |
Return Value | Example: ATSO720,30_ output_size: 720п, output_rate: 30фпс-эзлэн, ӜОГЕН |
Remarks | 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 / Пырон cvbs сигнал)
Форматэн | ATSU$(vin),$(ain)_ Example: ATSU0,1 _ |
Параметръёсты | 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 |
Уже кутыны | Used to meet specific application requirements (Example: HDMI/SDI input video, MIC input audio) |
Return Value | Example: ATSU0,1_ ATSU0,1 OK |
Замечаниоссэ | setting command, power-off save. |
Get User Command
Форматэн | ATGU _ Example: ATGU_ |
Параметръёсты | Ӧвӧл |
Уже кутыны | To query user-specific configuration |
Return Value | Example: ATGU_ ATGU0,1 OK |
Замечаниоссэ | query command return parameter description please refer to the ATSU command |
Set Receiver Command
Форматэн | ATSR $(freq), $(bw ), $(llc), $(cvbs)_ Example: ATSR320000,6000,0,0_ |
Параметръёсты | 1. DR2C carrier frequency freq(KHz) 200000~860000(200MHz~860MHz, 1KHz step) 2. DR900 carrier center frequency freq(KHz) 200000~1600000(200MHz~1.6GHz, 1KHz step) 3. DR2C channel bandwidth bw(KHz) 2000~8000(2MHz~8MHz, 1KHz step) 4. DR900 channel bandwidth bw(KHz) 3200~8000(3.2MHz~8MHz, 1KHz step) 5. Enhanced data reliability option llc: 0 disable; 1 enable (it is required that the transmitter should also enable this option at the same time, and use it in pairs. Since more redundant data is added to enhance reliability, the video bit rate of the transmitter should be set to when this option is turned off half of) 6. AV output system cvbs: 0 pal; 1 ntsc |
Уже кутыны | To set the receiver parameter |
Return Value | example: ATSR320000,6000,0,0_ ATSR320000,6000,0,0 OK |
Замечаниоссэ | setting command, save when power is off. |
Get Receiver Command
Форматэн | ATGR_ |
Параметръёсты | Ӧвӧл |
ATGR_ | the receiving end parameter |
Return Value | Example: ATGR_ ATGR320000,6000,0,aes:0,cvbs:0 ӜОГЕН |
Замечаниоссэ | 1. Query command 2. Aes parameter indicates the current encryption status: 0 disable;1 enable 3. CVBS parameter Indicates the current AV output standard: 0 pal;1 ntsc |
Get Bit Error Rate Command
Форматэн | ATGB_ |
Параметръёсты | Ӧвӧл |
Уже кутыны | querying the bit error rate and signal strength of the dual antennas at the receiving end |
Return Value | Example: ATGB_ ATGB ber1:0.00% ber2:0.00% RSSI1 :54 RSSI2:53 Lock1:1 Lock2:1 ӜОГЕН |
Remarks | 1. Query commands 2. Ber1 and ber2 respectively indicate the bit error rate of each antenna, ranging from 0.0% - 100.0% 3. RSSI1 and RSSI2 respectively indicate the signal strength of each antenna, ranging from 0 - 100 4. Lock1 and Lock2 respectively indicate the signal locking status of each antenna (1 Represents signal lock) |
Set Password Command
Форматэн | ATSP$(password), $(password)_ Example: ATSP123456, 123456_ |
Параметръёсты | AES key password: 6-digit password (ASCII) AES key password: 6-digit password (ASCII) (repeat it for confirmation) |
Уже кутыны | Used to set the AES key of the transceiver (приёмникъёс но передатчик) |
Return Value | Example: ATSP123456_ ATSP123456 OK |
Замечаниоссэ | 1. When the password is all 0, AES encryption is turned off. 2. Set the command and save it after powering it off. |
Set Data Transfer Command
Форматэн | ATST$(baud rate), $( parity)_ Example: ATST115200,0_ |
Параметръёсты | 1. Baud rate baud rate: 1200、2400、4800、9600、19200、38400、57600、115200 2. Check Code: 0: None; 1: Odd; 2: Even |
Уже кутыны | Used to set the baud rate and parity bit of the serial port for data transparent transmission |
Return Value | Example: ATST115200,0_ ATST115200,0 OK |
Remarks | Set command |
Get Data Transfer Command
Форматэн | ATGT_ |
Параметръёсты | Ӧвӧл |
Уже кутыны | Used to query the baud rate and check code |
Return Value | Example: ATGT_ ATGT115200,0 OK |
Remarks | Query command |
Set IP Address Command
Форматэн | ATSIP$(ip), $(ip)_ Example: ATSIP192.168.1.215,192.168.1.215_ |
Parameters | Local IP address Local IP address (repeat to confirm) |
Уже кутыны | Used to set the receiver IP address |
Return Value | Example: ATSIP_192.168.1 .215,192.168.1.215_ ATSIP192.168.1.215 OK |
Remarks | 1. After setting the IP address, the receiving end needs to be restarted to take effect. 2. Set the command and save it after powering it off. |
Get IP Address Command
Форматэн | ATGIP_ Example: ATGIP_ |
Параметръёсты | Ӧвӧл |
Уже кутыны | to query the current IP address of the receiving end |
Return value | Example: ATGIP_ ATGIP192.168.0.215 OK |
Замечаниоссэ | query command |
OSD Overlay Protocol
Форматэн | ATOSD$(idx), $(дышетскыны), $(y), $(str)_ Example:ATOSD0,40,20,height: 100m_ |
Параметръёсты | 1. IDX index: 0~7 (supports OSD overlay for 8 areas) 2. X-coordinate: 0~1919 3. Y coordinate: 0~1079 4. str: the string to be displayed at the corresponding coordinates (the space symbol is used to clear the display) |
Уже кутыны | on the video screen.OSD information |
Return value | Ӧвӧл |
Remarks | 1. The user specifies the x and y coordinates of the OSD display according to the maximum 1920×1080 пиксел, and the system will correct the coordinates according to the actual display situation. 2. The ‘_’ character cannot be contained in the str parameter |
Set Gain To Adjust
Форматэн | ATSAD$(freq),$(adjust) _ Example:ATSAD700000,2.5_ |
Параметръёсты | wireless central working frequency: Freq(KHz) 200000~2700000(200MHz~2.7GHz, step: 1KHz) Adjust the value(дБ): ATSD cmd will subtract this value to set the wireless gain |
Anda | Specify and adjust the value for the wireless gain setting using by ATSD cmd |
Feedback | Example: ATSAD700000,2.5_ freq:700000,adjust:2.50 ӜОГЕН |
Comments | Setting command is still valid when stopping power or resetting. |
Get Gain To Adjust
Форматэн | ATGAD[$(freq)]_ Example:ATGAD700000_ |
Параметръёсты | wireless central working frequency: Freq(KHz) 200000~2700000(200MHz~2.7GHz, step: 1KHz) When no parameter provides, it will list all the freq that have adjusted value. |
Anda | Inquiry adjust the value for wireless gain setting using ATSD cmd |
Feedback | Example: ATGAD700000_ freq:700000,adjust:2.50 OK ATGAD_ freq:700000 750000 ӜОГЕН |
Comments | Inquiry command. |
Serial Port Utility software download
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ЧАВО
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 the 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 (Басьты) 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 (kHz) and E bit rate (Мбит / - ысь). When I set E, the new value does not apply. So. the E setting is only for monitoring of available bitrate? if I wish to change the E (Bitrate) I have to change only B (bandwidth)? 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.
By default, 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 Modulator Demodulator Module Encoder Decoder HDMI CVBS AV Input AES 256 FHD RF streaming
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