Encoder Modulator Decoder Demodulator Module Parameter Configuration Instructions COFDM AT Command

Encoder Modulator Decoder Demodulator Module Parameter Configuration Instructions COFDM AT Command

Encoder Modulator Decoder Demodulator Module
COFDM-RF-demodulator-decoder-receiver-H264-Vcan1776RX-H264

Download the Encoder Modulator Decoder Demodulator Module Parameter Configuration Instructions below if you need a PDF file.

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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 withATand 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 (leibhéal TTL, 3.3V) of the COFDM module. For detailed serial port configuration, refer to the figure below. Please use tools such asSerial Port Debugging Assistantto send AT commands to the COFDM module, pay attention to the use of téacs, mar shampla:

Encoder Modulator Decoder Demodulator Module Parameter Configuration Instructions COFDM AT Command 1
Encoder Modulator Decoder Demodulator Module

Command Classification

The AT commands for configuring COFDM module parameters are mainly divided into the following two categories:

Query CommandsATDR, ATGD, ATGE, ATGI , ATGR, ATGT, ATGB, ATGU, ATGIP
Setting CommandsATSD, 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 CommandsATSD, ATSE, ATSI, ATSO, ATSR, ATSP, ATST, ATSU, ATSIP
Power-off Not Saving CommandsATSG, ATSM, ATOSD

According to the configuration transmitter or receiver, the classification is as follows:

Sender Configuration CommandsATDR, ATSD, ATGD, ATSG, ATSM, ATSE, ATGE, ATSI, ATGI, ATSO, ATSP, ATST, ATGT, ATSU, ATGU, ATOSD
Receiver Configuration CommandsATDR, ATSR, ATGR, ATSP, ATST, ATGT, ATGB, ATSIP, ATGIP

Command Details

Ping Command

formáidATDR_
paraiméadarNíl
Úsáidfor the integrated system to check whether the serial port is connected and identify the connected modules.
Return valueRCB returns thedevice profilestring
SUE1 returnsATDRSUE1 OKstring
SHD1 returnsATDRSHD1 OKstring
ráiteasquery command

Set Device Command

formáidATSD $(mimo), $(gi), $(Ríomh ráta tarchurtha córas tarchurtha gan sreang COFDM), $ (constellation), $(freq(KHz)), $(bw(KHz)), $(tx1_gain), $(tx2_gain)_
Example: ATSD0,1,0,0,800000,8000,86.0,86.0_
paraiméadarOne Antenna/Dual antenna mimo: 0 mimo disable; 1 mimo enable
Guard Interval GI: 0 1/32; 1 1/16; 2 1/8; 3 1/4
Convolution Code Rate: 0 1/2; 1 2 /3; 2 3/4; 3 5/6; 4 7/8;
réaltbhuíon: 0 QPSK; 1 QAM16; 2 QAM64;
RCB Carrier Center Frequency(kHz) 200000~2700000(200MHz~2.7GHz, 1Céim KHz)
RC900 Carrier center Frequency(kHz) 750000~930000(750MHz ~ 930MHz, 1Céim KHz)
RCB Channel bandwidth bw(KHz) 2000~8000(2MHz~8MHz, 1Céim KHz)
RCB Channel bandwidth bw(KHz) 2000~8000 (2MHz~8MHz, 1Céim KHz)
Transmitting antenna 1 gain tx1_gain 0.0~89.75dB, 0.25dB stepping
Transmitting antenna 2 gain tx2_gain 0.0~89.75dB, 0.25dB stepping
Return Valuemar:ATSD0,1,0,0,800000,8000,86.0,86.0_
SISO,GI: 1/16, CR:1/2, MOD: QPSK, freq:800000KHz,bw:8000KHz,tx1_gain:86.000000 tx2_gain:86.000000 OK
NótaSet command, save when power off.
Different Bandwidths, eatraimh Garda, Convolution code rates, Data rate calculation formulas corresponding to constellations
Air interface rate Rate(Ríomh ráta tarchurtha córas tarchurtha gan sreang COFDM) Ríomh ráta tarchurtha córas tarchurtha gan sreang COFDM (Bandwidth(MHz) * 8.0/7.0) / (1+GI) * 1512/2048*Ríomh ráta tarchurtha córas tarchurtha gan sreang COFDM(Ríomh ráta tarchurtha córas tarchurtha gan sreang COFDM) * Ríomh ráta tarchurtha córas tarchurtha gan sreang COFDM * 188/204.
Taking 8MHz bandwidth as an example, different guard intervals, convolution code rates, data rates corresponding to constellations and required receiving signal-to-noise ratiosC:\Users\timyep\AppData\Roaming\Tencent\Users\157871537\QQ\WinTemp\RichOle\E0XEBCD_M4WD[M1BWR$}TK4.png

Set Gain Command

formáidATSG$( tx1_gain),$( tx1_gain)_
Example: ATSG85.0,85.0_
paraiméadartx1_gain: Tarchuradóir 1 gnóthachan
tx2_gain: Tarchuradóir 2 gnóthachan
ÚsáidTo 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 (tarchuradóra)
Return Value,Example: ATSG85.0,85.0_set gain 85.000000 85.000000 OK
ráiteassetting command, power off will not save.

Set Modulation Mode command

formáidATSM$(gi), $(Ríomh ráta tarchurtha córas tarchurtha gan sreang COFDM), $(constellation)_
Example: ATSM1,1,2_
paraiméadarGard 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;
réaltbhuíon: 0 QPSK; 1 QAM16; 2 QAM64
ÚsáidDynamically 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 (tarchuradóra)
Return ValueExample:ATSM1,1,2_GI:1/16, CR:2/3, MOD: QAM64, OK
ráiteassetting command, power off will not save.

Get Device Status Command

formáidATGD_
paraiméadarNíl
Úsáidquery the current number of transmit antennas, eatramh garda, convolution code rate, number of constellations, transmit frequency, bandaleithead, gain parameters (tarchuradóra)
Return ValueExample: ATGD_
SISO, GI:1 /16, CR: 1/2, MOD: QPSK, freq: 800000KHz, bw: 8000KHz, tx1_gain: 86.000000 tx2_gain: 86.000000 OK
ráiteasquery command

Set Encoder Command

formáidATSE$(llc),$(rt),$(bitrate) ,$(gop),$(fuaime)_
Example: ATSE0,0,0.0,0,0_
paraiméadar1. Enhanced data reliability option llc: 0 disable; 1 chumasú (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. Giotán: 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 chumasú
ÚsáidUsed to set encoding parameters (Tarchuradóir)
Return ValueExample:ATSE0, 0,0.0,0,0_
MODE:0,RT:0,bitrate: 0.0Mbps,gop:0,fuaime:0,OK
ráiteassetting command, save when power is off.

Get Encoder Command

formáidATGE_
paraiméadarNíl
Úsáidquerying encoding parameters (sending end)
Return ValueExample:ATGE_MODE:0, RT:0,bitrate:4.0Mbps,gop:10,fuaime:0,aes:0, OK
ráiteasQuery command AES means the current encryption status: 0 disable; 1 chumasú

Get Input Command

formáidATGI_
paraiméadarNíl
Úsáidquery the current camera input parameters (tarchuradóra)
Return ValueExample:ATGI_input_size: 1080p, input_rate: 60fss, sensor_type: hdmi,OK
ráiteasquery command

Set Input Command

formáidATSI$(input_size),$(input_rate)_
Example: ATSI1080,25_
paraiméadar1. 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
ÚsáidTo specify the input resolution and frame rate to meet some special signal sources, or some special application needs (tarchuradóra)
Return ValueExample: ATSI1080,25_
Input_size:1080p,input_rate: 25fss, OK
NótaíAfter 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

formáidATSO$(output_size),$(output_rate)_
Example: ATSO720,30_
paraiméadar1. Tarchuradóir: encoding output resolution output_size: 0 equal to input_size; >0 specify output size
2. glacadóir: HDMI output resolution (720, 1080)
3. Tarchuradóir: encoding output frame rate output_rate: 0 equal to input_rate; >0 specify output_rate (fss)
4. glacadóir: HDMI output frame rate 720p supports frame rate (50, 60); 1080p supports frame rate (24, 25, 30, 50, 60)
Úsáid1. Tarchuradóir: Used to specify the encoding output resolution and frame rate to meet the requirements of certain applications for zooming and frame reduction
2. glacadóir: used to configure the resolution and frame rate of HDMI output
Return ValueExample: ATSO720,30_
output_size: 720p, output_rate: 30fss, OK
Nótaí1. 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 / ionchur CVBS)

formáidATSU$(vin),$(ain)_
Example: ATSU0,1 _
paraiméadar1. 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
ÚsáidUsed to meet specific application requirements (Example: HDMI/SDI input video, MIC input audio)
Return ValueExample: ATSU0,1_
ATSU0,1 OK
ráiteassetting command, power-off save.

Get User Command

formáidATGU _
Example: ATGU_
paraiméadarNíl
ÚsáidTo query user-specific configuration
Return ValueExample: ATGU_
ATGU0,1 OK
ráiteasquery command
return parameter description please refer to the ATSU command

Set Receiver Command

formáidATSR $(freq), $(bw ), $(llc), $(cvbs)_
Example: ATSR320000,6000,0,0_
paraiméadar1. DR2C carrier frequency freq(KHz) 200000~860000(200MHz ~ 860MHz, 1Céim KHz)
2. DR900 carrier center frequency freq(KHz) 200000~1600000(200MHz~1.6GHz, 1Céim KHz)
3. DR2C channel bandwidth bw(KHz) 2000~8000(2MHz~8MHz, 1Céim KHz)
4. DR900 channel bandwidth bw(KHz) 3200~8000(3.2MHz~8MHz, 1Céim KHz)
5. Enhanced data reliability option llc: 0 disable; 1 chumasú (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
ÚsáidTo set the receiver parameter
Return Valueexample: ATSR320000,6000,0,0_
ATSR320000,6000,0,0 OK
ráiteassetting command, save when power is off.

Get Receiver Command

formáidATGR_
paraiméadarNíl
ATGR_the receiving end parameter
Return ValueExample: ATGR_
ATGR320000,6000,0,aes:0,cvbs:0 OK
ráiteas1. Query command
2. Aes parameter indicates the current encryption status: 0 disable;1 chumasú
3. CVBS parameter Indicates the current AV output standard: 0 pal;1 ntsc

Get Bit Error Rate Command

formáidATGB_
paraiméadarNíl
Úsáidquerying the bit error rate and signal strength of the dual antennas at the receiving end
Return ValueExample: ATGB_
ATGB ber1:0.00% ber2:0.00% RSSI1 :54 RSSI2:53 Lock1:1 Lock2:1 OK
Nótaí1. Query commands
2. Ber1 and ber2 respectively indicate the bit error rate of each antenna, ranging from 0.0% chun 100.0%
3. RSSI1 and RSSI2 respectively indicate the signal strength of each antenna, ranging from 0 chun 100
4. Lock1 and Lock2 respectively indicate the signal locking status of each antenna (1 Represents signal lock)

Set Password Command

formáidATSP$(pasfhocal), $(pasfhocal)_
Example: ATSP123456, 123456_
paraiméadarAES key password: 6-digit password (ASCII)
AES key password: 6-digit password (ASCII) (repeat it for confirmation)
ÚsáidUsed to set the AES key of the transceiver (tarchuradóra agus glacadóir)
Return ValueExample: ATSP123456_
ATSP123456 OK
ráiteas1. 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

formáidATST$(ráta baud), $( parity)_
Example: ATST115200,0_
paraiméadar1. Baud rate baud rate: 1200、2400、4800、9600、19200、38400、57600、115200
2. Check Code: 0: Dada; 1: Odd; 2: Even
ÚsáidUsed to set the baud rate and parity bit of the serial port for data transparent transmission
Return ValueExample: ATST115200,0_
ATST115200,0 OK
NótaíSet command

Get Data Transfer Command

formáidATGT_
paraiméadarNíl
ÚsáidUsed to query the baud rate and check code
Return ValueExample: ATGT_
ATGT115200,0 OK
NótaíQuery command

Set IP Address Command

formáidATSIP$(ip), $(ip)_
Example: ATSIP192.168.1.215,192.168.1.215_
ParaiméadairLocal IP address
Local IP address (repeat to confirm)
ÚsáidUsed to set the receiver IP address
Return ValueExample: ATSIP_192.168.1 .215,192.168.1.215_
ATSIP192.168.1.215 OK
Nótaí1. 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

formáidATGIP_
Example: ATGIP_
paraiméadarNíl
Úsáidto query the current IP address of the receiving end
Return valueExample: ATGIP_
ATGIP192.168.0.215 OK
ráiteasquery command

OSD Overlay Protocol

formáidATOSD$(idx), $(x), $(y), $(str)_
Example:ATOSD0,40,20,height: 100m_
paraiméadar1. 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)
Úsáidon the video screen.OSD information
Return valueNíl
Nótaí1. The user specifies the x and y coordinates of the OSD display according to the maximum 1920×1080 pixel, 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

formáidATSAD$(freq),$(adjust) _ Example:ATSAD700000,2.5_
paraiméadarwireless central working frequency:   Freq(KHz) 200000~2700000(200MHz~2.7GHz, step: 1KHz) Adjust the value(dB):       ATSD cmd will subtract this value to set the wireless gain
FeidhmSpecify and adjust the value for the wireless gain setting using by ATSD cmd
AiseolasExample: ATSAD700000,2.5_ freq:700000,adjust:2.50 OK
TuairimíSetting command is still valid when stopping power or resetting.

Get Gain To Adjust

formáidATGAD[$(freq)]_ Example:ATGAD700000_
paraiméadarwireless 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.
FeidhmInquiry adjust the value for wireless gain setting using ATSD cmd
AiseolasExample: ATGAD700000_ freq:700000,adjust:2.50 OK ATGAD_ freq:700000 750000 OK
TuairimíInquiry command.

Serial Port Utility software download

https://www.alithon.com/downloads

CC

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 an 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 (gnóthachan) 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 setB bandwidth (kHz) and E bit rate (Mbps). When I set E, the new value does not apply. Mar sin. the E setting is only for monitoring of available bitrate? if I wish to change the E (Giotán) I have to change only B (bandaleithead)? Am I right?

It is not recommended to modify the video bit rate ‘Edirectly, 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 ‘Ewill be set to 0 for automatic. Customers only need to modify ‘Bto 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 Ionchódóir Modúl Ionchódóir HDMI Ionchur CVBS AV AES 256 Sruthú FHD RF

SKU: Vcan1776 Catagóirí: , , Clibeanna: , ,
107625

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