Encoder Modulator Decoder Demodulator Module Parameter Configuration Faatonuga COFDM AT Poloaiga

Encoder Modulator Decoder Demodulator Module Parameter Configuration Faatonuga COFDM AT Poloaiga

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.

Update Record:

faʻamatalagaasofaʻamatalaga
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 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 (TTL tulaga, 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 tusitusiga, faataitaiga:

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

lāpoʻaATDR_
Parameterleai
faʻaaogāfor the integrated system to check whether the serial port is connected and identify the connected modules.
Fa'afo'i tauRCB returns thedevice profilestring
SUE1 returnsATDRSUE1 OKstring
SHD1 returnsATDRSHD1 OKstring
mataʻifa'atonuga fesili

Set Device Command

lāpoʻaATSD $(mimo), $(gi), $(COFDM fa'asologa o feso'otaiga vavave fa'atusatusa fua faatatau), $ (constellation), $(freq(KHz)), $(bw(KHz)), $(tx1_gain), $(tx2_gain)_
Faataitaiga: ATSD0,1,0,0,800000,8000,86.0,86.0_
ParameterOne Antenna/Dual antenna mimo: 0 mimo disable; 1 mimo enable
Guard Interval GI: 0 1/32; 1 1/16; 2 1/8; 3 1/4
Convolution Code Rate: 0 1/2; 1 2 /3; 2 3/4; 3 5/6; 4 7/8;
faaputuga o fetu: 0 QPSK; 1 QAM16; 2 QAM64;
RCB Carrier Center Frequency(kHz) 200000~2700000(200MHz~2.7GHz, 1Laasaga KHz)
RC900 Carrier center Frequency(kHz) 750000~930000(750MHz ~ 930MHz, 1Laasaga KHz)
RCB Channel bandwidth bw(KHz) 2000~8000(2MHz~8MHz, 1Laasaga KHz)
RCB Channel bandwidth bw(KHz) 2000~8000 (2MHz~8MHz, 1Laasaga KHz)
Transmitting antenna 1 gain tx1_gain 0.0~89.75dB, 0.25laa dB
Transmitting antenna 2 gain tx2_gain 0.0~89.75dB, 0.25laa dB
Return Valuepei o le:ATSD0,1,0,0,800000,8000,86.0,86.0_
SISO,GI: 1/16, CR:1/2, MOD: QPSK, freq:800000KHz,bw:8000KHz,tx1_gain:86.000000 tx2_gain:86.000000 afaina
tusiSet command, save when power off.
Different Bandwidths, vaitaimi leoleo, Convolution code rates, Data rate calculation formulas corresponding to constellations
Air interface rate Rate(COFDM fa'asologa o feso'otaiga vavave fa'atusatusa fua faatatau) COFDM fa'asologa o feso'otaiga vavave fa'atusatusa fua faatatau (BandWidth(MHz) * 8.0/7.0) / (1+GI) * 1512/2048*COFDM fa'asologa o feso'otaiga vavave fa'atusatusa fua faatatau(COFDM fa'asologa o feso'otaiga vavave fa'atusatusa fua faatatau) * COFDM fa'asologa o feso'otaiga vavave fa'atusatusa fua faatatau * 188/204.
Taking 8MHz bandwidth as an example, different guard intervals, convolution code rates, data rates corresponding to constellations and required receiving signal-to-noise ratiosC:\Users\timyep\AppData\Roaming\Tencent\Users\157871537\QQ\WinTemp\RichOle\E0XEBCD_M4WD[M1BWR$}TK4.png

Set Gain Command

lāpoʻaATSG$( tx1_gain),$( tx1_gain)_
Faataitaiga: ATSG85.0,85.0_
Parametertx1_gain: Transmitter 1 maua
tx2_gain: Transmitter 2 maua
faʻaaogāTo 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 (transmitter)
Return Value,Faataitaiga: ATSG85.0,85.0_set gain 85.000000 85.000000 afaina
mataʻisetting command, power off will not save.

Set Modulation Mode commano

lāpoʻaATSM$(gi), $(COFDM fa'asologa o feso'otaiga vavave fa'atusatusa fua faatatau), $(constellation)_
Faataitaiga: ATSM1,1,2_
ParameterGard 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;
faaputuga o fetu: 0 QPSK; 1 QAM16; 2 QAM64
faʻaaogāDynamically 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 (transmitter)
Return ValueFaataitaiga:ATSM1,1,2_GI:1/16, CR:2/3, MOD: QAM64, afaina
mataʻisetting command, power off will not save.

Get Device Status Command

lāpoʻaATGD_
Parameterleai
faʻaaogāquery the current number of transmit antennas, vaitaimi leoleo, convolution code rate, number of constellations, transmit frequency, bandwidth, gain parameters (transmitter)
Return ValueFaataitaiga: ATGD_
SISO, GI:1 /16, CR: 1/2, MOD: QPSK, freq: 800000KHz, bw: 8000KHz, tx1_gain: 86.000000 tx2_gain: 86.000000 afaina
mataʻifa'atonuga fesili

Set Encoder Command

lāpoʻaATSE$(llc),$(rt),$(bitrate) ,$(gop),$(otio)_
Faataitaiga: ATSE0,0,0.0,0,0_
Parameter1. Enhanced data reliability option llc: 0 disable; 1 mafai (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 mafai
faʻaaogāUsed to set encoding parameters (Transmitter)
Return ValueFaataitaiga:ATSE0, 0,0.0,0,0_
faiga:0,RT:0,bitrate: 0.0Mbps,gop:0,otio:0,afaina
mataʻisetting command, save when power is off.

Get Encoder Command

lāpoʻaATGE_
Parameterleai
faʻaaogāquerying encoding parameters (sending end)
Return ValueFaataitaiga:ATGE_MODE:0, RT:0,bitrate:4.0Mbps,gop:10,otio:0,aes:0, afaina
mataʻiQuery command AES means the current encryption status: 0 disable; 1 mafai

Get Input Command

lāpoʻaATGI_
Parameterleai
faʻaaogāquery the current camera input parameters (transmitter)
Return ValueFaataitaiga:ATGI_input_size: 1080p, input_rate: 60fps, sensor_type: hdmi,afaina
mataʻifa'atonuga fesili

Set Input Command

lāpoʻaATSI$(input_size),$(input_rate)_
Faataitaiga: ATSI1080,25_
Parameter1. 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
faʻaaogāTo specify the input resolution and frame rate to meet some special signal sources, or some special application needs (transmitter)
Return ValueFaataitaiga: ATSI1080,25_
Input_size:1080p,input_rate: 25fps, afaina
saunoagaAfter 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

lāpoʻaATSO$(output_size),$(output_rate)_
Faataitaiga: ATSO720,30_
Parameter1. Transmitter: encoding output resolution output_size: 0 equal to input_size; >0 specify output size
2. faataapeina meatotino: HDMI output resolution (720, 1080)
3. Transmitter: encoding output frame rate output_rate: 0 equal to input_rate; >0 specify output_rate (fps)
4. faataapeina meatotino: HDMI output frame rate 720p supports frame rate (50, 60); 1080p supports frame rate (24, 25, 30, 50, 60)
faʻaaogā1. Transmitter: Used to specify the encoding output resolution and frame rate to meet the requirements of certain applications for zooming and frame reduction
2. faataapeina meatotino: used to configure the resolution and frame rate of HDMI output
Return ValueFaataitaiga: ATSO720,30_
output_size: 720p, output_rate: 30fps, afaina
saunoaga1. 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 sao)

lāpoʻaATSU$(vin),$(ain)_
Faataitaiga: ATSU0,1 _
Parameter1. 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
faʻaaogāUsed to meet specific application requirements (Faataitaiga: HDMI/SDI input video, MIC input audio)
Return ValueFaataitaiga: ATSU0,1_
ATSU0,1 OK
mataʻisetting command, power-off save.

Get User Command

lāpoʻaATGU _
Faataitaiga: ATGU_
Parameterleai
faʻaaogāTo query user-specific configuration
Return ValueFaataitaiga: ATGU_
ATGU0,1 OK
mataʻifa'atonuga fesili
return parameter description please refer to the ATSU command

Set Receiver Command

lāpoʻaATSR $(freq), $(bw ), $(llc), $(cvbs)_
Faataitaiga: ATSR320000,6000,0,0_
Parameter1. DR2C carrier frequency freq(KHz) 200000~860000(200MHz ~ 860MHz, 1Laasaga KHz)
2. DR900 carrier center frequency freq(KHz) 200000~1600000(200MHz~1.6GHz, 1Laasaga KHz)
3. DR2C channel bandwidth bw(KHz) 2000~8000(2MHz~8MHz, 1Laasaga KHz)
4. DR900 channel bandwidth bw(KHz) 3200~8000(3.2MHz~8MHz, 1Laasaga KHz)
5. Enhanced data reliability option llc: 0 disable; 1 mafai (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
faʻaaogāTo set the receiver parameter
Return Valueexample: ATSR320000,6000,0,0_
ATSR320000,6000,0,0 OK
mataʻisetting command, save when power is off.

Get Receiver Command

lāpoʻaATGR_
Parameterleai
ATGR_the receiving end parameter
Return ValueFaataitaiga: ATGR_
ATGR320000,6000,0,aes:0,cvbs:0 afaina
mataʻi1. Query command
2. Aes parameter indicates the current encryption status: 0 disable;1 mafai
3. CVBS parameter Indicates the current AV output standard: 0 pal;1 ntsc

Get Bit Error Rate Command

lāpoʻaATGB_
Parameterleai
faʻaaogāquerying the bit error rate and signal strength of the dual antennas at the receiving end
Return ValueFaataitaiga: ATGB_
ATGB ber1:0.00% ber2:0.00% RSSI1 :54 RSSI2:53 Lock1:1 Lock2:1 afaina
saunoaga1. Query commands
2. Ber1 and ber2 respectively indicate the bit error rate of each antenna, ranging from 0.0% i 100.0%
3. RSSI1 and RSSI2 respectively indicate the signal strength of each antenna, ranging from 0 i 100
4. Lock1 and Lock2 respectively indicate the signal locking status of each antenna (1 Represents signal lock)

Set Password Command

lāpoʻaATSP$(numera e le iloa e sesi), $(numera e le iloa e sesi)_
Faataitaiga: ATSP123456, 123456_
ParameterAES key password: 6-digit password (ASCII)
AES key password: 6-digit password (ASCII) (repeat it for confirmation)
faʻaaogāUsed to set the AES key of the transceiver (transmitter ma e faataapeina)
Return ValueFaataitaiga: ATSP123456_
ATSP123456 OK
mataʻi1. 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

lāpoʻaATST$(fua faatatau baud), $( parity)_
Faataitaiga: ATST115200,0_
Parameter1. Baud rate baud rate: 1200、2400、4800、9600、19200、38400、57600、115200
2. Check Code: 0: Leai; 1: Odd; 2: Even
faʻaaogāUsed to set the baud rate and parity bit of the serial port for data transparent transmission
Return ValueFaataitaiga: ATST115200,0_
ATST115200,0 OK
saunoagaSet command

Get Data Transfer Command

lāpoʻaATGT_
Parameterleai
faʻaaogāUsed to query the baud rate and check code
Return ValueFaataitaiga: ATGT_
ATGT115200,0 OK
saunoagaQuery command

Set IP Address Command

lāpoʻaATSIP$(ip), $(ip)_
Faataitaiga: ATSIP192.168.1.215,192.168.1.215_
ParameterLocal IP address
Local IP address (repeat to confirm)
faʻaaogāUsed to set the receiver IP address
Return ValueFaataitaiga: ATSIP_192.168.1 .215,192.168.1.215_
ATSIP192.168.1.215 OK
saunoaga1. 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

lāpoʻaATGIP_
Faataitaiga: ATGIP_
Parameterleai
faʻaaogāe fesiligia le tuatusi IP o loʻo i ai nei o le pito e mauaina
Fa'afo'i tauFaataitaiga: ATGIP_
ATGIP192.168.0.215 OK
mataʻifa'atonuga fesili

OSD Overlay Protocol

lāpoʻaATOSD$(idx), $(x), $(y), $(str)_
Faataitaiga:ATOSD0,40,20,height: 100m_
Parameter1. 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)
faʻaaogāon the video screen.OSD information
Fa'afo'i tauleai
saunoaga1. The user specifies the x and y coordinates of the OSD display according to the maximum 1920×1080 pixels, 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

lāpoʻaATSAD$(freq),$(adjust) _ Faataitaiga:ATSAD700000,2.5_
Parameterwireless 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
galuega tauaveSpecify and adjust the value for the wireless gain setting using by ATSD cmd
Manatu faaaliaFaataitaiga: ATSAD700000,2.5_ freq:700000,adjust:2.50 afaina
Fa'amatalagaSetting command is still valid when stopping power or resetting.

Get Gain To Adjust

lāpoʻaATGAD[$(freq)]_ Faataitaiga:ATGAD700000_
Parameterwireless 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.
galuega tauaveInquiry adjust the value for wireless gain setting using ATSD cmd
Manatu faaaliaFaataitaiga: ATGAD700000_ freq:700000,adjust:2.50 OK ATGAD_ freq:700000 750000 afaina
Fa'amatalagaInquiry command.

Serial Port Utility software download

https://www.alithon.com/downloads

FAQ

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 le 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 (maua) 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. O lea. 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 ‘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 Module Encoder Decoder HDMI CVBS AV Input AES 256 FHD RF faʻafefe

$0.00

107625

Tuu se Tali

E le fa'asalalauina lau tuatusi imeli. Fa'ailogaina fanua mana'omia *

Saili atili mai iVcan.com

Fa'asoa nei e fa'aauau le faitau ma maua le avanoa i le fa'amaumauga atoa.

Faʻaauau faitau

Manaomia Fesoasoani ile WhatsApp?