Encoder Modulator Decoder Demodulator Module Parameter Configuration Instructions COFDM AT Command

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Update Record:

putanga	rā	Whakaahuatanga
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 (taumata TTL, 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 kuputuhi, hei tauira:

Command 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

hōputu	ATDR_
tawhā	No
Whakamahi	for the integrated system to check whether the serial port is connected and identify the connected modules.
Whakahoki uara	RCB returns the “device profile” string SUE1 returns “ATDRSUE1 OK” string SHD1 returns “ATDRSHD1 OK” string
parau	tono patai

Set Device Command

hōputu	ATSD $(mimo), $(gi), $(COFDM pūnaha tuku ahokore tātai auau tuku), $ (constellation), $(auau(kHz)), $(bw(kHz)), $(tx1_gain), $(tx2_gain)_ Tauira: ATSD0,1,0,0,800000,8000,86.0,86.0_
tawhā	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; kāhui whetū: 0 QPSK; 1 QAM16; 2 QAM64; RCB Carrier Center Frequency(kHz) 200000~2700000(200MHz~2.7GHz, 1KHz taahiraa) RC900 Carrier center Frequency(kHz) 750000~930000(750MHz ~ 930MHz, 1KHz taahiraa) RCB Channel bandwidth bw(kHz) 2000~8000(2MHz~8MHz, 1KHz taahiraa) RCB Channel bandwidth bw(kHz) 2000~8000 (2MHz~8MHz, 1KHz taahiraa) 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	pērā i:ATSD0,1,0,0,800000,8000,86.0,86.0_ SISO,GI: 1/16, CR:1/2, MOD: QPSK, auau:800000kHz,bw:8000kHz,tx1_gain:86.000000 tx2_gain:86.000000 OK
tuhipoka	Set command, save when power off. Different Bandwidths, wā Guard, Convolution code rates, Data rate calculation formulas corresponding to constellations Air interface rate Rate(COFDM pūnaha tuku ahokore tātai auau tuku) COFDM pūnaha tuku ahokore tātai auau tuku (Aratuku(MHz) * 8.0/7.0) / (1+GI) * 1512/2048*COFDM pūnaha tuku ahokore tātai auau tuku(COFDM pūnaha tuku ahokore tātai auau tuku) * COFDM pūnaha tuku ahokore tātai auau tuku * 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

hōputu	ATSG$( tx1_gain),$( tx1_gain)_ Tauira: ATSG85.0,85.0_
tawhā	tx1_gain: tuku 1 taonga tx2_gain: tuku 2 taonga
Whakamahi	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 (tuku)
Return Value,	Tauira: ATSG85.0,85.0_set gain 85.000000 85.000000 OK
parau	setting command, power off will not save.

Set Modulation Mode command

hōputu	ATSM$(gi), $(COFDM pūnaha tuku ahokore tātai auau tuku), $(constellation)_ Tauira: ATSM1,1,2_
tawhā	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; kāhui whetū: 0 QPSK; 1 QAM16; 2 QAM64
Whakamahi	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 (tuku)
Return Value	Tauira:ATSM1,1,2_GI:1/16, CR:2/3, MOD: QAM64, OK
parau	setting command, power off will not save.

Get Device Status Command

hōputu	ATGD_
tawhā	No
Whakamahi	query the current number of transmit antennas, wā kaitiaki, convolution code rate, number of constellations, transmit frequency, hōkaiipurangi, gain parameters (tuku)
Return Value	Tauira: ATGD_ SISO, GI:1 /16, CR: 1/2, MOD: QPSK, auau: 800000kHz, bw: 8000kHz, tx1_gain: 86.000000 tx2_gain: 86.000000 OK
parau	tono patai

Set Encoder Command

hōputu	ATSE$(llc),$(rt),$(bitrate) ,$(gop),$(ororongo)_ Tauira: ATSE0,0,0.0,0,0_
tawhā	1. Enhanced data reliability option llc: 0 disable; 1 taea (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. Paarua: 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 taea
Whakamahi	Used to set encoding parameters (tuku)
Return Value	Tauira:ATSE0, 0,0.0,0,0_ ARATUKA:0,RT:0,bitrate: 0.0Mpiah,gop:0,ororongo:0,OK
parau	setting command, save when power is off.

Get Encoder Command

hōputu	ATGE_
tawhā	No
Whakamahi	querying encoding parameters (sending end)
Return Value	Tauira:ATGE_MODE:0, RT:0,bitrate:4.0Mpiah,gop:10,ororongo:0,aes:0, OK
parau	Query command AES means the current encryption status: 0 disable; 1 taea

Get Input Command

hōputu	ATGI_
tawhā	No
Whakamahi	query the current camera input parameters (tuku)
Return Value	Tauira:ATGI_input_size: 1080p, input_rate: 60fps, sensor_type: hdmi,OK
parau	tono patai

Set Input Command

hōputu	ATSI$(input_size),$(input_rate)_ Tauira: ATSI1080,25_
tawhā	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
Whakamahi	To specify the input resolution and frame rate to meet some special signal sources, or some special application needs (tuku)
Return Value	Tauira: ATSI1080,25_ Input_size:1080p,input_rate: 25fps, OK
mau parau	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

hōputu	ATSO$(output_size),$(output_rate)_ Tauira: ATSO720,30_
tawhā	1. tuku: encoding output resolution output_size: 0 equal to input_size; >0 specify output size 2. kaiwhiwhi: HDMI output resolution (720, 1080) 3. tuku: encoding output frame rate output_rate: 0 equal to input_rate; >0 specify output_rate (fps) 4. kaiwhiwhi: HDMI output frame rate 720p supports frame rate (50, 60); 1080p supports frame rate (24, 25, 30, 50, 60)
Whakamahi	1. tuku: Used to specify the encoding output resolution and frame rate to meet the requirements of certain applications for zooming and frame reduction 2. kaiwhiwhi: used to configure the resolution and frame rate of HDMI output
Return Value	Tauira: ATSO720,30_ output_size: 720p, output_rate: 30fps, OK
mau parau	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 / tāuru CVBS)

hōputu	ATSU$(vin),$(ain)_ Tauira: ATSU0,1 _
tawhā	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
Whakamahi	Used to meet specific application requirements (Tauira: HDMI/SDI input video, MIC input audio)
Return Value	Tauira: ATSU0,1_ ATSU0,1 OK
parau	setting command, power-off save.

Get User Command

hōputu	ATGU _ Tauira: ATGU_
tawhā	No
Whakamahi	To query user-specific configuration
Return Value	Tauira: ATGU_ ATGU0,1 OK
parau	tono patai return parameter description please refer to the ATSU command

Set Receiver Command

hōputu	ATSR $(auau), $(bw ), $(llc), $(cvbs)_ Tauira: ATSR320000,6000,0,0_
tawhā	1. DR2C carrier frequency freq(kHz) 200000~860000(200MHz ~ 860MHz, 1KHz taahiraa) 2. DR900 carrier center frequency freq(kHz) 200000~1600000(200MHz~1.6GHz, 1KHz taahiraa) 3. DR2C channel bandwidth bw(kHz) 2000~8000(2MHz~8MHz, 1KHz taahiraa) 4. DR900 channel bandwidth bw(kHz) 3200~8000(3.2MHz~8MHz, 1KHz taahiraa) 5. Enhanced data reliability option llc: 0 disable; 1 taea (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
Whakamahi	To set the receiver parameter
Return Value	example: ATSR320000,6000,0,0_ ATSR320000,6000,0,0 OK
parau	setting command, save when power is off.

Get Receiver Command

hōputu	ATGR_
tawhā	No
ATGR_	the receiving end parameter
Return Value	Tauira: ATGR_ ATGR320000,6000,0,aes:0,cvbs:0 OK
parau	1. Query command 2. Aes parameter indicates the current encryption status: 0 disable;1 taea 3. CVBS parameter Indicates the current AV output standard: 0 pal;1 ntsc

Get Bit Error Rate Command

hōputu	ATGB_
tawhā	No
Whakamahi	querying the bit error rate and signal strength of the dual antennas at the receiving end
Return Value	Tauira: ATGB_ ATGB ber1:0.00% ber2:0.00% RSSI1 :54 RSSI2:53 Lock1:1 Lock2:1 OK
mau parau	1. Query commands 2. Ber1 and ber2 respectively indicate the bit error rate of each antenna, mai i 0.0% ki 100.0% 3. RSSI1 and RSSI2 respectively indicate the signal strength of each antenna, mai i 0 ki 100 4. Lock1 and Lock2 respectively indicate the signal locking status of each antenna (1 Represents signal lock)

Set Password Command

hōputu	ATSP$(kupuhipa), $(kupuhipa)_ Tauira: ATSP123456, 123456_
tawhā	AES key password: 6-kupuhipa mati (ASCII) AES key password: 6-kupuhipa mati (ASCII) (repeat it for confirmation)
Whakamahi	Used to set the AES key of the transceiver (tuku me te kaiwhiwhi)
Return Value	Tauira: ATSP123456_ ATSP123456 OK
parau	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

hōputu	ATST$(auau mokotare), $( parity)_ Tauira: ATST115200,0_
tawhā	1. Baud rate baud rate: 1200、2400、4800、9600、19200、38400、57600、115200 2. Check Code: 0: Karekau; 1: He rerekee; 2: Ahakoa
Whakamahi	Used to set the baud rate and parity bit of the serial port for data transparent transmission
Return Value	Tauira: ATST115200,0_ ATST115200,0 OK
mau parau	Set command

Get Data Transfer Command

hōputu	ATGT_
tawhā	No
Whakamahi	Used to query the baud rate and check code
Return Value	Tauira: ATGT_ ATGT115200,0 OK
mau parau	Query command

Set IP Address Command

hōputu	ATSIP$(ip), $(ip)_ Tauira: ATSIP192.168.1.215,192.168.1.215_
Tawhā	Local IP address Local IP address (repeat to confirm)
Whakamahi	Used to set the receiver IP address
Return Value	Tauira: ATSIP_192.168.1 .215,192.168.1.215_ ATSIP192.168.1.215 OK
mau parau	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

hōputu	ATGIP_ Tauira: ATGIP_
tawhā	No
Whakamahi	ki te uiui i te wahitau IP o naianei o te mutunga whiwhi
Whakahoki uara	Tauira: ATGIP_ ATGIP192.168.0.215 OK
parau	tono patai

OSD Overlay Protocol

hōputu	ATOSD$(idx), $(x), $(y), $(str)_ Tauira:ATOSD0,40,20,height: 100m_
tawhā	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)
Whakamahi	on the video screen.OSD information
Whakahoki uara	No
mau parau	1. 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

hōputu	ATSAD$(auau),$(adjust) _ Tauira:ATSAD700000,2.5_
tawhā	wireless 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
taumahi	Specify and adjust the value for the wireless gain setting using by ATSD cmd
Urupare	Tauira: ATSAD700000,2.5_ freq:700000,adjust:2.50 OK
Nga korero	Setting command is still valid when stopping power or resetting.

Get Gain To Adjust

hōputu	ATGAD[$(auau)]_ Tauira:ATGAD700000_
tawhā	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.
taumahi	Inquiry adjust the value for wireless gain setting using ATSD cmd
Urupare	Tauira: ATGAD700000_ freq:700000,adjust:2.50 OK ATGAD_ freq:700000 750000 OK
Nga korero	Inquiry command.

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