Encoder Modulator Decoder Demodulator Module Parameter Configuration Instructions COFDM AT Command

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Update Record:

version	Hnub	hauj lwm
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 theem, 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 ntawv nyeem, piv txwv li:

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 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

hom	ATDR_
parameter	tsis
siv	for the integrated system to check whether the serial port is connected and identify the connected modules.
Rov qab tus nqi	RCB returns the “device profile” string SUE1 returns “ATDRSUE1 OK” string SHD1 returns “ATDRSHD1 OK” string
hais	lus txib

Set Device Command

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Set Gain Command

hom	ATSG$( tx1_gain),$( tx1_gain)_ Piv txwv: ATSG85.0,85.0_
parameter	tx1_gain: transmitter 1 nce tx2_gain: transmitter 2 nce
siv	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 (transmitter)
Rov qab tus nqi,	Piv txwv: ATSG85.0,85.0_set gain 85.000000 85.000000 OK
hais	teeb tsa lus txib, power off will not save.

Set Modulation Mode command

hom	ATSM$(gi), $(COFDM wireless kis tau tus mob system kis tus nqi suav), $(hnub qub)_ Piv txwv: ATSM1,1,2_
parameter	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 QAM 16; 2 QAM 64
siv	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 (transmitter)
Rov qab tus nqi	Piv txwv:ATSM1,1,2_GI:1/16, CR:2/3, MOD: QAM 64, OK
hais	teeb tsa lus txib, power off will not save.

Get Device Status Command

hom	ATGD_
parameter	tsis
siv	query the current number of transmit antennas, khwb luv, convolution code rate, number of constellations, transmit frequency, bandwidth, gain parameters (transmitter)
Rov qab tus nqi	Piv txwv: ATGD_ SISO, GI:1 /16, CR: 1/2, MOD: QPSK, zaus: 800000KHz, bw: 8000KHz, tx1_gain: 86.000000 tx2_gain: 86.000000 OK
hais	lus txib

Set Encoder Command

hom	ATSE$(llc),$(rt),$(bitrate) ,$(gop),$(suab)_ Piv txwv: ATSE0,0,0.0,0,0_
parameter	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. Ntsis: 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
siv	Used to set encoding parameters (transmitter)
Rov qab tus nqi	Piv txwv:ATSE0, 0,0.0,0,0_ HOM:0,RT:0,bitrate: 0.0Mbps,gop:0,suab:0,OK
hais	teeb tsa lus txib, save when power is off.

Get Encoder Command

hom	ATGE_
parameter	tsis
siv	querying encoding parameters (sending end)
Rov qab tus nqi	Piv txwv:ATGE_MODE:0, RT:0,bitrate:4.0Mbps,gop:10,suab:0,aes:0, OK
hais	Query command AES means the current encryption status: 0 disable; 1 enable

Get Input Command

hom	ATGI_
parameter	tsis
siv	query the current camera input parameters (transmitter)
Rov qab tus nqi	Piv txwv:ATGI_input_size: 1080p, input_rate: 60fps, sensor_type: hdmi,OK
hais	lus txib

Set Input Command

hom	ATSI$(input_size),$(input_rate)_ Piv txwv: ATSI1080,25_
parameter	1. Input resolution input_size: 0 cia lub kaw lus ntes; >0 specify input size 2. Input frame rate input_rate: 0 cia lub kaw lus ntes; > 0 specify input fps
siv	To specify the input resolution and frame rate to meet some special signal sources, or some special application needs (transmitter)
Rov qab tus nqi	Piv txwv: ATSI1080,25_ Input_size:1080p,input_rate: 25fps, OK
lus hais	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

hom	ATSO$(output_size),$(output_rate)_ Piv txwv: ATSO720,30_
parameter	1. transmitter: encoding output resolution output_size: 0 equal to input_size; >0 specify output size 2. receiver: HDMI output resolution (720, 1080) 3. transmitter: encoding output frame rate output_rate: 0 equal to input_rate; >0 specify output_rate (fps) 4. receiver: HDMI output frame rate 720p supports frame rate (50, 60); 1080p supports frame rate (24, 25, 30, 50, 60)
siv	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. receiver: used to configure the resolution and frame rate of HDMI output
Rov qab tus nqi	Piv txwv: ATSO720,30_ output_size: 720p, output_rate: 30fps, OK
lus hais	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.

Teem Input Sources Command (hloov HDMI / CVBS tswv yim)

hom	TSI $(ua vin),$(ib ain)_ Piv txwv: TSI 0,1_
parameter	1. Video tswv yim xaiv VIN: 0 cia lub kaw lus ntes; 1 quab yuam CVBS input; 2 quab yuam hdmi/SDI input 2. Audio input xaiv AIN: 0 cia lub kaw lus ntes; 1 quab yuam analog input
siv	Siv los ua kom tau raws li kev thov tshwj xeeb (Piv txwv: HDMI/SDI input video, MIC input suab)
Rov qab tus nqi	Piv txwv: TSI 0,1_ UAS 0,1 OK
hais	teeb tsa lus txib, hluav taws xob txuag.

Get User Command

hom	ATGU _ Piv txwv: ATGU_
parameter	tsis
siv	To query user-specific configuration
Rov qab tus nqi	Piv txwv: ATGU_ ATGU0,1 OK
hais	lus txib return parameter description please refer to the ATSU command

Set Receiver Command

hom	ATSR $(zaus), $(bw ), $(llc), $(cvbs)_ Piv txwv: ATSR320000,6000,0,0_
parameter	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 ~ 8 MHz, 1KHz step) 4. DR900 channel bandwidth bw(KHz) 3200~8000(3.2MHz ~ 8 MHz, 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
siv	To set the receiver parameter
Rov qab tus nqi	example: ATSR320000,6000,0,0_ ATSR320000,6000,0,0 OK
hais	teeb tsa lus txib, save when power is off.

Get Receiver Command

hom	ATGR_
parameter	tsis
ATGR_	the receiving end parameter
Rov qab tus nqi	Piv txwv: ATGR_ ATGR320000,6000,0,aes:0,cvbs:0 OK
hais	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

hom	ATGB_
parameter	tsis
siv	querying the bit error rate and signal strength of the dual antennas at the receiving end
Rov qab tus nqi	Piv txwv: ATGB_ ATGB ber1:0.00% ber2:0.00% RSSI1 :54 RSSI2:53 Lock1:1 Lock2:1 OK
lus hais	1. Query commands 2. Ber1 and ber2 respectively indicate the bit error rate of each antenna, ranging from 0.0% rau 100.0% 3. RSSI1 and RSSI2 respectively indicate the signal strength of each antenna, ranging from 0 rau 100 4. Lock1 and Lock2 respectively indicate the signal locking status of each antenna (1 Represents signal lock)

Set Password Command

hom	TSI $(tus password), $(tus password)_ Piv txwv: ATSP123456, 123456_
parameter	AES tus password: 6-tus lej password (ASCII) AES tus password: 6-tus lej password (ASCII) (repeat it for confirmation)
siv	Siv los teeb tsa tus yuam sij AES ntawm lub transceiver (transmitter thiab receiver)
Rov qab tus nqi	Piv txwv: ATSP123456_ ATSP123456 OK
hais	1. Thaum tus password yog tag nrho 0, AES encryption is turned off. 2. Set the command and save it after powering it off.

Set Data Transfer Command

hom	ATST$(baud tus nqi), $( parity)_ Piv txwv: ATST115200,0_
parameter	1. Baud rate baud rate: 1200、2400、4800、9600、19200、38400、57600、115200 2. Check Code: 0: Tsis muaj; 1: khib; 2: Txawm
siv	Used to set the baud rate and parity bit of the serial port for data transparent transmission
Rov qab tus nqi	Piv txwv: ATST115200,0_ ATST115200,0 OK
lus hais	Teeb cov lus txib

Get Data Transfer Command

hom	ATGT_
parameter	tsis
siv	Used to query the baud rate and check code
Rov qab tus nqi	Piv txwv: ATGT_ ATGT115200,0 OK
lus hais	Query command

Set IP Address Command

hom	ATSIP$(ip), $(ip)_ Piv txwv: ATSIP192.168.1.215,192.168.1.215_
Tsis muaj	Local IP address Local IP address (rov hais dua kom paub meej)
siv	Used to set the receiver IP address
Rov qab tus nqi	Piv txwv: ATSIP_192.168.1 .215,192.168.1.215_ ATSIP192.168.1.215 OK
lus hais	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

hom	ATGIP_ Piv txwv: ATGIP_
parameter	tsis
siv	mus nug tus IP chaw nyob tam sim no ntawm qhov kawg tau txais
Rov qab tus nqi	Piv txwv: ATGIP_ ATGIP192.168.0.215 OK
hais	lus txib

OSD Overlay Protocol

hom	ATOSD$(idx), $(x), $(y), $(str)_ Piv txwv:ATOSD0,40,20,height: 100m_
parameter	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)
siv	on the video screen.OSD information
Rov qab tus nqi	tsis
lus hais	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

hom	ATSAD$(zaus),$(adjust) _ Piv txwv:ATSAD700000,2.5_
parameter	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
muaj nuj nqi	Specify and adjust the value for the wireless gain setting using by ATSD cmd
Tawm tswv yim	Piv txwv: ATSAD700000,2.5_ freq:700000,adjust:2.50 OK
Cov lus pom	Setting command is still valid when stopping power or resetting.

Get Gain To Adjust

hom	ATGAD[$(zaus)]_ Piv txwv:ATGAD700000_
parameter	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.
muaj nuj nqi	Inquiry adjust the value for wireless gain setting using ATSD cmd
Tawm tswv yim	Piv txwv: ATGAD700000_ freq:700000,adjust:2.50 OK ATGAD_ freq:700000 750000 OK
Cov lus pom	Inquiry 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 lub 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 (nce) 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 (Mbps). When I set E, the new value does not apply. Yog li. the E setting is only for monitoring of available bitrate? if I wish to change the E (Ntsis) 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.
Raws li lub neej ntawd, 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.

Lim

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COFDM Modulator Demodulator Module Encoder Decoder HDMI CVBS AV Input AES 256 FHD RF streaming

Q: 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

Q: 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 (Gain) 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.

Q: 3. I tried to set - B bandwidth (kHz) and E bit rate (Mbps). 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.

SKU: wb 1776 Pawg: COFDM, TX RX Module, Unidirectional Ib-Txoj Kev Tags: COFDM, cofdm demodulator ua, Ib txoj kev

COFDM Modulator Demodulator Module Encoder Decoder HDMI CVBS AV Input AES 256 FHD RF streaming

Cov Lus Qhia

Another side view

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Yog xav paub ntxiv txog COFDM encoder board, thov mus saib ntawm no

COFDM Encoder module Advantage:

Ultra-low latency H.265/H.264 audio thiab video encoding siab tshaj plaws txhawb nqa 1080P@60 real-time video capture thiab encoding
HDMI lossis AV audio thiab video input, tom qab encoding, Ethernet chaw nres nkoj tso zis lossis tso zis rau wireless module, video encoding ntsis tus nqi yuav dynamically configured
Txhawb suab tswv yim thiab suab seev suab tso zis
Txhawb nqa ob cov yeeb yaj kiab (HDMI + AV) ib txhij input encoding (xaiv, Lub neej ntawd yog HDMI lossis AV encoding, xaiv ib qho los ntawm ob qho khoom siv nkag). )
Web UI los yog serial chaw nres nkoj UART AT hais kom ua rau configuration tswj

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Change RF connector from IPEX to MMCX for COFDM wireless video transmitter encoder modulator board

COFDM modulator-demodulator datasheet download tau

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The last version of the TX RX board

TX: V6.5.6p

RX: 4.1.2p

FAQs

1. What should I do when I found one Tx module doesn't generate RF output power?

Lus nug 1: Koj puas tuaj yeem qhia kuv ib feem ntawm cov khoom siv no, peb sim nrhiav hauv zos thiab xyuas. teb 1: Nws yog inductance npe LOH32PN2R2NNC.

COFDM-Transmitter-Module-no-tx output power — COFDM-Transmitter-Module-no-tx tso zis zog

Qhia Cov Ntsiab Lus Qhia: Yog hais tias lub hwj huam mov tam sim no ntawm lub rooj tsavxwm zoo tab sis tsis muaj RF tso zis, tej zaum cov hauv qab no tivthaiv TC1-1-13MX+ feem ntau puas lawm.
Txhawm rau kom tsis txhob muaj kev puas tsuaj rau cov cuab yeej no thaum thauj (cov cuab yeej nws tus kheej yog qhov siab), peb xaj cov kua nplaum liab tiv thaiv rau cov cuab yeej no thaum peb xa nws.

Tus kws tshaj lij kuj qhia kom koj xyuas seb lub cable puas xoob lossis tsis zoo.
Thov sim hloov FPC cable txuas ob lub rooj tsavxwm
We can provide spare parts if you're sure which one.

2. Koj puas tuaj yeem muab kuv UART AT cov ntaub ntawv hais kom ua rau tus qauv no?

Ntsoov

Thov xyuas qhov txuas hauv qab no.

Encoder Modulator Decoder Demodulator Module Parameter Configuration Instructions COFDM AT Command

3. Qhov no COFDM Video transmitter thiab receiver txhawb lub koob yees duab IP li cas?

1. Nws tsis yooj yim rau txuas rau IPC rau ib qho ib-txoj kev COFDM txuas. Peb muaj H264 qauv, uas txuas nrog IPC cov tswv yim los ntawm kev nthuav dav lub network chaw nres nkoj, tab sis muaj cov kev cai rau IPC qauv (tsis yog txhua tus qauv ntawm IPC tuaj yeem txuas nrog COFDM txuas), peb tau sim cov IPCs ntawm Hikvision, Dahua, thiab Xiongmai, thiab pom tias cov nyhuv kev sib txuas ntawm Hikvision yog qhov zoo tagnrho.

2. Nws yog tsis yooj yim sua kom ncaj qha tshem tawm HDMI CVBS encoder thiab txuas lub koob yees duab IP rau COFDM Transmitter board. Ib-txoj kev COFDM txuas rau IPC yuav tsum muaj cov txheej txheem tshwj xeeb kom paub.

3. Txoj kev zoo tshaj plaws yog pom zoo kom siv peb cov duab ob-txoj kev kis tau tus mob transceiver, uas ncaj qha txhawb nqa lub koob yees duab IP.

4. Yog tias tus neeg siv khoom yuav tsum siv COFDM transmitter board los txhawb lub koob yees duab IP, muaj ob lub ntsiab lus los saib xyuas.

5. Thawj qhov yog qhov teeb meem kev lag luam. Peb yuav tsum siv lwm txoj hauv kev los tso cai unidirectional COFDM txuas siv nrog IPC.

6.Yog tias koj xav txog IPC los ntawm qhov kev xav ntawm kev txo nqi, you don't need to consider it. Vim hais tias lub encoding board thiab decoding board tseem tsim nyog, tus nqi yuav cawm tsis tau.

7. The second point is the customer's usage habit, uas tsis yog txoj kev sib txuas ob txoj hauv kev. Lawv tuaj yeem saib IP Lub Koob Yees Duab Video thiab tseem tswj tau PTZ ntawm IP Lub Koob Yees Duab ntawm nplooj ntawv web lossis PC-sab PC software (UART AT cov lus txib).

8. Vim tias cov qauv no wireless txuas yog COFDM ib-txoj kev txuas; tsis muaj cov ntaub ntawv rov qab (tsuas yog ib-txoj kev kis tau tus mob; Cov ntaub ntawv tsis tuaj yeem kis tau los ntawm lub receiver mus rau lub transmitter); the customer can only watch the video of the IP Camera and cannot reversely configure the IP Camera's parameters or control the PTZ of the IPCamera.

9. Qhov no yog ib qho teeb meem uas ntau tus neeg muas zaub tau saib thaum xub thawj thiab tom qab yws txog tom qab siv nws.

10. So we don't recommend that the client choose a one-way COFDM transmitter and receiver for the IP camera. Peb muaj kev daws teeb meem zoo dua rau lub koob yees duab IP ntawm ob video txuas transceivers.

4. Koj puas tuaj yeem muab C / N rau kuv (BER = 2x10-4 tom qab Viterbi) rau txawv cov bandwidths 2, 4, 6, thiab 8 Mhz ntawm HDMI video txuas peb siv?

1. Tam sim no, tus receiver tsuas yog muab ob qhov tsis muaj teeb liab lub zog thiab qhov yuam kev me ntsis, thiab tsis muaj C/N parameter

2. Dab tsi tsis yog koj yuav tsum tau kho raws li qhov sib txawv bandwidths? Yog hais tias nws yog video code kwj, lub transmitter encoding board nws tus kheej yuav cia li xam qhov tsim nyog video kwj code tus nqi raws li tam sim no siv wireless tsis (bandwidth, GI, CR, thiab lwm yam), thiab tus lej video code yuav pom tom qab hloov lub bandwidth nrog lub parameter board yuav cia li hloov.

cofdm video transmitter parameter configuare tool — cofdm video transmitter parameter configuare cuab tam

3. Lo lus nug, Yog tias peb lub koob yees duab zoo txaus rau ob leeg 4 MHz thiab 8 MHz bandwidth. Nyob rau hauv cov ntaub ntawv no, Yuav tsum tus neeg siv khoom xaiv 4 MHz los yog 8 MHz?

teb: Peb txoj kev xa khoom COFDM ib leeg siv 4Mz wireless bandwidth los ntawm lub neej ntawd, sib xws rau tus nqi video me ntsis ntawm 3.12Mbps, uas txaus rau 1080p; Yog tias hloov mus rau 8MHz wireless bandwidth nyob rau hauv tib lub sijhawm, tus yees duab me ntsis tus nqi ob npaug rau 6.24Mbps. Txhua tus neeg siv khoom tuaj yeem xaiv ntawm wireless bandwidth 4MHz thiab 8MHz, txawm tias 6MHz kuj tuaj yeem txiav txim siab.

4. Lo lus nug: Qhov twg yog qhov zoo dua rau qhov tx + rx teeb tsa los ntawm qhov tau txais kev pom zoo?

teb: Rau kev sib txuas wireless, Nws tuaj yeem suav hais tias yooj yim tias qhov tau txais rhiab heev yuav siab dua ntawm qis wireless bandwidths. Los ntawm qhov kev xav ntawm kev txais rhiab heev, 4MHz>6MHz>8MHz

5. Dab tsi HDMI version yog tus qauv hauv Modulator input?

HDMI 1.4

6. Koj puas muaj COFDM Relay Repeater Modules rau Wireless Video Transmitter thiab Receiver?

Ntsoov

Thov xyuas qhov txuas hauv qab no

COFDM Relay Repeater module rau drone UAV wireless video transmitter thiab receiver Vcan1870

COFDM Relay repeater for wireless video transmitter and receiver — COFDM Relay repeater rau wireless video transmitter thiab receiver

7. Yuav xa kuv cov ntaub ntawv ntsuas rhiab heev rau 4/6/8 MHz cas? Piv txwv li, rau QPSK, 1/2CR, 1/32GI what threshold reception RX's input level (dBm)?

Ib channel txais rhiab heev:

-97+/-1dbm ntawm QPSK 8MHz,

-98+/-1dbm ntawm QPSK 6MHZ,
rhiab heev los ntawm 3dbm thaum tau txais nrog dual antennas

8. Puas yog qhov module no txhawb tshaj 1.4G? eg 2.4 g, 3G, los yog 3.6g?

Yog, kev pab txhawb nqa.

COFDM Video encoder modulator transmitter module 3.5G thiab 4G xeem tau.

9. Qhov twg kuv tuaj yeem rub tawm UDP player? Peb pom zoo Splayer_v4.2_2020.6.6 uas peb siv nquag.

Lub receiver default firmware txhawb RTSP player, Qee cov neeg siv khoom nyiam UDP player, uas peb kuj muab tau, then RTSP player doesn't support. (RTSP thiab UDP tsuas tuaj yeem xaiv ib qho ntawm ob lub firmware)

Thov download tau ntawm qhov link hauv qab no.

Splayer_v4.2_2020.6.6

https://drive.google.com/file/d/1ihzUhfnx2Wo3zLO8UAs1aUQeLswonJD-/view?usp=sharing

Splayer_v4.3_2022.10.22

https://drive.google.com/file/d/1PQc-LZ55qGnjeMsjkHYSloHfY3NEUsGH/view?usp=drive_link

UDP Player: Splayer teeb tsa rau kev ua neej nyob

10. Koj puas tuaj yeem muab lub thawv hlau los tiv thaiv COFDM receiver board?

Ntsoov, thov mus saib cov nram qab no daim duab.

long range Wireless Video Transmitter and Receiver for Camera drone — Ntev ntau Wireless Video Transmitter thiab Receiver rau lub koob yees duab drone

Tseem muaj lus nug?

Thov hu rau peb kom paub ntau ntxiv.

Xa koj cov lus nug

Yuav hloov HDMI lossis CVBS video input li cas ntawm UART AT hais kom ua?

How to upgrade the COFDM video receiver

How to upgrade the COFDM drone video encoder modulator board

COFDM Wireless Video encoder modulator board delay low latency — COFDM Wireless Video encoder modulator board

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Yog thawj saib xyuas "COFDM Modulator Demodulator Module Encoder Decoder HDMI CVBS AV Input AES 256 FHD RF streaming” Ncua tseg teb

107625

hom	ATSD $(mimo), $(gi), $(COFDM wireless kis tau tus mob system kis tus nqi suav), $ (hnub qub), $(zaus(KHz)), $(bw(KHz)), $(tx1_gain), $(tx2_gain)_ Piv txwv: ATSD0,1,0,0,800000,8000,86.0,86.0_
parameter	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 QAM 16; 2 QAM 64; 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 ~ 8 MHz, 1KHz step) RCB Channel bandwidth bw(KHz) 2000~8000 (2MHz ~ 8 MHz, 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
Rov qab tus nqi	xws li:ATSD0,1,0,0,800000,8000,86.0,86.0_ SISO,GI: 1/16, CR:1/2, MOD: QPSK, zaus:800000KHz,bw:8000KHz,tx1_gain:86.000000 tx2_gain:86.000000 OK
Ceeb toom	Teeb cov lus txib, txuag thaum fais fab tuag. Different Bandwidths, khwb Team sib, Convolution code rates, Data rate calculation formulas corresponding to constellations Air interface rate Rate(COFDM wireless kis tau tus mob system kis tus nqi suav) COFDM wireless kis tau tus mob system kis tus nqi suav (bandwidth(MHz) * 8.0/7.0) / (1+GI) * 1512/2048COFDM wireless kis tau tus mob system kis tus nqi suav(COFDM wireless kis tau tus mob system kis tus nqi suav) COFDM wireless kis tau tus mob system kis tus nqi suav * 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 $C:\Users\timyep\AppData\Roaming\Tencent\Users\157871537\QQ\WinTemp\RichOle\E0XEBCD_M4WD[M1BWR$}TK4.png$

27km 110km NLOS FAQ

kub HDMI ultra qis latency FAQ

Wireless Video Transmission Module

AI SDK Module Board

DVB-T2 Module

ISDB-T module

HDMI Encoder Board

Encoder Modulator Decoder Demodulator Module Parameter Configuration Instructions COFDM AT Command

Update Record:

Suitable Models

Command Introduction

Command Classification

Command Details

Ping Command

Set Device Command

Set Gain Command

Set Modulation Mode command

Get Device Status Command

Set Encoder Command

Get Encoder Command

Get Input Command

Set Input Command

Set Output Command

Teem Input Sources Command (hloov HDMI / CVBS tswv yim)

Get User Command

Set Receiver Command

Get Receiver Command

Get Bit Error Rate Command

Set Password Command

Set Data Transfer Command

Get Data Transfer Command

Set IP Address Command

Get IP Address Command

OSD Overlay Protocol

Set Gain To Adjust

Get Gain To Adjust

Serial Port Utility software download

FAQ

1. How can I return to the No Password setting with 000000 indications after the change?

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 (nce) good for linear output operation? Or do you suggest some limited range for better linear operation?

3. I tried to set – B bandwidth (kHz) and E bit rate (Mbps). When I set E, the new value does not apply. Yog li. the E setting is only for monitoring of available bitrate? if I wish to change the E (Ntsis) I have to change only B (bandwidth)? Am I right?

COFDM Modulator Demodulator Module Encoder Decoder HDMI CVBS AV Input AES 256 FHD RF streaming

COFDM Modulator Demodulator Module Encoder Decoder HDMI CVBS AV Input AES 256 FHD RF streaming

Another side view

COFDM Encoder module, CVBS / HDMI tswv yim, IP tso zis

COFDM Encoder module Advantage:

COFDM transmitter module

COFDM modulator-demodulator datasheet download tau

The last version of the TX RX board

FAQs

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