Encoder Modulator Decoder Demodulator Module Parameter Configuration Instructions COFDM AT Command

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

Click to access Encoder-Modulator-and-Decoder-Demodulator.pdf

Update Record:

Versio	Treffi	Kuvaus
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-taso, 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 teksti, esimerkiksi:

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

Muoto	ATDR_
Parametri	Ei
Käyttää	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
Huomautus	query command

Set Device Command

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Set Gain Command

Muoto	ATSG$( tx1_gain),$( tx1_gain)_ Esimerkki: ATSG85.0,85.0_
Parametri	tx1_gain: Lähetin 1 saada tx2_gain: Lähetin 2 saada
Käyttää	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 (lähetin)
Return Value,	Esimerkki: ATSG85.0,85.0_set gain 85.000000 85.000000 kunnossa
Huomautus	setting command, power off will not save.

Set Modulation Mode command

Muoto	ATSM$(gi), $(Keskitaajuuspiste), $(constellation)_ Esimerkki: ATSM1,1,2_
Parametri	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; tähdistö: 0 QPSK; 1 QAM16; 2 QAM64
Käyttää	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 (lähetin)
Return Value	Esimerkki:ATSM1,1,2_GI:1/16, CR:2/3, MOD: QAM64, kunnossa
Huomautus	setting command, power off will not save.

Get Device Status Command

Muoto	ATGD_
Parametri	Ei
Käyttää	query the current number of transmit antennas, suojavälin, convolution code rate, number of constellations, transmit frequency, kaistanleveys, gain parameters (lähetin)
Return Value	Esimerkki: ATGD_ SISO, GI:1 /16, CR: 1/2, MOD: QPSK, taaj: 800000kHz, bw: 8000kHz, tx1_gain: 86.000000 tx2_gain: 86.000000 kunnossa
Huomautus	query command

Set Encoder Command

Muoto	ATSE$(llc),$(rt),$(bitrate) ,$(gop),$(audio-)_ Esimerkki: ATSE0,0,0.0,0,0_
Parametri	1. Enhanced data reliability option llc: 0 disable; 1 ota käyttöön (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. Bittinopeus: 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 ota käyttöön
Käyttää	Used to set encoding parameters (Lähetin)
Return Value	Esimerkki:ATSE0, 0,0.0,0,0_ TILA:0,RT:0,bitrate: 0.0Mbps,gop:0,audio-:0,kunnossa
Huomautus	setting command, save when power is off.

Get Encoder Command

Muoto	ATGE_
Parametri	Ei
Käyttää	querying encoding parameters (sending end)
Return Value	Esimerkki:ATGE_MODE:0, RT:0,bitrate:4.0Mbps,gop:10,audio-:0,aes:0, kunnossa
Huomautus	Query command AES means the current encryption status: 0 disable; 1 ota käyttöön

Get Input Command

Muoto	ATGI_
Parametri	Ei
Käyttää	query the current camera input parameters (lähetin)
Return Value	Esimerkki:ATGI_input_size: 1080p, input_rate: 60fps, sensor_type: hdmi,kunnossa
Huomautus	query command

Set Input Command

Muoto	ATSI$(input_size),$(input_rate)_ Esimerkki: ATSI1080,25_
Parametri	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
Käyttää	To specify the input resolution and frame rate to meet some special signal sources, or some special application needs (lähetin)
Return Value	Esimerkki: ATSI1080,25_ Input_size:1080p,input_rate: 25fps, kunnossa
Huomautukset	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

Muoto	ATSO$(output_size),$(output_rate)_ Esimerkki: ATSO720,30_
Parametri	1. Lähetin: encoding output resolution output_size: 0 equal to input_size; >0 specify output size 2. Vastaanotin: HDMI output resolution (720, 1080) 3. Lähetin: encoding output frame rate output_rate: 0 equal to input_rate; >0 specify output_rate (fps) 4. Vastaanotin: HDMI output frame rate 720p supports frame rate (50, 60); 1080p supports frame rate (24, 25, 30, 50, 60)
Käyttää	1. Lähetin: Used to specify the encoding output resolution and frame rate to meet the requirements of certain applications for zooming and frame reduction 2. Vastaanotin: used to configure the resolution and frame rate of HDMI output
Return Value	Esimerkki: ATSO720,30_ output_size: 720p, output_rate: 30fps, kunnossa
Huomautukset	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 / CVBS)

Muoto	ATSU$(vin),$(ain)_ Esimerkki: ATSU0,1 _
Parametri	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
Käyttää	Used to meet specific application requirements (Esimerkki: HDMI/SDI input video, MIC input audio)
Return Value	Esimerkki: ATSU0,1_ ATSU0,1 OK
Huomautus	setting command, power-off save.

Get User Command

Muoto	ATGU _ Esimerkki: ATGU_
Parametri	Ei
Käyttää	To query user-specific configuration
Return Value	Esimerkki: ATGU_ ATGU0,1 OK
Huomautus	query command return parameter description please refer to the ATSU command

Set Receiver Command

Muoto	ATSR $(taaj), $(bw ), $(llc), $(cvbs)_ Esimerkki: ATSR320000,6000,0,0_
Parametri	1. DR2C carrier frequency freq(kHz) 200000~860000(200MHz ~ 860MHz, 1KHz askel) 2. DR900 carrier center frequency freq(kHz) 200000~1600000(200MHz~1.6GHz, 1KHz askel) 3. DR2C channel bandwidth bw(kHz) 2000~8000(2MHz ~ 8MHz, 1KHz askel) 4. DR900 channel bandwidth bw(kHz) 3200~8000(3.2MHz ~ 8MHz, 1KHz askel) 5. Enhanced data reliability option llc: 0 disable; 1 ota käyttöön (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
Käyttää	To set the receiver parameter
Return Value	example: ATSR320000,6000,0,0_ ATSR320000,6000,0,0 OK
Huomautus	setting command, save when power is off.

Get Receiver Command

Muoto	ATGR_
Parametri	Ei
ATGR_	the receiving end parameter
Return Value	Esimerkki: ATGR_ ATGR320000,6000,0,aes:0,cvbs:0 kunnossa
Huomautus	1. Query command 2. Aes parameter indicates the current encryption status: 0 disable;1 ota käyttöön 3. CVBS parameter Indicates the current AV output standard: 0 pal;1 ntsc

Get Bit Error Rate Command

Muoto	ATGB_
Parametri	Ei
Käyttää	querying the bit error rate and signal strength of the dual antennas at the receiving end
Return Value	Esimerkki: ATGB_ ATGB ber1:0.00% ber2:0.00% RSSI1 :54 RSSI2:53 Lock1:1 Lock2:1 kunnossa
Huomautukset	1. Query commands 2. Ber1 and ber2 respectively indicate the bit error rate of each antenna, vaihtelevat 0.0% että 100.0% 3. RSSI1 and RSSI2 respectively indicate the signal strength of each antenna, vaihtelevat 0 että 100 4. Lock1 and Lock2 respectively indicate the signal locking status of each antenna (1 Represents signal lock)

Set Password Command

Muoto	ATSP$(Salasana), $(Salasana)_ Esimerkki: ATSP123456, 123456_
Parametri	AES key password: 6-digit password (ASCII) AES key password: 6-digit password (ASCII) (repeat it for confirmation)
Käyttää	Used to set the AES key of the transceiver (lähetin ja vastaanotin)
Return Value	Esimerkki: ATSP123456_ ATSP123456 OK
Huomautus	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

Muoto	ATST$(siirtonopeus), $( parity)_ Esimerkki: ATST115200,0_
Parametri	1. Baud rate baud rate: 1200、2400、4800、9600、19200、38400、57600、115200 2. Check Code: 0: Ei mitään; 1: Odd; 2: Even
Käyttää	Used to set the baud rate and parity bit of the serial port for data transparent transmission
Return Value	Esimerkki: ATST115200,0_ ATST115200,0 OK
Huomautukset	Set command

Get Data Transfer Command

Muoto	ATGT_
Parametri	Ei
Käyttää	Used to query the baud rate and check code
Return Value	Esimerkki: ATGT_ ATGT115200,0 OK
Huomautukset	Query command

Set IP Address Command

Muoto	ATSIP$(ip), $(ip)_ Esimerkki: ATSIP192.168.1.215,192.168.1.215_
Parametrit	Local IP address Local IP address (repeat to confirm)
Käyttää	Used to set the receiver IP address
Return Value	Esimerkki: ATSIP_192.168.1 .215,192.168.1.215_ ATSIP192.168.1.215 OK
Huomautukset	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

Muoto	ATGIP_ Esimerkki: ATGIP_
Parametri	Ei
Käyttää	to query the current IP address of the receiving end
Return value	Esimerkki: ATGIP_ ATGIP192.168.0.215 OK
Huomautus	query command

OSD Overlay Protocol

Muoto	ATOSD$(idx), $(x), $(y), $(str)_ Esimerkki:ATOSD0,40,20,height: 100m_
Parametri	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)
Käyttää	on the video screen.OSD information
Return value	Ei
Huomautukset	1. The user specifies the x and y coordinates of the OSD display according to the maximum 1920×1080 kuvapistettä, 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

Muoto	ATSAD$(taaj),$(adjust) _ Esimerkki:ATSAD700000,2.5_
Parametri	wireless central working frequency： Taaj(kHz) 200000~2700000(200MHz~2.7GHz, step: 1kHz) Adjust the value(dB): ATSD cmd will subtract this value to set the wireless gain
toiminto	Specify and adjust the value for the wireless gain setting using by ATSD cmd
palaute	Esimerkki: ATSAD700000,2.5_ freq:700000,adjust:2.50 kunnossa
Kommentit	Setting command is still valid when stopping power or resetting.

Get Gain To Adjust

Muoto	ATGAD[$(taaj)]_ Esimerkki:ATGAD700000_
Parametri	wireless central working frequency： Taaj(kHz) 200000~2700000(200MHz~2.7GHz, step: 1kHz) When no parameter provides, it will list all the freq that have adjusted value.
toiminto	Inquiry adjust the value for wireless gain setting using ATSD cmd
palaute	Esimerkki: ATGAD700000_ freq:700000,adjust:2.50 OK ATGAD_ freq:700000 750000 kunnossa
Kommentit	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 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 (Saada) 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. So. the E setting is only for monitoring of available bitrate? if I wish to change the E (Bittinopeus) I have to change only B (kaistanleveys)? 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.
Oletuksena, 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.

Suodattaa

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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: Vcan1776 Luokat: COFDM, TX RX -moduuli, Yksisuuntainen yksisuuntainen Tunnisteet: COFDM, cofdm demodulator, Yksisuuntainen

COFDM-modulaattori demodulaattorimoduuli enkooderi dekooderi HDMI CVBS AV-tulo AES 256 FHD RF -suoratoisto

Sisällysluettelo

Another side view

Modulator Demodulator Module Encoder Decoder HDMI CVBS AV Input AES 256 FHD RF streaming parameter configuration board — COFDM Modulator Demodulator HDMI CVBS Module Encoder Decoder HDMI CVBS AV Input AES 256 FHD RF streaming parameter configuration board

COFDM Encoder module, CVBS / HDMI-tulo, IP output

Composite CVBS input IP RJ45 Ethernet output Ultra-low latency encoder board, HDMI CVBS Encoder — Komposiitti-CVBS-sisääntulo IP RJ45 Ethernet-lähtö Erittäin matalan latenssin enkooderikortti, HDMI CVBS Enkooderi

For More details about the COFDM encoder board, please visit here

COFDM Encoder module Advantage:

Erittäin pieni latenssi H.265/H.264-äänen ja -kuvan koodauksen maksimituki 1080P@60 reaaliaikaista videon sieppausta ja koodausta
HDMI tai AV audio- ja videotulo, koodauksen jälkeen, Ethernet-portin lähtö tai lähtö langattomaan moduuliin, videokoodauksen bittinopeus voidaan määrittää dynaamisesti
Tukemaan äänen sisäänmeno ja dekoodaus ulostulo
Tukee kahta videota (HDMI + AV) samanaikaisen tulon koodaus (vaihtoehto, oletus on HDMI- tai AV-koodaus, valitse yksi kahdesta tulolähteestä). )
Verkkokäyttöliittymä tai sarjaportti UART AT -komento for configuration management

HDMI CVBS composite SDI video input encoder board digital IP ethernet output H264 H265 module board — HDMI CVBS komposiitti SDI-videotulokooderikortti digitaalinen IP ethernet-lähtö H264 H265-moduulikortti

COFDM transmitter module

COFDM Wireless video transmitter module RCB board

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

COFDM modulator-demodulator datasheet download

COFDM demodulator Vcan1776RX-H264 datasheet

The last version of the TX RX board

TX: V6.5.6p

RX: 4.1.2p

UKK

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

Question1: Could you please tell me part number of this component, we try to find localy and check. Vastaus 1: It is a inductance named LOH32PN2R2NNC.

COFDM-Transmitter-Module-no-tx output power

Suggest Check Points: If the power supply current of the board is well but there is no RF output, maybe the below component TC1-1-13MX+ is generally damaged.
In order to avoid damage to this device during transportation (the device itself is relatively high), we ordered red glue protection for this device when we shipped it.

The engineer also suggests that you check to see if the cable is loose or in poor contact.
Please try to replace the FPC cable connecting the two boards
We can provide spare parts if you're sure which one.

2. Can you offer me the UART AT command file for this model?

Varma

Tarkista alla oleva linkki.

Encoder Modulator Decoder Demodulator Module Parameter Configuration Instructions COFDM AT Command

3. How does this COFDM Video transmitter and receiver support an IP camera?

1. It is not easy to connect to IPC for a one-way COFDM link. We have an H264 model, which is connected to IPC input by expanding the network port, but there are requirements for IPC models (not all models of IPC can be well connected with COFDM links), we have tested the IPCs of Hikvision, Dahua, and Xiongmai, and found that the connection effect of Hikvision is quite ideal.

2. It is impossible to directly remove the HDMI CVBS encoder and connect the IP Camera to the COFDM Transmitter board. One-way COFDM connection to IPC requires special technical methods to realize.

3. The best way is to recommend using our two-way image transmission transceiver, which directly supports the IP camera.

4. If the customer must use the COFDM transmitter board to support the IP camera, there are two points to pay attention to.

5. The first point is a technical problem. We need to use an alternative method to allow unidirectional COFDM links to be used with IPC.

6.If you consider IPC from the perspective of cost reduction, you don't need to consider it. Because the encoding board and decoding board are still necessary, the cost cannot be saved.

7. The second point is the customer's usage habit, which is no longer the traditional two-way link method. They can view the IP Camera Video and even control the PTZ of the IP Camera via the web page or PC-side PC software (UART AT -komennot).

8. Because of this model wireless link is a COFDM one-way link; there is no reverse data (only one-way transmission; data cannot be transmitted from the receiver to the 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. This is a problem that many customers overlooked at first and later complained about after using it.

10. So we don't recommend that the client choose a one-way COFDM transmitter and receiver for the IP camera. We have a better solution for the IP Camera via two video link transceivers.

4. Could you please give me the Required C/N (BER=2x10-4 after Viterbi) for different the bandwidths 2, 4, 6, ja 8 Mhz of HDMI video link we use?

1. Nykyisessä, the receiver only provides two parameters of signal strength and bit error rate, and there is no C/N parameter

2. What parameters do you need to adjust according to different bandwidths? If it is a video code stream, the transmitter encoding board itself will automatically calculate the appropriate video stream code rate according to the currently used wireless parameters (kaistanleveys, GI, CR, jne.), and the video code rate will be found after changing the bandwidth with the parameter board will automatically adapt.

cofdm video transmitter parameter configuare tool

3. kysymys, If our camera quality is good enough for both 4 MHz ja 8 MHz: n kaistanleveydellä. Tässä tapauksessa, Should the customer choose 4 MHz tai 8 MHz?

Vastaus: Our one-way COFDM shipments use 4Mz wireless bandwidth by default, corresponding to a video bit rate of 3.12Mbps, which is enough for 1080p; If changed to 8MHz wireless bandwidth under the same conditions, the video bit rate doubles to 6.24Mbps. All customers can choose between wireless bandwidth 4MHz and 8MHz, even 6MHz can also be considered.

4. kysymys: Which is better for this tx+rx set from a receive sensitivity view?

Vastaus: For wireless links, it can be simply considered that the receiving sensitivity will be higher at lower wireless bandwidths. From the perspective of receiving sensitivity, 4MHz>6MHz>8MHz

5. What HDMI version is standard in Modulator input?

HDMI 1.4

6. Do you have any COFDM Relay Repeater Modules for the Wireless Video Transmitter and Receiver？

Varma

Tarkista alla oleva linkki

COFDM-reletoistinmoduuli drone UAV -videolähettimelle ja -vastaanottimelle Vcan1870

COFDM Relay repeater for wireless video transmitter and receiver — COFDM Reletoistin langattomalle videolähettimelle ja vastaanottimelle

7. Could send me a data measurement of sensitivity for 4/6/8 MHz cases? Esimerkiksi, for QPSK, 1/2CR, 1/32GI what threshold reception RX's input level (dBm)?

Single channel receiving sensitivity:

-97+/-1dBm at QPSK 8MHz,

-98+/-1dBm at QPSK 6MHZ,
Sensitivity increased by 3dbm when receiving with dual antennas

8. Does this module support over 1.4G? for example 2.4G, 3G, or 3.6G？

Joo, tuki.

COFDM Video encoder modulator transmitter module 3.5G and 4G test result.

9. Where can I download the UDP player? We recommend Splayer_v4.2_2020.6.6 which we use frequently.

The receiver default firmware supports RTSP player, some clients prefer UDP player, which we also can offer, then RTSP player doesn't support. （RTSP and UDP can only choose one of the two firmware）

Lataa alla olevasta linkistä.

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 setting for living stream

10. Can you offer a metal box to protect the COFDM receiver board?

Varma, tarkista alla oleva kuva.

long range Wireless Video Transmitter and Receiver for Camera drone

Vielä on kysymys?

Ota yhteyttä saadaksesi lisätietoja.

Lähetä kysymyksesi

How to switch HDMI or CVBS video input via the UART AT command?

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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107625

Muoto	ATSD $(mimo), $(gi), $(Keskitaajuuspiste), $ (constellation), $(taaj(kHz)), $(bw(kHz)), $(tx1_gain), $(tx2_gain)_ Esimerkki: ATSD0,1,0,0,800000,8000,86.0,86.0_
Parametri	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; tähdistö: 0 QPSK; 1 QAM16; 2 QAM64; RCB Carrier Center Frequency(kHz) 200000~2700000(200MHz~2.7GHz, 1KHz askel) RC900 Carrier center Frequency(kHz) 750000~930000(750MHz ~ 930MHz, 1KHz askel) RCB Channel bandwidth bw(kHz) 2000~8000(2MHz ~ 8MHz, 1KHz askel) RCB Channel bandwidth bw(kHz) 2000~8000 (2MHz ~ 8MHz, 1KHz askel) 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	kuten:ATSD0,1,0,0,800000,8000,86.0,86.0_ SISO,GI: 1/16, CR:1/2, MOD: QPSK, taaj:800000kHz,bw:8000kHz,tx1_gain:86.000000 tx2_gain:86.000000 kunnossa
Huomautus	Set command, save when power off. Different Bandwidths, Guard väliajoin, Convolution code rates, Data rate calculation formulas corresponding to constellations Air interface rate Rate(Keskitaajuuspiste) Keskitaajuuspiste (kaistanleveys(MHz) * 8.0/7.0) / (1+GI) * 1512/2048Keskitaajuuspiste(Keskitaajuuspiste) Keskitaajuuspiste * 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

kuumin HDMI erittäin pieni latenssi FAQ

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AI SDK Module Board

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HDMI Enkooderikortti

Encoder Modulator Decoder Demodulator Module Parameter Configuration Instructions COFDM AT Command

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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

Set Input Sources Command (switch HDMI / CVBS)

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 (Saada) 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. So. the E setting is only for monitoring of available bitrate? if I wish to change the E (Bittinopeus) I have to change only B (kaistanleveys)? Am I right?

COFDM-modulaattori demodulaattorimoduuli enkooderi dekooderi HDMI CVBS AV-tulo AES 256 FHD RF -suoratoisto

COFDM-modulaattori demodulaattorimoduuli enkooderi dekooderi HDMI CVBS AV-tulo AES 256 FHD RF -suoratoisto

Another side view

COFDM Encoder module, CVBS / HDMI-tulo, IP output

COFDM Encoder module Advantage:

COFDM transmitter module

COFDM modulator-demodulator datasheet download

The last version of the TX RX board

UKK

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