Encoder Modulator Decoder Demodulator Module Parameter Configuration Instructions COFDM AT Command
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.
Update Record:
| ဗားရှင်း | နေ့စှဲ | ဖေါ်ပြချက် |
| 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
-
မောင်းသူမဲ့လေယာဉ် UAV ကြိုးမဲ့ဗီဒီယိုထုတ်လွှင့်သူနှင့် လက်ခံသူ Vcan1870 အတွက် COFDM Relay Repeater module -
COFDM Modulator Demodulator Module Encoder Decoder HDMI CVBS AV ထည့်သွင်းမှု AES 256 FHD RF ထုတ်လွှင့်ခြင်း။ -
ကင်မရာအတွက် Wireless Video Transmitter နှင့် Receiver, HDMI HD H265 264 ကုဒ်နံပါတ် 1W/2.5W PA 1080P60 Vcan1726 -
HDMI To IP ကုဒ်ပြောင်းကိရိယာ မော်ဂျူး CVBS H.265 H.264 ကုဒ်ဝှက်ဘုတ် pcba Ethernet RSTP UDP UAV Drone စက်ရုပ်အတွက်
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 အဆင့်အထိ, 3.3V ကို) 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 စာသား, ဥပမာ:
ကို 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
| format | ATDR_ |
| parameter | အဘယ်သူမျှမ |
| အသုံး | for the integrated system to check whether the serial port is connected and identify the connected modules. |
| တန်ဘိုး ပြန်ပေး | RCB returns the “device profile” string SUE1 returns “ATDRSUE1 OK” string SHD1 returns “ATDRSHD1 OK” string |
| ပွောဆို | query command |
Set Device Command
| format | ATSD $(mimo), $(gi), $(ပြင်ဆင်သတ်မှတ်နိုင်သော RF အထွက်ပါဝါ), $ (ကြယ်စု), $(ကြိမ်နှုန်း(kHz)), $(bw(kHz)), $(tx1_gain), $(tx2_gain)_ ဥပမာ: ATSD0,1,0,0,800000,8000,86.0,86.0_ |
| parameter | One Antenna/Dual antenna mimo: 0 mimo disable; 1 mimo enable Guard Interval GI: 0 1/32; 1 1/16; 2 1/8; 3 1/4 Convolution Code Rate: 0 1/2; 1 2 /3; 2 3/4; 3 5/6; 4 7/8; constellation: 0 QPSK; 1 QAM16; 2 QAM64; RCB Carrier Center Frequency(kHz) 200000~2700000(200MHz~2.7GHz, 1KHz အဆင့်) RC900 Carrier center Frequency(kHz) 750000~930000(750MHz ~ 930MHz, 1KHz အဆင့်) RCB Channel bandwidth bw(kHz) 2000~8000(2MHz ~ 8MHz, 1KHz အဆင့်) RCB Channel bandwidth bw(kHz) 2000~8000 (2MHz ~ 8MHz, 1KHz အဆင့်) Transmitting antenna 1 gain tx1_gain 0.0~89.75dB, 0.25dB stepping Transmitting antenna 2 gain tx2_gain 0.0~89.75dB, 0.25dB stepping |
| Return Value | ကဲ့သို့:ATSD0,1,0,0,800000,8000,86.0,86.0_ SISO,GI: 1/16, CR:1/2, MOD: QPSK, ကြိမ်နှုန်း:800000kHz,bw:8000kHz,tx1_gain:86.000000 tx2_gain:86.000000 အိုကေ |
| မှတ်စု | Set command, save when power off. Different Bandwidths, စောင့်တပ်ဖွဲ့ကြားကာလ, Convolution code rates, Data rate calculation formulas corresponding to constellations Air interface rate Rate(ပြင်ဆင်သတ်မှတ်နိုင်သော RF အထွက်ပါဝါ) ပြင်ဆင်သတ်မှတ်နိုင်သော RF အထွက်ပါဝါ (bandwidth(MHz) * 8.0/7.0) / (1+GI) * 1512/2048*ပြင်ဆင်သတ်မှတ်နိုင်သော RF အထွက်ပါဝါ(ပြင်ဆင်သတ်မှတ်နိုင်သော RF အထွက်ပါဝါ) * ပြင်ဆင်သတ်မှတ်နိုင်သော RF အထွက်ပါဝါ * 188/204. Taking 8MHz bandwidth as an example, different guard intervals, convolution code rates, data rates corresponding to constellations and required receiving signal-to-noise ratios  |
Set Gain Command
| format | ATSG$( tx1_gain),$( tx1_gain)_ ဥပမာ: ATSG85.0,85.0_ |
| parameter | tx1_gain: transmitter 1 အမြတ် tx2_gain: transmitter 2 အမြတ် |
| အသုံး | To dynamically adjust the output power. If the signal SNR/RSSI of the receiver is high, the output power can be reduced through the remote control link. When the SNR/RSSI of the end signal is low, increase the output power (transmitter ကို) |
| Return Value, | ဥပမာ: ATSG85.0,85.0_set gain 85.000000 85.000000 အိုကေ |
| ပွောဆို | setting command, power off will not save. |
Set Modulation Mode commanဃ
| format | ATSM$(gi), $(ပြင်ဆင်သတ်မှတ်နိုင်သော RF အထွက်ပါဝါ), $(ကြယ်စု)_ ဥပမာ: ATSM1,1,2_ |
| parameter | Gard interval GI: 0 1/32; 1 1/16; 2 1/8; 3 1 /4; Convolution code rate: 0 1/2; 1 2/3; 2 3/4; 3 5/6; 4 7/8; constellation: 0 QPSK; 1 QAM16; 2 QAM64 |
| အသုံး | Dynamically adjust the air interface rate, the air interface rate can be increased when the distance is short, and the air interface rate can be reduced when the distance is long (transmitter ကို) |
| Return Value | ဥပမာ:ATSM1,1,2_GI:1/16, CR:2/3, MOD: QAM64, အိုကေ |
| ပွောဆို | setting command, power off will not save. |
, Get Device Status Command
| format | ATGD_ |
| parameter | အဘယ်သူမျှမ |
| အသုံး | query the current number of transmit antennas, ကိုယ်ရံတော်ကြားကာလ, convolution code rate, number of constellations, transmit frequency, bandwidth ကို, gain parameters (transmitter ကို) |
| Return Value | ဥပမာ: ATGD_ SISO, GI:1 /16, CR: 1/2, MOD: QPSK, ကြိမ်နှုန်း: 800000kHz, bw: 8000kHz, tx1_gain: 86.000000 tx2_gain: 86.000000 အိုကေ |
| ပွောဆို | query command |
Set Encoder Command
| format | ATSE$(llc),$(rt),$(bitrate) ,$(gop),$(အသံ)_ ဥပမာ: 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. 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 enable |
| အသုံး | Used to set encoding parameters (transmitter) |
| Return Value | ဥပမာ:ATSE0, 0,0.0,0,0_ MODE:0,RT:0,bitrate: 0.0Mbps,gop:0,အသံ:0,အိုကေ |
| ပွောဆို | setting command, save when power is off. |
Get Encoder Command
| format | ATGE_ |
| parameter | အဘယ်သူမျှမ |
| အသုံး | querying encoding parameters (sending end) |
| Return Value | ဥပမာ:ATGE_MODE:0, RT:0,bitrate:4.0Mbps,gop:10,အသံ:0,aes:0, အိုကေ |
| ပွောဆို | Query command AES means the current encryption status: 0 disable; 1 enable |
Get Input Command
| format | ATGI_ |
| parameter | အဘယ်သူမျှမ |
| အသုံး | query the current camera input parameters (transmitter ကို) |
| Return Value | ဥပမာ:ATGI_input_size: 1080p, input_rate: 60fps, sensor_type: hdmi,အိုကေ |
| ပွောဆို | query command |
Set Input Command
| format | ATSI$(input_size),$(input_rate)_ ဥပမာ: ATSI1080,25_ |
| parameter | 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 |
| အသုံး | To specify the input resolution and frame rate to meet some special signal sources, or some special application needs (transmitter ကို) |
| Return Value | ဥပမာ: ATSI1080,25_ Input_size:1080p,input_rate: 25fps, အိုကေ |
| မှတ်ချက်တွေ | 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
| format | ATSO$(output_size),$(output_rate)_ ဥပမာ: 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) |
| အသုံး | 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 |
| Return Value | ဥပမာ: ATSO720,30_ output_size: 720p, output_rate: 30fps, အိုကေ |
| မှတ်ချက်တွေ | 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 input ကို)
| format | ATSU$(vin),$(ain)_ ဥပမာ: ATSU0,1 _ |
| parameter | 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 |
| အသုံး | Used to meet specific application requirements (ဥပမာ: HDMI/SDI input video, MIC input audio) |
| Return Value | ဥပမာ: ATSU0,1_ ATSU0,1 OK |
| ပွောဆို | setting command, power-off save. |
Get User Command
| format | ATGU _ ဥပမာ: ATGU_ |
| parameter | အဘယ်သူမျှမ |
| အသုံး | To query user-specific configuration |
| Return Value | ဥပမာ: ATGU_ ATGU0,1 OK |
| ပွောဆို | query command return parameter description please refer to the ATSU command |
Set Receiver Command
| format | ATSR $(ကြိမ်နှုန်း), $(bw ), $(llc), $(cvbs)_ ဥပမာ: ATSR320000,6000,0,0_ |
| parameter | 1. DR2C carrier frequency freq(kHz) 200000~860000(200MHz ~ 860MHz, 1KHz အဆင့်) 2. DR900 carrier center frequency freq(kHz) 200000~1600000(200MHz~1.6GHz, 1KHz အဆင့်) 3. DR2C channel bandwidth bw(kHz) 2000~8000(2MHz ~ 8MHz, 1KHz အဆင့်) 4. DR900 channel bandwidth bw(kHz) 3200~8000(3.2MHz ~ 8MHz, 1KHz အဆင့်) 5. Enhanced data reliability option llc: 0 disable; 1 enable (it is required that the transmitter should also enable this option at the same time, and use it in pairs. Since more redundant data is added to enhance reliability, the video bit rate of the transmitter should be set to when this option is turned off half of) 6. AV output system cvbs: 0 pal; 1 ntsc |
| အသုံး | To set the receiver parameter |
| Return Value | example: ATSR320000,6000,0,0_ ATSR320000,6000,0,0 OK |
| ပွောဆို | setting command, save when power is off. |
Get Receiver Command
| format | ATGR_ |
| parameter | အဘယ်သူမျှမ |
| ATGR_ | the receiving end parameter |
| Return Value | ဥပမာ: ATGR_ ATGR320000,6000,0,aes:0,cvbs:0 အိုကေ |
| ပွောဆို | 1. Query command 2. Aes parameter indicates the current encryption status: 0 disable;1 enable 3. CVBS parameter Indicates the current AV output standard: 0 pal;1 ntsc |
Get Bit Error Rate Command
| format | ATGB_ |
| parameter | အဘယ်သူမျှမ |
| အသုံး | querying the bit error rate and signal strength of the dual antennas at the receiving end |
| Return Value | ဥပမာ: ATGB_ ATGB ber1:0.00% ber2:0.00% RSSI1 :54 RSSI2:53 Lock1:1 Lock2:1 အိုကေ |
| မှတ်ချက်တွေ | 1. Query commands 2. Ber1 and ber2 respectively indicate the bit error rate of each antenna, ranging from 0.0% သို့ 100.0% 3. RSSI1 and RSSI2 respectively indicate the signal strength of each antenna, ranging from 0 သို့ 100 4. Lock1 and Lock2 respectively indicate the signal locking status of each antenna (1 Represents signal lock) |
Set Password Command
| format | ATSP$(စကားဝှက်), $(စကားဝှက်)_ ဥပမာ: ATSP123456, 123456_ |
| parameter | AES key password: 6-ဂဏန်းစကားဝှက် (ASCII) AES key password: 6-ဂဏန်းစကားဝှက် (ASCII) (repeat it for confirmation) |
| အသုံး | Used to set the AES key of the transceiver (transmitter ကိုနှင့်လက်ခံ) |
| Return Value | ဥပမာ: ATSP123456_ ATSP123456 OK |
| ပွောဆို | 1. When the password is all 0, AES encryption is turned off. 2. Set the command and save it after powering it off. |
Set Data Transfer Command
| format | ATST$(baud rate ကို), $( parity)_ ဥပမာ: ATST115200,0_ |
| parameter | 1. Baud rate baud rate: 1200、2400、4800、9600、19200、38400、57600、115200 2. Check Code: 0: တစ်ခုမှ; 1: အထူးအဆန်း; 2: ပင် |
| အသုံး | Used to set the baud rate and parity bit of the serial port for data transparent transmission |
| Return Value | ဥပမာ: ATST115200,0_ ATST115200,0 OK |
| မှတ်ချက်တွေ | Set command |
Get Data Transfer Command
| format | ATGT_ |
| parameter | အဘယ်သူမျှမ |
| အသုံး | Used to query the baud rate and check code |
| Return Value | ဥပမာ: ATGT_ ATGT115200,0 OK |
| မှတ်ချက်တွေ | Query command |
Set IP Address Command
| format | ATSIP$(ip), $(ip)_ ဥပမာ: ATSIP192.168.1.215,192.168.1.215_ |
| ကန့်သတ်ချက်များ | Local IP address Local IP address (repeat to confirm) |
| အသုံး | Used to set the receiver IP address |
| Return Value | ဥပမာ: ATSIP_192.168.1 .215,192.168.1.215_ ATSIP192.168.1.215 OK |
| မှတ်ချက်တွေ | 1. After setting the IP address, the receiving end needs to be restarted to take effect. 2. Set the command and save it after powering it off. |
Get IP Address Command
| format | ATGIP_ ဥပမာ: ATGIP_ |
| parameter | အဘယ်သူမျှမ |
| အသုံး | လက်ခံရရှိမှုအဆုံး၏ လက်ရှိ IP လိပ်စာကို မေးမြန်းရန် |
| တန်ဘိုး ပြန်ပေး | ဥပမာ: ATGIP_ ATGIP192.168.0.215 အိုကေ |
| ပွောဆို | query command |
OSD Overlay Protocol
| format | ATOSD$(idx), $(x က), $(y), $(str)_ ဥပမာ:ATOSD0,40,20,height: 100m_ |
| parameter | 1. IDX index: 0~7 (supports OSD overlay for 8 areas) 2. X-coordinate: 0~1919 3. Y coordinate: 0~1079 4. str: the string to be displayed at the corresponding coordinates (the space symbol is used to clear the display) |
| အသုံး | on the video screen.OSD information |
| တန်ဘိုး ပြန်ပေး | အဘယ်သူမျှမ |
| မှတ်ချက်တွေ | 1. The user specifies the x and y coordinates of the OSD display according to the maximum 1920×1080 pixels ကို, and the system will correct the coordinates according to the actual display situation. 2. The ‘_’ character cannot be contained in the str parameter |
Set Gain To Adjust
| format | ATSAD$(ကြိမ်နှုန်း),$(adjust) _ ဥပမာ:ATSAD700000,2.5_ |
| parameter | wireless central working frequency： Freq(kHz) 200000~2700000(200MHz~2.7GHz, step: 1kHz) Adjust the value(dB): ATSD cmd will subtract this value to set the wireless gain |
| လုပ်ဆောင်ချက် | Specify and adjust the value for the wireless gain setting using by ATSD cmd |
| တုံ့ပြန်ချက် | ဥပမာ: ATSAD700000,2.5_ freq:700000,adjust:2.50 အိုကေ |
| မှတ်ချက်များ | Setting command is still valid when stopping power or resetting. |
Get Gain To Adjust
| format | ATGAD[$(ကြိမ်နှုန်း)]_ ဥပမာ: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. |
| လုပ်ဆောင်ချက် | Inquiry adjust the value for wireless gain setting using ATSD cmd |
| တုံ့ပြန်ချက် | ဥပမာ: ATGAD700000_ freq:700000,adjust:2.50 OK ATGAD_ freq:700000 750000 အိုကေ |
| မှတ်ချက်များ | Inquiry command. |
Serial Port Utility software download
https://www.alithon.com/downloads
အမြဲမေးလေ့ရှိသောမေးခွန်းများ
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 အ 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 (အကျိုး) 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 (Bitrate) I have to change only B (bandwidth ကို)? 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.
ပုံသေ, 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.
COFDM Modulator Demodulator Module Encoder Decoder HDMI CVBS AV ထည့်သွင်းမှု AES 256 FHD RF ထုတ်လွှင့်ခြင်း။
COFDM Modulator Demodulator Module Encoder Decoder HDMI CVBS AV ထည့်သွင်းမှု AES 256 FHD RF ထုတ်လွှင့်ခြင်း။
မာတိကာ
Another side view
COFDM Encoder module, CVBS / HDMI input ကို, IP output
For More details about the COFDM encoder board, please visit here
COFDM Encoder module Advantage:
- အလွန်နည်းသော latency H.265/H.264 အော်ဒီယိုနှင့် ဗီဒီယို ကုဒ်ဝှက်ခြင်း အမြင့်ဆုံးပံ့ပိုးမှု 1080P@60 အချိန်နှင့်တစ်ပြေးညီ ဗီဒီယိုရိုက်ကူးခြင်းနှင့် ကုဒ်နံပါတ်
- HDMI သို့မဟုတ် AV အသံနှင့် ဗီဒီယို ထည့်သွင်းမှု, ကုဒ်ပြောင်းပြီးနောက်, Ethernet အပေါက် အထွက် သို့မဟုတ် ကြိုးမဲ့ မော်ဂျူးသို့ အထွက်, ဗီဒီယိုကုဒ်ဖြင့် ဘစ်နှုန်းကို ဒိုင်းနမစ်ဖြင့် စီစဉ်သတ်မှတ်နိုင်သည်။
- အသံ input ကိုနဲ့ audio ဒီကုဒ်ဒါ output ကိုထောကျပံ့
- ဗီဒီယိုနှစ်ခုကို ပံ့ပိုးပါ။ (HDMI + AV) တပြိုင်နက်တည်း ထည့်သွင်းကုဒ်ပြောင်းခြင်း။ (option ကို, မူရင်းမှာ HDMI သို့မဟုတ် AV ကုဒ်နံပါတ်ဖြစ်သည်။, input source နှစ်ခုမှ တစ်ခုကို ရွေးပါ။). )
- ဝဘ် UI သို့မဟုတ် အမှတ်စဉ် ဆိပ်ကမ်း UART AT အမိန့် configuration စီမံခန့်ခွဲမှုအတွက်
COFDM transmitter module
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
အမေးအဖြေများ
- Question1: Could you please tell me part number of this component, we try to find localy and check. အဖွေ 1: It is a inductance named LOH32PN2R2NNC.
- 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.
သေချာတာပေါ့
ကျေးဇူးပြု၍ အောက်ပါလင့်ခ်ကို ကြည့်ရှုပါ။.
Encoder Modulator Decoder Demodulator Module Parameter Configuration Instructions COFDM AT Command
3. မေးခွန်း, If our camera quality is good enough for both 4 MHz နှင့် 8 MHz bandwidth ကို. ဒီကိစ္စမှာ, Should the customer choose 4 MHz သို့မဟုတ် 8 MHz?
အဖွေ: 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. မေးခွန်း: Which is better for this tx+rx set from a receive sensitivity view?
အဖွေ: 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
သေချာတာပေါ့
ကျေးဇူးပြု၍ အောက်ပါလင့်ခ်ကို ကြည့်ရှုပါ။
Single channel receiving sensitivity:
-97+/-1dbm at QPSK 8MHz,
-98+/-1dbm at QPSK 6MHZ,
Sensitivity increased by 3dbm when receiving with dual antennas
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）
အောက်ပါလင့်ခ်တွင် ဒေါင်းလုဒ်လုပ်ပါ။.
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
သေချာတာပေါ့, ကျေးဇူးပြုပြီးအောက်ကပုံကိုကြည့်ပါ.
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
"ပြန်လည်သုံးသပ်ဖို့ပထမဦးဆုံးဖြစ်COFDM Modulator Demodulator Module Encoder Decoder HDMI CVBS AV ထည့်သွင်းမှု AES 256 FHD RF ထုတ်လွှင့်ခြင်း။”
Related ထုတ်ကုန်
ဗီဒီယို transmitter
ဗီဒီယို transmitter
UAF အတွက် COFDM ဒီဂျစ်တယ်ဗွီဒီယိုပို့ဆောင်ရေးကြိုးမဲ့ HD ဗီဒီယိုထုတ်လွှင့်စက်
reviews
အဘယ်သူမျှမပြန်လည်သုံးသပ်ခြင်းသေးရှိပါတယ်.