מאפנן מקודד מפענח מפענח מודול פרמטר הוראות תצורת COFDM AT Command
Download the Encoder Modulator Decoder Demodulator Module Parameter Configuration Instructions below if you need a PDF file.
Update Record:
גִרְסָה | תַאֲרִיך | תאור |
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 (רמת 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 טֶקסט, לדוגמה:
גommand 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
פוּרמָט | ATDR_ |
פָּרָמֶטֶר | לא |
להשתמש | 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 |
הֶעָרָה | query command |
Set Device Command
פוּרמָט | ATSD $(mimo), $(gi), $(חישוב קצב השידור של מערכת שידור אלחוטית COFDM), $ (קבוצת כוכבים), $(תדירות(KHz)), $(bw(KHz)), $(tx1_gain), $(tx2_gain)_ דוגמא: ATSD0,1,0,0,800000,8000,86.0,86.0_ |
פָּרָמֶטֶר | One Antenna/Dual antenna mimo: 0 mimo disable; 1 mimo enable Guard Interval GI: 0 1/32; 1 1/16; 2 1/8; 3 1/4 Convolution Code Rate: 0 1/2; 1 2 /3; 2 3/4; 3 5/6; 4 7/8; קבוצת כוכבים: 0 QPSK; 1 QAM16; 2 QAM64; RCB Carrier Center Frequency(kHz) 200000~2700000(200MHz~2.7GHz, 1צעד KHz) RC900 Carrier center Frequency(kHz) 750000~930000(750930MHz MHz ~, 1צעד KHz) RCB Channel bandwidth bw(KHz) 2000~8000(2MHz~8MHz, 1צעד KHz) RCB Channel bandwidth bw(KHz) 2000~8000 (2MHz~8MHz, 1צעד KHz) Transmitting antenna 1 gain tx1_gain 0.0~89.75dB, 0.25dB stepping Transmitting antenna 2 gain tx2_gain 0.0~89.75dB, 0.25dB stepping |
ערך החזרה | כמו:ATSD0,1,0,0,800000,8000,86.0,86.0_ SISO,GI: 1/16, CR:1/2, MOD: QPSK, תדירות:800000KHz,bw:8000KHz,tx1_gain:86.000000 tx2_gain:86.000000 בסדר |
הערה | Set command, save when power off. Different Bandwidths, מרווחי המשמר, Convolution code rates, Data rate calculation formulas corresponding to constellations Air interface rate Rate(חישוב קצב השידור של מערכת שידור אלחוטית COFDM) חישוב קצב השידור של מערכת שידור אלחוטית COFDM (רוחב פס(MHz) * 8.0/7.0) / (1+GI) * 1512/2048*חישוב קצב השידור של מערכת שידור אלחוטית COFDM(חישוב קצב השידור של מערכת שידור אלחוטית COFDM) * חישוב קצב השידור של מערכת שידור אלחוטית COFDM * 188/204. Taking 8MHz bandwidth as an example, different guard intervals, convolution code rates, data rates corresponding to constellations and required receiving signal-to-noise ratios |
Set Gain Command
פוּרמָט | ATSG$( tx1_gain),$( tx1_gain)_ דוגמא: ATSG85.0,85.0_ |
פָּרָמֶטֶר | tx1_gain: משדר 1 לְהַשִׂיג tx2_gain: משדר 2 לְהַשִׂיג |
להשתמש | To dynamically adjust the output power. If the signal SNR/RSSI of the receiver is high, the output power can be reduced through the remote control link. When the SNR/RSSI of the end signal is low, increase the output power (מַשׁדֵר) |
ערך החזרה, | דוגמא: ATSG85.0,85.0_set gain 85.000000 85.000000 בסדר |
הֶעָרָה | פקודת הגדרה, power off will not save. |
Set Modulation Mode commanד
פוּרמָט | ATSM$(gi), $(חישוב קצב השידור של מערכת שידור אלחוטית COFDM), $(קבוצת כוכבים)_ דוגמא: ATSM1,1,2_ |
פָּרָמֶטֶר | Gard interval GI: 0 1/32; 1 1/16; 2 1/8; 3 1 /4; Convolution code rate: 0 1/2; 1 2/3; 2 3/4; 3 5/6; 4 7/8; קבוצת כוכבים: 0 QPSK; 1 QAM16; 2 QAM64 |
להשתמש | Dynamically adjust the air interface rate, the air interface rate can be increased when the distance is short, and the air interface rate can be reduced when the distance is long (מַשׁדֵר) |
ערך החזרה | דוגמא:ATSM1,1,2_GI:1/16, CR:2/3, MOD: QAM64, בסדר |
הֶעָרָה | פקודת הגדרה, power off will not save. |
Get Device Status Command
פוּרמָט | ATGD_ |
פָּרָמֶטֶר | לא |
להשתמש | query the current number of transmit antennas, משמר מרווח, convolution code rate, number of constellations, transmit frequency, רוחב פס, gain parameters (מַשׁדֵר) |
ערך החזרה | דוגמא: ATGD_ SISO, GI:1 /16, CR: 1/2, MOD: QPSK, תדירות: 800000KHz, bw: 8000KHz, tx1_gain: 86.000000 tx2_gain: 86.000000 בסדר |
הֶעָרָה | query command |
Set Encoder Command
פוּרמָט | ATSE$(llc),$(rt),$(bitrate) ,$(gop),$(אודיו)_ דוגמא: ATSE0,0,0.0,0,0_ |
פָּרָמֶטֶר | 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. קצב סיביות: 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 |
להשתמש | Used to set encoding parameters (משדר) |
ערך החזרה | דוגמא:ATSE0, 0,0.0,0,0_ מצב:0,RT:0,bitrate: 0.0Mbps,gop:0,אודיו:0,בסדר |
הֶעָרָה | פקודת הגדרה, save when power is off. |
Get Encoder Command
פוּרמָט | ATGE_ |
פָּרָמֶטֶר | לא |
להשתמש | querying encoding parameters (sending end) |
ערך החזרה | דוגמא:ATGE_MODE:0, RT:0,bitrate:4.0Mbps,gop:10,אודיו:0,aes:0, בסדר |
הֶעָרָה | Query command AES means the current encryption status: 0 disable; 1 enable |
Get Input Command
פוּרמָט | ATGI_ |
פָּרָמֶטֶר | לא |
להשתמש | query the current camera input parameters (מַשׁדֵר) |
ערך החזרה | דוגמא:ATGI_input_size: 1080p, input_rate: 60fps, sensor_type: hdmi,בסדר |
הֶעָרָה | query command |
Set Input Command
פוּרמָט | ATSI$(input_size),$(input_rate)_ דוגמא: ATSI1080,25_ |
פָּרָמֶטֶר | 1. Input resolution input_size: 0 תן למערכת לזהות; >0 specify input size 2. Input frame rate input_rate: 0 תן למערכת לזהות; > 0 specify input fps |
להשתמש | To specify the input resolution and frame rate to meet some special signal sources, or some special application needs (מַשׁדֵר) |
ערך החזרה | דוגמא: ATSI1080,25_ Input_size:1080p,input_rate: 25fps, בסדר |
הערות | 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
פוּרמָט | ATSO$(output_size),$(output_rate)_ דוגמא: ATSO720,30_ |
פָּרָמֶטֶר | 1. משדר: encoding output resolution output_size: 0 equal to input_size; >0 specify output size 2. מַקְלֵט: HDMI output resolution (720, 1080) 3. משדר: encoding output frame rate output_rate: 0 equal to input_rate; >0 specify output_rate (fps) 4. מַקְלֵט: HDMI output frame rate 720p supports frame rate (50, 60); 1080p supports frame rate (24, 25, 30, 50, 60) |
להשתמש | 1. משדר: Used to specify the encoding output resolution and frame rate to meet the requirements of certain applications for zooming and frame reduction 2. מַקְלֵט: used to configure the resolution and frame rate of HDMI output |
ערך החזרה | דוגמא: ATSO720,30_ output_size: 720p, output_rate: 30fps, בסדר |
הערות | 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. |
הגדר פקודת מקורות קלט (להחליף HDMI / קלט CVBS)
פוּרמָט | ATSU$(vin),$(עין)_ דוגמא: ATSU0,1_ |
פָּרָמֶטֶר | 1. בחירת קלט וידאו VIN: 0 תן למערכת לזהות; 1 לאלץ קלט CVBS; 2 לאלץ קלט hdmi/SDI 2. בחירת קלט שמע AIN: 0 תן למערכת לזהות; 1 לכפות קלט אנלוגי |
להשתמש | משמש כדי לעמוד בדרישות יישום ספציפיות (דוגמא: וידאו קלט HDMI/SDI, אודיו כניסת MIC) |
ערך החזרה | דוגמא: ATSU0,1_ ATSU0,1 בסדר |
הֶעָרָה | פקודת הגדרה, חיסכון בכיבוי. |
Get User Command
פוּרמָט | ATGU _ דוגמא: ATGU_ |
פָּרָמֶטֶר | לא |
להשתמש | To query user-specific configuration |
ערך החזרה | דוגמא: ATGU_ ATGU0,1 OK |
הֶעָרָה | query command return parameter description please refer to the ATSU command |
Set Receiver Command
פוּרמָט | atsr $(תדירות), $(bw ), $(llc), $(cvbs)_ דוגמא: ATSR320000,6000,0,0_ |
פָּרָמֶטֶר | 1. DR2C carrier frequency freq(KHz) 200000~860000(200860MHz MHz ~, 1צעד KHz) 2. DR900 carrier center frequency freq(KHz) 200000~1600000(200MHz~1.6GHz, 1צעד KHz) 3. DR2C channel bandwidth bw(KHz) 2000~8000(2MHz~8MHz, 1צעד KHz) 4. DR900 channel bandwidth bw(KHz) 3200~8000(3.2MHz~8MHz, 1צעד KHz) 5. Enhanced data reliability option llc: 0 disable; 1 enable (it is required that the transmitter should also enable this option at the same time, and use it in pairs. Since more redundant data is added to enhance reliability, the video bit rate of the transmitter should be set to when this option is turned off half of) 6. AV output system cvbs: 0 pal; 1 ntsc |
להשתמש | To set the receiver parameter |
ערך החזרה | example: ATSR320000,6000,0,0_ ATSR320000,6000,0,0 OK |
הֶעָרָה | פקודת הגדרה, save when power is off. |
Get Receiver Command
פוּרמָט | ATGR_ |
פָּרָמֶטֶר | לא |
ATGR_ | the receiving end parameter |
ערך החזרה | דוגמא: ATGR_ ATGR320000,6000,0,aes:0,cvbs:0 בסדר |
הֶעָרָה | 1. Query command 2. Aes parameter indicates the current encryption status: 0 disable;1 enable 3. CVBS parameter Indicates the current AV output standard: 0 pal;1 ntsc |
Get Bit Error Rate Command
פוּרמָט | ATGB_ |
פָּרָמֶטֶר | לא |
להשתמש | querying the bit error rate and signal strength of the dual antennas at the receiving end |
ערך החזרה | דוגמא: ATGB_ ATGB ber1:0.00% ber2:0.00% RSSI1 :54 RSSI2:53 Lock1:1 Lock2:1 בסדר |
הערות | 1. Query commands 2. Ber1 and ber2 respectively indicate the bit error rate of each antenna, ranging from 0.0% ל 100.0% 3. RSSI1 and RSSI2 respectively indicate the signal strength of each antenna, ranging from 0 ל 100 4. Lock1 and Lock2 respectively indicate the signal locking status of each antenna (1 Represents signal lock) |
Set Password Command
פוּרמָט | ATSP$(סיסמה), $(סיסמה)_ דוגמא: ATSP123456, 123456_ |
פָּרָמֶטֶר | AES key password: 6-digit password (ASCII) AES key password: 6-digit password (ASCII) (repeat it for confirmation) |
להשתמש | Used to set the AES key of the transceiver (משדר ומקלט) |
ערך החזרה | דוגמא: ATSP123456_ ATSP123456 OK |
הֶעָרָה | 1. When the password is all 0, AES encryption is turned off. 2. Set the command and save it after powering it off. |
Set Data Transfer Command
פוּרמָט | ATST$(קצב שידור), $( parity)_ דוגמא: ATST115200,0_ |
פָּרָמֶטֶר | 1. Baud rate baud rate: 1200、2400、4800、9600、19200、38400、57600、115200 2. Check Code: 0: אף אחד; 1: Odd; 2: Even |
להשתמש | Used to set the baud rate and parity bit of the serial port for data transparent transmission |
ערך החזרה | דוגמא: ATST115200,0_ ATST115200,0 OK |
הערות | Set command |
Get Data Transfer Command
פוּרמָט | ATGT_ |
פָּרָמֶטֶר | לא |
להשתמש | Used to query the baud rate and check code |
ערך החזרה | דוגמא: ATGT_ ATGT115200,0 OK |
הערות | Query command |
Set IP Address Command
פוּרמָט | ATSIP$(ip), $(ip)_ דוגמא: ATSIP192.168.1.215,192.168.1.215_ |
פרמטרים | Local IP address Local IP address (repeat to confirm) |
להשתמש | Used to set the receiver IP address |
ערך החזרה | דוגמא: ATSIP_192.168.1 .215,192.168.1.215_ ATSIP192.168.1.215 OK |
הערות | 1. After setting the IP address, the receiving end needs to be restarted to take effect. 2. Set the command and save it after powering it off. |
Get IP Address Command
פוּרמָט | ATGIP_ דוגמא: ATGIP_ |
פָּרָמֶטֶר | לא |
להשתמש | to query the current IP address of the receiving end |
Return value | דוגמא: ATGIP_ ATGIP192.168.0.215 OK |
הֶעָרָה | query command |
OSD Overlay Protocol
פוּרמָט | ATOSD$(idx), $(איקס), $(y), $(str)_ דוגמא:ATOSD0,40,20,height: 100m_ |
פָּרָמֶטֶר | 1. IDX index: 0~7 (supports OSD overlay for 8 areas) 2. X-coordinate: 0~1919 3. Y coordinate: 0~1079 4. str: the string to be displayed at the corresponding coordinates (the space symbol is used to clear the display) |
להשתמש | on the video screen.OSD information |
Return value | לא |
הערות | 1. The user specifies the x and y coordinates of the OSD display according to the maximum 1920×1080 פיקסלים, and the system will correct the coordinates according to the actual display situation. 2. The ‘_’ character cannot be contained in the str parameter |
Set Gain To Adjust
פוּרמָט | ATSAD$(תדירות),$(adjust) _ דוגמא:ATSAD700000,2.5_ |
פָּרָמֶטֶר | wireless central working frequency: Freq(KHz) 200000~2700000(200MHz~2.7GHz, step: 1KHz) Adjust the value(dB): ATSD cmd will subtract this value to set the wireless gain |
פוּנקצִיָה | Specify and adjust the value for the wireless gain setting using by ATSD cmd |
מָשׁוֹב | דוגמא: ATSAD700000,2.5_ freq:700000,adjust:2.50 בסדר |
הערות | Setting command is still valid when stopping power or resetting. |
Get Gain To Adjust
פוּרמָט | ATGAD[$(תדירות)]_ דוגמא:ATGAD700000_ |
פָּרָמֶטֶר | 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. |
פוּנקצִיָה | Inquiry adjust the value for wireless gain setting using ATSD cmd |
מָשׁוֹב | דוגמא: ATGAD700000_ freq:700000,adjust:2.50 OK ATGAD_ freq:700000 750000 בסדר |
הערות | Inquiry command. |
Serial Port Utility software download
https://www.alithon.com/downloads
שאלות נפוצות
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 ה 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 (לְהַשִׂיג) 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 (קצב סיביות) I have to change only B (רוחב פס)? 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.
כברירת מחדל, 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 Input AES 256 הזרמת FHD RF
ביקורות
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