HD Portable COFDM Mobile Video Ikuku Sistemu Ntuziaka ndị ọrụ
COFDM Mobile Video Wireless Transmission users manual for COFDM-908T and COFDM-912T
Users Manual for COFDM Mobile Video Wireless Transmission
This is a manual for COFDM-912T and COFDM-908T. If the HD input is mentioned in the text, it refers to the COFDM-908T model. If the SD input is mentioned in the text, it refers to the COFDM-912T model. Please Pay attention to the distinction.
Tebulu ọdịnaya
1. atụmatụ
- ukwuu ike, modular imewe
- Nweta teknụzụ modulation COFDM, H.264 teknụzụ nzuzo nzuzo
- Can transmit one 1080P HDMI signal and one unidirectional data up to 230400Kbps
- Low latency, the minimum end-to-end latency is 350ms
- All-gburugburu nkwurịta okwu, bụghị egwu nke-ewu mgbidi
- Mkparịta ụka njem na njem dị elu,
- Transmitter okpomọkụ sink ụdị aluminum ikpe, shockproof na mmetụta na-eguzogide
- Non-akara-of-anya (NLOS) nnyefe ekwentị, the transmission distance of 2W power is not less than 30 kilometers under the condition of no interference, the transmission distance of 5W power is not less than 50 kilomita, and the transmission distance of 10W power is not less than 80 kilomita
- Ọsọ kachasị na-agagharị nwere ike iru 600Km / awa (tụrụ)
- Synchronous n'ikuku nke ọdịyo na video n'ókè, elu-definition HDMI1080P multi-format nhọrọ, ọkọlọtọ-definition mmepụta DVD oyiyi mma
- Onye nata nwere ike ịghọta ndekọ vidiyo na ọrụ nchekwa
- 128-bit AES izo ya ezo na decryption
- Can provide full customization
2. ngwa
This product is mainly used in technical reconnaissance and evidence collection of public security and safety inspection departments, real-time picture transmission of drones and unmanned ships, radio and television broadcasting, broadcasting live broadcasting: Broadcasting ubi, mgbasa ozi egwuregwu, na-elekọta mmadụ ozi ọma、efe n'elu ndụ、studio, mountaineering expeditions and more. O adabara maka ezigbo oge nnyefe nke onyonyo dị elu na gburugburu ebe dị mgbagwoju anya dịka ime obodo, oké osimiri, na ugwu.
3: Parameter Indicators
1: transmitter (only standardized pictures, except for customization)
Product parameters:
| Mgbanwe ụda olu | COFDM |
| operating voltaji | DC11V~DC17V |
| arụ ọrụ ugbu a | 1W：≤1.3A DC12V，5W：≤2.5A DC12V，10W：≤5.2A DC12V， |
| njikwa njikwa | Standard RS232 interface, 8 data ibe n'ibe, 1 nkwụsị bit, ọbụna parity, baud ọnụego: 19200 |
| uzo data interface | Otu ụzọ transperent serial ọdụ ụgbọ mmiri nnyefe, 8 data ibe n'ibe, 1 nkwụsị bit, akwado iberibe parity, ọbụna parity, ikuku nhatanha, baud ọnụego: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 、230400 |
| na izo ya ezo | Kwado nzuzo 128-bit |
| mgbanwe olu | QPSK（4QAM）、16QAM、64QAM |
| na-atụ njehie mgbazi | 1/2 2/3 3/4 5/6 7/8 |
| nche nkeji | 1/32 1/16 1/8 1/4 |
| Number nke na-ebu | 2k |
| bandwidth ugboro ugboro | 2/3/4/5/6/7/8M mgbanwe |
| mbufe mmiri | 2000kbs ~ 20000kbs mgbanwe |
| ebunye ike | 1W/5W/10W |
| nnyefe ugboro | Any frequency can be customized, the frequency is continuously adjustable, the adjustable range is ±20MHz, and the step is 1MHz |
| Power flatness | Less than 0.2dB in 10MHz band |
| Jirinụ ruru | The shoulder-to-shoulder ratio is better than -28dB at full power output |
| second harmonic | -45dB |
| MORE | 32dB |
| video ntinye | 720×480 60m(NTSC), 720×576 50m(PAL), 720 50P, 720 60P, 1080 50m, 1080 60m, 1080 24P, 1080 25P, 1080 30P, 1080 50P, ụdịdị dị iche iche na-agbanwe agbanwe. |
| HD interface | HDMI |
| video ngbanwe usoro | H.264 |
| Protection ọkọlọtọ | All-aluminum okpomọkụ ahụ ụdị Chassis, mgbochi-corrosion, ujo-àmà imewe |
| n'ozuzu size | 102*80*30mm（1w)/102*90*30mm（5W）/188*47*34mm（10W）/228*55*40mm（20W） |
| Total arọ | ≤0.20KG （1W） / ≤0.27KG （5W） ≤1.5KG （10W） ≤2KG （20W） |
2: erite
Product parameters:
| Portable multi-bandwidth HD receiver parameters | |
| Anata ugboro ole iche | 170-860MHz VHF&UHF |
| bandwidth ugboro ugboro | 2/3/4/5/6/7/8MHz, nhọrọ |
| Ntinye ntinye RF | -94dBm ~ -15dBm (na 8M bandwit)/-98dBm ~ -15dBm (at 2M bandwidth) |
| RF input impedance | 50 ohms |
| RF input njikọ | N isi |
| Demodulation usoro | COFDM |
| Constellation way | QPSK, 16QAM, 64QAM (nhọrọ) |
| na-atụ njehie mgbazi | 1/2,2/3,3/4,5/6,7/8 (nhọrọ) |
| Number nke na-ebu | 2k， |
| nche nkeji | 1/32,1/16,1/8,1/4 (nhọrọ) |
| ntinye vidiyo | MPEG-2MP@ML/H.264 |
| screen aspect ratio | 4:3 16:9 |
| Video output image | 720*576@8MHz 1080P@60P、50P、50m、30P、 |
| ụdị mmepụta ọdịyo | Stereo unbalanced 300/ 200mv |
| ọdịyo mmepụta | 2ọdịyo mmepụta + 2video mmepụta |
| operating voltaji | AC220V/DC12V ＜0.4A |
| operating okpomọkụ | -20℃ ～ + 50 ℃ |
| physical dimension | 136*115*35mm non-standard all-aluminum shell |
| akụrụngwa ibu | 0.35n'arọ |
4: Instructions for use
1: transmitter
- Functional area description
“ndanda”: Transmitting antenna interface, please connect the antenna before powering on
“HDMI”: High-definition video input interface, input below 1080/50P
“Ctrl”: Transmitter tuner connection interface
“DC 12V”: DC12V power input port. “+” is the positive pole of the power supply, “-” is the negative pole of the power supply
“DC” bụ: ọkụ egosi ike, when the light is always on, it means that the power input of the transmitting module is normal
“TS”: Video input detection indicator light, this light is always on to indicate video input and normal encoding
- Parameter Configuration Description
Connect the transmitter parameter adjuster, pịa “MENU/OK” key to enter the menu, the encryption key and data serial port parameters are displayed first, press the left or right key to move the cursor, and the up and down keys to adjust the parameters
After the parameter setting is completed, pịa “MENU/OK” to enter the next menu, and the interface is displayed as shown in the figure
Press the left or right key to move the cursor, press the up or down key to adjust the required parameters, the interface prompts as shown in the figure
After all parameter settings are completed, pịa “MENU/OK” key to confirm, and the display will be as shown in the figure.
After the setting is completed, the parameters are written successfully, and the display is as shown in the figure
- General Troubleshooting
a: The light is off after the power is turned on: Check whether the power input meets the standard
b: “TS” indicator light is off: Check the video input connection cable, check whether the video input format conforms, and check whether the camera is interfered with (you can judge by holding the antenna with your hand).
C: The temperature of the transmitter is very low: check whether the current is normal (the deviation can be ±0.2A within the standard current).
d: Three lights are always on, and one of them is super bright: it means that the transmitter has failed the detection, and you can try to power off and restart (uncommon)
2: erite
- Functional area description
“RF in1” “RF in2”: receiving antenna interface, it is recommended to connect the antenna and then turn on the power switch, because the static electricity of the human body may cause the receiver to crash.
“HDMI”: Video mmepụta interface, the output video format can be adjusted through the “HDMI” menu on the control panel.
“DC 12V”: Power input interface, please strictly follow the power supply voltage requirements, and overvoltage input is strictly prohibited
“ON / Gbanyụọ”: power switch.
“USB”: video storage interface, when the U disk is inserted, pịa “EXIT” button to start the video recording, after the recording is successful, the video display will display the video recording time, and the stored file name is “TS”.
- LCD parameter description
a：CH01 UNLOCKED（LCKED）
“CH01” means the channel number of the receiver, “UNLOCKED” means the received signal is unlocked, na “LCKED” means the signal is locked. “CH00” of the receiver is the initial writing channel, and the default channel corresponding to the normal operation of the transmitter is “CH001”
b： FREQ：602.0MHz
“602.0MHz” is the receiving frequency of the receiver, this frequency must be consistent with the frequency set by the transmitter, otherwise the receiver will not search or receive the signal from the transmitter
c： Bw:6.0MHz
“Bw” bandwit, as shown in the figure, “Bw: MHz” is understood as the RF bandwidth is 6MHz, this bandwidth must be consistent with the bandwidth set by the transmitter, otherwise the receiver will search for or cannot receive the signal from the transmitter
d： FEC:1/2
“FEC: 1/2” is the channel error correction, this parameter synchronizes the parameters set by the transmitter, and the receiver cannot be modified
e： Gi:1/32
“Gi:1/32” is the channel guard interval, this parameter is set by the transmitter synchronously, and the receiver cannot be modified
f:MAP: QPSK
“MAP: QPSK” is the modulation mapping, this parameter number is set by the transmitter synchronously, and the receiver cannot be modified
g： SNR:0.0dB(SNR:15.0dB)
“SNR: 15.0dB” is the signal quality (ya bu, the signal-to-noise ratio, the larger the value, the better). Mgbe ole “0.0dB” is displayed, the signal quality is 0, and the receiver will not be able to lock
“(SNR:15.0dB)” means the receiving signal-to-noise ratio is greater than 15dB. In the “QPSK” modulation mapping state, as long as the signal-to-noise ratio is greater than 6dB, the receiver can lock
h: PW：-72.1dBm（PW:-72.1)
PW is the received signal strength, (reference level value), the farther the transceiver end is relative to the distance, the weaker the signal strength is, and the larger the displayed value is, when the transmitter is not turned on, if the signal strength of the receiver is greater than -90dBm (such as -79.7dBm), it can be considered as adjacent frequency interference
- Parameter Configuration Description
Power on the receiver, and press the “MENU/OK” button to enter the menu, the first display is the menu of adjustable parameters, if you search for a specified frequency, directly press the “MENU/OK” button to enter the menu; if you want to remove the channel, press Press down to select “ListanbulChannel”, wee pịa “MENU/OK” to enter the menu operation; if you need to change the video output format, move the cursor to the “HDMI Mode” menu, pịa “MENU/OK” to enter, and select the video to be output After formatting, pịa “MENU/OK” key to confirm.
The frequency search method is as follows. After entering the frequency setting menu, the interface is displayed as shown in the figure. Press the left or right key to move the cursor, press the up or down key to adjust the frequency, RF bandwit, and secret key that match the transmitter, and press the “MENU /OK” key to search. Note that the transmitter must be turned on at this time, ma, the receiver will not be able to lock because it cannot find the signal.
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When the search is completed, pịa “MENU/OK” iji gosi, and the channel is saved in the register of the assistant board, as shown in the figure. To save the channel to the receiver register, pịa “MENU/OK” key and the right key at the same time.
After the receiver parameter setting is completed, the functions of the panel keys are as follows
"↑”“↓“: each individually selectable receiver channel “CH**”
"←”“→“: You can choose to view the hidden parameters of the receiver
“EXIT”: start and stop recording
- Video function
Insert the storage device into the “USB” interface of the receiver, pịa “EXIT” button to start recording, and a blue recording time box will appear on the upper left corner of the video display as shown below
- General Troubleshooting
a: The value after the receiver displays “-” is very low (Tx is not turned on): It means that the current channel has serious electromagnetic interference, and the normal value is -90- -100.
b: Cannot record video: check the U disk or replace the U disk.
C: No signal received: Check whether the channel frequency is consistent with the transmitter.
d: No video output: Check the connection line, power off, and restart to check whether there is a boot interface.
