wireless video transmitter for the helmet camera
COFDM Wireless Video HDMI Transmitter TX kis HDMI HD 1080P CVBS H264 Encoder COFDM-907T
COFDM Wireless yees duab HDMI Transmitter
COFDM Wireless Video HDMI Transmitter TX kis HDMI HD 1080P CVBS H264 Encoder COFDM-907T
COFDM-907T transmitter yog ib cov ntaub ntawv high-speed transmission ntaus rau cov yees duab zoo thiab audio transmission daim ntawv thov. Ntxiv rau qhov zoo yees duab zoo thiab audio yuav tsum tau ntawm lub koob yees duab, tus kwj dej encoding kwj dej, and channel rate requirements are very high. Nws yuav transmit H.264 high codec zoo, a receiver image resolution up to 1920X1080P/60.
Cov Txheej Txheem
Specification
| Encoding | H.264,MPEG-2 |
| Zauv Bands | 170Mhz.930Mhz (kev hloov kom haum rau thaum uas thov) |
| Modulation Format | COFDM / DVB-T |
| Tso zis Amplifier | 1W 2W 5W 10W (Preset hauv lub Hoobkas ua ntej tus me nyuam |
| Channel Qhab Width | 6MHz 7MHz 8MHz |
| Subcode carrier modulation | QPSK, 16Qam, 64Qam |
| Yuam Kev Code Tus Nqi | 1/2;2/3;3/4;5/6;7/8 |
| Neeg Zov Me Nyuam | 1/32，1/16，1/8，1/4 |
| Yees duab Code kwj dej | 2Mbps-22Mbps |
| Lawv latency | 300 millisecond |
| Kis tau tus kab mob no Daim Ntawv Thov Kev Pab |
Visual ntau yam Airborne siv maritime daim ntawv thov kev thov pab suburban Application |
| Compression Format | H.264/MPEG-2 |
| Hnub Input | UART (115200bit/s) |
| Yees duab-Input | HDMI, CVBS (yees duab-audio) |
| Audio Input | Nws tso suab, AL laug AR txoj cai |
| Duab txhais cov ntsiab lus | 1080P/I(1920*1080)compatible 720P/I,576P/I,480P/I,SD( ncej rate@ 25fram/S) |
| Yees duab-Input Interface | 4P 1.25 Ribbon cable interface, HDMI txheem interface |
| Input Voltage Range | 10V.35VDC |
| UA HAUJ LWM KUB | -20+65°C |
| cia | -40+70°C |
| Dimension | 93mm×56m×23m(L×H×H) |
| luj chav tsev | 80g (Nrog kiv cua) Xws li antenna 138g |
COJ thiab frequency
| COJ XIM | Ceeb toom | Zaus |
| 1 0 0 | 1st Green LED is always on, and tx is working; 2nd thiab 3rd xiav LED yog rho tawm hauj lwm | 503Mhz |
| 1 1 0 | 1st Green LED is always on, and tx is working; 2nd xiav LED yog rau thiab 3rd xiav LED yog rho tawm hauj lwm | 509Mhz |
| 1 0 1 | 1st Green LED is always on, and tx is working; 2nd xiav LED yog tawm thiab 3rd xiav LED yog rau | 515Mhz |
| 1 1 1 | 1st Green LED is always on, and tx is working; 2nd thiab 3rd xiav LED yog rau | 521Mhz |
TX Pin Define
(also note that you need this cable to have the UART TX RX function)
P1. Audio L
P2. Audio R
P3. Yees duab
P4. GND
P5. Vcc
P6. GND
P7. se
P8. XYAUM
Gallery
COFDM HDMI Receiver COFDM-907r
| Txheej Txheem | DVB-T/DVB-T2 COFDM standards module nrog ntau haiv neeg lus 2 kav hlau txais xov | ||||
| Modulation Format | COFDM / DVB-T | ||||
| Mov Voltage | 12-24VDC | ||||
| Ntau zaus | 170MHz~930MHz (kho kom haum, thiab customized 2.4-5.8G muaj nyob rau ntawm koj txoj kev thov) | ||||
| Channel Qhab Width | 6MHz / 7MHz / 8MHz | ||||
| Subcode carrier modulation | QPSK,16Qam,64Qam | ||||
| Neeg Zov Me Nyuam | 1/8, 1/4 | ||||
| Yuam Kev Code Tus Nqi | 1/2;2/3;3/4;5/6;7/8 | ||||
| Input Impedance | 50Ω Unbalanced | ||||
| Hwj huam | khiav:3W Max. (DC 12V hauv DC 12V hauv DC 12V hauv DC); Standby: 0.5W Max. (DC 12V hauv DC 12V hauv DC 12V hauv DC) | ||||
| Tej thaj chaw deb tswj Interface | UART / IR | ||||
| UA HAUJ LWM KUB | -20°C.+50°C | ||||
| Kub cia | -40°C.+65°C | ||||
| Audio Tso Zis | Nws tso suab | ||||
| Yees duab nam piv | 16: 9; 4:3 | ||||
| Nrhiav | Automatic Channel nrhiav, Nrhiav Kev Tshawb Nrhiav | ||||
| Yees duab tso zis Interface | CVBS, HDMI | ||||
| Infrared tswj | Txheem NEC tej thaj chaw deb infrared receiver | ||||
| Dimension | 112mm×67.5m×22m | ||||
| Taus | Ua ntej teeb liab txheej txheem rau mobile tej yam mob | ||||
FAQs
Almost 14 Watts consumption.
1W is enough for a 1km distance. But we will make 2W for you to ensure the best reception performance.
It also depends on your local environment, whether it is LOS or NLOS, please check our test video, there are many floors and buildings.
For changing different power amplifiers about 500 MW, 1 Watt, 2 Watt, los sis 10 watts. It is not just adjusting the setting in the software, You also need to change the Power amplifier hardware inside the transmitter. It can not operate and change at the normal end-user, and the cost and transmitter metal box size are different.
The default frequency setting is 503 Mhz, 509 Mhz, 521 Mhz, thiab 521 Mhz to choose, one button on the cabinet can change. If you really need a 1.3Ghz band only, you should choose another model (1.2G or 1.4G). Please tell us the details of your demand.
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