COFDM Relay Repeater-modul for drone UAV trådløs videosender og mottaker Vcan1870
COFDM Relay Repeater
COFDM Relay Repeater-modul for drone UAV trådløs videosender og mottaker Vcan1870
Innholdsfortegnelse
Introduksjon
The module is a relay module, not a completed item. Customers need to add a power amplifier, filters, and receiving and transmitting antennas for it to work effectively. These need to be customized according to the two working frequencies selected by the customer.
To prevent interference, the drone employs a single frequency (f.eks. 400Mhz) for communication with the relay, and a different frequency (f.eks. 700Mhz) for communication between the relay module with the receiver. The separation between the two should be as large as possible.
Trekk
- Wireless Video COFDM Video Data demodulation and re-modulation
- Stable signal transfer in NLOS and high-speed moving (less than 600km/hour)
- Adjustable working frequency, båndbredde, overføringskraft, etc (Special Parameter Configure Tool or UART STM32 LoRA )
- Lowest latency 200-300 millisekunder
- Widely frequency range 200Mhz-3000Mhz
- Brukerstøtte Video og lyd
- båndbredde 1Mhz-8Mhz valgfri
- Video signal repeater for long-distance
Introduksjon
spesifikasjon:
IO
| RF inngangs | Two SMA females (to receive the signal) |
| RF-utgang | SconB eller SconC (to send out the signal again) |
| control UART | 4PIN PH1,25mm-kontakt |
| Strøm inn | 2PIN PH2.54mm phenix Connector |
| TF-card | For firmware update |
| Power led | red LED, constant light when the device is normally powered |
| Link led | green led, blinks on transmitting the received data |
Demodulation and Modulation
| Modulation Formats | COFDM(DVB-T) |
| Carriers | 2K |
| båndbredde | Configurable from 1MHz to 8MHz, step by 1KHz |
| FEC | 1/2, 2/3, 3/4, 5/6, 7/8 |
| Guard intervall | 1/32, 1/16, 1/8, 1/4 |
| Constellation | QPSK, 16QAM, 64QAM |
| Bitrates | 0.5Mbps to 31.67Mbps |
RF Received
| frekvensbånd | 160MHz ~ 860MHz (need an extra down converter block for 860-2300Mhz) |
| Tuning Step size | 1KHz |
| Følsomhet | -97±1dBm(BW=8MHz, QPSK, CR=2/3, GI=1/16) for one channel and add 3dBm for two-channel |
RF Transmitted
| frekvensbånd | 200MHz~2300MHz(other bands can be supported with special manufacturing) |
| Tuning Step size | 1KHz |
| Power out | Configurable, maximum -5dBm(subject to frequency) |
Monitoring and control
This COFDM relay repeater module can complete setup with our Parameter Configure Tool or STM32+LoRA (or other devices) via control uart. With our parameter configure too, the following parameters can be set:
– RX Received frequency (F1) and bandwidth (B1)
– TX Transmitted frequency (F2), båndbredde (B2), FEC, vakt intervall, constellation, and transmission power
Temperaturspenn
Video og lyd: 0° to +70°C Ambient
Oppbevaring: Video og lyd
Power requirements
Inndataområde: 7~24VDC
Strømforbruk: <250mA@12V
Fysiske egenskaper
dimensjoner: 73x51x15mm
Bruttovekt: 32.4 gram
UART AT commands
The AT commands mainly used in the COFDM Wireless Relay Repeater are ATDR, ATSD, ATGD, ATSR, ATGR, and ATGB. For the introduction of specific commands, see the document.
Vanlige spørsmål
- Our COFDM Video Transceiver relay repeater supports 170-860Mhz. The COFDM transmitter also supports 2300Mhz, but the COFDM receiver only supports up to 860Mhz, 861-930Mhz receiver our COFDM-221 supports, over 930Mhz-2300Mhz needs to plus the frequency downconverter block to support.
- Our COFDM relay repeater module supports all the COFDM transmitters and receivers, the transmission distance depends on your external power amplifier and filter support.
The below model is good for a two-way TDD bidirectional link of the Wireless relay transmitter and receiver or wireless transmitter and receiver relay repeater.
