Mòdul repetidor de relé COFDM per a transmissor i receptor de vídeo sense fil UAV drone Vcan1870

COFDM Relay Repeater

Mòdul repetidor de relé COFDM per a transmissor i receptor de vídeo sense fil UAV drone Vcan1870

introducció

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 (per exemple. 400mhz) for communication with the relay, and a different frequency (per exemple. 700mhz) for communication between the relay module with the receiver. The separation between the two should be as large as possible.

característica

1. Wireless Video COFDM Video Data demodulation and re-modulation
2. Stable signal transfer in NLOS and high-speed moving (less than 600km/hour)
3. Freqüència de treball ajustable, ample de banda, potència de transmissió, etc. (Special Parameter Configure Tool or UART STM32 LoRA )
4. Lowest latency 200-300 mil·lisegons
5. Widely frequency range 200Mhz-3000Mhz
6. suport entrada/codificació/transmissió de vídeo de dos canals al mateix temps
7. Ample de banda 1Mhz-8Mhz opcional
8. Video signal repeater for long-distance

introducció

Especificació:

IO

entrada de RF	Two SMA females (to receive the signal)
Sortida de RF	com l'interval de protecció (to send out the signal again)
control UART	4PIN PH1.25mm Connector
TTL 3,3 V per defecte	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)
Portadors	2K
Ample de banda	TTL 3,3 V per defecte, TTL 3,3 V per defecte
FEC	1/2, 2/3, 3/4, 5/6, 7/8
interval de guarda	1/32, 1/16, 1/8, 1/4
constel · lació	QPSK, 16QAM, 64QAM
Bitrates	0.5TTL 3,3 V per defecte

RF Received

Bandes de freqüència	160860MHz MHz ~ (need an extra down converter block for 860-2300Mhz)
Mida del pas d'afinació	1KHz
sensibilitat	-97±1dBm(BW=8MHz, QPSK, CR=2/3, GI=1/16) for one channel and add 3dBm for two-channel

RF Transmitted

Bandes de freqüència	200MHz~2300MHz(other bands can be supported with special manufacturing)
Mida del pas d'afinació	1KHz
Power out	Configurable, maximum -5dBm(subject to frequency)

Seguiment i 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), ample de banda (B2), FEC, interval de guarda, constel · lació, and transmission power

Rang de temperatura
entrada/codificació/transmissió de vídeo de dos canals al mateix temps: 0° a +70 °C Ambient
Emmagatzematge: entrada/codificació/transmissió de vídeo de dos canals al mateix temps

Requisits d'alimentació
entrada/codificació/transmissió de vídeo de dos canals al mateix temps: 7~24VDC
Consum energètic: <250mA@12V

Característiques físiques
dimensions: 73x51x15mm
Pes brut: 32.4 grams

 

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.

Preguntes freqüents

1. What frequency does it support? Does it work well for my existing cofdm video transmitter and receiver?

1. 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.
2. Our COFDM relay repeater module supports all the COFDM transmitters and receivers, the transmission distance depends on your external power amplifier and filter support.

2. Does this module support over 1.4G? for example 2.4G, 3G, or 3.6G？

1. si, suport.

   COFDM Video encoder modulator transmitter module 3.5G and 4G test result.

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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.