COFDM Transmitters

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22km Uav-to-Ground 2W RF Transmission Power Data/Video Wireless Transceiver

Key Features
  • TDD OFDM full duplex wireless transceiver for video and data Link.
  • Up to 30Mbps Iperf Throughput @20MHz channel.
  • Supports Point-to-Point and Point-to-Multipoint Networks or Mesh networks.
  • Interface through web browser or control uart.
  • 2 Ethernet and 3 channel uart data link.
  • Long distance wireless transceiver with 2W RF power.
D-936LA was designed for video and data wireless transmission with two way wireless data link. This OFDM radio device works at 800MHz or 1.4GHz bands, with frequency hopping technology (FHSS) to make sure better stability signal communication.
 
Features
  • TDD OFDM modulation
  • Supports 806~826HMz band or 1428~1468MHz band or 1420~1530MHz band
  • Supports FHSS inside each band
  • 1.4/3/5/10/20MHz band widths
  • Maximum 30Mbps@20MHz throughput
  • RF transmission maximum power: 2W
  • Constellation: QPSK, 16QAM, 64QAM, self-adaption
  • Sensitivity: -108dBm(1Mbps)
  • Supports IP data transmission (2 Ethernet port)
  • Supports serial data transmission (3 channel, RS232/TTL/Sbus optional)
  • 1~7km(ground-to-ground), 22km (UAV-to-ground, optional distance grade)
  • Web UI and control uart for management
  • AES128 encryption
  • Uplink and downlink stream control
  • Networking mode: Point-to-Point, Point-to-Multipoint, Relay, and Mesh(specify)
  • Movement Speed: Supports no less than 300km/h
  • Compact size and light weight
  • Rugged aluminum alloy housing
  • Power input: 12~18V(2W)
  • Power consumption: <12W(RF Power 2W)    
  • Dimensions: 103.4*61.4*22 mm 
  • Weight: 142g.

I/O Description
Ethernet1 4Pin ZH1.5mm connector, bridged with Ethernet2
Ethernet2 RJ45 connector, bridged with Ethernet1
uart*3 3Pin GH1.25mm lockable connector*3, 3 channel uart, RS232/TTL/Sbus optional
Power in XT30PW-M connector
ANT1 Tx/Rx Antenna port, SMA female
ANT2 Rx Antenna port, SMA female

Specification
Ethernet 1
Ethernet 1 is bridged connection with Ethernet 2 on board inside the device. It's a 4PIN ZH1.5mm connector.


Ethernet 2
Ethernet 2 is bridged connection with Ethernet 1 on board inside the device. It's a RJ45 connector.
IP camera video can be connected with D-936LA directly via Ethernet port. HDMI/SDI/AHD/AV camera video can be encoded with SE11/SE10 device and then work with D-936LA via Ethernet connection.


SD10 H.265/H.264 video decoder device can work with D-936LA via Ethernet connection on the video received side for realtime video monitoring.


Data uart
3Pin GH1.25mm connector*3, 3 channel uart( RS232/TTL/Sbus optional ). GH1.25mm connector is lockable.

D1 uart data is wireless transmitted via link layer protocol, D1 uart will be assembled as RS232 uart as default, it can also be assembled as TTL uart according to customers requiremnt.

D2 uart is wireless transmitted via IP protocol, D2 uart will be assembled as RS232 uart as default, it can also be assembled as TTL uart or Sbus port(GND/Sbus-in/Sbus-out) according to customers requiremnt.

D3 uart is wireless transmitted via IP protocol, D3 uart will be assembled as RS232 uart as default, it can also be assembled as TTL uart according to customers requiremnt. D3 uart can also be set as control uart.
Baud rate of the three uart can be setup by web UI.

The three uart assembled as RS322( or TTL ) uart:


The three uart assembled as 2 RS232 (or TTL) uart + 1 Sbus port:


The D-936LA system has a built-in uart to Ethernet TCP server. The D2 and D3 uart ports can use the uart to Ethernet TCP server function to achieve uart to Ethernet data conversion, and it can support both TCP and UDP protocols.



LEDs
Power LED, red light on normal powered;
Node LED, blue light for Node type indictor. Continuous light when the device worked as Centrol Node, blink light when the device worked as Access Node;

Link LED, wireless link working status indictor as below description:
Link LED Wireless link status
No light This node is not connected with the wireless network.
Red light This node is connected with the wireless network, the wireless link signal is weak.
Orange light This node is connected with the wireless network, the wireless link signal is in middle.
Green light This node is connected with the wireless network, the wireless link signal is strong.

Device size(mm)


Wireless networking with D-936LA
D-936LA supports two operating modes: Access Node or Central Node. It can be managed through web UI. D-936LA supports features of maximum 16 Access Nodes connected to a Central Node. All of the Nodes are in a same wireless LAN and share the whole transmission bandwidth (maximum 30Mbps@20MHz throughput). Data from Central Node to Access Node, we call downlink, and data from Access Node to Central Node, we call uplink. Uplink and downlink stream ratio can be controlled through web UI. When using D-936LA for Point-to-Point transmitting, uplink and downlink share the whole transmission bandwidth (maximum 30Mbps@20MHz throughput) too. D-936LA supports networking mode: Point -to-Point, Point-to-Multipoint, Relay, and Mesh (specify mesh version when order).

Point-to-Point transmitting


Relay transmitting


Relay transmitting

Mesh transmitting (Specify)

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