COFDM SPECIALIST
Mobile video wireless communication

PRODUCT DETAIL
Half-duplex Wireless Data Module SG-303
Code: SG-303
Original: 0.00
Detail

SG-303 wireless data transmission radio, is a long-distance wireless data transmission products.Its advantages of small size, metal shell, good shielding performance, strong anti interference, the internal use of integrated amplifier,TCXO reliability device and a built-in watchdog that ensure its good stability and high reliability. Half duplex communication working mode which is more convenient for the user to provide two-way data signal transmission and detection and control functions. The Send and receive time less than 50ms and timeliness. Suitable for wireless data acquisition, industrial control, the measurement and control of the oil field, watermark monitoring important industry.


Features

1) Power and sensitivity:

 Radio frequency output power is 5W~10W,

 high receiving sensitivity -120dbm (1200bps); -117dbm(2400bps),-105dbm(9600bps)                                            


2). Multiple frequency,to meet various customers' needs

Carrier frequency can be  220-220 MHZ, 450-470 MHZ.


3) High speed wireless communications and data buffer.

Air rate is greater than or equal to a serial port rate can continuous transmission infinite data, when the air rate is less than or equal to a serial port rate, temporary storage buffer then transfer.


4) transparent transmission, convenience for the user.

Radio after receiving the data needs to be sent, launch will start automatically without user to send and receive control.


5) Low power consumption

Receiving current < 60 mA, emission current < 1.5 A, hibernation current < 1 ma.


6) High reliability, small volume, light weight.

Aluminum alloy shielding enclosure, small size: 85 mm x 58 mm x 16 mm.



Connection

The definitions and connection methods with terminals are shown in the following





name

Description

level

remark

1

GND

GND

5V


2

A(TXD)

RS-485 A or TXD of RS-232



3

B(RXD)

RS-485 B or RXD of RS-232



4

NC




5

DGND

DGND



6

RXD/TTL

Data receive(TTL level)

TTL


    7

TXD/TTL

Data transmit(TTL level)

TTL


8

--

--



9

Test

Internal test





Specification:

Frequency: 230MHz/400MHz/420MHz/450MHz

Frequency stability: ±2.5ppm;

Working mode:Half-duplex

Channel spacing: 25  kHz;

Bit rate:1200/2400/4800/9600/19200bps (option)

Channel rate:1200/2400bps  (option)

Transceiver conversion time:<50ms

Receiving sensibility: -105dbm(9600bps)  

Working temperature:-40~+80℃; (industrial grade)

Working humidity:10% ~ 90% relative humidity, no condensation

Data format:8E1/8N1/801(other format also available,for example:9 data bits)

Power supply: DC12V(can also custom made according to your request).

Dimension: 85x58x16mm (without radiator);



Receiver technical index:

Receiving sensibility: 0.25μV ( 12dB SINAD)

Adjacent channel selectivity: ≥70dB

Intermodulation suppression: ≥65dB

Spurious and image rejection: ≥70dB

Audio output power : 0.5W(8Ω,10% distortion)

Receive distortion:≤3%

Receiver current:≤ 50mA

Dimension:85x58x16mm


Transmitter technical index:

Transmit output power: 5W~10W

Transmit current:<1.5A

Sleep current: <1mA

Clutter and images rejection: ≥70dB

Spurious Response: ≥70dB

Modulation frequency offset:≤3%

Modulation distortion:5mV

Modulation sensibility:≤300mA

Size: 85x58x16mm






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