STD-502-R / DSSS low power radio transceiver0 pages
DSSS low power radio transceiver
STD-502-R
2.4GHz
The STD-502-R 2.4 GHz transceiver uses direct sequence spread spectrum (DSSS) modulation and a true diversity circuit, enabling reliable
communications even in the congested 2.4 GHz band.
The STD-502-R complies with the European ETSI EN300440, U.S. FCC Part 15.247, Canada IC RSSS-210 standards and Japanese ARIB
STD-T66 standard, making it ready for the global market.
Low power consumption and battery operation give the STD-502-R the performance demanded for applications where long range and
reliability are required.
The transceiver uses a transparent data interface to enable users to communicate using their own protocols.
The modules can be set easily via the UART interface using dedicated commands.
*Circuit Design developed an onboard ASIC containing SS correlator (a key part of spread spectrum communication) .
This ensures long term supply for industrial applications.
Features
・
・
・
・
・
・
・
・
・
CE, FCC and IC conformity certification
ARIB STD-T66 compliant
Uses direct sequence spread spectrum (DSSS) modulation
A true diversity receiver with two built-in receiver circuits
Module settings using dedicated commands
Data communication uses a transparent interface
Low power operation
77 channels
Range 300m LOS
Applications
・ Industrial telecontrol
・ Telemetry systems
General
Specification
Frequency range
2402.5 2478.5 MHz
Number of RF channels
77
Channel spacing
1 MHz
RF chip rate
144 k , 288 kcps
Modulation system
FSK
Supply voltage
3.3 5.5 V
Supply current
TX: 65 mA RX: 70 mA
RF output power
10 mW
Receiver sensitivity
-93 dBm
Operating temp. range
-20 + 65 °C (storage -30 〜 +80 °C)
No dew condensation
Dimension
50 x 30 x 9 mm
Not including connectors
Weight
24 g
RF connectors
Interface
Parameter
RP-SMA x 2
Remark
EIRP
Parameter
Specification
Remark
Data interface (DI / DO)
9.6 k / 19.2 kbps
Sync: CLK terminal
Command interface (TXD / RXD)
UART communication (RS232C format)
- Communication method
Asynchronous
- UART bit rate
19200, 38400, 57600 bps
- Flow control
None
- Other parameters
Data length: 8 bits, Parity (None), Stop bits 2
Specifications are subject to change without prior notice
www.circuitdesign.jp
STD-502-R 2.4GHz ver1.4 Oct. 2014
Sales Division
7557-1 Hotaka, Azumino, Nagano 399-8303, Japan
Tel:+81-(0)263-82-1024
Fax:+81-(0)263-82-1016