CIRCUIT DESIGN STD-302S Manual de usuario
OG_STD-302S-429M_v11e
OPERATION GUIDE
UHF Narrow band radio transceiver
STD-302S 429 MHz
Operation Guide
Version 1.1 (Apr. 2015)
This product requires electrical and radio knowledge for setup and operation.
To ensure proper and safe operation, please read this operation guide thoroughly prior to use.
Please keep this operation guide for future reference.
CIRCUIT DESIGN, INC.,
7557-1 Hotaka, Azumino
Nagano 399-8303 JAPAN
Tel: + +81-(0)263-82-1024
Fax: + +81-(0)263-82-1016
e-mail: info@circuitdesign.jp
http://www.circuitdesign.jp
OG_STD-302S-429M_v11e Circuit Design, Inc.
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OPERATION GUIDE
CONTENTS
GENERAL DESCRIPTION & FEATURES ...........................3
SPECIFICATIONS STD-302S 429 MHz ...........................4
PIN DESCRIPTION .............................................................6
BLOCK DIAGRAM...............................................................9
DIMENSIONS....................................................................10
PLL IC CONTROL ............................................................. 11
PLL IC control .................................................................. 11
How to calculate the setting values for the PLL register ........12
Method of serial data input to the PLL.................................13
TIMING CHART.................................................................14
PLL FREQUENCY SETTING REFERENCE .....................16
TEST DATA .......................................................................18
CAUTIONS & WARNINGS ................................................19
OG_STD-302S-429M_v11e Circuit Design, Inc.
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OPERATION GUIDE
GENERAL DESCRIPTION & FEATURES
General Description
The UHF FM narrow band semi-duplex radio data module STD-302S is a high performance
transceiver designed for use in industrial applications requiring long range, high performance and
reliability.
All high frequency circuits are enclosed inside a robust housing to provide superior resistance
against shock and vibration. A narrow band technique enables high interference rejection and
concurrent operation with multiple modules.
STD-302S 429 MHz, a narrowband module with 12.5 kHz channel steps, achieves high TX/RX
switching speed, making it an ideal RF unit for inclusion in feedback systems.
This product is designed to meet the basic specifications of Japanese ARIB STD-T67 standard,
however it has not been certified for conformity with the technical regulations. Users are required
to perform the procedures for certification with their final products after installing this product in
their systems.
Features
10 mW RF power, 3.0 V operation
Programmable RF channel
Fast TX/RX switching time
High sensitivity -120 dBm
Excellent mechanical durability, high vibration & shock resistance
ARIB STD-T67 compliant
Applications
Telemetry
Water level monitor for rivers, dams, etc.
Monitoring systems for environmental data such as temperature, humidity, etc.
Transmission of measurement data (pressure, revolutions, current, etc) to PC
Security alarm monitoring
Telecontrol
Industrial remote control systems
Remote control systems for factory automation machines
Control of various driving motors
Data transmission
RS232/RS485 serial data transmission
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OPERATION GUIDE
SPECIFICATIONS
STD-302S 434 MHz All ratings at 25 +/-10 °C unless otherwise noted
General characteristics
Item Units MIN TYP MAX Remarks
Communication method Simplex, Half-duplex
Emission class F1D
Operating frequency range MHz 429.25 429.7375
Operation temperature range °C -20 60 No dew condensation
Storage temperature range °C -30 75 No dew condensation
Frequency drift / year ppm -1 1 TX freq., RX Lo freq.
Initial frequency tolerance ppm -1.5 1.5 TX freq., RX Lo freq.
Dimensions mm 30 x 50 x 9 mm Not including antenna
Weight g 25 g
Electrical specification <Common>
Item MIN TYP MAX Remarks
Oscillation type PLL controlled VCO
Frequency stability (-20 to 60°C) ppm -4 4 Reference frequency at 25 °C
TX/RX switching time ms 15 20 DI/DO
Channel step kHz 12.5
Data rate bps 2400 4800 DO/DI
Max. pulse width ms 15 20 DO/DI
Min. pulse width us 200 DO/DI
Data polarity Positive DO/DI
PLL reference frequency MHz 21.25 TCXO
PLL response ms 30 60 from PLL setting to LD out
Antenna impedance Ω 50 Nominal
Operating voltage V 3.0 5.5
TX consumption current mA 44 48 Vcc = 3.0 V
RX consumption current mA 26 30 Vcc = 3.0 V
Transmitter part
Item MIN TYP MAX Remarks
RF output power mW 5 9 12 Conducted 50 Ω, 429.5 MHz
Deviation kHz ±1.7 ±2.0 ±2.3 PN9 4800 bps
DI input level V 0 5.5 L= GND, H = 3 V- Vcc
Residual FM noise kHz 0.17 DI=L, LPF=20 kHz
Spurious emission dBm -37 -27 Conducted 50 Ω
Adjacent CH power dB 40 PN9 4800 bps
Occupied freq. bandwidth kHz 8.5 PN9 4800 bps
OG_STD-302S-429M_v11e Circuit Design, Inc.
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OPERATION GUIDE
Receiver part
Item MIN TYP MAX Remarks
Receiver type Double superheterodyne
1st IF frequency MHz 21.7
2nd IF frequency kHz 450
Maximum input level dBm 10
BER (0 error/2556 bits)
*1
dBm -108 -115 PN 9 4800bps
BER (1 % error)
*2
dBm -120 PN 9 4800bps
Sensitivity 12dB/ SINAD dBm -120 fm1 k/ dev 2kHz CCITT
Spurious response rejection *3 dB 70 1 st Mix, 2 signal method, 1 % error
55 2 nd Mix, 2 signal method, 1 % error
Adjacent CH selectivity *3 dB 50 +/- 12.5kHz,
2 signal method, 1 % error
Intermodulation
*4
dB 50 2 signal method, 1 % error
DO output level V 0 2.8 L = GND H = 2.8 V
RSSI rising time ms 30 50 CH shift of 12.5 kHz (from PLL setup)
50 70 When power ON (from PLL setup)
Time until valid Data-out *5 ms 50 100 CH shift of 12.5 kHz (from PLL setup)
70 120 When power ON (from PLL setup)
Spurious radiation dBm -60 -54 Conducted 50 ohm
RSSI mV 300 350 400 With -97 dBm at 429.5 MHz
190 240 290 With -113 dBm at 429.5 MHz
Specifications are subject to change without prior notice
Notice
The time required until a stable DO is established may get longer due to the possible frequency drift
caused by operation environment changes, especially when switching from TX to RX, from RX to TX
and changing channels. Please make sure to optimize the timing. The recommended preamble is more
than 20 ms.
Antenna connection is designed as pin connection.
RF output power, sensitivity, spurious emission and spurious radiation levels may vary with the trace
used between the RF pin and the coaxial connection. Please make sure to verify those parameters
before use.
The feet of the shield case should be soldered to a wide GND pattern to avoid any change in
characteristics.
Notes about the specification values
*1 BER: RF level where no error per 2556 bits is confirmed with the signal of PN9 and 4800 bps.
*2 BER (1 % error) : RF level where 1% error per 2556 bits is confirmed with the signal of PN9 and 4800 bps.
*3 Spurious response, CH selectivity: Jamming signal used in the measurement is unmodulated.
*4 Intermodulation: Ratio between the receiver input level with BER 1% and the signal level (PN9 4800 bps)
added at the points of 'Receiving frequency - 200 kHz ' + ' Receiving frequency -100kHz' with which BER
1% is achieved.
*5 Time until valid Data-out : Valid DO is determined at the point where Bit Error Rate meter starts detecting
the signal of 4800bps, 1010repeated signal.
All specifications are specified based on the data measured in a shield room using the PLL setting controller
board prepared by Circuit Design.
Measuring equipment:
SG=ANRITUS communication analyzer MT8802
Spectrum analyzer = ANRITSU MS2830A
BER measure = ANRITSU MP1201G
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OPERATION GUIDE
PIN DESCRIPTION
Pin name I/O Description Equivalent circuit
RF I/O RF input terminal
Antenna impedance nominal 50 Ω
GND I
GROUND terminal
The GND pins and the feet of the
shield case should be connected to a
wide GND plane.
VCC I Power supply terminal
DC 3.0 to 5.5 V
TXSEL I
TX select terminal
GND = TXSEL active
To enable the transmitter circuits,
connect TXSEL to GND and RXSEL
to OPEN or 2.8 V.
RXSEL I
RX select terminal
GND= RXSEL active
To enable the receiver circuits,
connect RXSEL to GND and TXSEL
to OPEN or 2.8 V.
AFOUT O
Analogue output terminal
There is a DC offset of approx. 1 V.
Refer to the specification table for
amplitude level.
CLK I
Clock terminal fof PLL data setting
input
Interface voltage H = 2.8 V, L = 0 V
DATA I PLL data setting input terminal
Interface voltage H = 2.8 V, L = 0 V
OG_STD-302S-429M_v11e Circuit Design, Inc.
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OPERATION GUIDE
LE I
Load enable signal input terminal for
PLL data setting input
Interface voltage H = 2.8 V, L = 0 V
LD O PLL lock/unlock indicator terminal
Lock = H (2.8 V), Unlock = L (0 V)
RSSI O
Received Signal Strength Indicator
terminal
DO O Data output terminal
Interface voltage: H=2.8V, L=0V
DI I
Data input terminal
Interface voltage: H=2.8V to Vcc,
L=0V
Input data pulse width Min.200 μs
Max. 20 ms
OG_STD-302S-429M_v11e Circuit Design, Inc.
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OPERATION GUIDE
FREQUENCY TABLE (STD-T67)
Channel number Operating frequency (MHz) Transmission time restriction
1 429.1750
Transmission for 40 sec, pause for 2 sec
2 429.1875
3 429.2000
4 429.2125
5 429.2250
6 429.2375
7 429.2500
Continuous transmission
(Intermittent communication possible)
8 429.2625
9 429.2750
10 429.2875
11 429.3000
12 429.3125
13 429.3250
14 429.3750
15 429.3875
16 429.3625
17 429.3750
18 429.3875
19 429.4000
20 429.4125
21 429.4250
22 429.4375
23 429.4500
24 429.4625
25 429.4750
26 429.4875
27 429.5000
28 429.5125
29 429.5250
30 429.5375
31 429.5500
32 429.5625
33 429.5750
34 429.5875
35 429.6000
36 429.6125
37 429.6250
38 429.6375
39 429.6500
40 429.6625
41 429.6750
42 429.6875
43 429.7000
44 429.7125
45 429.7250
46 429.7375
OPERATION GUIDE.
OG_STD-302S-429M_v11e Circuit Design, Inc.
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BLOCK DIAGRAM <STD-302S 429MHz>
OPERATION GUIDE.
OG_STD-302S-429M_v11e Circuit Design, Inc.
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DIMENSIONS
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