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RECOMMENDED OPERATING CONDITIONS

OPERATING CHARACTERISTICS

RI-STU-251B

SCBS852 – MARCH 2001

over operating free-air temperature range (unless otherwise noted)

RI-STU-251B

Power Supply

10 to 24 Vdc, regulated

over operating free-air temperature range (unless otherwise noted)

PART NUMBER

PARAMETER

UNIT

RI-STU-251B

Relative Humidity

<97% non-condensing, IEC 68-2-30 Test Db, 21 cycles

RF Transmit Frequency

134.2

kHz

64 kByte EPROM for Firmware

Memory

1kBit EEPROM for Configuration

32 kByte RAM for Data

Data Storage

909 ID Codes (each 64bit)

Communications Interface

RS232, RS422/485

System Architecture

Point-to-point and point-to-multipoint

Communications Parameters

600 - 57600 baud, 7/8 data bits, even/odd parity

Communications Protocol

ASCII with Xon/Xoff handshake, TIRIS™ Bus Protocol

Inputs/Outputs

8 configurable digital I/Os, 2 open collector outputs

Antenna Tuning Range

26 to 27.9

µH (Dynamic Auto Tuning)

Antenna Resonance Voltage

Max. 380 Vpeak

Transponder Types

134.2 kHz HDX/FSK

Dimensions (L

× W × H)

(200 mm

× 120mm × 120 mm) ± 1.5 mm

Weight

900

g

Mounting

DIN rail TS35

2

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