RI-STU-251B
www.ti.com SCBS852 – MARCH 2001 SERIES 2000 READER S251B
FEATURES APPLICATIONS Best in Class Performance Through Patented
HDX Technology
Automatic Antenna Tuning
High Power Output
Proven in Harsh Industrial Environments
Easy to Install and Use Access Control
Vehicle Identification
Container Tracking
Asset Management
Waste Management DESCRIPTION
The Texas Instruments’ low-frequency (LF) reader provides all the functionality required to communicate with
Texas Instruments 134.2 kHz LF transponders which are available in a variety of form factors. The RI-STU-251B
Reader/Writer is capable driving a variety of antennas with inductance ranges from 26.0ВµH to 27.9ВµH including
TI standard antennas RI-ANT-G01E, RI-ANT-G02E, RI-ANT-G04E gate antennas as well as RI-ANT-S01C and
RI-ANT-S02C stick antennas. The RI-STU-251B includes an automatic antenna resonance tuning feature which
further reduces the need for maintenance and simplifies installation. It also supports both RS232 and RS422/485
interface standards.
The RI-STU-251B is well suited for usage in a broad range of applications including, but not limited to, access
control, vehicle identification, container tracking, asset management and waste management applications.
The Series 2000 Reader S251B provides all RF and Control Functions to communicate with 134.2 kHz
HDX/FSK transponders. It sends an energizing signal to the transponder, modulates the RF signal to send data …