User Manual

URFI OVERVIEW
Universal RF Interrogator ? Host Programming Guide Page 7
AMCO Automated Systems • P/N 52845G125 Rev 1 FEB 2004
Chapter Three
Universal RF Interrogator Overview
The TRACE Universal RF Interrogator is a plug-in adapter that allows
any current DOS-compatible handheld data terminal to transmit and
receive data from TRACE transponders.
With the URFI, your existing investment in handheld terminals can
accommodate manual reads as well as TRACE automated meter reads.
URFI Components
The URFI consists of the following components that effectively turn your
existing DOS-based handheld terminal into TRACE interrogator:
! Universal RF Interrogator unit
! URFI carrying pouch
! Transmitting antenna and coaxial cable
! Receiving antenna and coaxial cable
! Antenna bracket
! Battery pack with cigarette lighter adapter and cable
! Battery pack carrying pouch
! RS232 communications cable
! A/C power adapter
How the URFI Works
When the URFI is properly interfaced to a handheld data terminal, it
becomes an interrogator that stores route information in the terminal and
automatically acquires meter data remotely as the meter reader walks or
drives along the specified routes.
When interrogating, the URFI sends out a radio frequency (RF) signal
containing the IDs of transponders in the particular route. When a
transponder receives the signal containing proper authorization and its
unique serial number, the transponder replies by transmitting stored
meter data including index reading, tamper status and an error detection
code to ensure accuracy.
Meter reads can be captured in any order by simply pressing one key on
the handheld terminal’s keypad as designated by your host
programming.