User Manual

TRACE AMR OVERVIEW
Universal RF Interrogator ? Host Programming Guide Page 6
AMCO Automated Systems • P/N 52845G125 Rev 1 FEB 2004
Meter interface. Using a mechanical-to-digital interface, the TRACE
transponder senses the output from the index of a utility meter, translates
this into electronic form and stores it in the transponder’s memory.
Transponder data acquisition. The transponder is programmed with a
unique serial number at the time of manufacture. Upon installation on a
meter, the current (or baseline) meter index reading is also programmed
into the transponder’s memory. As the meter reading advances it
automatically updates transponder memory. The transponder also
records changes to the tamper detection sensor.
Compensation factor. For TRACE transponders using firmware
Version 9 or higher, a compensation factor can also be programmed into
the transponder memory ensuring the transponder readings match the
compensated mechanical index reading.
Route information loading. Route data includes meter account number,
address and latitude/longitude coordinates (when available), and
transponder serial number. This information, along with Guide and Start
files, is downloaded to the interrogator prior to commencing automated
meter reading. By also tracking the vehicle or interrogator’s coordinates,
a GPS-equipped system determines which transponders in the route
should lie within range at any given time and transmits those serial
numbers requesting meter data.
Interrogation. Once placed in an interrogation mode by the meter
reader, the TRACE interrogator transmits serial number(s) of the desired
transponder(s) along with a command requesting the contents of each
transponder’s memory. Transponders are selected for reading on the
basis of route and meter location information stored in the interrogator
and presence of the transponder within range of the interrogator.
Route data processing. Meter data from transponders is stored in the
interrogator’s memory and can be transferred to the utility’s host
computer for processing.