Page 1-2 MDE-3664B TRIND® Start-up, Service, and Parts Manual · June 2013
Introduction
How TRIND Works
How TRIND Works
TRIND utilizes Radio Frequency (RF) waves to communicate with a customer’s transponder.
Transmitters located on overhead assemblies transmit radio waves that serve as a “wake up”
call. As a car mounted transponder or hand-held transponder enters the transmitter’s effective
read zone, the transponder is activated. The transponder then transmits a code which is
received by the TRIND antennas mounted overhead or on the option doors.
This transmitted code is communicated from the TRIND to the CRIND unit, and from there to
the POS. The POS system communicates with a host to obtain authorization.
Car mounted transponders are activated when they are within six feet of the front of the
dispenser perpendicular to front of dispenser. Hand-held transponders, usually on a key chain,
function when pointed at a target graphic on the option door. Two-way communication is
indicated when the option door target graphic light comes on, whether by car mount or
hand-held transponder signal.
Figure 1-1: Encore and Eclipse Target Graphic Location
Eclipse
Target Graphic
Encore
MPD-3
Advantage Narrow Frame (36”)
Advantage Wide Frame (48”)
Target Graphic