User's Manual

Vst/Pst Controller Ver. A1.00
VST/PST System ETU Product Overview
P/N 1100035 page 2-1
2. VST/PST System ETU Product Overview
2.1 Product Description
The VST/PST Controller supports both long-range vehicle smart tags operating at
900 MHz and passive proximity transponders operating at 13.56MHz.
It’s main use is Smart Card/Tag Payment System.
It can serve as interface to a host computer or be used as a standalone unit.
At the heart of the VST/PST controller lies OTI’s MCI2 PCB.
The MCI2 is a microprocessor based smart transceiver supporting two 13.56MHz
transmission channels, so as to enable communication with PST tags carried by users.
The plug in VST Transceiver mounted on the MCI enables communication with VST in the
vehicle.
2.2 General description:
The VST/PST system comprises three elements:
• VST/PST Controller
• VST tag
• PST tag
The VST portion of the system support communication between the VST tag and the
controller over distances of up to few tens of meters, utilizing 915MHz communication
frequency.
The PST portion of the system support communication of the PST tag and the
controller over distances of up to 10cm, utilizing 13.56MHz frequency.
The Controller support one VST communication channel and two PST communication
channels.
It also support RS232 communication to host channel and one signaling channel
comprising two indication signals.
The system is used to perform “transaction” of data between the VST or PST tags and
the controller for various applications.
2.3 Additional details:
2.3.1 Power supply:
Controller – 110/220VAC.
VSR tag – 3.6V battery at few tens of mA.
PST tag – no independent power source. It draws its power from the controller’s
antenna transmitted power. Current consumption is in the range of few mA.