System Introduction

Davis Derby manufactures a range of radio frequency identification systems using passive battery-less radio transponders. These transponders are detected by an antenna connected to a Davis Derby Rapid 2000 RFID reader unit. This data sheet describes the Rapid 2000 reader unit: a range of compatible antennas and transponders is also available.

Typical applications include the following:

• Vehicle Detection

• Personnel Detection

• Asset Tracking

• Access Control

Description of the Rapid 2000 Reader Unit

The mains-powered Rapid 2000 reader unit is housed in a tough IP 67 weatherproof polycarbonate enclosure which measures 380mm wide × 280mm wide × 130mm deep.

The self contained unit is equipped with an auto-seeking power supply unit, a radio frequency reader module and a range of optional modules which are application specific. These optional modules include up to four relay modules and an antenna multiplexer module used in conjunction with remote antenna tuning module allowing up to four antennas to be used with a single reader unit. One of the remote antenna tuning modules can be fitted within the Rapid 2000 reader unit.

There are two light emitting diodes mounted on the front door, one of which indicates that the unit is functioning correctly and the other that a transponder has been detected.

The Rapid 2000 reader unit has a data link, which can be specified when ordering to be RS 232 or RS 422. Alternatively, a 433MHz u.h.f. radio telemetry modem can be fitted.

Versions

There are a number of standard versions available each of which is equipped with a single relay module. Details of the standard versions are shown in the following table;

Code Number	Description	Data Link
69 000 101	One internal lid-mounted antenna.	RS 232
69 000 102	One internal lid-mounted antenna and a multiplexer.	RS 232
69 000 102	One multiplexer to cater for four antennas.	RS 232
69 000 102	Provision for a single external antenna.	RS 232
69 000 102	One internal lid-mounted antenna.	RS 422
69 000 102	One internal lid-mounted antenna and a multiplexer.	RS 422
69 000 102	One multiplexer to cater for four antennas.	RS 422
69 000 102	Provision for a single external antenna.	RS 422

Optional Extras

There are a number of optional extras which can be specified as follows when ordering

Code Number	Comments	Number Which can be Specified
57 730 121	Relay module	Up to three additional relays
47 731 274	Remote tuning module (RTM)	Up to four RTM’s
47 731 271	Standard 4-way antenna multiplexer	One multiplexer only
47 731 272	4-way antenna multiplexer (for use with remote tuning module)	One multiplexer only

Block Diagram

A block diagram of the Rapid 2000 reader unit is shown below:

Specification

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