1
2
3 4 5 6 7
Reader Equipment Installation
3M Toll RFID Reader 6204
Quick Start Guide
7
2.2.3.
Connecting the External Antenna
The 6204 supports four external Tx/Rx antennas. Connect the antenna to
the antenna port located on the bottom of the reader.
Refer to Chapter 7 in the 3M Toll RFID Reader 6204 User’s Guide for
specific information regarding the external antenna and antenna cable.
Caution:
The 3M Toll RFID Reader 6204 is equipped with four external RF ports. If
activated, these RF ports must be properly terminated with a 50 ohm load or a
functional UHF antenna before power up. Always power down the reader before
removing an antenna or load from an RF port.
ATTENTION
The 3M Toll RFID Reader 6204 antenna ports may be susceptible to
damage from static discharge or other high voltage. Use proper
Electrostatic Discharge (ESD) precautions to avoid static discharge
when handling or making connections to the 6204 reader antenna or
communication ports. Equipment failure can result if the antenna or
communication ports are subjected to ESD.
2.2.4.
Connecting Digital Inputs/Outputs
The 6204 is equipped with a general purpose digital input/output (I/O) port
that provides four optically isolated 5-24 VDC input signals and four open-
collector output signals. The digital inputs can be used as general purpose
inputs or to trigger the reader for tag reading. These inputs can be
configured to provide an external read trigger from proximity sensors, photo
switches, or other devices.
The digital outputs can be used as general purpose outputs, to indicate tag
reading activity, or to indicate the reader is transmitting (RF On). The
outputs can also be configured to trigger conveyor gates or other access
control and sorting devices. For detailed information on configuring the
digital inputs and outputs refer to Chapter 7 in the 3M Toll RFID Reader
6204 User’s Guide.
