Installation Manual

Troubleshooting the System

Inc. 750.001.003

Revised June 1999

Step 10: Ensure the pot on the TX card in the Reader is turned to

maximum output.

Step 11: Ensure that the LEDs on the PCB stack in the Reader are

lit. Information on providing power can be found on page

32.

Step 12: Ensure the TX cable in the Reader is seated properly on

the TX card.

Step 13: Ensure that the layout of the system is within

specifications:

The loop layout 4 feet x ordered width. The Road Loop

should be installed on the right side of the lane and the

longest length should go across the width of the lane.

Number of wraps appropriate for the length of the antenna.

See the section Road Loop Layout & Connecting to the

ATU, page 61, for further information on wrapping the

Road Loop.

Step 14: Check environmental conditions:

No rebar under the Road Loop Antenna.

No power line interference directly above or below the

Road Loop Antenna.

No other RFID systems operating nearby.

Problem: The Road Loop activates Tags in another lane

Step 1: Ensure that the Road Loop is laid out correctly in the lane

– the longest side should go across the width of the lane.

Step 2: Ensure that the Road Loop is installed on the right-hand

side of the lane.

Step 3: Reduce the transmit voltage by adjusting the pot on the

transmit card in the Reader. See the chapter Modifying

Antenna Range: Adjusting the Transmitter Card, page 77.