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612806420L1-18A

August 2005

 1

Converting the Frequency Plan of a TRACER 6420 System

Introduction

TRACER 6420 systems are shipped from the factory with the frequency plan programmed as Plan A or Plan B. 
Each wireless link must contain a Plan A radio on one end and a Plan B on the other. A frequency plan 
conversion may be performed in the field, but should only be attempted if absolutely necessary and must 
always be performed by qualified personnel. This document outlines the procedure for changing the frequency 
plan of a TRACER 6420 system. 

Prerequisite Procedures

The current frequency plan configuration is listed on a label located on the rear panel of the unit (near the 
Antenna connector). Record the current configuration before beginning this procedure.

Tools and Materials Required

5/16” Torque wrench (8 in-lbs)

3/16” nut driver

Phillips-head screw driver

This document contains digital images showing connectors, cable routings, etc. Connector 
placement and cable routings in the images will not be identical to your TRACER 6420 
system. Follow the written procedure provided in this guide and refer to the images only 
when instructed.

Disconnect all cables attached to the TRACER 6420 system (including power, data, 
terminal RS-232, etc.) before performing this procedure.

Do not attempt to perform the conversion without the proper tools (see list below). Using 
improper tools will damage the unit.

Electronic equipment can be damaged by static electrical discharge. Before handling 
equipment, put on an antistatic discharge wrist strap to prevent damage to components. 
Place equipment in antistatic packing material when transporting or storing. When 
working on equipment, always place it on an approved antistatic mat that is electrically 
grounded.

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