Sigma AM-255 Manual Do Serviço

1. INTRODUCTION  page 1 

 

Model AM-255 

 

1.1.  SCOPE AND PURPOSE OF MANUAL 

 

This manual is designed to enable operating and service personnel to properly operate and care 

for the AM-255.  Since applications are necessarily site-specific, operation procedures are given 

in general terms.  Service and repair are covered to the board level.  Anything more complex 

than this requires that the instrument or assembly be returned to TSA. 

 

1.2.  GENERAL DESCRIPTION 

 

The TSA Model AM-255 Alarm Monitor is a self-contained unit designed for use with TSA’s 

personnel and vehicle portal monitors.  The AM-255 provides both audible and visual alarm 

indication for radiation level, high and low background, low power and tamper conditions.  In 

addition, output relays are provided to integrate the AM-255 into existing alarm systems. 

 

The AM-255 is a dual input instrument, which will monitor two sets of pillars, or two master 

pillars.  It has two complete sets of front panel lamps, as well as two input and two output 

connectors.  The two systems are totally independent. 

 

1.3.  SAFETY PRECAUTIONS 

 

WARNINGS: 

 

CAUTIONS: