EAS Tester Manual
Contents
1. deviation or sweep width Fs the sweep frequency Example Fc 8200k the center frequency is 8200 kHz or 8 2 MHz A 1300k the sweep width is 1300 kHz thus the system sweeps from 7 55 to 8 85 MHz Fs 82 2 the sweep frequency is 82 2 Hz Whenever you get a center frequency indication that is exactly twice the systems operation frequency the systems end stage is probably overdriven or not properly tuned Such a system can produce very high level 2nd harmonics which will be indicated by the EAS Tester Warning When the display indicates OK this does not mean that the system is adjusted correctly It only indicates that the signal is strong enough for the EAS Tester to provide a stable reading Technical data Centerfrequency range 100 kHz 15 Mhz Sweepwidth range Center freq 2 5 to center freq 90 Sweep frequency 10 Hz to 200 Hz Power consumption 9V 25mA from a 9V block battery Automatic switch off after 1 minute Dimensions mm 120 x 65 x 22 CustomWare Roggehullen 8 9403 WG Assen The Netherlands Tel 31 592 375700 Fax 31 592 375550 Internet info customware nl www customware nl2. JEAS TESTER User Manual September 6 1999 Revision 1 3 CustomWare 1999 Introduction The EAS Tester is a small measuring instrument capable of measuring the frequency characteristics of the transmitter in an electronic article surveillance system It is suitable to measure sweeping systems systems of which the transmitter sweeps around a center frequency The EAS Tester provides you with instant information about the systems centerfrequency the sweep width and the sweep frequency All information is displayed at once on a 2 x 16 character dot matrix display An OK is displayed when a measurement is stable for about one second The EAS Tester operates on a 9V block battery preferrably an alkaline type Operation To operate the EAS Tester push the ON button for a moment The EAS Tester will switch on and stays running for 1 minute Then it will switch itself off Hold the EAS Tester close to the transmitter antenna and wait until OK appears on the display The information on the display is then stable and valid When it is impossible to get the OK indication move the EAS Tester closer to the antenna When you are ar close as possible and still are unable to get the OK indication then the measured system has too low output power This might occur at certain one antenna systems The numbers on the display mean the following Fc the center frequency at which the system operates A the total frequency
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