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ALP-100 Log Periodic Antenna

This section explains the following:
 a) 

Introduction

 b) 

Setup

 

 Setup Procedure

2

2-1

2.0 Introduction

This section describes antenna setup and mounting for EMI measurement.

2.1 Antenna 

Setup

2.1.1   Connecting

The  and Model ALC-100 Log Periodic Antennas have N type (f) connectors. The 
same connector is used for both signal input and output.  

2.1.2   Antenna setup for receiving signals 

The  or Model ALC-100 antenna can be used to measure EMI from an equipment 
under test (EUT).  The antenna is mounted on either an antenna mast (Model AM-
400) or an antenna tripod.  A cable is used to connect the antenna to the a measu-
reing instrument. If a long cable is used, cable loss must be measured and used in 
calculating the fi eld strength.

2.1.3   Antenna setup for transmitting signals 

The Model ALC-100 antenna can be used to receive and transmit signals.  The an-
tenna is mounted on either on an antenna mast (Model AM-400 antenna mast ) or 
antenna tripod (Model AT-100). To transmit signals, the antenna is connected to a 
signal generator and power amplifi er. The Model ALC-100 Log Periodic Antenna 
can transmit up to 500 Watts continious power. The fi eld generated by the antenna 
can be measured by using a fi eld strength meter. 

2.1.3 Test location

Summary of Contents for ALC-100

Page 1: ...LOG PERIODIC ANTENNA 300 1000 MHz MODEL ALC 100 rev 120103...

Page 2: ...f material g calibration Any warranties or guarantees whether expressed or implied that are not specified set forth herein will not be considered applicable to any equipment sold or otherwise furnishe...

Page 3: ...in the field of EMC for the purpose of generating electromagnetic fields The Test lo cation should be selected to avoid interference to other equipment and exposure of personnel to high electromagneti...

Page 4: ...Information contained in this manual is the property of Com Power Cor poration It is issued with the understanding that none of this material may be reproduced or copied without written permission fr...

Page 5: ...quipment Specifications 1 1 1 4 Equipment Accessories and Documents Supplied 1 3 2 Connecting Procedures 2 1 2 0 Introduction 2 1 2 1 Antenna Setup 2 1 3 Theory of Operation 3 1 3 0 Overview 3 1 3 1 T...

Page 6: ...Log Periodic antennna was specifically designed for radiated EMI measurement over a wide frequency range This antenna was designed to receive radiated EMI signals or transmit signals during susceptib...

Page 7: ...ALP 100 Log Periodic Antenna 1 2 Figure 1 1 ALC 100 Log Periodic Antenna...

Page 8: ...nna 1 3 1 4 Equipment Accessories and Documents Supplied Equipment accessories and documents supplied with the ALC 100 Log Periodic Antennas are as follows a One 1 Log Periodic Antenna c User s Guide...

Page 9: ...e 300 1000 MHz VSWR typ 1 2 1 Impedance 50 ohms nominal Power Handling 500 Watts CW Connector N f Weight 4 5 lbs Mounting Center Pivoting joint for Hori zontal Vertical polarization Dimensions Length...

Page 10: ...ALP 100 Log Periodic Antenna Figure 1 2 Typical Antenna Factors for ALC 100 Log Periodic Antenna 1 5...

Page 11: ...ther an antenna mast Model AM 400 or an antenna tripod A cable is used to connect the antenna to the a measu reing instrument If a long cable is used cable loss must be measured and used in calculatin...

Page 12: ...use Large conductive building struc tures and electrical cables can reflect emissions of the equipment under test causing errors in the test data In addition care should be taken to keep measuring int...

Page 13: ...nnot transmit signals However Model ALC 100 antenna can both receive and transmit signals over the frequency range of operation Model ALC 100 antennas are used for susceptibility and emissions testing...

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