Contacta Loop-FSM Посібник користувача - Сторінка 2

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CONTENTS

Meter Design goals

Meter Operation Basics

Background Noise Tests

Program RMS/Peak Levels

Evaluating Frequency Response

Headphone/Flat spectrum output

Line In Flat Response

Meter Specifications / Calibration

Meter Design Goals

Thank you for choosing our Field Strength Meter. It has been designed

to ensure that Hearing Loop (Induction Loop) Systems be installed and certified

to the new IEC 60118-4 standard. When these standards are met the user expe-

rience will be of equal quality wherever they have the opportunity to use their T-

coils. Our design team interviewed many installers throughout the industry which

resulted in the following design goals:

1. Very accurate and easy to read

2. Simple/straightforward operation

3. Based on the IEC 60118-4 specification

4. Headphone output

5. Flat spectrum output

6. Built to last and be reliable

As you follow through this manual, we will review how the meter should be used

to certify that the requirements of the IEC specification have been met.

Again, Thank you

Contacta Design and Engineering Team

Meter Specifications:

Measurement Range:

True-RMS Crest Factor:

Resolution:

<0.1dB resolution for levels

over –32dB

Displayed resolution:

0.1 dB

Detection Type:

True RMS on all features

Sensor:

Pickup Coil

Direction of Sensitivity:

Length-wise of meter's longer dimension

and Parallel to meter face (Position noted

on Product)

Calibration:

Calibrated at 1,000 Hz (sine) to read 0

dB at 5.03 mG

Frequency Response:

Flat ±1dB from 50 Hz to 10,000 Hz

A-Weighted:

Class 2 meter specified in IEC 61672-1

Power Source:

Single 9v Battery & External Power

Jack

Headphone Jack:

Output A-Weighted or Flat selectable

Display:

16x2 LCD Character Display

Backlight:

Variable brightness blue LED

Calibration and Warranty:

This meter has been calibrated with equipment that is traceable back to the National Bureau

of Standards. Under general use this meter should not require regular calibration, however if

you return the unit to Contacta, the calibration can be checked and supplied with a calibration

curve. Please call to get a service number and check the costs involved.

Contacta, Inc.

332 E. Lakewood Blvd #400, Holland, MI 49424 Phone: (616) 392-3400

Email: [email protected].

This meter is warranted to be free of component, design and manufacturing defects for a

period of one year. Contacta accepts no responsibility for system designs or installations

where this meter was used for test and calibration purposes. Please contact us if you have

any questions. Thank you.

-62dB to +9dB (0dB = 400mA/m)