Contacta IL-CONTACTA-FSM, User Manual

Page: 9 / 12

9
2
CONTENTS
Meter Design goals
2
Meter Operation Basics 3
Background Noise Tests
4
Program RMS/Peak Levels
5
Evaluating Frequency Response 6
Headphone/Flat spectrum output
7
Line In Flat Response
8
Meter Specifications / Calibration 9
The Field Strength Meter has been designed to ensure that Hearing Loop
Systems be installed and certified to the new IEC 60118-4 standard. When these
standards are met the user expe rience will be equal 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
Meter Design Goals
9
Meter Specifications:
Measurement Range:
True-RMS Crest Factor:
Resolution:
Displayed resolution:
Detection Type:
Sensor:
Direction of Sensitivity:
Calibration:
Frequency Response:
A-Weighted:
Power Source:
Headphone Jack:
Display:
Backlight:
-62dB to +9dB (0dB = 400mA/m)
<3
<0.1dB resolution for levels over –32dB
0.1 dB
True RMS on all features
Pickup Coil
Length-wise of meter’s longer dimension
and Parallel to meter face (Position
noted on Product)
Calibrated at 1,000 Hz (sine) to read 0 dB
at 5.03 mG
Flat ±1dB from 50 Hz to 10,000 Hz Class
2 meter specified in IEC 61672-1
Single 9v Battery & External Power Jack
Output A-Weighted or Flat selectable
16x2 LCD Character Display
Variable brightness blue LED