G.R.A.S. 45CA User Manual

G.R.A.S. SOUND & VIBRATION
CONTENTS
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 Main Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 WhichCongurationtoUse ..........................................5
2 Delivered Components ............................................6
3 IMPORTANT! Basic Assembly - Safety instructions ....................7
4 CongurationwithPressureMicrophone,
1" Type 40EN or ½" Type 40AP/40AD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.1 AssemblingMicrophoneandPreamplier ...............................8
4.2 Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.3 Mounting the Assembly into the Test Fixture ............................10
4.4 Acoustic Isolation Testing ...........................................14
4.5 Typical Application Setup ...........................................15
5 CongurationwithIEC60318EarSimulatorRA0039. . . . . . . . . . . . . . . . . . 16
5.1 EarSimulator/PreamplierAssembly .................................16
5.2 Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.3 Completing the Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.4 Mounting Assembly into Test Fixture ..................................19
5.5 Typical Application Setup ...........................................22
6 CongurationwithIEC60711EarSimulatorRA0045orRA0045-S1 . . . . . . 23
6.1 AssemblingEarSimulatorandPreamplier .............................23
6.2 Mounting the Assembly into the Test Fixture ............................24
6.3 Calibrating IEC 60711 Ear Simulator Coupler RA0045 .....................27
6.4 Mounting the KEMAR Pinna .........................................28
6.5 Typical Application Setup ...........................................29
7 TechnicalSpecications .........................................30
8 WhattoOrder ..................................................31

G.R.A.S. 45CA Specifications

General

Brand	G.R.A.S.
Model	45CA
Category	Protection Device
Language	English