G.R.A.S. 45CC, Instruction Manual

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Contents
Quick Assembly Guide .................................................................................................................................. 4
Introduction ................................................................................................................................................... 5
Overview .................................................................................................................................................................. 5
About This Manual ................................................................................................................................................. 5
The 45CC Configurations ............................................................................................................................ 6
Delivered Items .............................................................................................................................................. 8
45CC-1 Externally Polarized 1/2” Microphones ........................................................................................... 8
45CC-2 Prepolarized 1/2” Microphones ........................................................................................................ 9
45CC-3 60318-1 Ear Simulators and Externally Polarized 1/2” Microphones ................................. 10
45CC-4 60318-1 Ear Simulators and Prepolarized 1/2” Microphones ............................................... 11
45CC-5 Mouth Simulator and Externally Polarized 1/2” Microphones ................................................. 12
45CC-6 Mouth Simulator and Prepolarized 1/2” Microphones .............................................................. 13
45CC-7 Mouth Simulator, 60318-1 Ear Simulators and Ext. Pol. 1/2” Microphones ................................. 14
45CC-8 Mouth Simulator, 60318-1 Ear Simulators, Prepolarized 1/2”Microphones ........................................... 15
45CC-9 Externally Polarized 1/4” Microphones ........................................................................................ 16
45CC-10 Prepolarized 1/4” Microphones ................................................................................................... 17
45CC-11 Mouth Simulator and Externally Polarized 1/4” Microphones ............................................... 18
45CC-12 Mouth Simulator and Prepolarized 1/4” Microphones ............................................................. 19
General Description ................................................................................................................................... 20
Front View .............................................................................................................................................................. 20
Side View ................................................................................................................................................................ 21
Rear View ............................................................................................................................................................... 22
Ear Plate Assemblies ........................................................................................................................................... 23
The Fittings for Microphone Mounting ........................................................................................................... 23
The Microphone Holder ...................................................................................................................................... 24
The Positioning Guide ......................................................................................................................................... 24
Assembly and Adjustments ..................................................................................................................... 25
Assembling the 45CC ......................................................................................................................................... 25
Mounting the Ear Plate Assemblies ................................................................................................................. 25
Mounting the Mouth Simulator ........................................................................................................................ 26
Adjusting the Headband Holder Height ......................................................................................................... 27
Adjusting the Horizontal Position .................................................................................................................... 27
Adjusting the Positioning Guides .................................................................................................................... 28
Calibration ................................................................................................................................................... 29
Technical Specifications ........................................................................................................................... 31
Warranty, Service and Repair................................................................................................................... 32
Instruction Manual GRAS 45CC Headphone Test Fixture | 3