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Contents
Introduction .................................................................................. 5
Using This Manual ..................................................................................... 5
Introduction to Calibration ............................................................... 6
What is Acoustic Calibration? ...................................................................... 6
Which type of calibration do I need? ............................................................ 7
How often should I calibrate? ...................................................................... 8
The Concept of the 90CA Microphone Calibration System ..................... 9
Applications ............................................................................................ 10
The Basic Principles of 90CA: Microphone Calibration in Four Easy Steps ....... 11
Functional Block Diagram ......................................................................... 12
Hardware and Software for Level Calibration ............................................... 13
Hardware and Software for Frequency Calibration ........................................ 14
Delivered Components .................................................................. 16
Assembling and Connecting the Hardware ........................................ 17
Workspace for the Assembly ...................................................................... 17
PXI: Connections for Test of Microphones (Ext. Pol. and Prepol.) .................... 19
PXI: Connections for Test of Externally Polarized Microphone Sets ................. 21
PXI: Connections for Test of Prepolarized Microphone Sets ........................... 23
PCI: Connections for Test of Microphones (Ext. Pol. and Prepol.) .................... 25
PCI: Connections for Test of Externally Polarized Microphone Sets ................. 27
PCI: Connections for Test of Prepolarized Microphone Sets ........................... 29
Assembling the 90CA .............................................................................. 30
Settings for the Instruments included in the System ..................................... 32
Precautions for certain Types of Microphones .............................................. 32
Powering on the 90CA ............................................................................. 32
Mounting the Microphones ........................................................................ 33
System Verification...................................................................... 37
Initial verification of the system setup ......................................................... 37
Day-to-day Verification ............................................................................. 37
Introducing the Calibration Software SW0002 .................................. 38