GRAS 90CA-S2 Microphone Calibration System, PXI

Introduction

The GRAS 90CA-S2 Microphone Calibration System provides for automated and reliable level and frequency response calibration of measurement microphones. The implemented calibration methods conform with these standards:

• IEC Standard 61094
• ANSI S1.10 – 1966 (R1976)
• IEC Standard 60942
• TEDS Standard IEEE 1451.4

The 90CA-S2 is based on National Instruments’ PXI architecture: NI PXIe-8101 Embedded Controller, including: National Instruments PXIe1071 4-Slot 3U PXI Express Chassis and PXI cards for Control and Data Acquisition.

Features

• Ready-to-use software and hardware
• Accurate calibration hardware
• Automated and computer-controlled calibration process
• Highly reproducible calibration method
• Pre-installed test parameters for GRAS microphones
• Test conditions easily changable
• Auto-generated, customized documentation to print and archive

Applications

• All types of IEC 61094 standardized 1″, 1/2″, 1/4″, and 1/8″ measurement microphones from GRAS and other manufacturers
• GRAS 46xx series standard microphone sets
• GRAS 47xx series flush-mount microphone sets (optional)
• GRAS preamplifiers
• Calibration up to 92 kHz (optional up to 200 kHz)

The system is described in more detail in the Instruction Manual.