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GRAS RA4800, Instruction Manual

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Instruction Manual  

RA4800  |   3

Contents

Introduction ......................................................................................................................4

Description ........................................................................................................................4

Procedure .......................................................................................................................... 5

Correction values ............................................................................................................. 5

Warranty, Service and Repair.........................................................................................6

Summary of Contents for RA4800

Page 1: ...LI0275 2 November 2020 Instruction Manual GRAS RA4800 Adapter for Sensitivity Verification of Flush and Surface Microphones ...

Page 2: ...made available by GRAS is the copyrighted work of GRAS and is owned by GRAS The content in this document is subject to change without notice GRAS Sound Vibration is not liable or responsible for any errors or inaccuracies that may appear in this document Trademarks Any product names mentioned in this document may be trademarks or registered trademarks of their respective companies and are hereby a...

Page 3: ...Instruction Manual RA4800 3 Contents Introduction 4 Description 4 Procedure 5 Correction values 5 Warranty Service and Repair 6 ...

Page 4: ...he GRAS 42AG Multifunction Sound Calibrator Description The adapter has three main features It has a 1 stud collar for fit with any GRAS calibrator fitted for use with an 1 adapter It has a soft cushion similar to those found on circum aural headphones It creates a closed cavity over the microphone to be calibrated It has four spacers that ensure when the cushion is depressed that the cavity is we...

Page 5: ...A4800 When you have turned on the calibrator and pressed it down over the microphone you must keep it there until the reading on the analyzer is stable Refer to the manual for 42AG for further information about how to operate the calibrator Correction values 250 Hz 1 kHz Accuracy 40LA 0 6 dB 2 1 dB 0 2 dB 40LS 0 6 dB 2 1 dB 0 2 dB 48LA 0 8 dB 3 0 dB 0 2 dB 48LX 1 0 8 dB 3 0 dB 0 2 dB 48LX 4 0 8 dB...

Page 6: ... does not cover products that are damaged due to negligent use an incorrect power supply or an incorrect connection to the equipment Further information about warranty and our repair service can be found at grasacoustics com repair center WEEE directive 2002 96 EC CE marking directive 93 68 EEC Manufactured to conform with RoHS directive 2002 95 EC GRAS Sound Vibration continually strives to impro...

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