3M QC-10 User Manual

Thank you for choosing the Quest Technologies, a 3M company, to 
meet your calibration needs.  To ensure the accuracy of your sound 

measuring instrumentation, 3M Quest models QC-10 and QC-20 
Calibrators provide quick, precise calibration.  The instruments 

generate a stable acoustic signal at a controlled frequency and 
amplitude to verify the accuracy of sound level meters and noise 
dosimeters.   

 
The purpose of this manual is to provide the user with the necessary 
information to operate the QC-10 and QC-20 Sound Calibrators.  The 

entire manual should be read to fully understand the many features 
this instrument offers. 

 
This manual is not all inclusive and cannot cover all unique 
situations.  In addition, no warranties are contained in this manual 

except as described under the warranty section.   
 
 

 
 

 
 
 

 
 
 

 
 

 
 
 

Example of QC-20 with Cal adaptor 

Cal adapter  
Used with ¼” and ½’ microphones 

Switches used to set levels 
and turn on/off calibrator.