Introduction - 3M 1200 User Manual

Introduction

1. INTRODUCTION
The 3M Quest models 1200 and 2200 and their remote versions
(1200R/2200R) are Impulse and Integrating Sound Level Meters for
measuring frequency weighted and time averaged SPL, weighted or
unweighted Peaks or frequency weighted Leq. Applications include
laboratory, industrial, community and military, measurement or analysis.
The models 1200 and 2200 are easy-to-use hand held meters with an LCD
display that provides a numerical readout. They are housed in an R.F.
shielded injection molded case. The meter is operated with simple slide
switches. An output jack on the bottom of the meter is provided for con-
necting to peripheral devices such as chart recorders, oscilloscopes, audio
recorders, etc.
The model 1200 provides Type 1 accuracy for precision measurements
while the model 2200 provides Type 2 accuracy for general field survey
work. As both meters are operationally identical, this manual will refer
only to the model 1200 except where appropriate.
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Figure 1a. Model 1200/2200
1200/2200 Sound Level Meter Operator's Manual