9/29/09 Performing a Sound Level Measurement 9-1
APPENDIX
9
Performing a Sound Level
Measurement
Due to the many features of the System 824 and the variety
of measurements it is capable of performing, there is a great
deal of instructive material in the preceding chapters. In this
chapter, to assist the new user in performing a basic sound
level measurement, we work our way through the specific
steps necessary to perform an accurate measurement.
Configuration of the System
The System 824 should be configured as shown in Figure 1-
1 on page -1-10 with the preamplifier connected to the front
of the instrument and the microphone connected to the end
of the preamplifier. If desired, a microphone extenstion
cable may be connected between the preamplifier and the
body of the 824. For more details on the positioning of the
824 and the permitted length of the extension cable, see
”Positioning the Meter” on page 9-7.
Selecting a Measurement Mode
The System 824 can measure sound pressure level using
using any of the following modes:
• Integrating Sound Meter (ISM) measures sound level
parameters, which are stored manually by the operator.
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