Agilent Technologies 35670A User Manual

To measure sound pressure level
The Agilent 35670A allows you to measure sound pressure level (SPL) using one of
three banks of filters. The filter spacing and bandwidth in these three banks are: one
octave (full), one-third octave, and one-twelfth octave. But before you can measure
SPL, you must calibrate all the microphones you will use, as shown in the preceding
task.
1 Initialize the analyzer.
Complete the preceding task, “To calibrate a microphone.”
Press [
Active Trace
], then press [
A
] if you are measuring with one microphone, [
AB
]if
you are measuring with two, or [
ABCD
] if you are measuring with three or four.
Press [
Meas Data
][
ALL CHANNELS
][
PWR SPEC CHANNEL *
] to assign one
microphone’s output to each trace.
2 Set each calibrated microphone in front of an acoustic energy source.
3 Specify the measurement parameters.
Press [
Freq
], then press [
1/1 OCTAVE
], [
1/3 OCTAVE
], or [
1/12 OCTAVE
] to select filter
spacing and bandwidth.
Press [
START
] <number> <unit>, then press [
STOP
] <number> <unit> to select the
range of frequencies you want to measure.
Press [
Input
][
ALL CHANNELS
][
CH* AUTO UP ONLY
].
If you want to display A-weighted SPL, press [
FRONT END CH* SETUP
], then press
[
A WT FLTR ON OFF
] to highlight ON.
Option AY6
Agilent 35670A
Measuring Sound Operator's Guide
3-6

Agilent Technologies 35670A Specifications

General

Brand	Agilent Technologies
Model	35670A
Category	Measuring Instruments
Language	English