BRUEL & KJAER 2131 Instruction Manual

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Instruction Manual
Digital Frequency Analyzer Type 2131
033-0178
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2131
A real-time octave and 1/ 3 octave analyzer
featuring almost entirely digital construc-
tion, its operation being based on digit~! fil-
tering, detection .and averaging techniques .
The detected data may be averaged either
exponentially or linearly with a constant av-
eraging time across all channels. Addition-
ally, exponential averaging with a constant
confidence level is available . Display of the
final spectrum formed is on an 11" cali-
brated display screen . "·
The 2131 is equipped with memories en-
abling the comparison of spectra, and has
full analog and digital read-in and read-out
facilities.
T tie"~e
is also extensive 'remote pro-
gramming capability, allowing· ~almost the
complete control of the 2131 from, e.g., a
computer.
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BrUel & Kjcer