BRUEL & KJAER 2131 - User Manual

I Instruction Manual
Digital Frequency Analyzer Type 2131
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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.
+ BrUel & Kjcer

Summary

RMS Detection and Averaging Section

Linear and Exponential Averaging Modes

Compares linear and exponential averaging processes and their mathematical representations.

Instrument Controls Overview

Front Panel Controls

Details controls on the front panel for general operation, averaging, storage, and I/O.

Operation Procedures

Calibration Procedures

Covers procedures for calibrating the analyzer.

General Operation with Analog Input

Details general operation when using analog input signals.

Averaging Functions Overview

Explains the averaging functions available in the analyzer.

Spectrum Storage Functions

Analog Output Procedures

Digital Input Procedures

Digital Output Procedures

Remote Programming Overview

Provides an overview of remote programming capabilities.

Digital Data Transfer and Remote Control via IEC Interface

IEC Interface Address Selection

Remote Programming Codes

Remote Control via Remote Control Socket

Remote Programming Codes (Remote Control Socket)

BRUEL & KJAER 2131 Specifications