B&K 2250 Light Manual de usuario descargar pdf (Pagina 12)

GPS Annotations

A text annotation with GPS information can be attached (Latitude,

Longitude, Altitude and position error). Requires connection to a GPS

receiver

Data Management

PROJECT TEMPLATE

Defines the display and measurement settings. Setups can be locked

and password protected

PROJECT

Measurement data stored with the project template

JOB

Projects are organised in jobs

Explorer facilities for easy management of data (copy, cut, paste, delete,

rename, view data, open project, create job, set default project name)

Software Specifications – 1/1-octave Frequency Analysis Software for 2250 Light BZ-7131 and 1/3-octave

Frequency Analysis Software for 2250 Light BZ-7132

The specifications for BZ-7131 and BZ-7132 include the specifications

for Sound Level Meter Software for 2250 Light BZ-7130. BZ-7131 and

BZ-7132 add:

Standards

Conforms with the following National and International Standards:

• IEC 61260 (1995–07) plus Amendment 1 (2001–09), 1/1-octave Bands

and 1/3-octave Bands, Class 0

• ANSI S1.11–1986, 1/1-octave Bands and 1/3-octave Bands, Order 3,

Type 0 –C

• ANSI S1.11– 2004, 1/1-octave Bands and 1/3-octave Bands, Class 0

Frequency Analysis

CENTRE FREQUENCIES

1/1-octave Band Centre Frequencies (BZ-7131 only):

16 Hz to 8 kHz

1/3-octave Band Centre Frequencies (BZ-7132 only):

12.5 Hz to 16 kHz

MEASUREMENTS

X = frequency weightings A, B, C or Z

Spectra for Display and Storage:

Spectra for Display Only:

Single Values

MEASURING RANGES

When using Microphone Type 4950:

BZ-7131, 1/1-octave:

• Dynamic Range: From typical noise floor to max. level for a pure tone

signal at 1 kHz: 5.9 to 140 dB

• Linear Operating Range: In accordance with IEC 61260:  22.9 dB to

140 dB

BZ-7132, 1/3-octave:

• Dynamic Range: From typical noise floor to max. level for a pure tone

signal at 1 kHz: 1.0 to 140 dB

• Linear Operating Range: In accordance with IEC 61260:  20.1 dB to

140 dB

MEASUREMENT DISPLAYS

Spectrum: One or two spectra superimposed + A/B and C/Z broadband

bars

Table: One or two spectra in tabular form

Y-axis: Range: 5, 10, 20, 40, 60, 80, 100, 120, 140 or 160 dB. Auto

zoom or auto scale available

Cursor: Readout of selected band

Software Specifications – Logging Software for 2250 Light BZ-7133

The specifications for BZ-7133 include the specifications for Sound Level

Meter Software for 2250 Light BZ-7130. BZ-7133 adds:

Logging

MEASUREMENTS

Measurement data logged at pre-set periods into files on:

• SD Card

• USB Memory Stick

Logging Period: From 1 s to 24 hr with 1 s resolution

Fast Logging: L

and L

Aeq

can be logged every 100 ms, irrespective

of logging period

Broadband Data Stored at each Logging Interval: All, or up to 10

selectable broadband data including weather data and L

Aeq,T,mov

Broadband Statistics Stored at each Logging Interval: Full

distribution, or none

Spectrum Data Stored at each Logging Interval: All, or up to three

selectable spectra (license for BZ-7131 or BZ-7132 required)

Logging Time: From 1 s to 31 days with 1 s resolution

Measurement Total: For the logging time, in parallel with logging: All

broadband data, statistics and spectra (license for BZ-7131 or BZ-7132

required)

Automatic reboot and resume of operation in case of power failure

MEASUREMENT DISPLAYS

Profile: Graphical display of selectable measurement data versus time.

Fast display of next or previous marker; Profile overview of entire

measurement

Y-axis: Range: 5, 10, 20, 40, 60, 80, 100, 120, 140 or 160 dB. Auto

zoom or auto scale available

X-axis: Scroll facilities

Cursor: Readout of measurement data at selected time

MARKERS

Five user-definable markers for on-line marking of noise sources or

events anywhere in the profile.

Markers are set using the stylus on the touch screen, or the three marker

pushbuttons

Xeq

XSmax

XFmax

XSmin

XFmin

SIL PSIL SIL3

Xeq

(f1-f2)

where f1 and f2 are frequency bands in the spectrum.

NR NR Decisive Band

RC RC Classification

NCB NCB Classification

NC NC Decisive Band

Loudness Loudness Level (BZ-7132 only)

1 2 ... 7 8 9 10 11 12 13 14 15 16

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