B&K 2250 Light Uživatelský manuál stáhnout pdf (Strana 201)

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Chapter 17

Low Frequency Option BZ-7234

Low Frequency Option BZ-7234 enables

• G-weighting parameters in accordance with the standards ISO 7196:1995 and

ANSI S1.42–2001 (R2011) using Brüel & Kjær Low Frequency microphones

• Measurements of Building Vibration parameters using Brüel and Kjær Low Level acceler-

ometer in accordance with the standards ISO 8041:2005 and DIN 45669-1:2010–09

• 1/3-octave frequency analysis down to 0.8 Hz (1/1-octave down to 1 Hz)

This option can be used together with the following modules:

• Sound Level Meter Software BZ-7222

• Frequency Analyzer Software BZ-7223

• Logging Software BZ-7224

• Enhanced Logging Software BZ-7225

Note 1: Check the About screen to see whether you have a license to run the Low Frequency

Option. (To access the About screen, tap the Help icon then tap About.)

Note 2: If you have purchased your analyzer together with the software application(s), then the

relevant license(s) comes pre-installed on the analyzer.

Note 3: If you purchased a separate software application for your analyzer, then you have to

install the license on the analyzer. This is done using BZ-5503, please consult the online help

included with the BZ-5503 software for instructions on how to install a license.

17.1 Sound Measurements and G-weighting

This section describes how to measure G-weighting parameters. See the G-weighted frequency

response in Fig.17.1.

1 2 ... 196 197 198 199 200 201 202 203 204 205 206 ... 331 332

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B&K 2250 Light Uživatelský manuál Strana 201