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Type 2250 Hardware and Resident Software
Introduction
Type 2250 has generous hardware and software specifications creating an extremely flexible
instrument to cover your current and future measurement and analysis needs, ranging, for
example, from the traditional uses in assessing environmental and workplace noise to industrial
quality control and development. Type 2250 is a technological platform for realising measure-
ment applications in a compact and robust hand-held instrument. Brüel & Kjær is committed
to maintaining an ever-growing range of applications on this platform. As a platform, Type
2250 allows you to choose different combinations of software modules (applications). You can
order a pre-configured instrument from the factory to meet your exact needs, or you can, at
a later date, add functionality to your instrument. Additional applications are delivered as
easily installed licenses and the software can be used in any combination. In this way your
investment in the Type 2250 platform is securely protected and when your need for measure-
ments and analyses expands, Type 2250 can accomodate them.
This data sheet describes the suite of software applications available for Type 2250. All
instruments come with the Sound Level Meter Software (BZ 7222) enabled. This makes Type
2250 into a modern Class 1 Sound Level Meter (SLM). It fulfills the requirements of the latest
standard, IEC 61672–1, as well as earlier standards (see the specifications section for detailed
compliance information). Even in its most basic configuration, Type 2250 is delivered with a
number of pre-defined measurement and display setups tailored to suit specific requirements.
All the features making Type 2250 especially easy and safe to work with are included with
this basic software, for example, annotation of measurements with spoken and written com-
ments and automatic detection of the windscreen. This software, of course, also features a
semi-automatic calibration procedure: it’s as simple as switching on the calibrator, preferably
Type 4231, and tapping the Calibrate button.
Post-processing Software
The software modules are further enhanced by Brüel & Kjær’s post-processing software suite.
All Type 2250 instruments include a dedicated PC software package (Utility Software for
Hand-held Analyzers BZ 5503) which handles data transfer, archiving of data, export of data,
setup, remote display, and software maintenance (for example, license installation and updates).
Separately available post-processing applications include 7815 Noise Explorer™ for data
viewing and archiving, 7820 Evaluator™ for advanced assessment of environmental noise,
and 7825 Protector™ for assessing workplace noise.
Optional Software Modules
The software modules that are used in Type 2250 can be considered as blocks of optional
functionality that can be enabled by license codes. Whichever modules you choose, you can
be assured that a planned growth path is developing continuously with the product.
The optional software modules described in this data sheet are:
• Frequency Analysis Software, providing real-time analysis of the 1/1- and 1/3-octave filter
bands over a wide frequency range with a dynamic range from the noise floor in each
individual band to 140 dB.
• Logging Software, which allows free selection of parameters to log at periods from 1 s to
24 h. Running together with the Sound Level Meter Software all broadband parameters can
be logged. If Frequency Analysis Software is also enabled, spectra can be logged at the
same rates. Results are logged directly to CF or SD memory cards. Logging (or noise
profiling) is used to develop time histories for use in environmental noise as well as
workplace noise assessment.
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