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 measurement 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 measurements 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 comments 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.

• Enhanced Logging Software, providing continuous monitoring and logging of Periodic Reports in addition to the features of Logging Software. Parameters like L_dn and L_den are calculated.

• Sound Recording Option, which provides you with a uniquely versatile facility for attaching samples of the actually measured signal to your measurements. This option works with all software modules. The recording uses the measurement transducer, while voice annotations (standard in all modules) use a separate commentary microphone.

Easy, Safe and Clever

The instrument design was inspired by the requirements of users participating in in-depth workshops around the world and the results of our research showed that besides being fun to use, the new generation of analyzer should be easy, safe and clever. Type 2250 meets these requirements in many ways (all the features below are included with every configuration):

• Type 2250 is easy to use - its robustness, lightness and ergonomic design make it easy to grip, hold and operate single-handedly. Ingenious software ensures you can start measuring quickly. You will never feel lost in the menu structure, in every situation you are just one tap or press of a pushbutton away from where you started. The backlit pushbuttons are easy to use and the large, colour touchscreen is visible in both sunlight and in difficult lighting conditions depending on the colour-scheme chosen. Type 2250 incorporates a simple user interface that can be controlled by using the stylus or the pushbuttons. It has an easy and intuitive data storage concept and on-line guidance is included to help you get familiar with the instrument quickly.
• Type 2250 is safe to use - it was built for use outdoors and in difficult environmental conditions, so it is powered by rechargeable Li-Ion batteries (with high capacity) and the casing incorporates non-slip materials to ensure a safe grip. The software guides you safely through each measurement and status indicators show measurement progress, even at a distance. You can document your measurements on the spot using on-the-fly voice or text annotations. These are automatically attached to your measurement and transferred with your data to the PC, with all the housekeeping being taken care of. So, you will always know which results go where. Type 2250 includes a multi-user login facility, which allows preferences, setups and data for different users . or different tasks . to be kept separate.
• Type 2250 is clever - it incorporates various smart features for field use, including: specially positioned backlit pushbuttons to allow vital start-stop-save actions to be done by feel and at night, single-handedly; a separate built-in commentary microphone, giving you the option of recording your personal comments while measuring and automatically attaching them to your on-going measurement; .traffic light. indicators to give you a quick indication of your measurement.s status . visible at a distance; a calibration history, allowing you to document your measurement.s validity; semi-automatic calibration procedure built-in; and the presence of a windscreen is automatically detected and corrected for by built-in filters.