B&K 2250 Light, Руководство пользователя

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CHAPTER 4
Getting to Know Your 2250 Light
27
• Level Average with Exchange Rates 4, 5 or 6 (example: LavS5)
• Weather data (requires a weather station connected)
• GPS data (requires a GPS device connected)
Instantaneous Measured Parameters
• Instantaneous Time-weighted Sound Levels (L
p
– example: L
AF
)
• Sound Pressure Levels (max levels once per second – example: L
AF
(SPL))
• Instantaneous Peak Sound Levels (example: L
Cpeak,1s
)
• Instantaneous Weather data (requires a weather station connected)
• Instantaneous GPS data (requires a GPS device connected)
Note: See Appendix B for a comprehensive list of all parameters.
Sound Level Meter Software for 2250 Light, BZ-7130, incorporates a simple user interface,
which is easy to learn and uses intuitive data storage and recall. Comprehensive security
features means no loss of data, even on accidental power-off. Sound Level Meter Software for
2250 Light, BZ-7130, also provides connectivity between your PC and other sound analysis
software.
This hand-held analyzer platform includes a range of optional software modules, that are
enabled through easily activated software license keys. The combination of software modules
and innovative hardware makes the instrument a dedicated solution for performing all your
high-precision measurement tasks. The following optional software modules are covered in this
manual:
• 1/1-octave Frequency Analysis Software for 2250 Light BZ-7131
This software module allows real-time frequency measurements in 1/1-octave bands,
making it a simple matter to, for example, select suitable hearing protection, qualify
noise from heat and ventilation systems and assess tonality
• 1/3-octave Frequency Analysis Software for 2250 Light BZ-7132
This software module is similar to the previous module, except that it allows real-time
frequency measurements in 1/3-octave bands
• Logging Software for 2250 Light BZ-7133
This software module allows logging of broadband and spectral data
a
to obtain a time
history for later analysis, for example, for use in environmental noise as well as work-
place noise assessment. It allows free selection of up to 10 parameters to log at periods
from 1 s to 24 h. Results are logged directly to CF or SD memory cards
• Signal Recording Option BZ-7226
This option allows recording of the input signal (typically sound) in either 16-bit or 24-
bit resolution during measurement. The signal recording can be controlled manually or
by using an external trigger signal. The recorded signal can be played back and listened
to (hardware version 4 only) using optional Earphones HT-0015. The signal is recorded
directly to the SD memory cards (or CF card if using hardware versions 1 – 3)
a. Requires 1/1-octave Frequency Analysis Software for 2250 Light BZ-7131 or 1/3-octave Frequency
Analysis Software for 2250 Light BZ-7132