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Signal Recording Option – BZ-7226
Signal Recording Option BZ-7226 works with all other applications. In all cases it allows you to make
recordings of the actual measured signal. Recordings are automatically attached to the measurement and
kept with it, even after transfer of the data to a PC.
One purpose of the Signal Recording Option is to let you record the measurement signal in order to identify
and document sound sources. Automatic gain control is available to allow for any signal level. For example:
• The measured L
Aeq
at 57 dB, did it actually stem from the rather distant compressor, or from other
sources such as nearby birds or traffic? Not necessarily easy to evaluate on site, very difficult to
document convincingly later. If the signal is recorded: No discussion
• Is it really true that this noise is impulsive and should be penalised accordingly? If the signal is recorded:
There may still be an argument, but it is then based on facts
Another important use of signal recording is to record the signal for later processing, such as analysing an
engine run-up or a machinery process cycle.
With Sound Level Meter Software BZ-7130 and Frequency Analysis Software BZ-7131, Signal Recording
Option BZ-7226 lets you do the following:
• Record all or parts of the measured signal giving rise to specific results, levels and spectra
• Set up your instrument so that recording can be set to start automatically when the measurement is
started, or you can initiate recordings manually
With Logging Software BZ-7133, signal recording can be associated with the Event Marker using the Event
key or an external signal (for example, from a hand switch; see Ordering Information): The sound during the
event is recorded and attached to the appropriate part of the profile
In all of the above cases the maximum duration of recordings can be set (the analyzer is only limited by
available storage on the memory card currently in use). Recording signals may require large amounts of
storage; therefore, Signal Recording Option BZ-7226 allows you to decide on the trade-off between storage
needed and recording quality (sampling rate).
The Signal Recording Option offers a choice of 24- or 16-bit recording. You can use 24-bit recording to
capture the full 120 dB dynamic range of Type 2250/2270, which is convenient for later signal analysis. You
can use 16-bit recording to consume less memory; however, this requires selecting the level range for
recording (or using the automatic gain control).
Post-processing Software
Measurement Partner Suite BZ-5503, in its standard configuration, is included with your hand-held analyzer.
This configuration provides data archive, preview and export capabilities as well as software maintenance
and remote online display.
In addition to the standard configuration, valuable data analysis and post-processing functionalities are
available in a growing suite of optional modules. Measurement Partner Suite offers these modules on a
subscription basis: Only pay for what you need, when you need it. For more information on Measurement
Partner Suite BZ-5503, please consult Product Data BP 2430.
Additional post-processing applications (available separately) include:
• Noise Explorer™ Type7815 for data viewing and archiving
• Evaluator™ Type7820 for advanced environmental noise assessment
• Protector™ Type 7825 for workplace noise assessment
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