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Logging Software for Type2250-L – BZ-7133

Fig. 5

Display showing part

of a logging profile and

an exclude marker

With optional Logging Software enabled, Type2250-L becomes a versatile

instrument for obtaining time histories. The Logging Software allows you

to select freely among the broadband parameters and log them at

intervals from 1 s to 24 h. At the same time L

, L

and L

Aeq

can be

logged at 100 ms intervals.

If Frequency Analysis Software BZ-7131 or BZ-7132 is enabled, the

Logging Software additionally lets you log spectra at the same 1 s to

24 h intervals.

Logging Software BZ-7133 incorporates a number of features designed

to make difficult field work as manageable as possible.

Some of these features are:

• Five user-definable markers can be set on-the-fly, making it easy to clearly indicate

specific noise sources

• Markers can be set directly on the profile display using the stylus and the touch screen. Simply ‘tap and

drag’ on the part of the profile you want to mark and select a marker from the drop-down list

• Markers can even be set after the fact. The display covers the latest 100 samples (100 s of profile when

logging at 1 s intervals, otherwise more), so in most cases, you can wait for the event (or disturbance) to

end before placing your marker. Alternatively, scroll back in the profile and set your marker

• Browse easily between markers (like signal recordings)

• The profile display can be ‘frozen’ at any time (automatic when you tap the screen)

All markers and annotations are saved with the measurement. No further bookkeeping is required. When

importing data into Measurement Partner Suite BZ-5503 for further analyses, markers, as well as

annotations, are directly accessible on the profile.

Data are stored directly on SD cards or USB flash drive and can be read directly by Measurement Partner

Suite. This means that even large amounts of data are quickly transferred to a PC. Examples of

the required

memory follow (values should be compared to the standard size of the SD cards used, which start at 2 GB):

• Five broadband parameters, no statistics: 1 Mbyte

• All broadband parameters, one 100 ms parameter: 7 Mbyte

• All broadband parameters, one 100 ms parameter, all 1/3-octave spectra: 35 Mbyte

• All broadband parameters, one 100 ms parameter, all 1/3-octave spectra, full statistics: 88 Mbyte

Fig. 6

Hand-held analyzer

measuring outdoor

noise using Outdoor

Microphone

Type 4952, Weather

Station Kit MM-0316-A

and All-weather Case

Type 3535-A

Logging in the Field

For outdoor measurements of environmental noise, your analyzer

may need extra weather protection, as offered by the All-weather

Case Type 3535-A and Outdoor Microphone Type 4952. For

details, please refer to Product Data BP 2251 and Product Data

BP 2099 respectively.

To identify the portions of your measurement that are within

allowable limits for wind speed and direction, use Weather Station

Kit MM-0316-A (two parameters) or MM-0256-A (six parameters).

Noise and weather parameters are captured simultaneously on

the instrument and are available for display and post-processing

in Measurement Partner Suite BZ-5503 back in the office.

Charge Injection Calibration (CIC)

Measurement integrity is vital, particularly if the system is operating unattended. CIC provides a means of

auto-checking the measurement system for 10 s to ensure the system’s continued and accurate operation.

With the Logging software, CIC can be set to run at the beginning and end of measurement.

With the Enhanced Logging Software BZ-7225, CIC can be programmed to run at up to four user-specified

times in each 24 hour period. It may also be activated manually.

These examples use values for 1 s logging periods for 24 h. Other values easily compute from these. Space needed for annotations and

recordings must be added to this.

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