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CHAPTER 10

1/1- or 1/3-octave Frequency Analysis (Optional Module)

111

10.3 Displaying the Results

The Frequency Analyzer measurement screen includes three tabs at the bottom: Spectrum,

Broadband and XL View (Extra Large). The tabs allow you to choose different ways of

displaying the measurement results. All but the Spectrum tab have been covered in Chapter 3.

However, a quick recap is provided below.

The Broadband view shows an instantaneous L

readout, with associated bar graph and four

measurement parameters, followed by two measurement setup parameters. (The first

measurement parameter is displayed in a larger font size for better readability.)

The XL View increases the size of the first parameter readout to a 4 digit, full-screen display

(including decimal point).

The Spectrum view, (which only appears as a tab if Frequency Analysis Software BZ-7223 is

enabled), shows two different spectra parameters being measured simultaneously. In the example

in Fig.10.2, L

ZFmax

and L

are being viewed at the same time.

Note: The Reference Spectrum and Main Spectrum icons indicate which spectrum

belongs to which parameter.

1) Select which spectra to view by tapping the parameter fields in the two lines above the

spectrum display.

These lines also include readouts of the spectrum values highlighted by the spectrum cursor.

Tap the spectrum at the frequency of interest – or just tap anywhere in the spectrum area

and then move the cursor to the position of interest using the Left and Right arrow

pushbuttons.

To the right of the spectrum, two broadband bars (of the same parameters) are also

displayed.

Fig.10.2

Displaying the results

–spectrum screen

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B&K 2250 Light Manual de usuario Pagina 123