B&K 2250 Light Uživatelský manuál stáhnout pdf (Strana 197)

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CHAPTER 16

2-channel Option BZ-7229

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When the same type of transducers are used by both channels (e.g., two microphones or two

accelerometers) or if you only display data from one channel, then the spectrum display is the

standard spectrum display (Fig.16.7).

Fig.16.7

Single-channel spectrum

When the transducers at the two channels are of different types (e.g., a microphone and an

accelerometer), the scaling of the two spectra can be set individually for easy comparison. Ch.1

will use the standard Y-axis at the left of the spectrum and Ch.2 will have its own Y-axis to the

right of the spectrum (instead of the broadband values). Tapping on the Ch.2 Y-axis reveals the

same possibilities for zooming and scaling the spectrum as for Ch.1. See examples in Fig.16.8.

Fig.16.8

Displaying the results with different scaling for each channel

16.5.3 Saving Results

Measurements are saved and can be opened later in the same way as described for the Sound

Level Meter project in Chapter 3.

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