B&K 2250 Light Manual de usuario descargar pdf (Pagina 137)

CHAPTER 11

Logging (Optional Module)

125

Fig.11.4

Selecting annotations

A drop-down menu appears, select the required function:

• Open note or Play commentary

• Delete annotation

• Move annotation (to the position on the display where the stylus was removed from the

display)

Scale the Y-axis (left-hand vertical scale of the graphical display) by tapping on the scale and

accessing the drop-down menu (as in the Spectrum display):

• Select Auto Zoom to adjust the range of the Y-axis for best fit of the measured spectrum

• Select Zoom In/Zoom Out to adjust the zoom

• Select Scale Up/Scale Down to adjust the full scale value on the Y-axis - or select Auto

Scale to select the best scaling for viewing the spectra – without adjusting the zoom

• Auto Zoom and Auto Scale automatically close the drop-down menu, otherwise, select

Close, tap outside the drop-down list or use the Left Arrow pushbutton to close the menu

11.3.2 Marking Sound Categories

Use this facility to categorise the sound while you are measuring, or while you are observing the

different kinds of sound on the display. This will make it much easier to do the post-processing

and reporting back in the office.

You can mark up to five sound categories on-line. The markers are displayed as horizontal lines

above the sound profile (Fig.11.3). There are two main types of marker:

• An Exclude Marker – this allows you to mark a sound you want to exclude from your

measurement later during post-processing or reporting. (It does not remove any data from

your measurement)

• An Event Marker – this allows you to mark a particular sound of interest during your

measurement

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B&K 2250 Light Manual de usuario Pagina 137