B&K 2250 Light Manual de usuario descargar pdf (Pagina 110)

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Hand-held Analyzer 2250 Light – User Manual

• View whether the display of the profile during the measurement is frozen or not. When

is “animated” the display is being updated with new logged data during the measure-

ment. You can freeze the display update by tapping on the icon. This also freezes the icon.

Tap on the icon again to unfreeze the display

• Step forwards or backwards through the logging intervals on all displays, using and

. (The icons are also connected to the profile cursor, so that any corresponding move-

ment backwards or forwards through the intervals in one display will be reproduced in the

other)

Some interaction with the display will automatically freeze and unfreeze the display (only

while measuring):

• Tap the stylus on the profile. This will set the profile cursor and freeze the display update

of the profile. You can move the cursor to any point in the profile by using the left and

right arrow pushbuttons. The profile will be scrolled automatically, if necessary. Unfreeze

by tapping on

• Tap and hold the stylus on the profile display and drag it to the left or right. This will

freeze the display and show two cursors. Next, remove the stylus from the display and a

drop-down menu appears with the possibility of setting or editing a marker or annotation

(see below). Select the required function from the drop-down menu. When the function

has been carried out, the profile unfreezes automatically and progresses as it did before

you tapped on the screen

The logged data are displayed as two profiles. The Profile Overview with the entire profile and

the Profile with 100 logging samples.

The Profile Overview

An overview of the entire profile is displayed across the screen on the topmost part of the graph

area.

The overview is based on L

Xeq,1s

(X = A or B depending on the Broadband (excl. Peak)

Frequency Settings parameter). The Y-axis is auto-zoomed.

When you have logged for more than 4 minutes, then each pixel on the X-axis will cover more

than 1 s. The overview will then display from the minimum L

Xeq,1s

to the maximum L

Xeq,1s

within the interval covered by the pixels on the X-axis.

Tap in the Profile Overview to select the part of the entire profile to display in the Profile

below.

The Profile

The Profile displays a hundred samples of the logged data.

Select which parameter to view by tapping the parameter field in the line above the profile.

Markers are displayed between the profile and the profile parameter. Marker 1 (Exclude) is the

topmost positioned marker. The name of the marker is displayed if the marker overlaps the

cursor position. If a signal has been recorded, then a Sound marker (Marker 6) is displayed

above the profile – the marker covers the exact time of the signal recording.

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