B&K 2250 Light Manual de usuario descargar pdf (Pagina 136)

124

Hand-held Analyzer Types 2250 and 2270 – User Manual

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 the icon

• 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 exactly the time of the signal recording.

You can browse through markers using the buttons in the profile.

The whole, or any part of the signal recording can be played back, once or repetitively – see

Chapter 12 for details.

To the right of the profile, the broadband parameter L

is displayed and updated regardless of

the measurement status and the display freeze status.

Annotations are displayed below the profile as icons. To select an annotation, tap and hold the

stylus at one side of the icon, just above it, then drag the stylus to the opposite side of the icon

(so it looks like the example in Fig.11.4) and remove the stylus from the display.

1 2 ... 131 132 133 134 135 136 137 138 139 140 141 ... 331 332

Comentarios a estos manuales

Sin comentarios

B&K 2250 Light Manual de usuario Pagina 136

Comentarios a estos manuales

Relacionado con productos y manuales para De medición, control y control B&K 2250 Light