B&K 2250 Light, Руководство пользователя

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CHAPTER 3
Making Your First Measurement
17
3.2.3 Set the Sound Level Meter Project Template
After initialisation, the screen shown in Fig.3.1 appears:
Fig.3.1
Initial sound level meter
screen
1) Check that the SOUND LEVEL METER Project Template is displayed at the top of
the screen, see Fig.3.1. If not, use the stylus to tap on the bar at the top of the screen to
reveal a drop-down list and select
SOUND LEVEL METER from the list, see Fig.3.2.
Fig.3.2
Changing the project
template
2) Tap on Measurement Mode in the view area and set to Manual , see Fig.3.3.
Note: The bar-graph showing the sound pressure level L
AF
is now live. This is because
L
AF
is an instantaneous value, always available for display. Other parameters, such as
L
Aeq
is a measured value that needs to be averaged over a period of time and cannot be
displayed before you have started a measurement using the Start/Pause pushbutton .