B&K 2250 Light Manual do Utilizador descarregar pdf (Página 166)

154

Hand-held Analyzer Types 2250 and 2270 – User Manual

Fig.14.5

Selecting the bands for

serial measurements

Left: Selecting the band

for serial measurement

Right: The arrow is

pointing to the “s” symbol,

which indicates the

selected frequency band

Note: A small s appears above the selected frequency bands (Fig.14.5).

4) When you have selected the frequency bands you want to re-measure, press the

Start/Pause pushbutton.

The analyzer will then start at the lowest selected frequency band, generate noise at this band, make

the measurement and automatically step to the next selected band. This will continue until all selected

bands have been measured.

5) Press the Save pushbutton to save and merge the bands with the measurement you have

already done (be sure to select the right position before saving).

Combine Parallel and Serial Measurements in an Automated Sequence

You can speed up the measurement process if you start by investigating whether you need to

use serial measurements at certain frequency bands, or not. If you need to measure some bands

serially, then you can select Measurement Control from the Setup screen, and set the

Measurement Mode to Combined. Then select the bands you want to measure serially (see

above).

Press the Start/Pause pushbutton to make a normal parallel measurement and then do the serial

measurements – all in an automated sequence.

14.2.6 Annotating Projects and Positions

While using the Reverberation Time Software you can annotate the Reverberation Time project using

the normal method of adding annotations to a project. The annotations can then be viewed by tapping

on the Annotations icon or tapping the Main Menu icon and selecting Explorer from the list of

options. See section 3.5.

However, your project can contain a lot of measurements, one per position, so you can annotate

any position in the project. Signal recordings are automatically attached as annotations to the

positions. Annotations at positions are managed in the Overview display – described in the

next section.

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B&K 2250 Light Manual do Utilizador Página 166