B&K 2250 Light Bedienungsanleitung PDF herunterladen (Seite 204)

192

Hand-held Analyzer Types 2250 and 2270 – User Manual

17.2.1 Controlling the Measurement

The measurement is controlled in the same way you would control a normal Sound Level

Meter measurement, using Start/Pause , Continue , Back-erase and Reset

pushbuttons, see Chapter 3 for more details.

Note 1: The low-frequency settings require much longer settling times of filters and detectors

for correct results. The instrument automatically takes care of this and waits (after you press

Start ) for the needed settling time for the individual detectors.

Note 2: You cannot start a measurement with G-weighting without using one of the low-

frequency microphones.

17.2.2 Displaying the Results

Tap on the broadband result readouts to select parameters from the Low Frequency or the

Lpeak group to select the G-weighted results (Fig.17.3).

Fig.17.3

Selection of Low

Frequency broadband-

readout results

Note: If you use the Frequency Analyzer module, you will also have the parameter

LXeq(f1-f2), X=A/B/C/Z/G and F1= bottom freq. and F2=top freq. of the frequency bands in

the spectrum. By using G-weighting of the spectrum you would, for example, be able to

readout the parameter LGeq(5 Hz-20 Hz) in cases where that needs to be reported.

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B&K 2250 Light Bedienungsanleitung Seite 204