B&K 2250 Light Manual do Utilizador descarregar pdf (Página 131)

CHAPTER 11

Logging (Optional Module)

119

Fig.11.1

The Setup screen

5) Under the Measurement Control parameters, set the Measurement Time and Logging

Period as required. Set Synchronize with clock to Yes if you want the logging to

synchronise with whole minutes or hours. For example, if Logging Period is set to

1 minute and you start the measurement at 8:12:33, then the first logging interval will be

from 8:12:33 to 8:12:59 (27 seconds), the second will be from 8:13:00 to 8:13:59 (60

seconds), etc. Set Synchronize with clock to No if you want every logging interval to be the

specified Logging Period exactly. Set Charge Injection Calibration to On if you want to

validate the complete measurement chain by performing CIC at the start and end of the

logging measurement, refer to section 5.10.

6) Under the Logged Broadband parameters, choose which broadband parameters you want

to log in accordance with the Measurement Control parameters. You can choose to log Full

Statistics per Logging Period or not. You can also choose to log all the measured Broadband

Parameters or a Selected number of parameters. If you choose Selected then you can

specify up to 10 parameters.

7) The Logged Broadband (100 ms) parameter allows you to log L

Aeq

, with an elapsed time

of 100 ms and a logging period of 100 ms, L

and/or L

, with a logging period of

100 ms, irrespective of the other logging parameters.

8) The Logged Spectrum

parameter allows you to choose which spectra to log. You can

specify to log All, None or up to 3 Selected spectra. You can also choose to log Full

Spectral Statistics per Logging Period or not.

*. Requires Frequency Analysis Software BZ-7223

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B&K 2250 Light Manual do Utilizador Página 131