B&K 2250 Light Manual do Utilizador descarregar pdf (Página 186)

174

Hand-held Analyzer Types 2250 and 2270 – User Manual

The pop-up window can be de-activated for the rest of the measurement session. To activate it

again, you will have to reload the template or restart your analyzer. This automatic check is

deactivated when the Tone Assessment parameter is set to Off in the Setup screen.

To reset all the relevant parameters to the default setup, tap the OK button. (The default setup

includes preset parameters that comply with the selected standard. These are described in Table

15.1.) To measure with the settings you set up manually, tap the Cancel button.

Note 1: Even if you have set the Tone Assessment parameter to On (Setup screen), the

calculation is not carried out until the Tone parameter is selected above the spectrum.

Note 2: You may find the Template Explorer (accessed from the Main Menu ) useful to

save your own measurement setup.

15.4.4 Signal Recording

If a valid license for the Signal Recording Option BZ-7226 is present, it is possible to record

the sound while measuring. (Refer to Chapter 13 for information about the Signal Recording

Option.)

Note: When analyzer recordings are to be used for re-analysis on a PC, be sure to select

Automatic Gain Control parameter to Off, under the Signal Recording parameters, and select

the Recording Quality parameter to High.

Table 15.1

Default parameters

used by the automatic

measurement setup

check

Setup Parameter Default Value

Selected standard: ISO 1996-2, Annex D

Adjustment 3 dB

Last band in low frequency range 125 Hz

Last band in middle frequency range 400 Hz

Level difference low 15 dB

Level difference middle 8 dB

Level difference high 5 dB

Selected standard: Italian Law (DM 16-03-1998)

ISO 226 1987 Free-field

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