
224
Hand-held Analyzer Types 2250 and 2270 – User Manual
A.2 Frequency Settings
Table A.2 Frequency Setting parameters
*
Parameter Values Comment
Low Frequency Option Off
On
Set to ON to enable the Low Frequency setting,
Very Low, and the G and Wm frequency weightings.
Requires Low Frequency Option BZ-7234.
Low Frequency
*
Normal
Extended
Very Low
Use this parameter to extend the low frequency of
the broadband measurements and the frequency
analysis. However, be aware that the
measurements will be more sensitive to very low
frequency noise such as wind noise.
Low Frequency = Normal:
Frequency analysis
*
:
1/1-octave: 16 Hz – 16 kHz
1/3-octave: 12.5 Hz – 20 kHz
Low Frequency = Extended:
Frequency analysis
†
:
1/1-octave: 8 Hz – 16 kHz
1/3-octave: 6.3 Hz – 20 kHz
Low Frequency = Very Low:
Frequency analysis
*
:
1/1-octave: 1 Hz – 16 kHz
1/3-octave: 0.8 Hz – 20 kHz
(Requires Low Frequency Option BZ-7234)
For microphone input this setting is only possible for
microphone Types 4193 and 4964 including Low
Frequency Adaptor UC-0211.
Broadband (excl. Peak) Microphone:
A,Z
A,C
B,Z
B,C
A,G
Accelerometer:
Linear
Linear, Wm
Linear, Wmb
Direct:
Linear
All broadband parameters (except L
peak
) are
measured simultaneously with two different
frequency weightings – select the weightings here
The settings G, Wm and Wmb are available for Low
Frequency = Extended or
Very Low
Requires Low Frequency Option BZ-7234
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