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7 Menu
7.4.3 Setup
Customized settings are saved in the setup, sparing users the task
of calling up the desired functions every time they are required.
Place the cursor on the desired item and press the
Enter key.
7.4.3.1 Filter limits
Use this setting to define the filter settings to be used for manual
filtering (see chapter 7.4.3.1).
Default setting: If you enter a
sound velocity for a measurement
which is lower or higher than 700 m/s, the correlator uses the
following values:
Lower limit / Hz
Upper limit / Hz
< 700 m/s
5
500
Synthetic material / plastic
> 700 m/s
0
3000
Metal
It plays no role whether the sound velocity is manually entered or
whether appropriate pipe parameters are selected.
7.4.3.2 Filter basis
You can use this menu option to change how the frequency curve
of the
filter setting is represented.
Coherence
z
This function is used to indicate similar frequencies.
Cross spectrum
z
This function is used to indicate the cross spectrum of both
channels.
Spectrum, CH 1
z
Used to indicate the frequency spectrum of
channel 1.
Spectrum, CH 2
z
Used to indicate the frequency spectrum of
channel 2.
