Audio Generator and Analyzer (Option CMU-B41) CMU
1100.4903.12 4.84 E-10
Default Settings
The Default Settings switch assigns default values to all settings in the Filter tab
(the default values are quoted in the command description in chapter 6 of this man-
ual).
Remote Control
–
Bandpass
The Bandpass section sets the bandwidth of the fixed band pass (see Fig. 4-37
above).
Bandwidth (AC Coup.) Bandwidth to be used if the AF path coupling is set to AC
(see Path Coupling on page 4.82)
Bandwidth (DC Coup.) Bandwidth to be used if the AF path coupling is set to DC
The CMU provides a broad selection of bandwidths with lower cutoff frequencies
between 0 Hz and 300 Hz and upper cutoff frequencies between 250 Hz and
21 kHz (see command description in Chapter 6).
Note: If the AF Path Coupling is set to DC, the audio analyzer receives the
complete AF input signal including a possible DC component. To avoid
measurement inaccuracies, band pass filters with a lower cutoff
≥
6 Hz
are available only.
Remote control
CONFigure:AFANalyzer:<Applic>:FILTer:BPASs:ACCoupling
CONFigure:AFANalyzer:<Applic>:FILTer:BPASs:DCCoupling
Weighting
The Weighting section selects a weighting filter to be switched into the AF signal
path after the fixed band pass (see Fig. 4-37 above).
C-Message Swith on C-message weighted filter
CCITT Swith on CCITT weighting filter
Off No weighting filter
Remote control
CONFigure:AFANalyzer:<Applic>:FILTer:WEIGhting
Bandpass
(variable)
The Bandpass (variable) section sets the center frequency and the bandwidth of
the variable band pass.
Note: The variable band pass settings affect the results for AC Voltage
(Peak) 2 and AC Voltage (RMS) 2 only (see Fig. 4-37 above). These
quantities are available in remote control but not displayed in the Ana-
lyzer/Generator menu.
Remote control
CONFigure:AFANalyzer:<Applic>:FILTer:VBPass:CFRequency
CONFigure:AFANalyzer:<Applic>:FILTer:VBPass:BWIDth
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