Audio Generator and Analyzer (with Option CMU-B41)  CMU 
1100.4903.12 6.70  E-10 
CONFigure:AFANalyzer[:PRIMary]:CONTrol:DISTortion[:FREQuency] <Frequency> Frequency
CONFigure:AFANalyzer:SECondary:CONTrol:DISTortion[:FREQuency] <Frequency> 
<Frequency> 
Description of parameters  Def. value  Def. unit  FW vers. 
20 Hz to 20000 
Hz 
Reference frequency for distortion measurement  1000  Hz  V2.10 
Description of command 
This command determines the reference frequency for the harmonic distortion measurement. 
 
CONFigure:AFANalyzer[:PRIMary]:CONTrol:COUPling <Coupling>  AF Path Coupling
CONFigure:AFANalyzer:SECondary:CONTrol:COUPling <Coupling> 
<Coupling> 
Description of parameters  Def. value  Def. unit  FW vers. 
AC | 
DC 
AC coupling of AF path 
DC coupling of AF path 
AC ([:PRIMary] channel) 
DC (:SECondary channel) 
– V3.05 
Description of command 
These commands determine the AF path coupling for measurements using the AF analyzer. In firmware versions 
<3.05, the commands are replaced by two equivalent CONFigure:...COUPling commands.  
 
 
 
Subsystem AFANalyzer...:FILTer (Filter) 
The subsystem AFANalyzer:...FILTer configures the input path of the AF analyzer. The subsys-
tem corresponds to the Filter tab in the Analyzer Configuration menu. The input path of the AF analyzer 
is as shown below: 
 
Weighting
filter
Variable
band pass
AC Voltage (Peak) 1
AC Voltage (RMS) 1
AC Voltage (Peak) 2
AC Voltage (RMS) 2
Signal from
F IN (
[:PRIMary]
 AF analyzer) 
UX 1 (
:SECondary
 AF analyzer)
Fixed
band pass
 
Fig. 6-1 AF analyzer input path configuration 
 
CONFigure:AFANalyzer[:PRIMary]:FILTer:VBPass:CFRequency <Center> Frequency
CONFigure:AFANalyzer:SECondary:FILTer:VBPass:CFRequency <Center> 
<Center> 
Description of parameters  Def. value  Def. unit  FW vers. 
20 Hz to 20000 Hz  Center frequency of band pass  1000  Hz  V2.12 
Description of command 
This command determines the center frequency of the variable band pass.