CMU Audio Generator and Analyzer (Option CMU-B41)
1100.4903.12 4.93 E-10
Test Tones (Multitone Configuration – Tone Def.)
The Tone Def. tab configures the audio test signal generated by the CMU. This signal is composed of
up to 20 test tones with different frequencies and levels. All parameters can be set independently for
the two AF channels 1 and 2.
Fig. 4-43 Multitone Configuration – Tone Def.
Default Settings
The Default All Settings switch assigns default values to all fields in the Tone Def.
tab (the default values are quoted in the command description in chapter 6 of this
manual). Two additional default switches reset all AF Channel One or all AF Chan-
nel Two settings, respectively.
Remote control
DEFault:MULTitone:FILTer ON | OFF
DEFault:MULTitone:AFxChannel:FILTer ON | OFF (x = 1,2)
Level Handling:
Total Level
Total Level defines the sum of the individual voltages of all enabled tones. The
meaning of the total level depends on the Level Selection setting (see below):
If Level Selection is set to Use Separate Levels, a separate AF level (in mV) can be
assigned to each of the 20 test tones.
If Level Selection is set to Use Total Level, a single sum level (also in mV) is de-
fined for the whole multitone signal. This level is evenly distributed among all en-
abled test tones.
The Total Level entered must not exceed the maximum level of the AF generator
quoted in the data sheet.
Remote control
CONFigure:MULTitone:AFxChannel:TDEFinition:TLEVel (x = 1,2)
Level Selection
The Level Selection table section defines how the voltage of each of the test tones
is determined:
Use separate levels for each tone
A separate AF level (in mV) can be assigned to each of the 20
test tones. The Total Level is ignored. It can still be edited for
future measurements where the Level Selection parameter is set
to Manual.
Use Total Level A single sum level (also in mV) is defined for the whole multitone
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