CMU  Audio Generator and Analyzer (with Option CMU-B41) 
1100.4903.12 6.75  E-10 
Multitone Measurements (MULTitone) 
The subsystem MULTitone measures the level of an audio test signal comprising up to 20 test tones. 
The subsystem corresponds to the measurement menu Multitone and the associated popup menu Mul-
titone Configuration. 
In analogy to the AFGenerator and AFANalyzer subsystems reported above, the Multitone meas-
urement provides two independent circuits: 
•  In the first audio channel (subsystem MULTitone:AF1Channel...), the audio signals are applied 
to the connectors AF OUT (output, AF generator signal) and AF IN (input) on the CMU front panel. 
The first audio channel corresponds to the Multitone menu, application AF Chan. One, and the as-
sociated configuration menu.  
•  In the second audio channel (subsystem MULTitone:AF2Channel...), the audio signals are 
applied to the connectors AUX 2 (output, AF generator signal) and AUX 1 (input) on the CMU front 
panel. The second audio channel corresponds to the Multitone menu, application AF Chan. Two, 
and the associated configuration menu.  
With the exception of the input and output connectors, the two audio circuits are identical. All remote 
control commands are analogous.  
 
 
Measurement Control – Subsystem MULTitone 
The subsystem MULTitone controls the measurement. It corresponds to the softkey AF Chan. One in 
the measurement menu Multitone  and some of the associated hotkeys. 
 
INITiate:MULTitone:AF1Channel  Start new measurement 
⇒
 RUN 
INITiate:MULTitone:AF2Channel 
ABORt:MULTitone:AF1Channel  Abort running measurement and switch off 
⇒
 OFF 
ABORt:MULTitone:AF2Channel 
STOP:MULTitone:AF1Channel  Stop measurement after current stat. cycle 
⇒
 STOP 
STOP:MULTitone:AF2Channel 
CONTinue:MULTitone:AF1Channel  Next measurement step (only stepping mode) 
⇒
 RUN 
CONTinue:MULTitone:AF2Channel 
Description of command  FW vers. 
These commands have no query form. They start and stop the measurement, setting it to the status 
indicated in the top right column. 
Note:  The single tone AF generator must be switched off before a multitone measurement is 
started. See note in section Audio Generator and Analyzer (with Option CMU-B41) 6.64.  
V3.0 
 
CONFigure:MULTitone:AF1Channel:EREPorting <Mode> Event Reporting
CONFigure:MULTitone:AF2Channel:EREPorting <Mode> 
<Mode> 
Description of parameters  Def. value  Def. unit  FW vers. 
SRQ | 
SOPC | 
SRSQ | 
OFF  
Service request 
Single operation complete 
SRQ and SOPC 
No reporting 
OFF –  V3.0 
Description of command 
This command defines the events generated when the measurement is terminated or stopped (event reporting, 
see chapter 5).