Agilent Technologies E6380-90073 Manuale Utente

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Chapter 1
 
GPIB Command Dictionary
AFG2|ENCoder subsystem
:DTMF:STANdard <string>
:DTMF:STANdard?
These commands set/query the standard applied to the encoded data. 
The standard affects the types of frames that can be sent, the range of 
valid channel numbers, the encoding of the frame data, and the 
interpretation of received frames.
Syntax
AFG2:DTMF:STAN ‘Bell’
AFG2:DTMF:STAN?
Screen/field equivalent
AFG2:DTMF:STAN controls the 
Standard
 field on the SIGNALING 
ENCODER screen when the 
Mode
 field is set to 
DTMF
.
:DTMF:TWISt <real number>
:DTMF:TWISt?
These commands set/query the ratio of amplitudes (in dB) between the 
high frequency and low frequency tone in each DTMF pair. A positive 
twist value indicates a higher amplitude for the high frequency tone. A 
negative value indicates a higher amplitude for the low frequency tone.
Twist and pre-emphasis affect the relative levels of the high and low 
tones within each symbol (tone pair). See the “Twist and Pre-emphasis” 
in the Reference Guide for details about the interactions of twist and 
pre-emphasis.
This command utilizes the “Real Number Setting Syntax” on page  299, 
but does not use the :INCR or :STATe commands.
Syntax
AFG2:DTMF:TWIS <real number>
AFG2:DTMF:TWIS?
Screen/field equivalent
AFG2:DTMF:TWIS controls the 
Twist
 field on the SIGNALING 
ENCODER screen when the 
Mode
 field is set to 
DTMF
.