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86 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.