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Chapter 1 261
GPIB Command Dictionary
MEASure subsystem
:DEC:AMPS|TACS:DATA?
This command queries the decoded data for the voice channel.
Syntax
MEAS:DEC:AMPS:DATA?
Example
MEAS:DEC:AMPS:DATA? !returns a quoted string reporting the
decoded data obtained from the voice channel measured by the
signaling unit.
For example, the Signaling Decoder reads the voice channel
and returns the data as depicted below:
09A15386CDA286604938B128063FD5F8
030078ECDBED872DABF0D308A1718FDB
685461FC0C2130410982E2DAE08C0300
54D0D9B450C08231AFD909BED8C840C0
The information received is the same as that displayed in the
Data (hex) field of the SIGNALING DECODER screen.
Screen/field equivalent
MEAS:DEC:AMPS:DATA? reads the Data (hex) measurement field on
the SIGNALING DECODER screen when the Mode field is set to
AMPS-TACS, and the Channel field is set to Voice.
:DEC:DTMF:LOW:FREQuency:ABSolute <meas cmnd>
:DEC:DTMF:LOW:FREQuency:ABSolute?
These command set/query the frequency of the low tone in the DTMF
pair. The MEAS:DEC:DTMF:LOW:FREQ:DISP ‘Freq’ command must
be used to display the absolute frequency of the low tone.
Syntax
MEAS:DEC:DTMF:LOW:FREQ:ABS
!See “Multiple Real Number Setting Syntax” on page 282
MEAS:DEC:DTMF:LOW:FREQ:ABS? !returns up to 20 real values
Screen/field equivalent
MEAS:DEC:DTMF:LOW:FREQ:ABS? reads the Lo Tone column on the
SIGNALING DECODER screen. The Mode field must be set to DTMF and
the upper subfield of the Lo Tone field must be set to Freq.