Programming a Decoded Audio Measurement
Last updated: May 8, 2002
This measurement is
not
applicable to GPRS.
This section provides an example of how to make a Decoded Audio (DAUDio) measurement. The following procedure assumes that an active link is established between the test set and the mobile station. See
Establishing an Active GSM Link with the Mobile Station
.
-
Configure decoded audio measurement parameters using the SETup subsystem.
-
Setup the audio source to stimulate the mobile station with a pulsed audio signal.
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Start the decoded audio measurement using the INITiate subsystem.
-
Use the FETCh? command to obtain decoded audio measurement results.
Programming Example
10 OUTPUT 714;"SETUP:DAUDIO:CONTINUOUS OFF" ! Configures the decoded audio
20 ! measurement to single trigger mode.
30 OUTPUT 714;"AFGENERATOR:PULSE:STATE ON" ! Audio signal must be pulsed.
40 OUTPUT 714;"AFGENERATOR:VOLTAGE:SAMPLITUDE 100MV"
50 OUTPUT 714;"AFGENERATOR:FREQUENCY 2.1KHZ"
60 OUTPUT 714;"SETUP:DAUDIO:FILTER:SFREQUENCY 2.1KHZ"! Specifies the tunable
70 ! bandpass filter frequency
80 ! and set the filter state to on.
90 OUTPUT 714;"INITIATE:DAUDIO"
100 OUTPUT 714;"FETCH:DAUDIO?" ! Fetch the decoded audio results.
110 ENTER 714;Ingerity,Decoded_audio
120 END
Returned Values
The measurements returned by this program are:
-
Integrity
returns the measurement
Integrity Indicator
(0 means a successful measurement with no errors).
-
Decoded_audio
returns the decoded audio measurement results in percent (%).
