Last updated: December 3, 2008
This measurement is not applicable to GPRS or EGPRS.
This section provides an example of how to make an audio level measurement via the GPIB.
The following procedure assumes that an audio source is connected to the AUDIO IN connectors. See Analog Audio Measurement Description .
10 OUTPUT 714;"SETup:AAUDio:CONTinuous OFF" !Set the analog audio 20 !measurements to single trigger mode. 30 OUTPUT 714;"SETup:AAUDio:EXPECTED:VOLTage 3V" !Set the Expected Amplitude level for 40 !audio input voltage in Vpeak. 50 OUTPUT 714;"SETup:AAUDio:SDIStortion:STATe OFF" !Turn off the SINAD and 60 !distortion measurements since 70 !they are not being used. 80 OUTPUT 714;"SETup:AAUDio:FILTer:TYPE NONE" !Bypass all audio filters. 90 OUTPUT 714;"SETup:AAUDio:DEMPhasis:STATe OFF" !Turn off de-emphasis. 100 OUTPUT 714;"SETup:AAUDio:EXPANDOR:STATe OFF" !Turn off the expandor. 110 OUTPUT 714;"SETup:AAUDio:DETector RMS" !Specify the RMS detector for the 120 !audio measurement. 130 OUTPUT 714;"SETup:AAUDio:TIMeout 3S" !Set a timeout value of 3 seconds 140 !in case the measurement cannot be made. 150 OUTPUT 714;"INITiate:AAUDio" !Start the Analog Audio measurement. 120 OUTPUT 714;"FETCh:AAUDio:INTegrity?" !Query the integrity indicator to 130 !verify that a reliable measurement was made. 140 ENTER 714;Integrity !Enter the returned value into a variable for comparison 150 !with possible integrity indicator values (not shown here). 160 IF Integrity=0 THEN !Only fetch measurement result if integrity indicator is 0. 170 OUTPUT 714;"FETCh:AAUDio:VOLTage?" !Fetch the Audio Level result. 180 ENTER 714;Audio_level !Enter the result into a variable. 190 END IF 200 END
The results returned by this program are: