Agilent Technologies 8960 Series Reference Guide

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S:\Hp8960\E1962B CDMA 2000\Pi Release\Reference Guide\Chapters\cdma2000_prog_swaudio.fm
Programming a Swept Audio Measurement
Programming a Swept Audio Measurement
This section provides an example of how to make swept audio measurements via the GPIB.
The following example assumes that some device under test is connected between the test set’s AUDIO OUT
and AUDIO IN ports. The default audio level measurement, and the optional SINAD and distortion
measurements, are performed at each frequency point in the sweep.
1. Configure the swept audio measurement using the SETup subsystem.
2. Start the measurement using the INITiate subsystem.
3. Use the FETCh subsystem to obtain the audio analyzer’s results for all points in the sweep.
Programming Example
10 OUTPUT 714;”SETup:SAUDio:FREQuency:STARt 300 Hz” !Start the frequency
20 !sweep at 300 Hz.
30 OUTPUT 714;”SETup:SAUDio:FREQuency:STOP 4 kHz” !Stop the frequency
40 !sweep at 4 kHz.
50 OUTPUT 714;”SETup:SAUDio:FREQuency:POINts 5” !Make measurements at 5 frequencies
60 !spaced evenly between the start and stop frequencies.
70 OUTPUT 714;”SETup:SAUDio:SETTling 1.5 ms” !Set a settling time of
80 !1.5 milliseconds.
90 OUTPUT 714;”SETup:SAUDio:VOLTage:AMPLitude 1 V” !SET the audio generator
100 !voltage to 1 volt peak.
110 OUTPUT 714;”SETup:SAUDio:DETector PEAK” !Select the peak detector for
120 !the audio analyzer.
130 OUTPUT 714;”SETup:SAUDio:FILTer TBPass” !Select the AF analyzer’s 100 Hz bandwidth
140 !band pass filter for making the measurements. The center frequency for the filter
150 !automatically tracks the AF generator’s frequency.
160 OUTPUT 714;”SETup:SAUDio:PEAK:VOLTage 1 V” !Set the expected peak voltage
170 !at the AUDIO IN port.
180 OUTPUT 714;”SETup:SAUDio:SDIStortion:STATe ON” !Turn on the SINAD
190 !and distortion measurements.
200 OUTPUT 714;”SETup:SAUDio:CONTinuous OFF” !Set the swept audio
210 !measurement to single trigger mode.
220 OUTPUT 714;”SETup:SAUDio:TIMeout 5 S” !Set a measurement timeout of
230 !5 seconds in case the measurement cannot be made.
240 OUTPUT 714;”INITiate:SAUDio” !Start the swept audio measurements.
250 OUTPUT 714;”FETCh:SAUDio?” !Query the audio level and distortion results.
260 ENTER 714;Integrity,Lev1,Dist1,Lev2,Dist2,Lev3,Dist3,Lev4,Dist4,Lev5,Dist5 !Enter the
270 !returned integrity value, and the level and distortion values
280 !for each of the five measurement points, into variables.
290 OUTPUT 714;”FETCh:SAUDio:SINAD?” !Query the SINAD results.
300 ENTER 714;Sinad1,Sinad2,Sinad3,Sinad4,Sinad5 !Enter the 5 returned SINAD values
310 !into variables.
320 END

Agilent Technologies 8960 Series Specifications

General

Brand	Agilent Technologies
Model	8960 Series
Category	Test Equipment
Language	English