fft000000020002  FastTrig Audio Analyzer lDISTORTTRIG+0TRIG+100TRIG+200TRIG+400 TRIG+1000 TRIG+2000HANNTIGHTNOISERESPwW+FLOOSEAMPL1AMPL2CH1PHASECH2PHASEFREQRESDGENAMPL SPECTFREQACQTIME TRIGCRITERIAWINDOW SPECTPROC WAVEWARNSTRIGSRC FREQCRRCTRAMPL-1AMP1 Channel 1 input signal magnitudePp? J(*+)MRAMPL-2AMP2 Channel 2 input signal magnitudePp? J(*+)MPPHASE-1PHA1'Channel 1 phase (frequency domain only)A=PHASE-2PHA2Phase difference 1-2ARFREQ RESFREQRSFrequency resolution for W&FY@p= ף?T DGEN AMPLGENAMPDigital generator amplitude??mSWP FREQFREQ'Spectrum frequency (used in graph only)@? 8X TIMETIME"Waveform time (used in graph only)@п?\) TRANSFORMTrigger criteria0$FFT Window: No Window or Hann Window@<MEASURE#Frequency domain display processing3'Gen waveform & freq correction warningsFACQUIRE#Trigger Source [+ pre-delay in ms] [& Frequency Error Correction Sample rateICDIO option not present -- A/D or DGEN are only valid input settings@:DIO option not present -- D/A is only valid output settingLFERROR: At least one input channel must be enabled in order to acquire71ERROR: DSP program does not support EXTERN sweepsLFWarning: Waveform load overrun -- file is longer than selected bufferNHWarning: Waveform load underrun -- file is shorter than selected buffer; 5FATAL ERROR: DSP PROGRAM REQUIRES DIO or MEM OPTION " FATAL ERROR: Stack Overflow . (ERROR: Xform size setting out of bounds : 4ERROR: FREQRS may only be a sweep source-2 selection:4ERROR: GENAMP may only be a sweep source-2 selectionE?ERROR: Waveform file is not of proper type for selected bufferB<Warning: Ch1 generator waveform should be loaded before ch2B<Warning: Ch1 & Ch2 generator waveforms have not been loadedOIERROR: TRIG & Freq Correction modes require Ch1 & Ch2 generator waveformsOIGen waveform frequencies too close for triggering or frequency correction/)ERROR: Waveform load not of valid length>8ERROR: Ch1 & Ch2 generator waveforms not of equal lengthC=WARNING: Not enough tones in waveform for reliable triggering=7ERROR: Excessive tones in waveform for proper operationDEBUG: lobe width even.(ERROR: Frequency correction data overrunLFERROR: Frequency resolution setting conflicts with requested frequency0*Warning: Frequency correction out of range   NMultiple sinewave test signals are generated and analyzed for high speed audioKsystem testing. These tests include frequency response, distortion, noise,*interchannel phase, and stereo separation.IThe top two panel display fields are real time peak amplitude displays toassist in setting levels.OFASTTRIG can recognize and capture short bursts of signal by comparing incomingGtest signals to downloaded generator waveforms. The expected generatorIwaveform must be downloaded to both 1G and 2G buffers in order to captureHsignals. 1G must be loaded before 2G, and both signals must be the sameKlength. The analyzer acquisition length will be twice the generator bufferNlength. The F9 function key causes FASTTRIG to begin comparing input signals.OOnce acquired and transformed, data can be re-analyzed for different parameterswith the Alt-F6 key.LExternal dual D/A converters driven from a digital output of System One DualKDomain are necessary for stereo separation testing. 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