Disk Drive Analysis Package

Disk Drive AnalysisPackageFor Tektronix TDS 7000Series OscilloscopesFeatures and Benefits• Guzik Hardware Accelerator Cardintegrated with Tektronix oscilloscopeprovides real-time signal analysis anddata processing• 8Gbits/s complete PRML channelanalysis with Tektronix TDS7404• Digital PRML with PR4, EPR4, E 2 PR4and custom Variable Target modes withautomatic PRML channel optimization• Digital PRML measurements includingBit Error Rate, SAM, Sample ValuesDistribution• Industry-standard Disk Drivemeasurements including Parametric(TAA, PW, Asymmetry), NLTS, SNR• Unique Pulse Profile Parametricmeasurements with high noise immunity• Wide range of programmable digitalfilters including low-pass and high-passIIR filters and 32-tap FIR equalizer• Drive-specific triggers and gating simplifyand speed up your work• Convenient and intuitive Windows-basedUser Interface optimized for touchscreenapplications• Integration with Guzik RWAs andSpinstandsApplications• Characterization of PRML channels indata storage and telecommunications• Characterization and testing of magneticheads and disk drives• IDEMA measurements including TAA,PW50, SNR, Resolution and AsymmetryMaximum PerformanceFig.1. Sample Values Plot, EPR4Disk Drive Analysis package fromGuzik Technical Enterprises deliversfast disk drive measurements on digitaloscilloscopes. The package includesthe Guzik Hardware Accelerator cardand Guzik software environmentinstalled on the Tektronix oscilloscope.The 4 GHz analog bandwidthcombined with 20 GS/s sampling rateof Tektronix TDS7404 oscilloscopemakes possible to perform PRMLchannel analysis up to 8Gbit/s.The unique design and strategiclocation of Guzik Hardware Acceleratorcard gives possibility to perform mosttime-critical measurements byhardware and in real-time with thespeed of the oscilloscope acquisition.Highly optimized Guzik graphicalengine is capable to display largeamounts of graphical data withoutslowing down the system.VersatilityThe Disk Drive Analysis packagedelivers wide range of disk driveoriented measurements includingParametric, NLTS, SNR and PulseProfile. It integrates a highlyflexible Digital PRML Channel withPR4, EPR4, E 2 PR4, and variabletarget PRML modes. The heart ofthe PRML channel is the digitalclock and gain recovery withprogrammable bandwidth andcustomizable Viterbi decoder. ThePRML channel also includes awide range of programmabledigital filters like low-pass andhigh-pass IIR filters and 32-tapFIR equalizer.Disk Drive Analysis applicationprovides semi-automatic optimizationof Digital PRML Channel, auto-setup ofproduct parameters, disk drive specificoscilloscope triggers andmeasurement gating.1 Disk Drive Analysis Package Datasheet

PRML MeasurementsThe Disk Drive Analysis package supports the widerange of PRML measurements and PRML channelperformance evaluation tools:• Semi-automatic PRML channel optimizationprocedure, which includes the isolated pulseshape capture, pulse reshaping and equalizeradjustment (see Fig. 2)• Sample Values plot to display PRML samplesat the output of the clock recovery over thetime (see Fig.1)• Sample Values Distribution plot with MSEcalculation to display the synchronizedhistograms of PRML samples (see Fig.3)• Comparator Error plot with BER calculation todisplay recovered user data along withreference data in NRZ format• SAM Data plot to display Viterbi metric marginsover the time• SAM Histogram plot to display the histogram ofViterbi margins• SAM Plot with SAM BER calculation to displaythe margins distribution• TAA and Error Rate Track Profile (BathtubCurve). Guzik RWA and spinstand is requiredfor this test.Fig. 2. PRML Channel Optimization,(Pulse Profile Capture and Reshaping)Easy to UseThe Disk Drive Analysis package provides intuitiveWindows-based GUI optimized for oscilloscopetouch-screen. For added convenience it supportssecond external monitor and front-paneloscilloscope knobs.Digital Oscilloscopes SupportedOscilloscope ModelGuzik DSPHardwareAcceleratorPlatformOscilloscopeSamplingRateTektronix TDS7104 ? 10GS/sTektronix TDS7154 ? 20GS/sTektronix TDS7254 ? 20GS/sTektronix TDS7404 ? 20GS/sFig. 3. Sample Values Distribution Plot, EPR42 Disk Drive Analysis Package Datasheet

SpecificationsPRML Max Bit RateAcquisition LengthPRML ModesPRML MeasurementsPRML Channel OptimizationParametric MeasurementsSNR MeasurementsNLTS MeasurementsPulse ProfileTrack ProfileAcquisition TriggerMeasurement GatingParametric MeasurementsAccuracy (For RepetitivePatterns):TDS7104:TDS7154:TDS7254:TDS7404:Up to 32 MSamples*2Gbit/s3Gbit/s5Gbit/s8Gbit/sVariable Target, PR4, EPR4, E 2 PR4Sample Values Plot,Sample Values Distribution Plot, MSE,Comparator Error Plot, Bit Error Rate (BER),SAM Data Plot, SAM Histogram Plot, SAM BERAutomatic and semiautomatic based on signal quality monitorTAA, TAA+, TAA-, TAA Asymmetry, TAA Resolution,PW, PW+, PW-, PW Asymmetry,RMSAutocorrelation SNR,TAA/RMS (Guzik) SNR,RMS/RMS SNRNLTS Dipulse Extraction,NLTS AutocorrelationNoise suppression up to 15dB SNRRepetitive patterns requiredCombined TAA profile and Error Rate profile(Guzik RWA and Spinstand required)Manual,Sector,Read Gate,Custom modesManual,By oscilloscope cursors,By external Read GateTAAPWGuzik SNRTAA Resolution ± 3.0%± 0.5% (down to 15dB SNR)± 1.0% (down to 15dB SNR)± 0.2dB (down to 15dB SNR)* Limited only by oscilloscope’s available record length and current channel configuration, up to 32MSamples onTektronix TDS7404.Contact InformationGuzik Technical Enterprises2443 Wyandotte Street,Mountain View, CA, 04043Voice: 1 (650) 625-8000Fax: 1 (650) 625-9325www.guzik.comCopyright © 2002, Guzik Technical Enterprises. Allrights reserved. Guzik products are covered by U.S.and foreign patents, issued and pending. Informationin this publication superseded that in all previouslypublished material. Specification and price changeprivileges reserved. Guzik is a registered trademarksof Guzik Technical Enterprises, Tektronix and Tek areregistered trademarks of Tektronix, Inc. All othertrade names referenced are the service marks,trademarks or registered trademarks of theirrespective companies.3 Disk Drive Analysis Package Datasheet