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1. Audio precision Testing for Optimal Results Po rta b le 0 ne Audio Precision Quality in a Portable Test Set Unmatched Portable Performance Unparalleled Precision Low Distortion Analog System THD N 80 kHz BW 92 dB Digital Distortion THD N lt 140 dB High Analog Bandwidth Signal Generation to 120 kHz Low Noise 22 Hz 22 kHz lt 114 dBu A weighted lt 118 dBu Wide Input Voltage Range Input Range 80 mV 250 V in 10 dB steps Flat Response 20 Hz 20 kHz 0 05 dB Low Crosstalk Input lt 120 dB Output lt 110 dB Low Jitter Generator lt 0 8 ns Analyzer lt 1 6 ns Portable One Unparalled Precision in a Portable Package The Portable One family of audio test instruments at home on the bench or rugged in the field With thousands of units sold you ll find the Portable One family of audio analyzers in opera tion around the world in maintenance engineering and production facilities Whether in broadcast communications bench or production use Portable One offers a complete easy to use audio test set housed in a rugged case ready for almost anything With twelve differ ent measurement functions selectable at the push of a button Portable One is comprehen sive while remaining user friendly Its popularity is no less due to its outstanding performance specifications yet Portable One is as affordable as lower performing test sets Analog Only or full Dual Domain Analog and D
2. 5 3 of f Filter Shape THD N Measurements Fundamental Range 0 02 to 45 of sample rate 10 Hz 22 0 kHz at 48 0 ks sec lt 138 dBFS 22 Hz 400 Hz 2 pole Butterworth 15 kHz 20 kHz 6 pole elliptic low pass ANSI IEC A weighting CCIR QPK CCIR RMS SMPTE DIN IMD Function with option P1 IMD Test Signal Compatibility 40 250 Hz and 3 kHz 20 kHz in 1 1 to 4 1 ratio Amplitude modulation products of the HF tone lt 0 0001 10 Residual THD N High pass Filters Low pass Filters Weighting Filters IMD Measured Measurement Range Accuracy 1 dB per SMPTE RP 120 1983 DIN 45403 Residual IMD 0 dBFS lt 0 0001 120 dB 60 7 kHz or 250 8 kHz Frequency Measurements ange 5 Hz to 47 of sample rate Phase Measurement Related Measurement Ranges 7A 180 90 270 or 90 270 deg Accuracy 2 0 deg 20 Hz 20 kHz Resolution 0 1 deg BITTEST Measurement Measurement Compatible with random mode of Audio Precision BITTEST DIGITAL INTERFACE MEASUREMENTS AES EBU Impairments Real Time Displays Input Sample Rate 0 002 20 PPM internal ref 0 0001 1 PPM external ref Measures status propagation uo the AES EBU output to the in Range is 0 192 frames reso rene 60 ns Output to Input or Reference Input to Input Delay AES EBU Input Voltage Balanced 400 mV to 10 24 Vpp 10 50 mV Unbalanced 100 mV to 2 56 Vpp 10 30 mV Ta pe
3. Two filter selections are provided GEN SINE 1 0000 Fr 397 00 Hz UA HTD HP 30 Hz RMS for the jitter meter a 700 Hz high pass fil ter used for residual jitter measurements ac cording to AES standards and a 50 Hz high pass filter for jitter response measurements Other Interface Signal Measurements Portable One Dual Domain measures key dig ital I O interface parameters in addition to jitter including sample rate AES signal voltage frame delay through the device un der test and delay of the input signal rela tive to a house sync reference frame or block CRATE GILE Loz G DELAY ia 4800 0 t2 2 98 Upp 24 30 ns GEN SINE 1 0000 Fr 1 0000 kHz REF ISTAT INP 24hbit OUT BLOCK Flexible Interface Impairment Simulation Flexible digital interface testing is vital for troubleshooting and verifying performance of digital audio at the systems level Porta ble One Dual Domain allows simulation of real world transmission and interface prob lems JITTER GENERATOR DPJITISINE 0 201 UI 1 002 kHz Vary the digital output signal to test the ac ceptance range of your digital devices Set Sample rate anywhere from 28 8 kHz to 99 9999 kHz not just at the three standard frequencies Inject jitter amplitude from 0 UI to 2 5 UI 415 ns at 48 kHz in 0 01 UI 1 6 ns steps or 0 UI to 25 5 UI 4150 ns in 0 1 UI 16 ns steps Injected jitter frequency can be set from 10 Hz to 38 8 kHz not just to a fixed
4. amp Independent Analog amp Digital Generators Often necessary for dual domain testing You may for example drive the inputs of an A D converter with the low distortion ana log sine while simultaneously driving the converter s digital reference house sync input with the digital generator Then add jitter or vary the sample rate to see the ef Turn on Portable One Audio Testing to Meet Your Challenges JITTER LR Low I J FREG I 0 484 u1 4 99 Upp 400 46 Hz fect on THD N IMD or noise Competitive units can drive only one domain at a time or use their analog generator to create the digital jitter and thus can t make this mea surement at all Separate Digital Inputs amp Outputs Three 1 0 formats XLR BNC and optical Toslink All are completely separate from the analog audio XLR connectors permit ting both digital and analog generators to operate simultaneously No cable changes required to go from A D to D A to D D to A A testing of a digital tape machine for example Digital amp Analog Monitors Listen to all measurements in the digital and analog do mains over the ree internal loud F l i phones In the analog domain monitor sig speaker or a pair of head nals or distortion In the digital domain the incoming signal distortion or jitter can all be monitored Jitter Meter Portable One Dual Domain includes jitter measurement in nanoseconds or in Unit In tervals
5. 00 k 150 200 pF Nominally 100 kQ 150 200 pF Selectable 600 Q 1 70 dB 50 Hz 20 kHz lt 120 dB or 1 uV whichever is greater Accuracy 1 kHz SMPTE DIN IMD Function with option P1 IMD Test Signal Compatibility 40 250 Hz and 3 kHz 20 kHz in 0 1 to 8 1 ratio Amplitude modulation products of the HF tone lt 0 0025 20 IMD Measured Measurement Range Accuracy 1 dB per SMPTE RP 120 1983 DIN 45403 Residual IMD lt 0 0025 92 dB 60 7 kHz or 250 8 kHz Wow amp Flutter Function Test Signal Compatibility Accuracy 4 Hz Detection Modes 2 80 kHz 3 35 kHz 5 of reading 0 002 IEC DIN NAB JIS Residual W F lt 0 005 Weighted lt 0 01 Unweighted DIGITAL SIGNAL GENERATOR DIGITAL OUTPUT CHARACTERISTICS Output Formats AES EBU per AES3 1992 SPDIF ETAJ Optical 28 8 kHz 99 9999 kHz 0 002 20 PPM lockable to external reference Sample Rates Sample Rate Accuracy Word Length 16 to 24 bits even values Sine Wave 10 Hz to 47 of sample rate 22 56 kHz at 48 ks s Sample Rate 2 typically 0 006 Hz at 48 ks sec Frequency Range Frequency Resolution Flatness 0 001 dB Residual Distortion 0 00001 140 dB Square Wave Frequency Range Frequencies available 10 Hz to 1 6 sample rate f 4096 to f 6 in even integer divisors SMPTE DIN IMD Waveform with option P1 IMD Upper Tone Rang
6. 000T with a Portable One Dual Domain at one end and a System Two Cascade or 2700 Series dual domain instrument at the other Other Digital Convenience Functions Digital Status bytes are displayed and set in high level English DERROR Ghl ERROR GB DATA Gh 0 0 6FEA40hex 24a g HI Soe OCLIUEBI FE ERROR GAlERROR GE DATA G 0 0 SA0DG0hex 24 eee Cee Cee ACTHALEIT Error flag displays for confidence lock cod ing parity errors and the validity bit are in cluded Additional active bit and actual bit displays on the panel help determine the word length of the incoming signal and detect stuck bits Digital Dither Portable One Dual Domain includes a full complement of dither selections triangular and rectangular probability distribution functions white or shaped spectrum Dither amplitude is automatically set to the proper value for the output word length and the selected probability function Sample amp Frame Sync Synchronize Portable One Dual Domain sam ple and frame sync to the digital reference house sync input Digital Pass Mode Sends the input digital audio content to the output while modifying status bytes validity bit etc Portable One Dual Domain can thus be used as a problem solver be tween incompatible equipment Signal Monitoring Outputs A digital signal appropriate for syncing an external oscilloscope may be derived from the input sample rate output sample rate input blo
7. AY measurement Se lection of analog and digital inputs is clearly indi cated on the front INPUT panel with LED xy am a OUTPUT legends Portable One makes graphs B e a a of swept measure ments in real time on the high contrast back lit LCD display including both frequency and amplitude sweeps Hard copy high resolution graphs compact screen sized graphs or tabular data 20 00 AEU 2 0 00 ABU 10 00 Hz100 000 kHz listings can be made from your Portable One to laser or ink jet printers at the touch of a button Bargraphs can display measure ments ranging from AC mains power line ALEVEL GA LEVEL GE FREQ G 4 356 W 4 566 V 999 69 Hz 1 000 uV AUTORANGE 10 000 U distortion to digital interface error rate and nearly everything in between Sepa rate buttons and knobs provide independent control of frequency and amplitude The buttons provide large and medium steps decade and 1 3 octave steps for frequency 10 dB and 1 dB for amplitude with knobs for finer resolution When FREQUENCY not otherwise used the setting knobs and buttons also provide a convenient human interface for scroll ing display cursors and for entry of other settings and data Stereo Portable One Dual Domain is a true ANALYZER INPUTS two channel instru ment Both analog PORTABLE ONE DUAL DOMAIN l and digital level functions measure Pe aiii both inputs s
8. CILLATOR SECONDARY READING DETECTOR IMD HF TONE GENERATOR SUMMATION AGEN SINE 1 000 u 1 000 LCD DISPLAY output TRANSFORMER SIGNAL AMPLIFIER ALEVEL E LEVEL A FREQ B 2 332 VY 1 096 VY 1 0003 kHz Generator Waveform Trigger LOCK GENERATOR a JITTER i JITTER AES EBU GENERATOR MODULATOR RANSMITTER M sitar Signal U a D A E Cc CHANNEL SOURCE IMPEDANCE OUTPUT ANALOG ATTENUATOR OUTPUT BALANCING CHANNEL B ANALOG TRIGGER OUTPUT FUNCTION MONITOR INPUT MONITOR SPEAKER HEADPHONE MONITOR MONITOR DtoA DIGITAL TRIGGER Input Clock OUTPUT SPDIF OUT DRIVER i Ni AES EBU Output TUES OPTICAL P1DD Portable One Dual Domain digital and analog Audio Test System with GPIB interface Options and Accessories for Portable One Instruments P1 IMD SMPTE DIN intermodulation distortion measurement and generation analog and digital P CAS Protective soft carrying case with shoulder strap and internal external pockets RAK P1 Rack mount shelf for Portable One Plus Access or Portable One Dual Domain MAN P1PA Additional Portable One Plus Access operator s manual one included with instrument MAN P1DD Additional Portable One Dual Domain operator s manual one included with instrument MAN ATS488 Additional GPIB manual for Portable One Plus Access or Portable One Dual Domain one
9. EST The dBg unit dB referred to the present an alog generator amplitude is useful for com pression threshold measurements or rapid response sweeps at several different abso lute levels as well as for input to output gain loss measurements 600 Q Analog Input Terminations are indi vidually switchable for each channel of the analog analyzer Comprehensive Analog and Digital Functions Digital Performance Portable One Dual Domain uses a true DSP implemented analyzer for digital measure ments which results in 130 dB residual THD N 0 01 dB flatness and 140 dBFS re sidual noise Other mixed signal test sets in THD N GER LEYVEL GE AUTO T GE 131 4 dB 1 0001 kHz the same price range have no digital ana lyzer but use a D A converter and an ana log analyzer These architectures bottom out at 70 dB to 84 dB residual THD N 12 14 bit effective performance and 0 1 dB flatness With today s best A D convert ers measuring 108 dB to 112 dB THD N their real performance is in CJ ent Lie i ae visible to these A competitive instrument lacking a DSP analyzer produces false THD N mixed signal analyz readings red trace from a popu lar A D converter but both the ers buried under Portable One Dual Domain and the Audio Precision 2700 Series graph 7 j the true performance of the con the analyzer aes verter from 5 dB to 28 dB lower and distortion Toor ee Separate
10. NALS Generator Analog Sync Output Digital Sync Output Analyzer Input Monitor Analyzer Reading AUDIO MONITOR Power Output Typically 1 watt GENERAL ENVIRONMENTAL Power Requirements de arte Ls 10 6 50 60 Hz 50 V 0 C to 40 C Operating 20 C to 60 C Storage Temperature Range Humidity 90 RH to at least 40 C non condensing EMC Complies with 89 336 EEC CISPR 22 class B and FCC 15 subpart J class B Dimensions 16 5 x 6 0 x 13 6 inches 41 9 x 15 2 x 34 5 cm Weight Approximately 20 lbs 9 1 kg Safety Complies with 73 23 EEC 93 68 EEC EN61010 and IEC 1010 including Amendments 1 and 2 Complete Portable One specifications are down loadable from the Products area of the Audio Precision Web site at audioprecision com Portable One Dual Domain Block Diagram WOW amp FLUTTER DISCRIMINATOR CHANNEL ey A J INPUT BAND PASS TERMINATION O BAND REJECT FILTER ANALOG INPUT INPUT PREAMP l and SSaik PHASE FREQ CHANNEL E B J ATTENUATOR Eai COMPARATORS i INPUT TERMINATION AMPLIFIER H areas AES EBU JITTER npu RECEIVER DETECTOR OPTICAL REFERENCE IN Ordering Information P1PA Portable One Plus Access Audio Test System with GPIB interface MEASUREMENT PE INTERMOD DEMODULATOR MICROPROCESSOR DSP SQUARE WAVE GENERATOR PRIMARY READING DETECTOR MAIN OS
11. ak sine wave calibrated 0 10 UI 1 5 dB 100 Hz 22 kHz 50 Hz HP selection RMS detection 48 kHz sample rate Residual Jitter peak calibrated 3 analyzer only 700 Hz 30 kHz W lt 0 01 UI RMS lt 0 03 UI Peak Jitter Amplitude 500 Hz Jitter Flatness Channel Status Bits English language decoded Professional Consumer Spurious Jitter Products lt 0 002 UI 1 2 kHz or 0 dB below jitter signal Validity Flag Selectable set or cleared AES EBU Impairments Induced Jitter Jitter Freq Range Jitter Amplitude Sine wave 10 Hz to 38 8 kHz 0 1 28 UI pk in steps of 0 005 UI or better 1 3 12 75 UI in steps of 0 05 UI or better total generator analyzer peak calibrated lt 0 005 UI 700 Hz 30 kHz BW lt 0 015 UI 700 Hz 30 kHz BW Residual Jitter RMS response Peak response Accuracy 20 Hz 20 kHz 2 0 deg Resolution 0 1 deg Level Meter Related both channels Measurement Range 10 mV to 140 V for specified accuracy and flatness useable to lt 100 uV 38 dBu to 45 dBu Spurious Jitter Products Jitter amp Ref Delay Off lt 0 0005 UI Jitter On lt 30 dB below jitter signal REFERENCE INPUT CHARACTERISTICS Input Formats AES EBU per AES3 1992 Input Sample Rates 28 8 kHz 99 9999 kHz Accuracy 1 kHz Flatness 1 kHz ref 0 1 dB 100 pV Vin gt 10 mV 0 05 dB 20 Hz 20 kHz Bandpass Amplitude Function Tuning Range f Bandpass Response 20 Hz t
12. at 1 kHz Amplitude Resolution 0 01 dB Flatness 1 kHz ref 10 Hz 20 kHz 0 05 dB Residual THD N 25 Hz 20 kHz lt 0 0025 3 uV 80 kHz BW 92 dB Square Wave Frequency Range 20 Hz 30 kHz Amplitude Range Balanced 0 71 mVpp to 34 73 Vpp Unbalanced 0 71 mVpp to 17 36 Vpp Amplitude Accuracy 0 3 dB 3 5 at 400 Hz Rise fall time ically 2 5 3 0 us SMPTE or DIN Test Signals with option P1 IMD LF Tone 50 60 70 or 250 all 1 0 HF Tone Range 7 kHz or 8 kHz 1 Mix Ratio 4 1 LF HF Residual IMD 0 0015 96 5 dB 60 Hz 7 kHz or 250 Hz 8 kHz OUTPUT CHARACTERISTICS Source Configuration Source Impedances Selectable balanced or unbalanced Balanced 40 Q NE RS 150 Q 2 Q or 600 Q Unbalanced 40 Q a o Output Current Limit 75 mA peak Max Output Power Balanced Unbalanced Output Related Crosstalk 10 Hz 20 kHz ANALOG ANALYZER ANALOG INPUT CHARACTERISTICS Input Ranges 80 mV to 250 V in 10 dB steps Maximum Rated Input 350 Vpk 140 Vrms dc to 20 kHz overload protected 30 0 dBm into 600 Q Rs 40 Q 23 9 dBm into 600 Q Rs 40 Q lt 110 dB or 10 uV whichever is greater Input Impedance Balanced each side Unbalanced Terminations CMRR 80 mV 2 5 V range Input Related Crosstalk 10 Hz 20 kHz Wideband Amplitude Noise Function Measurement Range lt 1 Vrms to 140 Vrms 118 dBu to 45 dBu 0 2 dB 2 37 unweighted Nominally 1
13. ck rate output block rate digital audio waveform jitter signal or the de tected interface errors A buffered version of the balanced AES3 signal from the XLR input is also available which coupled with the high input impedance of the XLR in bridging mode allows non intrusive digital line measurements with conventional ground referenced oscilloscopes Save amp Recall Tests Save 30 instrument setups including sweep results data time stamped from the internal clock calendar Use for repeatable easy bench and production testing or when in the RECALL STORE field for storing test data to be printed or an alyzed later Each saved test includes all settings UE CANCEL ATHD H_ O AMPL MTALK Data FREQ PAGE 19 GRAPH RECALL for the entire instrument a default descrip tion or your own title for the test the date and time and the last test sweep result data Print Graphs And Test Results Portable One prints graphs panel setups and measured data either to laser PCL com patible or inkjet printers Front panel keys Save your test setups with measured data and print reports select two sizes of graph output including cursor data tabular sweep data bargraphs and front panels for printing For a quick print a compact graph provides a direct replication of the LCD screen A larger graph printout covering approxi mately half a page 360x280 pixels with grid lines allows finer detai
14. e Choice of 7 kHz or 8 kHz Lower Tone Range Choice of 50 Hz 60 Hz 70 Hz or 250 Hz Amplitude Ratio 4 1 LF HF Residual Distortion lt 0 00001 140 dB at 4 1 ratio Random Generator Waveform Waveform Compatible with Audio Precision BITTEST Dither all waveforms Probability Distribution Triangular or rectangular independent for eac channel Flat white or Shaped 6 dB oct triangular only Spectral Distribution Flatness 1 kHz ref Bandwidth Limiting Filters LF 3 dB HF 3 dB 0 05 dB 20 Hz 20 kHz lt 10 Hz 400 Hz 5 3 pole 22 kHz 30 kHz 80 kHz 3 pole or 300 kHz ANSI IEC A CCIR QPK CCIR ARM CCIR RMS Up to 2 Aux 1 and Aux 2 RMS us 60 ms AVG QPK CCIR Rec 468 Weighting Filters Optional Filters Detection te Noise 22 Hz 22 2 kHz BW lt 1 A weighted lt 1 lt CCIR QPK Frequency Meter Related both channels Measurement Range 10 Hz 200 kHz Accuracy 0 01 100 PPM Resolution 5 digits Phase Measurement Related Measurement Ranges 180 90 270 or 90 270 deg Amplitude AES EBU INTERFACE GENERATION Interface Signal Amplitude Range Balanced XLR Unbalanced BNC Automatically tracks word length or off 0 5 11 Vpp into 110 Q in 5 mV steps 0 1 62 Vpp into 75 Q in 1 6 mV steps Narrow Band Amplitude Frequency Range 0 04 to 40 of sample rate 10 Hz 19 2 kHz at 48 0 ks sec 10 pole Q 19 BW
15. fre quency Adjust output signal amplitude con tinuously from zero to 5 12 Volts in 5 mV increments not just at a few steps Only the Portable One Dual Domain provides this flexibility in a portable analyzer Independent Interface 1 0 Word Lengths Word length resolution of digital input and output are independently set from 16 to 24 bits Output resolution is set to match the device under test to assure proper IRATE BHC HiZ DELAY 48000 0 Hz 260 72 UI GEN SINE 60 00daBFr 1 0001 kHz REF MEAS INP i 24hbit OUT BLOCK dither Input resolution must be set to ex clude signal in the AUX bits or other low level bit activity meaningless to the desired measurement Independent Input amp Output Sample Rates Lets you test sample rate converters Mea surement of the incoming embedded audio signal can be referred to the incoming sam ple rate status byte indication of rate or the outgoing generator rate DS ENDS CONS EMPH NONE SRi32 kHz DINP CONS EMPH HONE SR 32kHz HO ERRORS VALID COPY NG COPY WG Datav Error Testing Capability for Digital Audio Signals Stimulate the test device with random data and display current or totaled error mea surements on both channels The signal and analysis techniques are compatible with the BITTEST feature of our System products so you can test a transmission link end to end DERROR GA ERROR GE DATA GE 1567587T 15672667 OOOO MK OO NSN 10T 40000
16. igital The Portable One Plus Access Portable One Plus Access includes comprehensive analog generation and measurement with two outputs and two inputs Easy to set up sweep capability produces graphs of frequency response distortion vs frequency and even amplitude sweeps Non volatile storage of up to 30 tests allows easy one button recall of your favorite test setup Connect Portable One to a compatible printer and produce reports incorporating high resolution graphs If you work with digital audio the Portable One Dual Domain model adds AES3 SPDIF audio and in terface measurement capabilities to the comprehensive analog capabilities of the Portable One family Analog Digital AES3 SPDIF the Portable One Dual Domain Portable One Dual Domain is a comprehensive audio test set for both analog and digital au dio as well as for generation and measurement of AES3 SPDIF digital interface characteris tics such as jitter Like our 2700 Series family of instruments Portable One Dual Domain features true dual domain architecture Digital signals are generated and measured purely in the digital domain resulting in the extremely low distortion and noise residuals necessary for making useful digital audio measurements Performance Measurement Power and Ease of Use Easy to Use Measurement functions are simply selected from the front panel Just press a button and make the FUNCTION a ANALOG wi O D pines om S STALK IGITAL ve P DAM
17. imulta neously Phase and level ratio measure ments are also available Full Range of Analog amp Digital Testing Facilities Portable One Dual Domain provides com plete and parallel measurement capabilities for both analog and digital audio signals Measurements common to both domains in clude Amplitude Noise Level 2 channels simultaneously Frequency Phase THD N SMPTE DIN IMD Crosstalk and Level Ratio Standard A weighting CCIR 468 and LP HP filters are included in both domains RMS and quasi peak CCIR 468 detectors are available in both domains Analog Performance The low distortion transformer coupled ana log generator supplies a full 30 17 dBu 29 6 dBm into 600 Q2 at selectable 40 Q 150 Q or 600 Q source imped ances Extremely low analyzer noise and re sidual distortion support measurement of high performance digital devices Analog Convenience Functions In addition to the above measurements the analog GEN LOAD function measures the in put resistance of your device at any fre quency you choose and makes swept impedance measurements including loud speakers AC MAINS CHECK measures the voltage fre quency and distortion of the power line without hazardous direct connections BARGRAPH display in AC MAINS CHECK func tion provides a visible history of maximum and minimum mains voltage excursions AAC MAINS THD N FREG 117 0 v 48 x E9987 Hz AGEN SINE 1 000 1 000 kHz SELF T
18. included with instrument SVC P1 Service manual for Portable One Plus Access or Portable One Dual Domain CAB XMF Set of four XLR male to XLR female cables CAB XBR Set of four XLR male female to RCA BNC cables CAB AES CAB AES2 CAB AES4 Set of two AES3 digital cables 1 meter Set of two AES3 digital cables 2 meters Set of two AES3 digital cables 4 meters Soft carrying case option The padded interior protects your Portable One An extra pocket stores documentation and cables pn 0057 0003 rev 1 BUYING A PORTABLE ANALYZER FOR ANALOG AND DIGITAL AUDIO What to look for when evaluating com petitive instruments Digital Architecture and Features Not all analyzers that accept a digital input signal are actually digital ana lyzers Does the instrument have a real DSP implemented digital do main analyzer or just a D A converter from the digital input connector to an analog hardware analyzer This latter approach in a competitive unit yields distortion performance in the 12 14 bit range 70 to 85 dB THD N for example There s just not that much 12 bit digital audio around to mea sure anymore Portable One Dual Do main s digital analyzer guarantees 130 dB residual distortion nearly 22 bit performance far in excess of the 108 to 112 dB actual linearity of today s best A D converters Analog Performance Does the in strument have an analog hardware generator and an analog hard
19. l to be shown Both graphs show key instrument setup pa rameters as well Tabular data values for all Swept points may be printed in order to preserve exact reading values The bargraph displays with their useful minimum maximum indicators print just as they are seen on the display as do any de sired instrument panels Various printouts may be combined on one page to include graphs bargraphs and numeric data INTERNAL CLOCK CALENDAR An internal clock calendar automatically stamps the time and date on setups and data as they are saved PRINTER 97 10 17 FREGQ STEP PCL GRAPH 00 20 44 1 0000 kHz INVERT AMPL STEP DISPLAY 100 0 mi You can view or set the clock calendar from the Setup panel GPIB Control An IEEE 488 Interface is built in to allow control of the instrument in an automatic test environment National Instruments LabWindows CVI and LabVIEW drivers are available A LabWindows CVI soft front panel program is provided with a Windows user interface for real time instrument con trol through the GPIB interface The LabVIEW driver is provided with a Getting Started VI and sample VIs ANALOG SIGNAL OUTPUTS Low Distortion Sine Wave Frequency Range Frequency Accuracy Amplitude Range 10 Hz to 120 kHz 0 5 20 Hz to 30 kHz Balanced lt 0 25 mV to 26 25 Vrms 70 dBu to 30 6 dBu Unbalanced lt 0 25 mV to 13 12 Vrms 70 dBu to 24 6 dBu Amplitude Accuracy 0 2 dB 2 3
20. o 120 kHz Q 5 2 pole Lock Range 0 0025 25 PPM DIGITAL ANALYZER DIGITAL INPUT CHARACTERISTICS Input Formats AES EBU per AES3 1992 SPDIF ETAJ Optical Accuracy at f 0 3 dB 20 Hz 120 kHz THD N SINAD Function Fundamental Range Measurement Range SINAD Range 10 Hz to 100 kHz THD N mode 001 100 400 Hz 1 kHz Accuracy 1 dB 20 Hz 120 kHz harmonics Measurement Bandwidth LF 3 dB lt 10 or 400 HF 3 dB 22k 30k sok or 300 kHz Residual THD N 25 Hz 20 kHz 0 0025 3 0 pV 80 kHz BW 92 dB Crosstalk Function Frequency Range Measurement Range Accuracy 10 Hz to 120 kHz 140 dB to 0 dB 0 5 dB Sample Rates 28 8 kHz 99 9999 kHz Word Length 16 to 24 bits EMBEDDED AUDIO MEASUREMENTS Wideband Level Amplitude Range 0 dBFS to 140 dBFS Frequency Range lt 10 Hz 22 0 kHz at 48 ks sec Accuracy 0 01 dB 90 dBFS Flatness 0 01 dB 15 Hz 22 kHz High pass Filters Low pass Filters 22 Hz 400 Hz 2 pole Butterworth 15 kHz 20 kHz 6 pole elliptic low pass Weighting Filters ANSI IEC A weighting CCIR QPK CCIR RMS Residual Noise 140 dBFS unweighted 142 dBFS A weighted Channel Status Bits English language decoded Professional Consumer Displayed for selected channel Displayed for total signal both channels combined Validity Flag Parity Signal Confidence Receiver Lock Coding Error AUXILIARY SIG
21. ware an alyzer Some competitive units at twice the price of Portable One Dual Domain use DSP techniques for all generation and analysis so analog signals pass through converters inside the instrument The result is THD N as high as 79 dB flatness as poor as 0 2 dB inadequate for most modern audio devices Interface Testing Does the instru ment have independent analog digi tal and jitter generators If it can only provide analog or digital output at any one time you can t test a house synchronized A D converter for jitter rejection Without independent flexible digital audio and jitter gener ators you can t measure jitter sensi tivity of a D A converter at various audio and jitter frequency combina tions True Dual Domain True Dual Domain hardware by definition guarantees a full range of analysis capabilities in both analog and digital domains Ev eryone measures level and some mea sure THD N although implemented with extremely limited performance as noted above Be sure that other useful measurements such as IMD Intermodulation Distortion Phase and Crosstalk are available for both analog and digital signals not just analog Audio precision Testing for Optimal Results 5750 SW Arctic Drive Beaverton Oregon 97005 Tel 503 627 0832 Fax 503 641 8906 US Toll Free 1 800 231 7350 email sales audioprecision com web audioprecision com 1V0930134245
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