PORTABLE ONE PLUS Audio Precision Audio Analyzer

Used

Additional Features:

Analog Signal Outputs

Low Distortion Sine Wave

  • Frequency Range: 10 Hz to 120 kHz
  • Frequency Accuracy: ±0.5 %
  • Amplitude Range: (20 Hz to 30 kHz)
  • Balanced: <0.25 mV to 26.25 Vrms [–70 dBu to +30.6 dBu]
  • Unbalanced: <0.25 mV to 13.12 Vrms [–70 dBu to +24.6 dBu]
  • Amplitude Accuracy: ±0.2 dB [±2.3 %] 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: ≤(0.0025% + 3 μV), 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: Typically 2.5–3.0 μs

Output Characteristics

  • Source Impedances: Balanced: 40 Ω (±2 Ω), 150 Ω (±2 Ω), or 600 Ω (±6 Ω); Unbalanced: 40 Ω (±2 Ω)
  • Output Current Limit: 75 mA peak
  • Max Output Power
  • Balanced: +30.0 dBm into 600 Ω (Rs = 40 Ω)
  • Unbalanced: +23.9 dBm into 600 Ω (Rs = 40 Ω)
  • Output Related Crosstalk (10 Hz–20 kHz): ≤–110 dB or 10 μV, whichever is greater

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
  • Input Impedance: Balanced (each side): Nominally 100 kΩ // 150–200 pF; Unbalanced: Nominally 100 kΩ // 150–200 pF
  • Terminations Selectable 600 Ω ±1 %
  • CMRR 80 mV–2.5 V range: ≥70 dB, 50 Hz–20 kHz
  • Input Related Crosstalk 10 Hz–20 kHz: ≤–120 dB or 1 μV, whichever is greater

Wideband Amplitude/Noise Function

  • Measurement Range: <1 μVrms to 140 Vrms [–118 dBu to +45 dBu]
  • Accuracy (1 kHz): ±0.2 dB [±2.37 %] unweighted
  • Flatness (1 kHz ref): ±0.05 dB (20 Hz–20 kHz)
  • Bandwidth Limiting Filters: LF –3 dB: <10 Hz; 400 Hz ±5 % (3-pole); HF –3 dB: 22 kHz; 30 kHz; 80 kHz (3-pole), or 300 kHz
  • Weighting Filters: ANSI-IEC “A”; CCIR-QPK; CCIR-ARM; CCIR-RMS
  • Optional Filters: Up to 2 (Aux 1 and Aux 2)
  • Detection: RMS (=60 ms); AVG; QPK (CCIR Rec 468)
Residual Noise
  • 22 Hz–22 kHz BW: ≤1.5 μV [–114 dBu]
  • A-weighted: ≤1.0 μV [–118 dBu]
  • CCIR-QPK: ≤5.0 μV [–104 dBu]

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
  • 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 <100 μV [–38 dBu to + 45 dBu]
  • Accuracy (1 kHz): ±0.1 dB + 100 μV
  • Flatness (1 kHz ref): (Vin >10 mV) ±0.05 dB (20 Hz–20 kHz)
Bandpass Amplitude Function
  • Tuning Range (fº): 20 Hz to 120 kHz
  • Bandpass Response: Q=5 (2-pole)
  • Accuracy (at fo): ±0.3 dB, 20 Hz–120 kHz

THD+N / SINAD Function

  • Fundamental Range: 10 Hz to 100 kHz, THD+N mode
  • Measurement Range: .001 %–100 %
  • SINAD Range: 400 Hz–1 kHz
  • Accuracy: ±1 dB, 20 Hz–120 kHz harmonics
  • Measurement Bandwidth: LF –3 dB: <10 or 400 Hz; HF –3 dB: 22k, 30k, 80k, or 300 kHz
  • Residual THD+N 25 Hz–20 kHz: ≤(0.0025% + 3.0 μV), 80 kHz BW [–92 dB]
Crosstalk Function
  • Frequency Range: 10 Hz to 120 kHz
  • Measurement Range: –140 dB to 0 dB
  • Accuracy: ±0.5 dB

Wow & Flutter Function

  • Test Signal Compatibility: 2.80 kHz–3.35 kHz
  • Accuracy (4 Hz): ± (5 % of reading + 0.002 %)
  • Detection Modes: IEC/DIN; NAB; JIS
  • Residual W+F: ≤0.005% Weighted; ≤0.01% Unweighted

Digital Signal Generator

Digital Output Characteristics

  • Output Formats: AES/EBU (per AES3-1992); SPDIFEIAJ; Optical
  • Sample Rates: 28.8 kHz–99.9999 kHz
  • Sample Rate Accuracy: ±0.002% [±20 PPM] lockable to external reference
  • Word Length: 16 to 24 bits (even values)

Sine Wave

  • Frequency Range: 10 Hz to 47 % of sample rate (22.56 kHz at 48 ks/s)
  • Frequency Resolution: Sample Rate DIVIDED BY (typically 0.006 Hz at 48 ks/sec)
  • Flatness: ±0.001 dB
  • Residual Distortion: ±0.00001 % [–140 dB]
Square Wave
  • Frequency Range: 10 Hz to 1/6 sample rate
  • Frequencies available: f s ÷ 4096 to f s ÷ 6, in even integer divisors

Random Generator Waveform

  • Waveform Compatible with Audio Precision BITTEST
Dither (all waveforms)
  • Probability Distribution: Triangular or rectangular; independent for each channel
  • Spectral Distribution: Flat (white) or Shaped (+6 dB/oct, triangular only)
  • Amplitude: Automatically tracks word length or off

AES/EBU Interface Generation

Interface Signal

  • Amplitude Range: Balanced (XLR): 0–5.11 Vpp, into 110 Ω in 5 mV steps; Unbalanced (BNC): 0–1.62 Vpp, into 75 Ω in 1.6 mV steps
  • Channel Status Bits: English language decoded, Professional/Consumer
  • Validity Flag: Selectable, set or cleared

AES/EBU Impairments

  • Induced Jitter: Sine wave
  • Jitter Freq Range: 10 Hz to 38.8 kHz
  • Jitter Amplitude: 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
Residual Jitter (total generator/analyzer) peak calibrated
  • RMS response: ≤0.005 UI (700 Hz–30 kHz BW)
  • Peak response: ≤0.015 UI (700 Hz–30 kHz BW)
Spurious Jitter Products
  • Jitter & Ref Delay Off: /=0.0005 UI
  • Jitter On: /=–30 dB below jitter signal

Reference Input Characteristics

  • Input Formats: AES/EBU (per AES3-1992)
  • Input Sample Rates: 28.8 kHz–99.9999 kHz
  • Lock Range: ±0.0025% [±25 PPM]

Digital Analyzer

Digital Input Characteristics

  • Input Formats: AES/EBU (per AES3-1992); SPDIFEIAJ; Optical
  • 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: <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: 22 Hz, 400 Hz, 2-pole Butterworth
  • Low pass Filters: 15 kHz, 20 kHz 6-pole elliptic lowpass
  • Weighting Filters: ANSI-IEC “A” weighting; CCIR QPK; CCIR RMS
  • Residual Noise: –140 dBFS unweighted; –142 dBFS A-weighted

Narrow Band Amplitude

  • Frequency Range: 0.04% to 40% of sample rate (10 Hz–19.2 kHz at 48.0 ks/sec)
  • Filter Shape: 10-pole, Q=19 (BW = 5.3% of fº)

THD+N Measurements

  • Fundamental Range: 0.02% to 45% of sample rate (10 Hz–22.0 kHz at 48.0 ks/sec
  • Residual THD+N: ≤–138 dBFS
  • High pass Filters: 22 Hz, 400 Hz 2-pole Butterworth
  • Low pass Filters: 15 kHz, 20 kHz 6-pole elliptic lowpass
  • Weighting Filters: ANSI-IEC “A” weighting; CCIR QPK; CCIR RMS

Frequency Measurements

  • Range: 5 Hz to 47% of sample rate
Phase Measurement Related
  • Measurement Ranges: ±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
  • Output to Input or Reference Input to Input Delay: Measures status propagation from the AES/EBU output to the input. Range is 0–192 (frames), resolution ±60 ns.

AES/EBU Input Voltage

  • Balanced: 400 mV to 10.24 Vpp, ± (10% + 50 mV)
  • Unbalanced: 100 mV to 2.56 Vpp, ± (10% + 30 mV)
  • Jitter Amplitude (500 Hz): (peak-peak sine wave calibrated) 0–10 UI
  • Jitter Flatness: ±1.5 dB, 100 Hz–22 kHz (50 Hz HP selection, RMS detection, 48 kHz sample rate)
  • Residual Jitter, peak calibrated: (analyzer only) (700 Hz–30 kHz BW)≤0.01 UI RMS; ≤0.03 UI Peak
  • Spurious Jitter Products: ≤0.002 UI (1.2 kHz) or 0 dB below jitter signal
  • Channel Status Bits: English language decoded (Professional/Consumer)
  • Validity Flag: Displayed for selected channel
  • Parity; Signal Confidence; Receiver Lock; Coding Error: Displayed for total signal (both channels combined)

Auxiliary Signals

  • Generator Analog Sync Output; Digital Sync Output; Analyzer Input Monitor; Analyzer Reading

Audio Monitor

  • Power Output: Typically 1 watt

General/Environmental

  • Power Requirements: 100/120/230/240 Vac (–10%/+6%), 50–60 Hz, 50 VA max
  • Temperature Range: 0° C to +40° C Operating; –20° C to +60° C Storage
  • Humidity: 90% RH to at least +40° C (noncondensing)
  • EMC: Complies with 89/336/EEC, CISPR 22 (class B), and FCC 15 subpart J (class B)

The Portable One Plus measures amplitude, signal-to-noise, distortion (THD+N) , SINAD, IMD (option), frequency, wow & flutter, input impedance plus AC mains check. 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.

Easy to Use

Measurement functions are simply selected from the front panel. Just press a button and make the measurement. Selection of analog and digital inputs is clearly indicated on the front panel with LED legends. Portable One makes graphs of swept measurements 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 listings can be made from your Portable One to laser or ink jet printers at the touch of a button. Bargraphs can display measurements ranging from AC mains power line distortion to digital interface error rate …and nearly everything in between. Separate 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 not otherwise used, the setting knobs and buttons also provide a convenient human interface for scrolling display cursors and for entry of other settings and data.

Save & 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 field, for storing test data to be printed or analyzed later. Each saved test includes all settings for the entire instrument, a default description or your own title for the test, the date and time, and the last test sweep result data.

Portable One prints graphs, panel setups and measured data either to laser (PCL compatible) or inkjet printers. Front panel keys 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 approximately half a page (360x280 pixels with grid lines) allows finer detail to be shown. Both graphs show key instrument setup parameters 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 desired 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. 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 control through the GPIB interface. The LabVIEW driver is provided with a Getting Started VI and sample VIs.

More Information
ManufacturerAudio Precision
ConditionUsed
Frequency120 kHz
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