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Audio Precision Portable One Plus Audio Analyzer & Generator
Specifications of the Audio Precision
Portable One Plus exceed those of larger (and bulkier!) traditional
benchtop analyzers and meters. Distortion and noise residuals are low
enough to measure high performance digitally based equipment. If at any
time you wish to confirm those specifications, a complete automatic
self-test function is provided.
Audio Precision Portable One Plus includes special features
to make your bench work easier. Large bargraph displays are available at
the touch of a button for peaking and nulling adjustments. Bargraph
resolution is user-defined with arbitrary end point settings, and minimum
and maximum excursions are shown graphically A sophisticated external
sweep mode accepts glide or stepped sweeps from test discs, tapes or
external generators. Its features and physical layout are optimized for
efficient and intuitive operation. A single push of a measurement Function
button produces a reading. Logically grouped buttons control different
mode and display choices. Controls and connectors are positioned for
convenient operation.
Audio Precision Portable One Plus Features:
- Portable: The Portable One Plus is
lightweight and exceptionally rugged due to the robust high-impact
purpose-designed polycarbonate case.
- Easy to use: 12 different measurement
functions are simply selected from the front panel; just press a
button and make a measurement. The Audio Precision Portable One Plus
makes graphs of measurements versus frequency in real time on the
back-lighted high-contrast super-twist LCD display.
- Stereo: The Audio Precision Portable One Plus is a true
two-channel instrument. LEVEL function measures both input channels
simultaneously, numerically displays both along with frequency or
phase, and graphs in SWEEP or BARGRAPH display modes.
- Comprehensive: This instrument measures
THD + N, IMD (option), amplitude, moise, two-channel level, real-time
ration, phase, wow and flutter (3 standards), device input resistance,
ac mains check, SINAD, frequency, and real-time crosstalk/seperation.
- High Performance: The generator
supplies a full +30.6dBu (+30 dBm into 600 Ohms) for headroom testing.
Audio Precision Portable One Plus Specifications:
| Generator
Characteristics |
| Signals |
Sine,
square, IMD signal (optional) |
| Frequency
Range |
10
Hz-120kHz, sinewave; 20Hz-30kHz, squarewave |
| Frequency
Resolution |
0.02% |
| Frequency
Accuracy |
+0.5% |
| Amplitude
Range |
0.25mV-12.28V
(-10 to +30.6 dBu) for 20 Hz-30kHz sinewaves
0.25mV-12.28V (-70 to +24dBu) for all other signals |
| Amplitude
Resolution |
0.01dB |
| Amplitude
Accuracy |
+0.2dB,
sinewave, +0.3dB, squarewave and IMD |
| Output
Impedances |
600
BAL, 1502 BAL, 40 BAL
40 UBAL; all +2Ohms, Transformer coupled |
| Max.
Output Current |
75
mA peak |
| Analyzer
Characteristics |
| Input
Impedance |
100kOhms
(+1%)//150-200pF; each side to ground |
| Max.
Rated Input |
350Vpeak;
140Vrms, dc-20kHz (250Vrms, 48-63Hz) |
| Common-Mode
Rejection |
70
dB, 50Hz-20Khz, Vin≤2; 50dB, 50Hz-1kHz, Vin>2V |
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