Audio Precision Portable One Plus Access - Introducing the Portable One Plus Access; Measurement Functions

Introducing the Portable One Plus Access
The Audio Precision Portable One Plus Access is a comprehensive
two-channel analog audio test instrument. It features the following
measurement functions:
.
Level (two channels simultaneously)
.
Noise or signal-to-noise ratio (wideband, weighted, or selective)
.
THD+N (total harmonic distortion plus noise)
.
Interchannel phase or phase shift through a device
.
SMPTE/DIN intermodulation distortion (optional)
.
Real-time two-channel amplitude ratio (interchannel balance or
device gain/loss)
.
Real-time frequency-selective crosstalk
.
Wow and Flutter
.
SINAD (ratio of {signal + noise + distortion} to {noise +
distortion})
.
Loading (AC resistance of the input of a device connected to
the generator output)
.
AC mains check (voltage, frequency, and distortion of the AC
power line)
Figure 1-1. Portable One Plus Access
1
Introduction
Portable One Plus Access User's Manual 1-1
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