Audio Precision Portable One Plus Access - Page 158

Crosstalk Function
Frequency Range
10 Hz to 120 kHz
Measurement Range
-140 dB to 0 dB
Accuracy
6
±0.5 dB
Residual Crosstalk
6
≤-120 dB at 20 kHz, R
s
= 600Ω
Minimum Input
25 mV for reference channel
SMPTE (DIN) IMD Function with option “P1-IMD”
Test Signal Compatibility Any combination of 40 to 250 Hz (LF) and
3 kHz to 20 kHz (HF) tones, mixed in any
ratio from 0:1 to 8:1 (LF:HF)
IMD Measured
Amplitude modulation products of the HF
tone. -3 dB measurement bandwidth is
typically 20Hz-750Hz
Measurement Range
<0.0025%-20%
Accuracy
±1 dB per SMPTE RP-120-1983, DIN
45403
Residual IMD (Vin ≥200mV)
7
≤0.0025% [-92 dB], 60 + 7 kHz or 250 + 8
kHz
Minimum Input
100 mV
Ratio Function
Measurement Range
-80 dB to +100 dB, 0.01 dB resolution
Accuracy
±0.1 dB, 20 Hz-20 kHz
Minimum Input
Mode 1 10 mV [-38 dBu], denominator signal
10 µV [-98 dBu], numerator signal
Mode 2
10 µV [-98 dBu], denominator signal
10 mV [-38 dBu], numerator signal
AC Mains Check Function
Measurement Range
0.85 to 1.10 of nominal setting
Voltage Accuracy
±1 %
Note 6 Uses the 1/3 octave bandpass filter to enhance the measured range in the
presence of wideband noise. Alternate (interfering) channel input must
be
≥5mV.
Note 7 System specification including contribution from generator.
G Specifications
Appendix G - Specifications
G-6 Portable One Plus Access User's Manual
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