Audio Precision APx555, Инструкции по установке и технические характеристики

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Characteristic Specifications Supplemental Information
APx555 B Series Audio Analyzer: Analog I/O Specifications 43
55
5
IMD Products Measured
SMPTE Amplitude modulation of HF tone Demodulator BW is ≈ 40–750 Hz
MOD d2, d3, d2+d3, or d2...d5 Use “d2+d3” for IEC60268
DFD d2, d3, d2+d3, or d2...d5 Use “d2+d3” for IEC60268
CCIF d2 only “CCIF” is an archaic form of DFD that
measures only the d2 product. CCIF
also uses a lower 0 dB reference that
gives readings 2x higher than DFD.
DIM U1...U9 or “Emulation” Use “U1…U9” for IEC-60268;
“Emulation” matches the response
of earlier AP analyzers
Measurement Range 0 to 20%
Accuracy ±0.5 dB
Residual IMD
2,3,6,7
SMPTE

–100 dB

0.0010%] 60 Hz + 7 kHz, 4:1 mix
MOD

–102 dB

0.00080%], d2+d3 60 Hz + 7 kHz, 4:1 mix
DFD

–110 dB

0.00032%], d2+d3

–115 dB

0.00018%], d2 only
19 kHz + 20 kHz
[F
mean
= 19.5 kHz, F
diff
= 1 kHz]
CCIF  –109 dB  0.00036%] 12 kHz + 13 kHz
[F
mean
= 12.5 kHz, F
diff
= 1 kHz]
DIM ≤ –95 dB [0.0018%] DIM-100 or DIM-30
Frequency Measurement
Range 5 Hz to 1.0 MHz Maximum frequency is limited to
≈ 0.45 • SR of the analyzer A/Ds.
Accuracy
5
±(0.0003% [3 ppm] + 100 µHz)
Minimum Input 3 mV Usable down to 100 µV
Phase Measurement
Ranges –90 to +270, ±180, or 0 to 360 deg
Accuracy
9
5 Hz to 5 kHz ±0.15 deg
5 kHz to 20 kHz ±0.6 deg
20 kHz to 50 kHz ±1.5 deg
Minimum Input 3 mV