Characteristic Specifications Supplemental Information
38 APx555 B Series Audio Analyzer: Analog I/O Specifications
555
AC Amplitude Range
1
Balanced, Differential 0–6.200 Vpp [2.192 Vrms] for sine-
waves 5 Hz, burst, & IMD signals;
0–5.000 Vpp [1.768 Vrms] for all
other signals
Maximum AC amplitude may be limited
by Positive Peak, Negative Peak, and
Vbias settings
Balanced, Single-Ended 0–3.100 Vpp [1.096 Vrms] for sine-
waves 5 Hz, burst, & IMD signals;
0–2.500 Vpp [0.884 Vrms] for all
other signals
Maximum AC amplitude may be limited
by Positive Peak, Negative Peak, and
Vbias settings
Residual THD+N, THD Same as selected sine generator;
however derate HPSG by 5 dB for
Fs >160 kHz
Output Equalization
Arbitrary 30-pole output filter, scaled
so the maximum gain is –1 dB
Filter cannot be applied to square and
IMD test signals.
Source Resistance (Rs)
Balanced Selectable 40 ±1.5%, 100 ±1%,
150 ±1%, 200 ±1%, or
600 ±0.5%.
Each side to ground is Rs / 2
Unbalanced Selectable 20 ±2%, 50 ±1.5%,
75 ±1.2%, 100 ±1%, or
600 ±0.5%.
Between output and Bnc shield;
Bnc shield to ground 10 || 1 F.
Unbal outputs can float up to 0.3 Vpk
to reject DUT ground noise
Common Mode Test Same as Balanced selections, or
10 Unbalanced per IEC-60268.
Output Related Crosstalk
(–130 dB + 0.2 µV) to 20 kHz
Output Spurious Content
From 100 kHz to at least 1 MHz:
Any Rs 600 Unbal Typically <1.5 V
Rs = 600 Unbal only Typically <5 V
Maximum Output Current
Typically >80 mA peak, 50 mA dc
Peak Reverse Overload
Up to 1A or 30 W, whichever is less.
Outputs automatically disconnect if a
damaging potential is sensed