(about $300 used). This free website's biggest source of support is when you use these links, especially this link directly to these processors at eBay (see How to Win at eBay), when you get anything, regardless of the country in which you live. Thanks! Ken.
Measured with the Rohde &Schwarz UPL. The traces are color coded for the Left Channel and for the Right Channel. When they don't lie on top of each other, it's due to channel imbalance.
Measured analog-in to analog-out, 16-bit encode-decode via NTSC video mode:
Frequency response 20 - 20,000 Hz.
Frequency response 20 - 20,000 Hz. (expanded scale)
Frequency response 10 - 20,000 Hz. (even more expanded scale)
Frequency response 0.2 - 20,000 Hz.
Frequency response 20,000 - 22,050 Hz.
THD vs. level at 1 kHz.
Gain linearity vs. level.
Gain linearity vs. level. (14-bit mode)
Right Channel phase relative to left.
D/A Converter Only (SPDIF In --> Analog Out)
DAC THD vs. level, no deemphasis.
DAC Right Channel phase relative to left, no deemphasis.
As expected, it's expecting inputs from a time-multiplexed ADC, so fed a more modern signal, the Right channel is delayed about 12.1 µS from the left, the same as moving the right speaker 2/3" (16mm) further away from your ear.
Full analog-digital-analog feedthrough, with demphasis at 1 kHz:
Output at 0 dBFS: 1.340V RMS left, 1.377V RMS right.
MOL at 0.1% THD: 1.358V RMS left, 1.391 V RMS right.
Fed from digital source, no preemphasis
0 dBFS = 1.4017V RMS left, 1.4353V RMS right.
at 0 dB FS, digital in, no demphasis 0.00094% left, 0.00175% right.
A-weighted output noise
left: 80 uV (-81.99 dBV) RMS, left: 37.7 uV (-88.55 dBV) RMS
(14-bit: left 86.5 uV (-81.22 dBV) RMS, right 49.65 uV (-86.27 dBV) RMS)
PCM-501ESD was similar, minus the SPDIF interfaces.
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