Characteristic Specifications Supplemental Information
APx515 B Series Audio Analyzer: Specifications 37
Notes to Specifications
1. System specification including contributions from both generator and analyzer. Generator-only and/or analyzer-
only contributions are typically less.
2. Generator load must be 600 balanced or 300 unbalanced for specified performance. Generator dc off-
set must be off or set to ≤10 mV.
3. Analyzer input must be ≥150 mV for specified performance. Analyzer set to measure “d2+d3” IMD products for
MOD and DFD modes.
4. Valid for the balanced input configuration with dc coupling only. With ac coupling, specified performance is
invalid below 50 Hz.
5. Maximum low-pass filter frequency is limited by analyzer input bandwidth setting.
6. Sample rate (SR) must be 27 kS/s for specified performance. Jitter analyzer set for 700 Hz high-pass
response per AES3-1992.
7. Digital generator word width must be set to 24 bits for specified performance; shorter word widths may degrade
performance.
8. Filter response is relative to “no filter” selection; overall system performance will also include analog flatness
imperfections. DSP warping may significantly increase roll-off rate and lower ENBW.
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