Key Specifications
Sine Frequency Range
0.001 Hz to 80 kHz, DAC5 Hz to 204 kHz, AnalogResidual THD+N (22 kHz BW)
–117 dB + 1.0 µVTypically <–120 dB (1 kHz, 2.0 V)
Amplitude Accuracy
±0.03 dBFlatness (5 Hz–20 kHz)
±0.008 dBCategory
Features
KEY FEATURES
- Residual THD+N: -120 dB (typical)
- Over 1 MHz bandwidth @ 24 bits on two channels
- Signal generation up to 204 kHz and 26 Vrms
- 1.2 M point FFTs
- ADC Test Mode option
- Support for the complete range of APx digital I/O options, including 32-bit digital serial I/O at up to 432 kHz sample rate
- Transfer Function Measurement (Sequence or Bench Mode)
- Open-Loop Measurement (Chirp or Fast Sweep)
- Support for jitter capable digital interface options
- Advanced Master Clock for Reference, Sync and Trigger
- Simultaneous analog & digital measurement (v6.0)
Unprecedented Performance
With a typical residual THD+N of -120 dB and over 1 MHz bandwidth, the APx555 B series surpasses the analog performance of all other audio analyzers. This performance is supported by 1.2 million point FFT resolution. The chart below shows the residual THD+N of several current audio analyzers as a function of generator level; lower values are better. The red trace at the bottom is the APx555; the blue trace above that is the SYS-2722, and the green trace is the APx525
Multi-mode UI
APx500 measurement software allows the B Series APx555 to adapt to the needs and preferences of audio designers, engineers and technicians.
Sequence Mode provides complete, code-free automation of pre-defined measurement sequences to enable fast and reliable results.
Bench Mode provides a real-time interface, with waveforms, FFTs and meters for virtually any parameter enabling the identification of important device interactions. Picture below showing live meters and monitors for waveforms, FFT, RMS levels, frequency and THD+N.
Power Line Error Simulation
The APx555 supports the complete range of APx digital I/O options, ensuring compatibility with a wide array of audio formats and devices.
- Bluetooth® – supports A2DP, AVRCP, HFP and HSP profiles
- PDM – one-bit audio generation & analysis (including PSRR and jitter*)
- PDM 16 – Simultaneous 16-channel PDM signal acquisition
- Digital Serial – I2S, TDM, multi-line support (including jitter*)
- Advanced Digital – AES/SPDIF/Optical (including jitter*)
- HDMI+ARC – source, sink & monitor (including metadata)
Picture below shows B Series APx platform incorporates a modular architecture enabling configuration for a variety of digital I/O options.
Model
| Model | SYSTEM PERFORMANCE | GENERATOR PERFORMANCE | ANALYZER PERFORMANCE |
|---|---|---|---|
| APx555 B Series | Residual THD+N (22kHz BW) -117 DB + 1.0 µV Typical < -120 DB (1 KHZ, 2.0 V) |
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SLIDE TO VIEW MORESeries models
APx555B
APx555B
