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- System performance:
Residual THD+N (20kHz BW): -106 dB
- Source indicators:
Sinusoidal signal frequency range: 2Hz to 80.1kHz
Frequency accuracy: 3ppm
IMD test signals: SMPTE, MOD, DFD
Maximum output amplitude (balanced): 16 Vrms
Amplitude accuracy (1kHz): ±0.05 dB
Flatness (20Hz - 20kHz): ±0.01 dB
Analog output configuration: XLR (balanced) & BNC (unbalanced)
Maximum digital output sampling rate: 216 kHz
Sampling accuracy: 3ppm
Number of bits: 8-24 bits
Residual jitter: Electrical < 1.5ns fiber < 2.5ns
Dolby/dts Source: Yes (pre-encoded file)
- Analyzer indicators:
Maximum rated input voltage: 230Vpk
Maximum bandwidth: 90 kHz
IMD test features: SMPTE, MOD, DFD
Amplitude accuracy (1kHz): ±0.05dB
Amplitude flatness (20Hz-20kHz): ±0.01dB
Residual input noise: 1.3 uV
Independent harmonic analyzer: d2-d10
Maximum FFT length: 1.2M points
DC voltage measurement
- Common indicators:
Size (WxDxH): 480mm*405mm*153mm
Weight: 8kg±0.5kg
Working voltage (AC): 220V, 50Hz/100V-240V, 50Hz-60Hz
Specification
Options and upgrades
Input and output interface options:
1. AX-BT-RD option
BT-RD option is currently the most economical solution for Bluetooth audio testing, with built-in Bluetooth wireless and Bluetooth protocol stacks, enabling engineers to make direct measurements of their Bluetooth devices, eliminating the uncertainty and inconvenience of Bluetooth Dongle, making Bluetooth audio testing faster, simpler and more reliable for R&D and production testing.
2. AX-BT-PT option
BT-PT Bluetooth module is based on the production line test needs and developed Bluetooth function option, which simplifies the pairing connection process of the traditional Bluetooth module, can achieve fast pairing connection in a very short time, has strong Bluetooth compatibility, mainly used in Bluetooth audio product production line or primary R&D testing.
3. AX-HDMI option
HDMI+ARC (Audio Return Channel) is a versatile audio monitoring and measurement option, it is powerful, easy to use, accurate measurement results, can be widely used in multimedia products audio quality testing, can provide all standard audio measurement items, including level, signal-to-noise ratio, distortion, phase, crosstalk, group delay, etc.
4. AX-DSIO option
The DSIO option adds a multi-channel digital serial interface to the audio analyzer, providing a direct connection to the chip-level interface, which plays a decisive role in the design and development of the board, and its simple use and accurate test results can be widely used in audio quality testing of various digital devices.
Software Options:
1. AX-SPK-RD option
SPK-RD provides designers and developers of electroacoustic products with a comprehensive set of test functions and results, including some key acoustic test indicators, a comprehensive set of T/S parameters, time-window-controlled quasi-acoustic response testing of a non-acoustic environment, impedance analysis, and more, this option includes all test functions of the production line version.
2. AX-SPK-PT option
SPK-PT is used for rapid testing of electroacoustic product production lines, providing the main index parameter test of loudspeakers, and obtaining all test results in one scan. The results include Rub & Buzz, the necessary set of T/S parameters, impedance amplitude and phase, and a dedicated modulated noise test function to detect air leakage in the speaker.
3. AX-PESQ is based on ITU-T P.862 standard
Perceptual audio measurement is widely used in mobile phones, VoIP networks, and other device tests to measure how people perceive sound quality. Especially for devices with limited bandwidth or bit rate, parameters such as frequency response/distortion testing using standard sine waves do not effectively reflect device performance, and only a combination of perceptual and electrical audio tests can fully account for device performance.
PESQ is a widely used perceptual audio measurement primarily for subjective evaluation of speech quality in low-bandwidth devices.
4. AX-POLQA2 is based on ITU-T P.863 standard
POLQA2 uses a new generation of POLQA algorithms for subjective assessment of speech quality in wideband voice devices or devices with acoustic coupling. (Inherits PESQ and supports HD voice, 3G, 4G/LTE and VoIP technologies)
5. AX-STIPA option
AX-STIPA is a plug-in that uses the STIPA method for Voice Delivery Index (STI) testing.
