AIO-S Module

The AIO-S module features an integrated impedance measurement circuit for testing speakers and haptic actuators.  Adding this module to the base AIO chassis enables test software to directly measure impedance and resonance without an external current sense resistor.

Connecting the device under test to the SPKR connector measures both the voltage and current through the device.

The AIO-S module also has two analog BNC microphone inputs with switchable IEPE constant current supply.  Input gain, IEPE constant current supply, and TEDS interfacing are software controlled.

Similar to the AIO-A module, the AIO-S module has one class-D amplified output with a Euroblock connector.  The output is differential with (+) and (-) connections, biased at +7.5V.



Analog Inputs


Input Gain: 1x, 10x, or 100x

Full-Scale Input Voltage @ 1x gain: ± 8.75V

Dynamic Range @ 1x gain: > 110 dB

Dynamic Range @ 10x gain: > 105 dB

Dynamic Range @ 100x gain: > 95 dB

THDN (A-weighted): <-95dB 20Hz – 20kHz

Frequency Response: ± 0.5dB 20Hz – 20kHz

Maximum Input Voltage: ± 15V (do not exceed)

Input Impedance: 1MΩ

Constant Current Supply: 4mA / 21V excitation voltage

TEDS: IEEE 1451.4 Class 1

 



Impedance measurement (SPKR connector)

 

Full-Scale Input Voltage @ 1x gain: ± 8.75V

Full-Scale Input Current @ 1x gain: ± 4.375A

Dynamic Range @ 1x gain: > 110 dB

Dynamic Range @ 10x gain: > 105 dB

Dynamic Range @ 100x gain: > 95 dB

THDN (A-weighted): <-95dB 20Hz – 20kHz

Frequency Response: ± 0.5dB 20Hz – 20kHz

Maximum Input Voltage: ± 15V (do not exceed)

Input Impedance: 1MΩ

Constant Current Supply: 4mA / 21V excitation voltage

TEDS: IEEE 1451.4 Class 1

 



Class-D Amplified Outputs


Output Power (THDN <.1%): 10W continuous at 1kHz

Maximum Output Voltage: ± 13.5V

Frequency Response: ± 0.5dB 20Hz – 20kHz