Audio Test Solutions - U8903A Audio Analyzer

This solution is to observe the quality of the signal transmitted from radio by measuring the parameters below:

- Amplitude Level (Signal Analyzer)

- Frequency Response (Signal Analyzer)

- THD+N (Signal Analyzer)

- SINAD (Signal Analyzer)

- Carrier Power (Signal Analyzer)

- Modulation Rate (Signal Analyzer)

This solution is to observe the quality of the signal reception/sensitivity from radio by measuring the parameters below when the SINAD reading is about 12 dB.

- Amplitude Level (Audio Analyzer)

- Frequency Response (Audio Analyzer)

- SINAD (Audio Analyzer)

- Carrier Power (Signal Generator)

- FM Deviation (Signal Generator)

This solution is to observe the quality of the signal being amplified by the audio amplifier by measuring the parameters below:

- Amplitude Level (Audio Analyzer)

- Frequency Response (Audio Analyzer)

- Phase (Audio Analyzer)

- THD+N (Audio Analyzer)

- SNR (Audio Analyzer)

- Dynamic Range (Audio Analyzer)

This solution is to observe the quality of the signal reception / sensitivity from radio by measuring the parameters when the SINAD reading is about 12 dB.

- Amplitude Level (Audio Analyzer)

- Frequency Response (Audio Analyzer)

- SINAD (Audio Analyzer)

- Carrier Power (Signal Generator)

- FM Deviation (Signal Generator)

This solution is to observe the transmitted signal (transmitted together with RDS signal) received by the car radio including the other functionality test parameter as listed below:

- Amplitude Level (Audio Analyzer)

- Frequency Response (Audio Analyzer)

- THD+N (Audio Analyzer)

- THD (Audio Analyzer)

- L/R channel separation (Audio Analyzer)

- Maximum SNR (Audio Analyzer)

- RDS Sensitivity

This solution is to observe the receiving signal via Bluetooth (transmitted with other cell phone protocol signal e.g. GSM, WCDMA, etc.) with audio signal. Test parameters include:

- Amplitude Level (Audio Analyzer)

- Frequency Response (Audio Analyzer)

- THD+N (Audio Analyzer)

- SINAD (Audio Analyzer)

This solution is to check the audio quality from the DVD player or the Blu Ray player. This is a testing done in Final QA Inspection. Test parameter includes:

- Amplitude Level (Audio Analyzer)

- THD+N ratio(Audio Analyzer)

- SNR (Audio Analyzer)

- Signal Flatness (Audio Analyzer – Sweep Function)

- Dynamic Range (Calculation)

- *Need to apply A weighting filters in the measurement.

This solution is to check the audio quality and video quality for TV. This is a testing done in Final QA Inspection. Test parameter includes:

- Amplitude Level (Audio Analyzer)

- THD+N ratio (Audio Analyzer)

- SNR (Audio Analyzer)

- Signal Flatness (Audio Analyzer – Sweep Function)

- Defects on the display (Display Tester):

- Dead Pixels

- Misalignment

- Color