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Minimum and Optimal Amplitude Level Adjustment
When a Test ID Terminator Tone is recognized, its amplitude level is checked to ensure that it is above a minimum “Measurement Threshold” required for accurate operation. To ensure adequate margin, the user must adjust the system under test such that the over-the-air Test ID tone amplitude level is within the acceptable ranges listed below. Note that the system reports the Test ID tone level in the Info1 parameter of the Test ID Found event.
- Speech: -15 dBFS to -3 dBFS
- Music: -20 dBFS to -3 dBFS
In addition to the acceptable amplitude ranges listed above, see "Audio Volume/Level Calibration" and "Adjusting for Optimal Volume Levels" for the optimal over-the-air amplitude levels and description of how properly to adjust the levels .