User manual

M3#User#Manual#
13"
• Selecting DIAGNOSTICS activates the DIAGNOSTICS option to display the HD Radio
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broadcast parameters described below as well as initiate collection of bit-error rate and block-
error rate when a BER-BLER test vector is being broadcast.
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• Carrier-to-noise ratio and signal-to-interference ratio values are displayed on first
DIAGNOSTICS screen.
Sample First DIAGNOSTICS Option VFD Display
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Carrier-to-Noise Ratio (Cd/N0) - Displays the carrier-to-noise ratio, where Cd refers to the total
power in both digital sidebands, and N0 refers to the noise spectral density. This measurement
is calculated in a 1 Hz bandwidth.
Signal-to-Interference Ratio - Displays the signal-to-interference ratio in dB.
• Momentary push of UP scrolls to next DIAGNOSTICS screen that displays audio signal-to-noise
and QI values.
Sample Second DIAGNOSTICS Option VFD Display
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Signal-to-Noise Ratio - Displays the audio signal-to-noise ratio in dB.
QI Value - Displays the quality of the HD Radio
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digital audio signal in a range from 0-15. A
value of 15 represents the highest audio quality.
• Momentary push of UP scrolls to next DIAGNOSTICS screen that can initiate Bit Error Rate
Mode. Push SELECT to enter Bit Error Rate Mode.
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