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CTA Com unica#iolns <br />Orange RaCE Test Report <br />5.0 Definitions And Process <br />5.1 Channel Performance Criterion <br />The channel performance criterion (CPC) describes the radio system <br />performance/understandability in terms of a specific threshold signal level (median <br />microvolt level) or threshold delivered audio quality value (DAQ). <br />5.1.1 Delivered Audio Quality <br />The delivered audio quality (DAQ) designations used in this document are defined by <br />TIA/EIA TSB-88-B as shown in TABLE 5-1. For the purpose of this test, we used a CPC <br />of DAQ-3. The DAQ field test measurement data were post-processed and the results <br />are included in the coverage maps provided with this report. The coverage maps indicate <br />three ranges: no access, DAQ 0 to 2.99 and DAQ 3 to 5. <br />Table 5-1 Delivered Audio Qualit Definitions <br />~- ., <br />..~ -~- <br />DAQ-0 No Speech Detected (CTA Definition) <br />DAQ-1 Unusable, speech present but unreadable; SINAD equivalent <br /> intelligibility: less than 8 dB <br />DAQ-2 Understandable with considerable effort; frequent repetition due <br /> to noise and distortion; SINAD equivalent intelligibility:. 12 d6 <br />DAQ-3 Speech understandable with slight effort; occasional repetition <br /> required due to noise and distortion; SINAD equivalent <br /> intelli ibili 17 dB <br />DAQ-3.4 Speech understandable with repetition only rarely required; <br /> some noise and distortion; SINAD equivalent intelligibility: 20 dB <br />DAQ-4 Speech easily understood; occasional noise and distortion; <br /> SINAD equivalent intelligibility: 25 dB <br />DAQ-4.5 Speech easily understood; infrequent noise and distortion; <br /> SINAD equivalent intelligibility: 30 dB <br />DAQ-5 Speech easily understood; SINAD equivalent intelligibility: <br /> greater than 33 dB <br />4. <br />