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CTA Communications <br />Orange RaCE Test Report <br />Table 6 -2 RaCE Mobile Location Equipment <br />6.2 The RaCE Test Sequence <br />When a test sequence occurs, the mobile unit transmits a pre- recorded message to the <br />stationary unit. The stationary unit receives the mobile's message and evaluates it for <br />talk -in DAQ. When the mobile unit finishes transmitting, the stationary unit transmits a <br />pre- recorded message to the system. The mobile unit receives the stationary unit's <br />message and evaluates it for talk -out DAQ, and concurrently records the RSSI. The <br />stationary unit is located close to the radio repeater site, to provide a strong and stable <br />signal area and therefore be "captured" by the site under test. <br />6.3 The RaCE Test Set Calibration <br />The RaCE software includes a proprietary algorithm that evaluates DAQ based on the <br />noise and distortion in the received audio of the RaCE test message. DAQ is not based <br />on signal strength or on bit error rate. Using telecommunication professionals, CTA has <br />calibrated (and continues to do so) the effects of noise and distortion on DAQ scores, and <br />uses this input to validate (and occasionally revise) the proprietary algorithm inherent in <br />the RaCE software. RSSI is measured by receivers calibrated as part of the test setup. <br />The RSSI receivers were calibrated using the procedures listed in APPENDIX A. The <br />verification equipment used for calibrating the RSSI receivers is listed in TABLE 6 -3. <br />-15- H MM I AECOM, <br />