TB8100 Service Kit User’s Manual Operational Information 73Clock reference The Clock reference box indicates what is providing the base station with areference frequency (from which it derives the channel frequencies).Monitoring the ReciterThe Reciter form (Monitor > Monitoring > Reciter) lets you monitor theRSSI and SINAD of the received signal and the audio levels on the input andoutput lines. Each level is displayed graphically as a gauge. The equivalentnumeric value appears under the gauge heading. If the value is red, it hasexceeded the maximum or fallen below the minimum that the gauge candisplay.The first box in the form displays the internal name of the reciter.Alarm status The Alarm status box indicates whether the reciter has an alarm. If the LED isred, select Monitor > Alarms > Current Status to see which alarm is active.Received signal The Received signal area displays the RSSI and SINAD levels. (If you want toknow the equivalent RSSI in microvolts, see “Converting Between Microvoltsand dBm” on page 88). The SINAD is only an approximation, but it isreasonably accurate if a receiver filter with a de-emphasised audio response isselected.Input lines The Input lines area displays the audio levels for the balanced and unbalancedline inputs.Option DescriptionInternal The base station’s own clock signal is the reference source.External External equipment is providing the reference source via a BNCconnector at the rear of the reciter. The Service Kit must tell thebase station whether to expect 12.8 or 10 MHz (Configure >Base Station > Miscellaneous).
