Gigabit QAM Modulator Model D9479 Hardware Installation and ...

Chapter 5 Troubleshooting the GQAMLCDDescriptionInput (1-5)packets weredumpedSee also Input(1-5) FIFOoverflow.OUT (1-16)FIFO overflowAlarmLevelProbable CauseMinor FIFO overflow occurred and packetdata has been lost. This indicatesone or more of the followingconditions:• Too many sessions definedfrom the DNCS for the GQAM• The data rate as defined formthe DNCS for the GQAMsession is too low, which alsomeans that the data rate of theASI input to the GQAM is toohigh• Hardware problem• Incorrect modulation modeMinor FIFO overflow occurred and packetdata has been lost. This indicatesone or more of the followingconditions:• Too many sessions definedfrom the DNCS for the GQAM• The data rate as defined fromthe DNCS for the GQAMsession is too low, which alsomeans that the data rate of theASI input to the for the GQAMsession is too high• Hardware problem• Incorrect modulation modeCheck and Correct• Reduce the data rate ofinput to the GQAM bydoing the following:– Reducing amount ofincoming data– Reducing amount ofdata added to stream– Increasing modulationmode• Run the Doctor Report totroubleshoot connectivityissues• Contact Cisco Services• Reduce the data rate ofinput to the GQAM bydoing the following:– Reducing amount ofincoming data– Reducing amount ofdata added to stream– Increasing modulationmode• Verify and correct sessionrate targets and thresholdvalues• Contact Cisco Services98 78-745431-01 Rev E