© 2017 Viavi Solutions, Inc. | Viavi Confidential and Proprietary Information
104
DOCSIS 3.1 Signal Testing and Troubleshooting
Level variation
within
the OFDM channel band
provides insight into
frequency-response
related issues.
Spectrum
and
noise
identify portions of
a carrier where degradation may occur
and require possible profile adjustment.
Unstable MER with drops below
30dB
means only profiles running
256 QAM or lower will work.
Stable
MER better than 40 dB
means
QAM 2048 and 4096 will work.
In-Channel
Response
identifies
roll-off and excessive
ripple
Measuring MER across entire subcarrier list enables identifying
potential impairments with impact on higher level profiles
Summary of Contents for OneExpert CATV 630
Page 1: ...Extended Quick Start Guide v4 August 2019 OneExpert CATV 630 ...
Page 40: ...Slide 39 KF1 NEED UPDATE Kyle Feig 8 9 2018 ...
Page 62: ... 2017 Viavi Solutions Inc Viavi Confidential and Proprietary Information 61 Ingress Scan ...
Page 64: ...Slide 62 KF2 UPODATE NEEDED Kyle Feig 8 9 2018 ...
Page 71: ...Slide 68 KF2 UPODATE NEEDED Kyle Feig 8 9 2018 ...
Page 79: ...Slide 75 KF2 UPODATE NEEDED Kyle Feig 8 9 2018 ...
Page 99: ... 2017 Viavi Solutions Inc Viavi Confidential and Proprietary Information 95 Testing OFDM ...
Page 182: ... 2017 Viavi Solutions Inc Viavi Confidential and Proprietary Information 178 SWEEPLESS SWEEP ...
Page 183: ...www viavisolutions com ...