Journeyman Member jdahl1979 is not online, or is invisible.
5/6/2015 11:15:56 PM
jdahl1979 Member #: 46318 Registered: 5/18/2006
Posted: 100 View all posts by jdahl1979
Company: Time Warner Cable Occupation: Maintenance Tech Location: NC
Odd upstream spectrum response
When looking at the return I see horns near the edge of the carriers.  Almost looks like batman.
I am using pathtrak or a full spectrum analyzer. HP/Agilent or sunrise telecom is what we use.  I've seen this before but it was rare and can't remember what the cause and affect is.  We have 1 QPSK at 16.5 and 4 DOCSIS US's - QAM16 at 19.4, QAM64 at 24.2, QAM64 at 30.6, and QAM16 at 37.  Any help is appreciated. Seems like everything is working fine, just odd.
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1 Replies
7/17/2015 7:22:53 AM
blueflint