Appeal No. 2003-2027
Application No. 08/804,908
measured signal levels received from the head end test unit and
the signal levels the remote test unit measures, the remote test
unit determines the frequency response of the CATV system.
See Chappell, column 2, line 58 through column 3, line 17. We
fail to find that Chappell teaches sending an error message in
the forward direction if no response message is received on said
return frequency and said power level is greater than a threshold
value. Furthermore, we fail to find that Chappell teaches means
for monitoring said forward frequency for an error message
including a frequency spectrum and means for displaying said
frequency spectrum.
1010
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