Modem Profiles Management Model Spectral Profiles
Copy values from an
existing profile:
Under Copy from Profile (bottom of the pane), choose from the list of predefined
profiles.
Click Get. The parameters will be updated.
Modify the required parameters to customize them to your needs.
Click OK. The new profile will be added to the US PBO Profile pane.
Verify that Enable PBO is checked-mark.
Set the electrical
length that will be
used for the
calculation of the
UPBO PSD mask:
For manual definitions - under EWL Mode, select Force. The electrical length (K10) is
the attenuation of the signal at 1MHz from the CPE to the cabinet. The range is 0 to
127 dB (0.1 dB steps).
For automatic calculation - choose one of the Auto parameters. The EWL is auto-
calculated according to the selected item (CO or CPE, minimum or maximum CO and
CPE).
Define two sets of
parameters (A and B),
for each of the three
upstream bands.
Set the Value A and Value B for US1, US2 and US3 fields. A and B values
depend on customer’s cable specifications and are used by the modem in the US
PSD mask calculations.
Note: the combination of 40/0 for A/B parameters disables UPBO in the band.
RFI Profiles
RFI Notching is used to suppress RFI (Radio Frequency Interference) disturbers. The used
spectrum excludes the interfered spectrum. RFI notches are necessary only when radio
services may disturb during operation. If RFI notching is desired, up to 16 notches can be
defined. Both the start and stop tones must be configured for each notch.
To create an RFI Profile
1. In the Network Element tree, under Modem Profiles and under Spectral Profiles,
select RFI. The defined profiles are listed in the pane according to their user assigned
description and characteristics.
NOTE: Use the Add/View/Delete Profile buttons to define and manage the profiles.
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