Actelis Networks ML700 - Configuring Impulse Noise Monitoring Profiles

Modem Profiles Management Model Quality Management
6-30 User Manual ML700
Table 33: Configuring Impulse Noise Monitoring Profiles
To....
Do this....
Initiate a new profile:
 Choose from the available Profile AIDs.
 Assign the profile an identifiable Description (i.e. ADSL2 Plus...)
 Do one of the following: either upload values from an existing file and modify
them according to the following step, or define each parameter as described in
the next steps.
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 INP Monitor Profile pane.
Set the US=DS
Checkmark Set Upstream Values as Downstream if US and DS settings are
identical.
Set the counting of the
two histograms
according to the
following parameters:
 Inter Arrival Time Offset (INMIATO) - specifies the minimal duration of
impulse (cluster) that would be counted at bin 0 of INMIAT histogram.
 Inter Arrival Time Step (INMIATS): specifies the time step in INMIAT
histogram, the step size is 2^INMIATS
 Cluster Continuation (INMCC): specifies the maximal gap between bursts of
impulses that would still be considered as one cluster
 Equivalent INP Mode:
o Do not use Clusters - Each consecutive set of severely degraded symbols
is counted as a separate impulse event
o Upper bound – Histograms provide upper bound for the required INP
o Lower bound – Histograms provide lower bound for the required INP
o Best Estimation – Histograms provide best estimation for the required
INP
An INM Setting Example is given below.
Setting:
 INMIATO is set to 10 (valid values are 3-511, default is 3).
 INMIATS is set to 3 (valid values are 0-7, default is 0).
 Cluster Continuation is set to 4 DMT symbols (valid values are 0-64, default is 0).
Result:
 Cluster Continuation=4 implies that the burst of impulses that doesn't cease for more than
1ms (4 symbols as configured by Cluster Continuation) are considered as one cluster and
counted as a single impulse noise in the Impulse Noise Histograms.
 INMIATO=10 implies that impulse clusters with a gap of up to 10 DMT symbols (2.5ms)
would be counted in INMIAT histogram at bin 0, impulses with longer gaps would be
counted at higher bins according to the INMIATS value.
 INMIATS=3 implies that each bin the INMIAT histogram collects the data to bins of
2^3=8 symbols. In this example the first bin counts cluster occurrences with inter-arrival
time of up to 10 symbols, the second bin counts occurrences of up to 18 (10+8) symbols,
the next 26 symbols (10+2x8), etc.