Note:
Often upstream equipment will not transmit multicasts unless join messages have been
received, and in this case it will usually not be possible to detect multicasts automatically. Select
predefined threshold templates that seem appropriate for the signal. Note that the sequence of
the multicast definitions will be reflected in monitoring, so order the multicasts correctly if required.
Also note that ETR 290 monitoring for Ethernet streams is disabled by default, so if this is required,
it will have to be enabled by the user (on a per-stream basis).
2. Define stream page name(s) in the Setup — Pages view (not strictly necessary).
3. Join multicasts in the Multicasts — Join view or in the Multicasts — Streams view.
5.2.3 OTT Input (OTT Engine Option Only)
1.
Define the OTT channel manifest URLs and channel names in the
OTT — Channels
view. Leave
the Threshold and VBC threshold settings at default values for now. Remember to tick the Enable
box in the dialog box. If you have multiple OTT engines installed (1 to 25 are allowed) then select
which engine to assign to the channel. Any number of OTT channels can be assigned to each
OTT engine. Each engine works in parallel to each other.
Note:
When monitoring both multicast (UDP) and OTT (TCP) traffic, we recommend using different
network interfaces. Mixing the two traffic types on the same network can have unwanted impact on
the monitored signals. The interface used for OTT traffic is controlled using the
Setup — Routing
view.
2. Inspect the OTT monitoring progress using the OTT — Active testing dialog. Useful information
on OTT monitoring can be found in Appendix C.
5.2.4 Demodulator Inputs
1.
Define one frequency in the
COFDM/QAM/VSB/RF/SAT — Tuning setup
view. As a start the
threshold templates named
Default
can be used (for ATSC signals use
ATSC Default
as the ETR
threshold).
2. Verify proper reception of signal under the COFDM/QAM/VSB/RF/SAT — Status view.
3.
Use the
Import tuning from NIT
feature to automatically add frequencies as signaled in NIT or
add the remaining frequencies manually.
5.3 Monitoring
When input signal parameters have been set, the signals may be monitored.
For Ethernet multicasts the relevant monitoring views are
Main
,
Alarms
,
Multicasts
,
MW
,
Traffic
and
Ethernet
. If the probe is equipped with the ETR 290 and/or the OTT option then the views
ETR 290
and
OTT are of relevance as well.
40 VB2xx GigE User’s Manual version 5.4
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