CHAPTER 7: MUX TAB - CONFIGURATION
7-2
MDU Solutions
®
– DVIS/DVISm - Digital Video Insertion System & Mini Digital Video Insertion System - Installation & Operation Manual
slot 2 or 5. IF SPTS IP output is desired, the only mode this is supported under is ‘Ethernet Only’. The supported selections
are:
•
RF Only
•
Ethernet only
•
RF & Ethernet
FYI: The Ethernet output is enabled here but is configured on the
Tab - Configuration” on page 12-1
7.2.4 Add & Drop Mode:
This check box selects whether the ‘Demod & Mux Settings’ tab is enabled. The ‘Demod & Mux Settings’ are required if a
demodulator is installed. After activation see
“Demod & Mux Settings Tab - Configuration” on page 10-1
. After checking the
box click
Submit
button to apply the change.
7.2.5 Dynamic PSI Monitoring:
Selects whether Dynamic PSI (Program Specific Information) monitoring is enabled. This will instruct the unit to monitor the
incoming PSI tables for changes and reanalyze the stream when they occur. This feature is active in add/drop mode only.
7.3 Legacy STB Settings
7.3.1 Lock to V-Sync:
The default setting is ‘Lock to Internal Sync’; the check box is not selected. Issues with
vertical sync quality will usually manifest as constant or occasional vertical rolling of
the image. The quality of the baseband vertical sync signal can be impacted by a number of factors including source quality,
cable length, connectors and the presence of distribution amps. Using the internally generated timing signals is usually
the most reliable method of sync recovery but in some circumstances better results maybe achieved by using the external
baseband sync signal if vertical rolling is experienced. In this case click the selection box. This setting is not directly related
to legacy STBs.
7.3.2 QBA & AF Enable:
Selects whether QBA and AF are enabled. Necessary only for some legacy set top boxes. Default; the check box is not
selected.
7.4 DVB
®
SI Settings
These settings are not always required to be used for typical operation. They provide
additional features if required by system operator.
7.4.1 DVB-SI/PSIP:
This setting is a drop down menu with preset options.
•
None
•
DVB-SI
This selection enables support for passing/updating the SDT (Service Description Table) and NIT (Network Information
Table) tables through the multiplexer in a drop & insert application as well as creation of SDT/NIT tables in encoding
mode. It may be necessary in some installations to enable these tables to be received by the end user when tuned to
the DVIS programs. In add/drop applications the SDT/NIT tables must be existing in the incoming QAM. If the tables
do not exist, do not attempt to enable this feature.
•
PSIP
This selection enables insertion of Virtual Channel information as per PSIP standard, see
.
7.4.2 Network ID: [1-65535]
This is the Network ID as listed in NIT.
Figure 7-3:
Legacy STB Settings
Figure 7-4:
DVB SI Settings Section