Comtech EF Data CME-5000 Manual - Manual (Page 45)

Digicast Micro Encapsulator (MENCAP) Revision A
Device Management via User Interfaces MN/MENCAPEDC.IOM
The PSI Configuration page has the following configurable parameters:
Enable
The “Enable” PSI Boolean allows the user to enable or disable the PSI
information. Most multiplexers will require the PSI information to be present to
identify the input programs.
Rate
The rate in tenths of a second the PSI tables (PAT/PMT) will be transmitted to
the network. For example, 4 is a rate of 400ms.
PMT PID Base
The first PID number that will be used to announce the available programs to the
network.
Transport Stream ID
The transport stream ID provides the identification of this TS from any other
multiplex in the network.
Network ID
The network ID provides a means of identifying the particular physical network
over which the tables are being transmitted.
NIT Rate
The rate in seconds that will be used to define the frequency with which the
Network Information Table is transmitted.
Types of Tables
This provides the option to select between MPEG-2, DVB and ATSC tables:
MPEG-2 – Supports PSI, specifically, PAT and PMT. The ME can be
configured to output no tables or at very minimum the MPEG-2 tables known as
the Program Specific Information (PSI) tables. This is typically the bear
minimum required to connect to a multiplexer. The PSI information prevents
PIDs from being identified as “unknown” or “ghost PIDs.”
ATSC – The MENCAP 50 does not support ATSC table, but changes the data
identifier in the encapsulated Multi-Protocol Encapsulated packet to a 0x3F for
ATSC, instead of 0x3E for DVB encapsulated datagrams.
DVB – Supports NIT in addition to MPEG-2 DVB tables are identified by the
type of NIT announced. This allows for the selection of the NIT based upon
network type, namely, satellite (DVB-S), cable (DVB-C), or terrestrial (DVB-T).
By clicking on the appropriate link, a list of configurable parameters is displayed
for that particular network.
By clicking the PSI link, the web page returns to the original ‘PSI’ settings but
with the specific network type identified below the other settings.
4-7