Specifications

General Operation
VTM Series Installation and Operation Handbook
3-74
Figure 3-52. ASI Display Diagram (ATSC Standard Selected)
Navigate the screen using the left, right, up, and down navigation buttons. Press the
LEFT and RIGHT navigation buttons to select the available video programs in the
stream. Information related to the programs appears as soon as the program is selected.
Press the UP and DOWN navigation buttons or turn the CURVED ARROW knob to
scroll through the available tables. The tables are determined by the ATSC or DVB
formats. If a program is removed from the transport stream, the associated program
indication turns red and “NO PROGRAM” appears.
If ATSC is the format for the stream, the tables that appear are:
• INFO (from the Program and System Information Protocol (PSIP))
• PAT (Program Association Table) - The PAT tells the decoder how many
programs are in a stream and points to the Program Map Tables (PMTs) that
contain the information where the parts for any given event can be found.
• PMT (Program Map Table) - The PMT points to the component video, audio, and
data streams that make up the program. Parts in this context are the video stream
(normally one), the audio streams, and the data streams.
• MGT (Master Guide Table) – The MGT defines the type, packet identifiers, and
PSIP tables in the transport stream. Only the System Time Table (STT) is not
defined in the MGT tables. Press ENT and the UP and DOWN navigation buttons
to scroll through the tables.
• VCT (Virtual Channel Table) – The VCT tabulates virtual channel attributes for
tuning.
• RRT (Region Rating Table) – The RRT indicates the ratings for various countries
• STT (System Time Table) – The SST indicates the time