Specifications

3-92 888-2857-001 5/9/13
WARNING: Disconnect primary power prior to servicing.
Section 3 Operation
Platinum VAX-C Series
3.12 Status Screens - ATSC Modulation
Figure 3-58 ATSC Main Status Screen (right)-ATSC Modulator Status Screen 1 (left)
Figure 3-59 Xmtr Home>Exciter Home>Status>ATSC Modulator (screen 1)
Field Explanation
Primary ASI
Green if present. Red if faulted or absent.
If transport stream input is present, but are not selected for transmission, its
indicators will be yellow. Typically, only two inputs used at a time. See Section
2.7.4 to determine which two inputs will be used.
Primary SMPTE
Auxiliary ASI
Auxiliary SMPTE
MPEG Packets in
Buffer
Incoming MPEG data is stored in a FIFO buffer. For MFN operation, the usual
FIFO mid-buffer depth is 1304 packets. In SFN operation, the number of packets
held in the buffer is dependent on the emission timing requirements. In either case,
the number of packets in the buffer should be relatively stable.
MPEG Sync Lost
Count
Number of times the exciter's input circuit has lost synchronization with the
incoming MPEG sync to the extent that the circuit had errors and had to reacquire.
M/H Data Present Yes or No. If the exciter has MDTV mode enabled, this will indicate whether or
not mobile DTV is indeed present in the transport stream.
Softkeys
Export Fault Log Save fault log to file for export. Use File>Save Page to save HTML or
text.
Setup Displays Setup screen.
Fault Log Displays Fault Log.
Exciter Home Displays Exciter Home screen.