Specifications

5/9/13 888-2857-001 3-43
WARNING: Disconnect primary power prior to servicing.
Section 3 Operation
Platinum VAX-C Series
DFS Pulse out 10
MHz port
Choices are Enable and Disable. Enabling this function will disable the 10 MHz
signal coming out of the front panel 10 MHz port and replace it with a 77 uS pulse
that is coincident with the emission of the Data Field Sync portion of the ATSC
signal. Using this signal along with the 1 PPS signal, one could use an oscilloscope
to adjust emission timing between two or more single frequency network sites.
A/110 Fld Rate Side
Ch Ctrl
Choices are Enable and Disable. ATSC's A/110 standard defines a side
communication channel, called the field rate side channel (FRSC). The FRSC may
be used to populate certain symbols in the data field sync or communicate other
information to the modulator e.g. configuration changes. However, information to
populate the FRSC must be sent from the upstream Distributed Transmission
Adapter or a Mobile DTV multiplexer. This control governs whether or not the
FRSC information is used. If the upstream adapter is not inserting the FRSC
information, set to Disable.
Softkeys
Status Displays Status screen.
Setup Displays Setup screen.
Exciter Home Displays Exciter Home screen.
Table 3-21 Xmtr Home>Exciter Home>Setup>ATSC Modulator>Next (screen
2)
Fields Explanation