Comtech EF Data SDM-2020 - Manual (Page 58)

SDM-2020 Satellite Modulator Revision 7
Front Panel Operation MN/SDM2020M.IOM
5-16
5.6.2.7 CONFIGURATION:INTERFACE:DVB FRAMING TYPE
DVB FRAMING TYPE
188
Note: Pressing in this menu turns off TX-IF Output.
Use this menu to program the DVB framing type for 188, 204, or NONE. The framing
type describes the format of the data into the modulator. The equivalent serial data rate at
the data interface connector is based upon the clock rate of the incoming data stream.
Upon entry, the current status of the DVB framing type is displayed.
1 Press [ ↑] or [↓] to make the selection.
2 Press to execute the change.
When is pressed to change the framing type, the transmitter is automatically
turned off to prevent the possible swamping of other channels. Another menu is displayed
that allows the operator to turn the transmitter on again by pressing .
5.6.2.8 CONFIGURATION:INTERFACE:INTF LOOPBACK
INTF LOOPBACK
OFF
Note: Available with either ASI/RS422, G.703, or ASI/LVDS interface installed.
Test mode loops the input data back to the output of the terrestrial interface. Data
continues into the modulator. The yellow TEST MODE LED is illuminated when
Loopback is turned ON. (See Interface Loop Thru as specified under Utility Interface for
additional description.)
Upon entry, the current status of the Interface Loopback is displayed.
1 Press [ ↑] or [↓] to make the selection.
2 Press to execute the change.