Comtech EF Data DMDVR20 LBST Rev 1.1 - Manual (Page 51)

User Interfaces DMDVR20 LBST Satellite Modem
4-14 TM136 – Rev. 1.1
RX SETUP (menu)
CIRCUIT
ID Allows the user entry of a Tx Circuit Identifier. Circuits
can be given up to an 11 Character alphanumeric
identity such as LINK1.
TERR INTERFACE STANDARD INTERFACE
{RS422 SERIAL,RS232 SERIAL, V.35}
Allows the user to select the Transmit Interface Type.
BUFF SIZE (msec) {0 - 64 msecs}
Allows the user to set the Doppler Buffer Size in msec.
BUFFER
CLK SRC Note: RX Sat only supported in Version A
The user must assign priorities to the clock sources. 1
being the highest priority and 4 being the last resort.
The menu has three fields; the first field is the name of
the clock source, the second field is the priority entry
area, and the last field is the depth of the list. In the
priority field, the up/down arrow keys will scroll through
the list displaying the names and the current priority.
When the desired clock name is displayed, the number
keys may be used to assign a priority value. Pressing
will re-sort the list. Do this until the clock
sources are prioritized in the order desired. Use the
left/right arrow keys to move the cursor to the depth field.
This field assigns the number of entries to use. The
number keypad or the up/down arrows can be used to
change the value.
Clock Source Priority SRC DEPTH
RX SAT 1 of 3
SCTE 2 of 3
SCT 3 of 3
EXT BNC 4 of 3
BUFFER CLK POL {NORMAL, INVERTED}
Allows the user to select the Clock Polarity for the Rx
Terrestrial Clock relative to the Rx Data.
TERR STREAMING {BYTE OUTPUT}
GENERAL (menu)
EXT FREQ (MHz) {Variable Through Data Rate}
Allows the user to select the external clock frequency in
MHz.
Only these will
be used
Will not be
used since
4>3