Comtech EF Data DMDVR20 LBST Rev 1.1 - Manual (Page 49)

User Interfaces DMDVR20 LBST Satellite Modem
4-12 TM136 – Rev. 1.1
VOLTAGE SELECT {13, 15, 18, 20}
Allows the user to select the voltage required by the LNB
(refer to the LNB manufacturer’s specifications)
LNB VOLTAGE {ENABLED, DISABLED}
Allows the user to enable or disable the LNB supply
voltage.
4.3.4 Interface Menu Options and Parameters
TX 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.
TX CLK SRC {SCTE, SCT,}
Allows the user to select the Transmit Clock Source.
TX CLK POL {AUTO, NORMAL, INVERTED}
Allows the user to select the Clock Polarity for the Tx
Terrestrial Clock relative to the Tx Data. “Auto” detects
wrong polarity and automatically corrects. If G.703
Interface is selected, this selection cannot be changed.
SCT CLK SRC {INTERNAL, SCR}
Allows the user to select internal Source. SCT is the
internally generated SCT clock. SCR is the Rx Satellite
clock. SCR is used for loop timing.
DROP & INSERT (menu) (Reference Section 3.13, “Drop and Insert Mapping” in
this manual)
DROP MODE {NONE, T1-D4, T1-ESF, PCM-30, PCM-30C, PCM-31,
PCM-31C, T1-D4-S, T1-ESF-S.}
Drop mode may only be changed from none when the
drop and insert specification is in use.
MAP COPY {SRC Map Dest Map}
Allows the user to copy drop and insert maps. Tx Act
map is the drop map currently being used by the
modem. Source and destination may be any of the
following:
TX ACT, RX ACT, TX EDIT, RX EDIT,
USER 1 - USER 8, ROM 1 -ROM 8