Operating instructions

User Interfaces DMD20/DMD20 LBST Universal Satellite Modem
4-24 TM103 – Rev. 2.8
GENERAL (menu)
EXT FREQ (MHz) {Variable Through Data Rate}
Allows the user to select the external clock frequency in
MHz.
REF FREQ SRC {INTERNAL, EXTERNAL, HIGH STABILITY}
Allows the user to select the Frequency Reference
Source. High Stability is only displayed if the appropriate
hardware is detected.
REF FREQ (MHz) Allows the user to select the reference clock frequency
in MHz.
BB RELAYS {IBS ALMs, IBS/MNR ALMs, IBS/MNR/MJR ALM, RTS
ALARM}
IBS ALMs: Only supports IBS prompt and service
alarms.
NOTE: THE FOLLOWING MENUS ARE ONLY
SUPPORTED IN CLOSED NETWORK
IBS/MNR ALMs: Only supports IBS prompt and service
alarms and minor alarms
IBS/MNR/MJR ALM: Only supports IBS prompt and
service alarms, minor and major alarms.
RTS Alarm: Allows contact closures to be activated
when the carrier is configured for RTS signaling. Refer
to Radyne App Note 230 for addition information on
utilizing this feature as Keyline Operation.
TX ASYNC MODE (menu)
TX ASYNC MODE {ES-ES, ESC ENHANCED}
ES-ES is the normal IBS Async Channel. ESC
Enhanced can be selected in Closed Net and uses the
Overhead Signaling bytes in the IBS Overhead to pass
asynchronous data. This menu is not available when
SCC is selected.
ES INTERFACE {RS-232, RS-485}
Allows the user to select the interface type.
ES BAUDRATE {150 – 1024} For IBS ES to ES
{150 – 19200} For ES to ES Enhanced
{150 – 115200} For SCC Communications
ES to ES : Fixed Baud Rate based on IBS Network
Specification. Available rates are listed in Table 3-3.
ES to ES Enhanced: Allows user to select the Interface
Baud Rate. This selection will allow the user to set rate
as listed in Table 3-3.
SCC: Allows user to select the interface Baud rate.
Interface Rate must be equal to or greater than the In-
Band Rate.