Release 1
DAMS-NT DigiRIT Operation Manual
12/14/2012
Microcom Design, Inc.
31
Figure 19: Virtual Channel Setup Menu
3.2.2.3.
Message Setup Menu
Two settings that can only be configured via the terminal interface are related to the DAMS-NT
message interface (see Section 1.3.2). These options are accessed through the Message Setup
menu as shown in Figure 20. The first option determines how messages received without a Baud
rate specifier are handled, while the second option determines the utilization of the Slot Number
field in the DAMS-NT header (see Section 1.3.2.1).
3.2.2.3.1.
Unknown Baud Rate Option
While most DCS messages received in the LRIT stream have the Baud rate specified, some do
not. The messages that do not specify the Baud rate are typically DCS informational messages;
since these messages are system generated and not actual DCP transmitted messages, the Baud
rate is not truly applicable.
The DigiRIT can handle messages without the Baud specified in one of two ways. First, the
DigiRIT can simply parrot this fact by reporting the DAMS-NT Baud field as ‘0000’, indicating
the Baud is “unknown” or “undefined”. However, some DAMS-NT Clients will not accept this
value and will report an error if the Baud rate is not one of the three active DCS message baud
rates; i.e. ‘0100’, ’0300’, or ‘1200’. As such, the DigiRIT also includes an option to report the
Baud rate as the most common value of ‘0300’ if the actual Baud rate is not present in the LRIT
data.
If the “Allow Unknown Baud” option is enabled or set to “ENB”, the DigiRIT will report a
‘0000’ in the DAMS-NT header (see Section 1.3.2.1) for messages received without the baud
rate specified. The default setting is disabled or “DIS”, in which case the DigiRIT will report
‘0300’ in the DAMS-NT header when the Baud rate is unknown. To change this setting, the user
must access the Message Setup menu and at the selection prompt type “B=xxx”, where “xxx” is