User guide

MS-DMT Guide v1.04
Released 05-30-2014
79
MODE
The MODE pull down provides for all over the air modes which can be used with both the
internal display window as well as an external terminal. At present there are three mode
selections provided: ASYNC_EOM, SYNC_EOM and SYNC_NOE (no EOM).
ASYNC_EOM is the default mode when the program is run for the first time or whenever the
DMT.DAT file is missing or corrupted as ASYNC_EOM is the most commonly used of the MS110A
modes in MARS.
When the DATA PORT is active, which uses RS-232 Asynchronous interfacing via either a
hardware port or VCP port, a “High Speed ASYNC”, SYNC modes compatible mode of operation
is provided where start and stop bits are not sent over the air, there is no need to make use of a
Synchronous Serial Port adapter as is required with conventional SYNC modes of operation via
hardware modems. There are hardware modems with “High Speed ASYNC” as detailed in MIL-
STD-188-110B as well so as to achieve SYNC with an asynchronous serial port on the PC.