Dr - Dead Reckoning - Leica MX400 Operating Instructions Manual

Operator's Manual

DR - Dead Reckoning

DR, or Dead Reckoning, is an added navigation capability the
receiver can use, should GPS become unavailable, when appropri-
ate compass/heading and speed log sensors are connected and
activated. Set the following CFG menus along with the DR screen:
Compass - Sets the input port number, compass type (true or
magnetic), compass deviation table, and the input NMEA 0183
sentence to derive the compass information from. The NMEA
0183 sentence should be specified, because several NMEA 0183
sentences may contain compass information. This provides you
the capability of knowing exactly what the compass source is.
Log - Sets the input port number, sensor type (pulse or NMEA
0183), sensor correction factor, alarms, and a correction factor
(if needed).
Set & Drift - Sets the mode to manual or automatic (derived from
input sensors). Sets the time-out before applying calculated
values. GPS calculated values are used prior to the time-out
period.
SJB - Configures the Smart Junction Box (SJB), an optional analog
to digital gyro interface converter, for input of compass and
speed log data to the receiver.
DR mode is either set to Yes or No (default). You also determine
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Configuration
Version 3.3