Dgps - Differential Correction Input Control - Leica MX400 Operating Instructions Manual

Operator's Manual
measurement you are most interested in. If your boat draws
about the same amount of water each time you use it, you may
want to put in the difference between the sensor and the height
and the waterline height. If your boat's draw changes from one
trip to another, as would be the case when the receiver is used on
a frieght ship, you may want to put in the difference between the
sensor and the lowest point of the ship's hull.
Shallow Alarm Active - allows you to receive an alarm if the sensor
receives depth data lower than the limit you set in Alarm Limit
(below). The default setting is Yes.
Alarm Limit - allows you to specify at what depth you want a alarm
to activate. This alarm limit is enabled by the Shallow Alarm
Active selection of Yes.
Alarm If No Data - Allows you to receive an audible and visual
alarm if NMEA 0183 data is not being received on the data port
at regular intervals (typically every few seconds). The available
choices are Yes and No (default).
Input Sentence - Specifies the NMEA 0183 data sentence to read
the depth data from. The available choices are Any (default),
DPT, DBS, DBT, or DBK sentence. It is better to specify the
appropriate sentence, because more than one method of report-
ing depth may be available on the port.
The window in the lower protion of the screen allows you to see the
depth data that is received on the data port (Input:) and the data that
is actually displayed in NAV 4 (Used Value:).

DGPS - Differential Correction Input Control

This screen controls the implementation of DGPS corrections to the
receiver. All receiver's can receive and apply DGPS corrections
from the external port. Only models which have internal beacon
receivers, can track beacon DGPS transmitters. Use the appropriate
settings for your configuration.
118
Configuration
Version 3.3