Sperry Marine VISIONMASTER FT ECDIS-E, User Manual

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ECDIS-E User Guide Basic Operation of ECDIS-E
65934012 3-11
If a GLONASS device is providing position data it is likely to be configured
to send the data using the GNS sentence. Quality indicators when using
GNS are shown in the table below.
GNS - system mode indicator
Indicator Description Field Acronym
A Autonomous Normal
D Differential
Differential
E Estimated dead reckoning DR
F Real Time Kinematic Float FRTK
M Manual MAN
N Not valid -
P
GNS Precise
Prcs
R Real Time Kinematic RTK
S Simulated
-
Indicator values N and S are degraded values. No acronym
appears in the field but L/L values change to degraded colour
(yellowish orange).

The field to the right of the quality indicator denotes the datum
used for position data (defaults to WGS84). For information on
WGS-84 datum see `Factors affecting Chart Accuracy' in Chart
Facility.

The depth value as reported by the depth sensor. If no sensor data
is available a series of yellowish-orange dashes are shown in the
field. The field to the right of the depth value denotes the depth
source sensor; this may be either depth below keel (DBK), depth
below transducer (DBT) or depth below waterline (DBW).

The system time shown as the current date and time in hours,
minutes and seconds. This can be either UTC or Local (local time
may have a time offset applied), depending on the selection of
current time made in Time Management. The current selection is
shown next to the time.