POS MV V5 Installation and Operation Guide
TrueHeave
Operation
6-2
which provides the TrueHeave output, the equivalent of the real-time heave solution and the applicable
Time of Validity (TOV) signal. Group 113 contains the associated performance metrics.
Groups 111 and 113 data are output on the real-time Ethernet data port at a rate of 25 Hz to provide
sufficient resolution on the Heave Data display, see Figure 53. It may be selected for internal or Ethernet
logging.
Note
: The heave data output, in real-time, is in no way affected by the addition of TrueHeave; it can and
should continue to be used as normal.
Figure 53: POSView Heave Data
TrueHeave Procedure
Use the following procedure to enable the TrueHeave feature prior to its first use.
1. Initialize POS MV ensuring that all pre-set user accuracy values are acceptable. This is indicated
by green light buttons adjacent to the Attitude, Heading, Position, Velocity and Heading labels in
the
Accuracy
pane on the MV-POSView Controller, see Figure 54.
2. View real-time heave and TrueHeave data by selecting
View, Heave Plot
, see Figure 53. Due to
the delay inherent in creating the TrueHeave solution, the heave data plot remains blank for the
first three minutes after initialization.