Configuration and Operations
LD900 Installation and Oper ations M anual
50
4.6.5.2
Configuration > Heading > Heading Offset
The heading offset is often referred to as the C-O (computed minus observed). The offset will adjust for any
misalignment of the GNSS antenna baseline and the vessel centre line. Entering an accurate heading offset is
also an important configuration for INS enabled system. Care should be taken not to apply the heading offset
within the LD900 and the interfaced survey software or DP system.
Use the arrow keys to select
Heading Offset
, followed by tick. Then use the arrow buttons and tick to enter a
value between -180.00° and 180.00°. Use the arrow keys to select
Apply
, right to select
Yes
and tick to apply
the change:
4.6.6 Configuration > INS
LD900 and LD900M models interfaced to an appropriate IMU
Type via a specified
IMU
Port will be capable of
INS. IMU type, port and system offsets must be correctly entered before the INS solution will start to initialise.
4.6.6.1
Configuration > INS > IMU Type
While
IMU Type
is selected click on
Edit
and using the arrow keys select
None
(default),
ISA-100C
or
uIMU
as
required, followed by tick. Then use the arrow keys and tick to select
Apply
, right to select
Yes
and tick to apply
the change:
