POS MV V5 Installation and Operation Guide
Fault
Identification
9-2
In addition to the above hardware, the POS MV includes all cables to interconnect the components of the
system and certain additional cables that can be used to connect to external equipment.
Previous sections of this manual describe the cables, the connection ports and the data formats; refer to
the Table of Contents at the beginning of the manual or the Index at the end of the manual for specific
items. The Handling Precautions on page 2-1 describes the precautions that should be exercised when
unpacking and installing the POS MV subsystems.
Inertial Measurement Unit
The IMU contains sensitive and expensive solid-state
accelerometer and gyro components. Permanent damage to
these components will result if handled roughly.
The IMU includes an orthogonal array comprising three accelerometers and three gyros. The
accelerometers sense translational acceleration along one of three axis (
x
,
y
, and
z
) and the gyros sense
angular rate around each axis. Incremental velocities and angles are output across a digital interface to
the PCS.
The IMU is a sensitive device and must be handled carefully to prevent damage to the sensing elements.
Refer to the Inertial Measurement Unit description on page 2-1 for instructions pertaining to IMU handling
and care.
GNSS Antennas
Do not place metallized labels on the radome. Signal
attenuation will result.
The GNSS antennas are solid state devices with no moving parts. They are rugged and reliable and, with
a little care, will provide long-term trouble free operation. Follow the steps outlined in the GNSS Antennas
topic on page 8-7 to maintain their operating efficiency.
To prevent damage caused by moisture ingress, ensure that the TNC connection between the GNSS
antenna receptacle and its mating cable plug is waterproof. Use a good waterproof tape and sealant.
POS Computer System
Note
: An optional field support kit includes a replacement PCS.
The PCS contains a computer module, an interface module, two GNSS receivers, and power supplies for
the internal electronics and the remote IMU. Constructed of rugged, industrial grade components, the
PCS should be handled with care to minimize risk of damage.
