Choosing A System Location - NorthStar 961 Install Manual

SECTION TWO - Installation
Using DGPS with
an AN150 and
8410 ACU
Using the DGPS
antenna
(AN205-P)
Pre-installation
testing

Choosing a system location

Mounting the
control head
Page 8
length of cable, and do not cut it to less than 20 feet! Be sure that all
cable connectors are securely fastened, and that the cable itself isn't
subject to any tight bends.
For complete details about installing the AN150, see "Installing the
antenna" beginning on page 15.
If the 961/962 is equipped with a differential receiver, and you're using the
AN150 GPS antenna, not the AN205-P GPS/DGPS combo antenna, this
receiver must be connected to a Northstar 8410 differential Antenna
Coupling Unit (ACU). The ACU's four-foot whip antenna should be
mounted as high as conveniently possible (but not at the highest point),
and as far away as possible from other antennas. The ACU can be
mounted on a standard marine antenna mount (1" diameter, 14 threads
per inch).
For complete details about installing the AN150/8410 ACU, see
"Installing an 8410 ACU (for use with the AN150 only)" beginning on
page 24.
For complete details about installing the AN205-P, see "Installing the
antenna" beginning on page 15.
Northstar recommends that you perform a pre-installation test of the
entire system before installing it on the vessel. This ensures that the
equipment is fully operational, and allows the GPS receiver to collect its
almanac and ephemeris data for the installed location, which results in
less on-board installation time.
The 961/962 consists of two major components: a processor and a control
head. The 961/962 supports two fully functional control heads (the
second head is optional).
Be sure to keep the following safe compass distance
from the 961/962: 1.0 m standard, 0.8 m steering.
You can either yoke- or flush-mount the control head. Use the
yoke-mount kit as a framework for holding the control head, or flush
mount the head directly onto a flat surface of your choice. Using the
CAUTION!
961/962 INSTALLATION MANUAL Revision A