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958 Installation Manual, Rev. A1 Page 3
SECTION TWO: Installing and
wiring the 958
Bench-testing the 958
Northstar recommends bench-testing the 958 before installing it onto the vessel. Bench testing
ensures that the equipment is fully operational, and lets the 2201/2301 antenna or 2701 beacon
receiver collect the current almanac and ephemeris data for the installed location, which results in
less on-board installation time.
Mounting the 958
Choosing the best 958 location
Choose the mounting location carefully—before you drill or cut. The display screen is high-contrast
and anti-reflective, and is viewable in direct sunlight, but for best results, install the 958 out of direct
sunlight. See the figure below for additional mounting recommendations.
WARNING!
Before starting the installation, be sure to turn power off. Further,
Northstar highly recommends keeping power off while you’re installing
the system. If power is left on or turned on during the installation, fire,
electrical shock, or other serious injury may occur. Be sure that the
voltage of the power supply is compatible with the 958’s voltage rating
of 10 to 36 volts DC. Connecting to the wrong power supply can cause
fire or damage to the equipment. Be sure to ground the equipment to
prevent electrical shock and mutual interference. Be sure to use the
proper fuse. Using the wrong fuse can cause fire or damage to the 958.
CAUTION!
Proper installation of the Northstar 958 is critical to accurately receive
and effectively use GPS/WAAS signals under a wide variety of weather
conditions.
Keep the following safe compass distance from the 958: 1.0m
standard, 0.8m steering.