NorthStar Navigation Explorer 538i - Manual (Page 51)

Northstar Explorer 538i/538 Installation and Operation Manual 51
2 Bracket Mounting
Requires a panel for mounting the bracket. Ensure
that the panel is not likely to deform and is not
subject to excessive vibration. The bracket can
be tilted and rotated. The display unit can be
removed when it is not in use.
1 Hold the bracket in place and mark the screw
holes.
2 Drill the screw holes and screw the bracket in
place. Do not overtighten the screws or the
display unit might not rotate.
3 Hold the display unit in place on the
mounting bracket shaft. Hand tighten the
knob on the mounting bracket.
Select a position for the display unit:
• At least 4” (100 mm) away from the compass,
at least 12” (300 mm) away from any radio
transmitter and at least 4 ft (1.2 m) away from
any antenna.
• Easy to read and operate. If possible, mount
the display unit in front of the navigator or to
the right of the navigator because the LCD
display is more readable from these positions.
• Not exposed to the direct sun or water and
protected from physical damage during
rough sea passages.
• Easy to access the 12 V DC power source and
convenient to route the transducer cables.
There are two mounting arrangements:
1 Flush Mounting
Requires a solid panel with access behind
for wiring and mounting screws. After flush
mounting, the display unit cannot be tilted or
moved after installation to reduce any unwanted
glare or reflections. Carefully select the best
viewing position before installation. This would
generally be in a shaded area.
1 Cut a hole in the bulkhead for the display unit
using the flush mount template.
2 Drill four holes for the mounting studs using
the flush mount template.
3 Screw the four studs into the brass inserts in
the back of the display unit.
4 Sit the display unit in place and fit the
washers and nuts to the studs.
For the Explorer 538i, with the internal GPS
antenna:
The display unit must have a good view of
the sky and horizon. The view should not be
blocked by large parts of the superstructure.
The unit can be under glass, perspex,
fibreglass or fabric, but not under metal or
wood.
Do not mount the unit within 3 m (10 ft) of a
radio transmitter antenna or within 0.5m (20
in) of the plane of a radar antenna.
15-3 Installation: The display unit
Knob
Mounting
bracket
Explorer 460
Explorer 560