Sandel
Avionics
SN3308 Navigation Display
Installation Manual
90106-IM-G(4) Installation Manual W SIG.doc
Page 9
Although simple, retrofit replacement of most existing three-inch PNI’s or HSI’s is
possible without additional features, we strongly encourage complete installation of
the unit with all compatible peripheral equipment interconnected to maximize its
functional capability.
1.3 Installation
Planning
Sandel Avionics has taken many equipment interface possibilities into consideration
during the design of the SN3308 to ensure maximum interoperability with other
avionics. Contact the factory with any questions about interfacing to specific avionics
equipment not covered in the installation drawings.
To simplify installation and installation planning, signals are wired to the SN3308 pins
per the installation diagrams and software setups are used in a post-installation
procedure to assign protocols/gradients to each pin based on the equipment
connected. There are separate maintenance menu pages for each equipment
function and in most cases the selections are made by equipment make/model.
In addition to connecting the desired equipment, the installer must provide the
following components:
x
Dimmer Control
An external pot must be mounted near the SN3308 to provide for
convenient dimming of the display. This is not a rheostat, it is simply a
10K, ½ Watt pot which provides a control voltage.
x
Data-load Port
A ¼” phone jack must be installed in any convenient location and wired to
one of the SN3308’s serial input ports, as shown on NAV-2,GPS1(RS422),
GPS-2, DATALOAD Installation Drawing. This port will be used to upload
new software and database revisions.
Refer to the installation schematics at the rear of this manual for details on connecting
these two required components.
The
installation planning cycle
is summarized as follows:
1)
Compile an equipment list for the aircraft.
2)
Study the feature list below, and determine the desired functional
characteristics for the installation.
3)
Study the installation drawings to determine a basic interconnect scheme
and check for conflicts.
4)
Develop the specific wiring diagrams unique to the aircraft.
