TruTrak EMS BU (8300-065) - Manual (Page 3)

TruTrak Flight Systems 1 EMS Installation Manual
JUNE 2009 8300-065 Rev D
Mechanical Installation Considerations
PROGRAMMER INSTALLATION
Mounting Considerations
The EMS Series unit is designed to mount in the aircraft instrument panel within view and reach of the
pilot. The primary unit location should minimize pilot head movement when transitioning between
looking outside of the cockpit and viewing/operating the EMS Series unit. Maximum recommended
viewing angle should be no more than 20 deg. The maximum mounting angle the EMS can accommodate
is 12 degrees longitudinal axis and 0 degrees lateral axis. The location should be such that the EMS Series
unit is not blocked by the glare shield on top, or by the throttles, control yoke, etc. on the bottom. Use
aircraft installation standards for mounting and support of the EMS programmer.
EDM should be mounted on the firewall so that both sides can be accessed for service. Do not run
wire along fuel lines for support. All wiring should be mounted above fuel and hydraulic line for safety.
Never mount wiring directly on support structures, use Adel clamps or wire stand-offs.
Wiring Considerations
Use AWG #24 or larger wire for all connections in the interior of the aircraft unless otherwise specified.
Engine wiring should not be smaller than AWG #22. The standard crimp pin contacts supplied in the
connector kit are compatible with up to AWG #20 wire. In cases where some installations have more than
one component sharing a common circuit breaker, sizing and wire gauge is based on length of wiring and
current draw on units. In these cases, a larger gauge wire such as AWG #20 may be needed for power
connections. Do not attach any wires to the outside of the EMS or route high current wires within six (6)
inches of the programmer. Ensure that routing of the wiring is not exposed to sources of heat, RF or EMI
interference. Check that there is ample space for the cabling and mating connectors. Avoid sharp bends in
cabling and routing near aircraft control cables. Do not route the COM antenna coax near any EMS
components.
RFI/EMI considerations
The EMS programmer is shielded and does not generate any appreciable level of electromagnetic
interference. The EMS itself has been internally protected from RF interference and has been tested
under fairly extreme conditions, such as close proximity to
transmitting antennas. However, it is always good practice
to insure that such antennas are properly shielded and not
routed directly over or under sensitive panel-mounted
electronic equipment. Most problems in this area are the
result of improper RF shielding on transmitting antennas,
microphone cables, and the like.
Pitot and Static Connections
The TruTrak EMS requires connections to the Pitot and
static lines. The preferred method of this connection would
be tee fittings near the aircraft’s airspeed indicator.
PITOT STATIC