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E
C
LECTRICAL
ONNECTIONS
The SL60 installation kit includes 15 and 37 pin dsub shells and crimp contacts, the SL50 has
only the 37 pin shell. The crimp contacts are specified for 20 to 24 awg wire. Make the crimp
connections with a crimp tool as specified in the Special Tools Required section on page 7.
All wires should be 20 to 24 AWG unless otherwise specified. Wiring diagrams are included
in Figure 8 through Figure 11.
P
OWER
The SL60 requires two power connections, one for the GPS navigation side of the unit, the
other for the comm. Make the power connections to the unit using 20 awg wire.
The GPS navigation power input is internally fused at 3 amps. A separate 2 amp (maximum)
circuit breaker or fuse should be installed for downline overload or short circuit protection.
The comm power input (SL60 only) is internally fused at 7 amps. A separate 5 amp
(maximum) circuit breaker or fuse should be installed for downline overload or short circuit
protection.
Note: Circuits should be protected in accordance with guidelines in AC 43.13-1A,
chapter 11, section 2, paragraph 429.
When connecting power to the GX unit, reversing the polarity of the connection
will blow the internal fuse. The internal fuse is soldered onto the circuit board
and requires repair at the factory.
A
O
VIONICS
UTPUTS
The SL50/60 includes full avionics outputs for CDI/HSI indicators, autopilot, and
annunciators. These outputs are to be connected as appropriate for the particular installation.
The CDI/HSI outputs may be connected to a dedicated CDI or HSI or to a shared indicator
using an appropriate switching relay. The avionics outputs available are listed in the Avionics
Outputs specification on page 31. Connect the annunciator outputs to lamp indicators as
described in the specifications. The minimum connections required for different installations
are listed in the System Configurations on page 4.
If a switching relay is used to make connections to a shared CDI/HSI, it should be a minimum
of an eight pole relay box with an appropriate selector switch with annunciation. Since the
SL50/60 is not approved for approach operation, the ILS enable signal from a connected ILS
receiver can be connected to automatically switch the indicators back to the nav receiver when
an ILS frequency is selected.
S
I
ERIAL
NTERFACE
The SL50/60 includes an RS-232 serial port for making optional connections. The serial port
can be used for connecting to such devices as the Apollo 360 map, the Apollo SL40 comm, an
Argus moving map display, or a Stormscope.
Apollo SL50 / SL60 Installation Manual
Warning
Installation
13
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