Garmin Apollo CNX80, Installation Manual

Page: 53 / 168

Installation Procedures
Apollo CNX80 Installation Manual 560-0982-00 Rev D
2-23
2.8 F
UNCTIONAL
D
ESCRIPTIONS
2.8.1 P
OWER
Aircraft power is provided to the CNX80 on several connectors. The CNX will accept input power from
10 to 36 VDC.
P1-1 Power + (Primary)
P1-16 Power + (Primary)
P1-35 Power + Out (Nav)
P4-1
Power + (Com transceiver)
P7-1 Power + (Nav receiver)
P1-2 Power Ground (Primary)
P1-20 Power Ground (Primary)
P1-37 Power Gnd Out (Nav)
P4-9
Power Ground (Com transceiver)
P7-2 Power Ground (Nav functions)
CAUTION
Two sets of primary power and ground pins are provided on P1. Both sets MUST be
connected to the aircraft power source or damage to the unit may occur.
Refer to Appendix D for recommended power connections.
2.8.2 M
AIN
C
OURSE
D
EVIATION
I
NDICATOR
The Main CDI output displays both lateral and vertical deviation from selected course, lateral and vertical
flags and superflags, and TO/FROM indications.
The CDI key on the bezel of the CNX80 is used to toggle between the display of GPS and VOR/ILS
information on the CDI window and remote CDI. The navigation source is displayed in the CDI window.
The navigation source can optionally be annunciated externally by connecting the GPS Indicator output
(P7-17) and NAV Indicator output (P7-18). The selection of GPS or VOR/ILS navigation sources may be
toggled remotely by momentarily grounding the CDI Select input (P7-8) is (refer to section 2.8.4 for
additional information on the external annunciators and switches).
Refer to Appendix D for interconnect information.
2.8.2.1 Deviation Outputs
P7-13 Main CDI + Right
P7-14 Main CDI + Left
P7-30 Main GS + Up
P7-31 Main GS + Down
Each deviation output provides
±
150 mV full scale and is capable of driving up to a 200
Ω
load, (i.e. up to
a maximum of five 1k
Ω
loads connected in parallel).