Interfaces; J101 Connector Pin Functions - Garmin GPS 155XL Installation Manual

1.2.3

Interfaces

The GPS 155XL/GNC 300XL provides an interface to various general aviation instruments. Table 3-2 defines the
function of each pin on the 37-pin DSUB connector located at the back of the rack. Table 3-3 lists the function of
each pin in the 26-pin HD-DSUB connector (J102) located above the 37-pin connector at the back of the rack.
Figures 5-4 through 5-7 define the interconnects between the rack and other instruments. J101 and J102 pin
functions are provided in paragraphs 1.2.4 and 1.2.5.
1.2.4 J101 Connector Pin Functions (37-pin)
CDI
(Pins 1 and 4)
To/From
(Pins 2 and 4)
Nav Flag
(Pins 3 and 4)
OBI Data
(Pins 7, 8, and 23)
Message Annunciator
(Pin 20)
RS232 Chan 1 Output Data
(Pin 24)
RS232 Chan 2 Output Data
(Pin 19)
RS232 Chan 1 Input Data
(Pin 17)
RS232 Chan 2 Input Data
(Pin 18)
Arrival Annunciator
(Pin 12)
GPS Approach Active
Annunciator (Pin 13)
GPS Approach Arm
Annunciator (Pin 28)
ARINC 429 Output A & B
(Pins 15 and 16)
NAV Super Flag Output
(Pin 10)
GPS Approach Arm Low
(Pin 9)
GPS OBS
(Pins 4, 14, 35 and 37)
Capable of driving up to three 1000 ohm parallel loads, +150 millivolts
full scale deflection with a maximum output of +300 millivolts.
Capable of driving up to three 200 ohm parallel loads, +190 millivolts
full scale deflection.
Capable of driving up to three 1000 ohm parallel loads, 375 millivolts
for flag out-of-view, and +40 millivolts for flag in-view.
Output providing bearing to waypoint data for a Bendix/King RMI (KI
229 or equivalent).
Output capable of driving negative logic message annunciators by
sinking up to 500 mA.
Output capable of driving devices as listed in Section 4. Conforms to the
EIA specification RS-232C.
Output capable of driving devices as listed in Section 4. Conforms to the
EIA specification RS-232C.
Input capable of receiving data from devices listed in Section 4.
Conforms to the EIA specification RS-232C.
Input capable of receiving data from devices listed in Section 4.
Conforms to the EIA specification RS-232C.
Output capable of driving negative logic annunciator by sinking up to
500 mA.
Output capable of driving negative logic annunciator by sinking up to
500 mA. See GPS 155XL/GNC 300XL Pilot's Guide (GPN 190-00067-
20 and 190-00067-30), for more information.
Output capable of driving negative logic annunciator by sinking up to
500 mA. See GPS 155XL/GNC 300XL Pilot's Guide (GPN 190-00067-
20 and GPN 190-00067-30), for more information.
Output capable of interfacing with any device that has an input
conforming to the GAMA ARINC 429 (low speed) specification.
Output capable of driving positive logic NAV Super Flag by sourcing up
to 500 mA for flag out of view (NAV valid).
Input, when grounded, controls approach mode.
Capable of interfacing with a standard OBS resolver.
GPS 155XL/GNC 300XL Installation Manual
P/N 190-00067-22 Rev E Page 1-2