G900X/G950 Installation and Maintenance Manual – GEA 71
Page 5-7
190-00719-00
Revision D
5.6.2 G900X/G950
Supported
Piston Engine Sensors
Table 5-6 contains a list of G900X/G950 supported sensors.
CAUTION
Table 5-6 contains the sensor manufacturers and part numbers that have specifically been
tested and verified for use with G900X/G950. Required sensor properties are listed for
sensor types with standard electrical parameters configured as part of the default
G900X/G950 software configuration. Use of an alternate sensor is done at the installer’s
own risk. Garmin cannot guarantee suitable performance when an alternate sensor is
used. Garmin strongly recommends the sensors listed in Table 5-6 be utilized in all
installations.
Table 5-6. G900X/G950 Supported Sensors (Piston Only)
Sensor
Suggested
Manufacturer
Sensor P/N
Sensor
Type
Required Sensor
Properties
GEA 71 Connection
EGT
Alcor
86255
Type K
Thermocouple
Any standard Type K
Thermocouple
ENGINE TEMP
ANALOG IN 7 – 12
CHT
Alcor
86253 (one-
piece) or
86252 with
28202 adapter
(two-piece)
Type K
Thermocouple
Any standard Type K
Thermocouple
ENGINE TEMP
ANALOG IN 1 – 6
TIT
Alcor
86245
Type K
Thermocouple
Any standard Type K
Thermocouple
ANALOG IN 6 - 7
Mechanical
drive sender
1A3C-2
Tachometer
Sending Unit
Must send a
frequency
corresponding to
pulses/sec with a ratio
of 0.5 Revolutions per
pulse
(0 to 12 V, digital low
≤
1.9V)
RPM
UMA
Mag Bleed
Port (T1A9-1
(Slick), or
T1A9-2
(Bendix)
Tachometer
Sending Unit
Must send a
frequency
corresponding to
pulses/sec with a ratio
of 1 (4-cylinder) or
0.667 (6-cylinder)
Revolutions per pulse
(0 to 12 V, digital low
≤
1.9V)
DIGITAL IN* 2
Battery
Ammeter
UMA
1C4
Shunt
50 mV shunt rated for
100 Amp
ANALOG/CURRENT
MON IN 1A
Alternator
Ammeter
UMA
1C4
Shunt
50 mV shunt rated for
100 Amp
ANALOG/CURRENT
MON IN 2A
Auxiliary
Ammeter
UMA
1C1
Shunt
50 mV shunt rated for
30 Amp
ANALOG/CURRENT
MON IN 3A
Position
Sensor
Ray Allen
T2/T3 series
servos and
POS series
position
sensors
Slide
Potentiometer
Linear potentiometer
(0-5000 ohm)
ANALOG IN 8 - 10