FreeFlight 2101 I/O PLUS, Installation And Checkout Manual, Page: 107 / 152

Page C-3
Revision E
May 31, 2006
FreeFlight 2101 I/O Approach Plus GPS Navigation System
INPUT CHARACTERISTICS DESCRIPTION
ARINC 565 dc Analog Source dc amplified, or equivalent,
Voltage Ratio having low side ground inside
(Output #4) sending unit
Range 0 to 599 knots
Resolution 4 knots
Accuracy ± 4 knots
Index Reference 0 knots is equal to 0 Vdc
Positive Direction Sense Increasing speed for
increasing voltage
Scale Factor Etas/Etas = 0.000310186 TAS
Reference Voltage 20 Vdc ± 2 Vdc
Loading 100 k
Ω
for signal
10 k
Ω
for reference
Signal pins J2-10=Sig, J2-12=Ref, J2-14=Com
C.1.2 Heading Input
INPUT CHARACTERISTICS DESCRIPTION
Heading Synchro Source ARINC 407 three wire synchro
or equivalent
Range 0° to 360°
Resolution 0.1°
Accuracy ± 0.2°
Index Reference Magnetic or True North = 0°
Positive Direction Sense Increasing heading for
increasing angle
Scale Factor 1° heading equals
1° electrical rotation
Reference Voltage 26 Vac ± 10%, 400 Hz ± 20 Hz
Loading Reference: 10k
Ω
Signal: 100k
Ω
Reference pins J2-21=H, J2-25=C (Ground)
Synchro pins J2-20=X, J2-22=Y, J2-24=Z
C.1.3 Discrete Inputs
INPUT CHARACTERISTICS DESCRIPTION
Speed Valid J2-13 Source Arinc 545/565 Air Data System or KIFIS
Status +18.5 to +30 Vdc = Valid
0 to +3. 5 Vdc = Not Valid
Loading 10k
Ω
minimum
Heading Valid J2-19 Source Aircraft Compass System
Status +18.5 Vdc to +30 Vdc = Valid
0 to +3.5 Vdc = Not Valid
Loading 10k
Ω
minimum