BFI57 / P/N BFI57-(xxx)-(xxx)
Operation and Installation
Document-No.: 08.510.010.71e/ Revision: 3.10
23
3.5.2 Pressure Inputs
Two pressure probes are providing the inputs for the sensor based
determination of the indicated airspeed, the barometric altitude as well as
the rate of climb.
3.5.3 Power / RS-232
By a 9-pole D-Sub socket (male) the BFI57 is supplied with power.
Additionally this D-SUB socket incorporates an RS-232 interface. This
RS-232 interface is used for the output of flight information, as well as for
maintenance (calibration and firmware updates). For further explanations
regarding the output messages refer to Annex 5.2.
D-Sub-Connector Pin-Out and Cable Colors/Cross-Sections
PIN #
Color
Cross-Sctn. Function
1+2
*)
red
0.96 mm
2
Power-Supply – Input
+8 to +18 VDC
Use with external switch
(e.g. Avionics Master)
Use external 2A fuse (slow-blow)
3
–
4+5
*)
blue
0.96 mm
2
Power-Supply – Ground
6
–
7
black
0.38 mm
2
RS232 Output TX
(see 5.2)
P
in
#
D
a
ta
C
o
n
n
e
c
to
r
3
8
white
0.38 mm
2
RS232 Input RX
1
9
blue
0.38 mm
2
RS232 Signal Ground
5
*)
internally connected within the cable set delivered with the product
Rear View:
1
5
6
9
Data Connector:
(both seen from aircraft side)
0.96 mm
2
can be substituted by AWG17, 0.38 mm
2
by AWG21.
Summary of Contents for BFI57
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