Becker BD406 - Page 47

Becker Avionics
Installation and Operation
Electrical Interface
DV16401.03 Issue 04 May 2021 BD406/PBD406 47
P1
Pin
Type I/O Name Function Recommended
cable type
10
Discrete
I
/GPI_2
General purpose input.
Reserved for future use.
Not used for BD406 without control.
AWG22
11
Discrete
I
/ON
Device remote enabling.
Active state = device enabled.
AWG22
12
Analog
I
PWR_SUPP
Positive power supply line.
External 2.5 A fuse for current
protection.
AWG20
13
Analog
I
PWR_SUPP
Positive power supply line.
External 2.5 A fuse for current
protection.
AWG20
14
Analog
O
SPKR-
Speaker output return signal
(on GND potential. Speaker output
is unbalanced.).
Not used for BD406 without control.
AWG 20-22
best performance
with AWG20
shielded, as short
as possible
15
Analog
O
SPKR+
Speaker output signal.
Not used for BD406 without control.
16
Ground
--
DO_GND
Discrete output ground (signal
return for pins 4, 5, 17, 18).
Not used for BD406 without control.
AWG22
17
Discrete
O
/MSG
Signalization of the reception of
valid message.
Not used for BD406 without control.
AWG22
18
Discrete
O
/GPO_1
Configurable general purpose
output.
Not used for BD406 without control.
AWG22
19
Ground
--
DI_GND
Discrete input ground (signal
return for pins 7, 10, 11, 20, 21,
22, 23).
AWG22
20
Discrete
I
/GPI_1
General purpose input.
Reserved for future use.
Not used for BD406 without control.
AWG22
21
Discrete
I
/SDI_9
SDI field of ARINC 429 frame
configuration (bit 9).
Active state of the pin results in
bit 9 of ARINC frames set to 1.
Not used for BD406 without control.
AWG22
22
Discrete
I
/SDI_10
SDI field of ARINC 429 frame
configuration (bit 10).
Active state of the pin results in
bit 10 of ARINC frames set to 1.
Not used for BD406 without control.
AWG22
23
Discrete
I
/GPI_CH
Spare discrete input pin of CH for
future use.
Not used for BD406 without control.
AWG22
24
Ground
--
PWR_GND
Negative power supply line,
PWR_SUPP signal return
AWG20
25
Ground
--
PWR_GND
Negative power supply line,
PWR_SUPP signal return
AWG20