Becker BD406 - Figure 19: Connector Layout P1 - Digital and Analog I;O (Rear Side); Device Connector P1 - Digital and Analog I;Os

Installation
Becker Avionics
Electrical Interface
46 BD406/PBD406 DV16401.03 Issue 04 May 2021
Device Connector P1 - Digital and Analog I/Os
Position 4:
Type: DB-25 D-SUB, 25-pol. male connector, slide-in fastener.
Figure 19: Connector Layout P1 - Digital and Analog I/O (rear side)
BD406 without control head:
The BD406 without control head can be only powered-on when P1-11 pin (/ON
input) is connected to P1-19 DI_GND.
P1
Pin
Type I/O Name Function Recommended
cable type
1
Analog
O
HDPH-
Headphone output return signal
(headphone output is balanced).
Not used for BD406 without control
head.
AWG 20 - 22
best performance
with AWG20
shielded, as short
as possible
2
Analog
O
HDPH+
Headphone output signal
(headphone output is balanced).
Not used for BD406 without control
head.
3
Ground
--
DO_GND
Discrete output ground (signal
return for pins 4, 5, 17, 18).
Not used for BD406 without control
head.
AWG22
4
Discrete
O
/PWR_EVAL
Device enabled status.
Active state = device enabled.
Not used for BD406 without control
head.
AWG22
5
Discrete
O
/GPO_0
Configurable general purpose
output.
Not used for BD406 without control
AWG22
6
Ground
--
DI_GND
Discrete input ground (signal
return for pins 7, 10, 11, 20, 21,
22, 23).
Not used for BD406 without control.
AWG22
7
Discrete
I
/GPI_0
Configurable general purpose
input.
Not used for BD406 without control.
AWG22
8
Analog
I
ILLUM-
Adjustment display backlight.
Not used for BD406 without control.
AWG22
9
Analog
I
ILLUM+
Adjustment display backlight.
Not used for BD406 without control.
AWG22
12
13
11
10
9
8
7
6
5
4
3
2
1
14
15
16
17
18
19
20
21
22
23
24
25
/GPO_1
/MSG
/SDI_10
/SDI_9
/GPI_1
/GPI_CH
PWR_GND
DI_GND
PWR_GND
DO_GND
SPKR+
SPKR-
HDPH-
HDPH+
/PWR_EVAL
/GPO_0
ILLUM-
ILLUM+
/GPI_0
/GPI_2
/ON
DI_GND
PWR_SUPP
PWR_SUPP
DO_GND
P1