Becker BD406 - Page 50

Installation
Becker Avionics
Electrical Interface
50 BD406/PBD406 DV16401.03 Issue 04 May 2021
J1
Pin
Type I/O Name Function Recommended
cable type
Remarks
18
Discrete
I
IF4RX-
IF4 interface
negative bus of the
receiver.
Not used for BD406
without control.
AWG26
IF4 is RS422
compliant auxiliary
interface for future
use (it allows direct
communication with
the control head)
19
Ground
--
IF4RX_GND
IF4 interface ground
of the receiver.
Not used for BD406
without control.
AWG26
20
Discrete
I
IF4RX+
IF4 interface
positive bus of the
receiver.
Not used for BD406
without control.
AWG26
21
Discrete
O
IF4TX-
IF4 interface
negative bus of the
transmitter.
Not used for BD406
without control.
AWG26
22
Ground
--
IF4TX_GND
IF4 interface ground
of the transmitter.
Not used for BD406
without control.
AWG26
23
Discrete
O
IF4TX+
IF4 interface
positive bus of the
transmitter.
Not used for BD406
without control.
AWG26
24
Ground
--
DI_GND
Discrete input
ground (signal
return pin 25).
Not used for BD406
without control.
AWG22
25
Discrete
I
/SRV_EN
Service Mode
Activation.
Not used for BD406
without control.
AWG22