Installation and Operation
Electrical Interface
DV16401.03 Issue 04 May 2021 BD406/PBD406 55
IF0 - ARINC Output
IF0 interface negative bus of
the transmitter.
IF0 interface ground of the
transmitter.
IF0 interface positive bus of
the transmitter.
IF0 is an ARINC 429 compliant output interface.
It supports transmission speeds: 12.5 kbps, 100 kbps.
Refer to ARINC 429 specification for details on wiring and electrical requirements.
If not used, keep pin(s) unconnected.
IF1 - Service Protocol Interface
IF1 interface negative bus of
the receiver.
IF1 interface ground of the
receiver.
IF1 interface positive bus of
the receiver.
IF1 interface negative bus of
the transmitter.
IF1 interface ground of the
transmitter.
IF1 interface positive bus of
the transmitter.
Discrete inputs ground (signal
return for pin 25).
Dedicated for Service Mode
Activation.
IF1 is a RS422 compliant interface for service functions.
It is a proprietary serial data communication protocol for control, calibration and configuration of the
device.
IF2 - GPS Interface (external/internal)
IF2 interface ground of the
receiver
receiver
IF2 interface ground of the
transmitter
transmitter
IF2 is a RS232 compliant interface for an internal/external GPS data transmission.
When internal GPS receiver is active - routed frames from internal GPS are present on IF2TX (an
external listener can listen to the frames from internal GPS source).
When an external GPS is active, connect the IF2RX to a valid GPS data source compliant with
NMEA-0183. The source must send GGA, VTG, RMC, GSA frames.
To listen to the routed transmission of internal GPS source set these transmission parameters:
Baud rate: 9600 bps
Data bits: 8 bits
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