dji OSD - Appendix; Port Description

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Appendix
Port Description
OSD
Power Battery Input Port，input voltage range: 11V~26V
Control Signal Input Port，for wireless video module channel selection and video input
source selection.
Video Signal Output Port
 AV-OUT：Video Signal Output, including both video and OSD information
 AV- GND：Video Signal Ground
 UART：UART signal，transmit the channel control signal to wireless video
transmitter
 BATT+：Positive Voltage of Power
 BATT－：Negative Voltage of Power
Video Input Port，2 input sources are available
 AV1：Video Input Source 1
 AV2：Video Input Source 2
 POWER：11~13V, supply power for video input source
 GND：Ground
Micro-USB Port：Connects the OSD with PC for firmware upgrade
CAN-Bus : Communication of the OSD with autopilot system through CAN-Bus
LED
LED indicator for power