User Manual

1.3.1 Connection to the Auxiliary Voltage Detection Cable:

This port has two modes. When the video voltage mode, with the supplied Y cable shown

in Figure 1.12, the A/V link battery is connected to the female JST connector, the A/V

transmitter/ camera is powered up from the male JST connector, for example. And the 2-

pin connector with black and red twisted wire are

connected to the voltage auxiliary port on the

OSD main board.The A/V link battery pack

voltage is detected through this port. When this

port is conﬁgured as Receiver Signal Strength

Indication(RSSI) mode, the receiver RSSI output

is connected to this port to feedback the real-time

signal strength of the RC RF link. Please note

that the red pin is the positive voltage, and the

black pin is the ground.

1.3.2 Connection to the Auxiliary Serial Module:

This port is reserved for future development for receiving in-ﬂight instructions from the

ground station via radio modem. The blue/ red/ black pins connect to the data TX/ +5V/

ground of the radio modem module respectively.

1.3.4 Connection to the RC Receiver:

The two PPM auxiliary ports are reserved for future development for receiving in-ﬂight

settings from the RC receiver spare channels via RC link. The orange/ brown pins connect

to the PPM signal out/ ground of the RC receiver channel. The red pin also can be

connected to the 5V supply pin of the RC receiver when it is needed to be powered up by

the OSD main board.

1.3.5 Connection to the Co-pilot Module:

This port is reserved for future development for connection to the Co-Pilot module to

achieve the autonomous ﬂying.

1.4 Other Interfacings:

1.4.1 Status LED:

There is a red LED on the up-right of the OSD main board. After a successful power up of

the OSD main board, the LED will be indicating a slow ﬂashing to indicate the normal

operation of the Apache OSD system. When downloading the ﬁrmware to the main board

via USB data module, this LED should fast blinking which indicating the ﬁrmware fresh on-

going.

1.4.2 TF Card Slot:

A TF card (to be supplied separately) can be installed to the TF card slot for the purpose of

in-ﬂight data recording. The maximum of 8GB TF card is supported and the card has to be

pre-formatted with FAT32 before use. Slot the TF card with the contact pins facing up, or

facing the printed circuit board (PCB). The TF card will not be well sit into the slot if the

direction is in-correct. Do not force the TF card into the slot.

1.5 Special Note:

1.5.1 OSD and A/V Link Connection:

If the power supply of your A/V transmitter and video camera are 5V. The power of the A/V

transmitter and video camera could be supplied from the OSD main board. Please refer to

Figure 1.13 for connection details.

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