ImmersionRC vortex 250 pro, Instruction Manual

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Appendix D: LED Board - Status report
The LED Board is used by the OSD during the startup phase to report flight controller sensor
status, flight-controller API compatibility and video link status information.
From left to right the bottom led board will turn green ( or red if a problem is detected) one
after another as follows:
1. GYRO sensor detected
2. ACCEL sensor detected
3. BARO sensor detected
4. Flight Controller/OSD APIs Compatible
5. Camera detected
At the end of the initialization sequence, the led board will blink in green if all tests passed, or
it will blink in red if any test failed.
It will also blink in green for 3 seconds when you arm your Vortex.
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