3x telemetry outs (with mavlink) in Pixhawk 2.1

In my Pixhawk 2.1 I have 2 telemetry ports. One is for graupner telemetry, one is for silk telemetry and now I would like to use third telemetry for connecting mavlink with alexmoss gimbal. Which port should I use in Pixhawk 2.1 and what I have to change in parameters in arducopter ?

The “CONS” connector can be configured as SERIAL5.


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Also, the GPS 2 port is SERIAL4. You can use that if you don’t have a second GPS.

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