Faulty pwm output or configuration problem?

Hi everyone,

Im using an APM 2.6 with Copter 3.2.1 installed. It seems that everything works except for my camera gimbal.
I started from here: http://ardupilot.org/copter/docs/common-tarot-gimbal.html
And this is my config:

RC input 6 is calibrated, but the gimbal did not response to my actions.

I disconnected the gimbal and attached a voltmeter. I expected a voltage from 2.5V-5V (PWM 50Hz) or at least 5V for max RC input, but I get voltages between 0.24V and o.48V (it seems to be one tenth of of my expectations).

Is my PWM output faulty?
I tried already a brandnew APM, but got the same results :frowning:

thanks :slight_smile: