VTOL ESC Needs low PWM to Arm

On the new ZOHD Altus VTOL I am building, one of the ESC needs to be at <988ms in order to arm. But no matter what I set the servo min value to, it would always start at 1000ms, thus unable to arm the ESC. Setting both trim and min to a low value have no effect. Only way I can get it to arm is to change the channel function to throttle, but obviously that will not work for a VTOL.

Any suggestions?

Thanks,

Stephen

If they’re PWM servos you need to re-do the calibration.

If they’re capable of dshot then you haven’t got that configured correctly.

What kind of ESCs are they? Any specs?

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They are ZOHD 30 amps Lite ESC. Not capable of DSHOT. Let me try calibration again. Thanks!