Servo Optoisolator and PWM

Hi all,

I've a couple of MDOP1, here are some specification.

Supply voltage: +5 V (+3.5 V to 8V)
Current consumption Input / Output: 1 mA / 1 mA
Management (positive pulse): T = 0.1 ÷ 300ms

I used to have them on my rc airplane.

I've tryied to hook up a servo to an arduino uno using this optocoupler in between, but nothing happen. No vout, no signal.

Could somebody explain me what's the problem?

Thank you!

No we can't since you've provided no information about how you wired things up. Rather
than make us guess, show us! And provide part numbers rather than vague descriptions like
"this optocoupler"