Real Time Clock Module - RV-8803 (Qwiic)

I wont to measure the frequency of the clock out.
Have found the example file 6.
But when I try to measure the frequency on this output with my scope and with the analyzer there is no signal. Is this output an open drain output, if yes what resister value should use?

Some idees?

Thanks for any help.
Cheers
Jan

The output pin is disabled by default.
Have you pulled CLKOE high?