zero crossing square wave

[dapmanz]

Hi,
My XM10E is not generating the correct zero crossing detect signal. When this signal was viewed from the oscilloscope, i obtained a signal with 20ms period ( i'm working on 50Hz) but the amplitude was 0.1V. Also, the shape was not square.
Dapmanz.

[Charles Sullivan]

Hi,
My XM10E is not generating the correct zero crossing detect signal. When this signal was viewed from the oscilloscope, i obtained a signal with 20ms period ( i'm working on 50Hz) but the amplitude was 0.1V. Also, the shape was not square.
Dapmanz.

According to the specs, this is an open collector circuit and you need a pullup resistor.  If you already have this in your circuitry, your XM10E is probably defective.

[dapmanz]

Thanks Charles
I've modified my circuit with a 10k resistor. I obtained the expected 50Hz square wave.
Dapmanz