I use a sensor that outputs a PWM-signal (10 Hz; "normal": Duty Cycle 20% (20 ms high, 80 ms low); high = 6 V, low = 0.5 V).
The sensor is connected to the Gate Input Channel of the FP-CTR-502 with an external supply voltage (Vsup) of 5 V.
I tried to measure the pulse width with the "Pulse_Width_Measurement_with_FP-CTR-50x.vi".
I know, that (due to the specifications) the FP-CTR-502 registers an ON
state when Vin is 2 or lower and an OFF state when Vin is 3 or higher -
which means that the measurement would be "upside down".
But my problem is that the (measurement-)results of the VI vary from
0.03 to 1.8 (without the presents of the substance that should be
measured!).
Does anyone know what the problem might be?
