Hey everyone. I'm working on a project that includes a sensor clip with a photodiode and LED. I flash the LED at a rate of 1kHz with a pulse wave fed through the sensor wire. This 1kHz pulse wave is appearing as a 1kHz noise wave riding on other equipment measurements.
Is there anyway I can hardware filter (shielding, coating) out this 1kHz noise and prevent it from propogating to other equipment measurements?
The only solution I have come up with was a notch filter and it works. But I'm looking for a cheapier solution. I've tried ferrite cores to place on the cable, but they're designed for such high frequencies. Any help appreciated - thank you.
P.S. I tried to EMI shield the cable, but since it's a sensor clip and not in an enclosure, this was impossible.
Is there anyway I can hardware filter (shielding, coating) out this 1kHz noise and prevent it from propogating to other equipment measurements?
The only solution I have come up with was a notch filter and it works. But I'm looking for a cheapier solution. I've tried ferrite cores to place on the cable, but they're designed for such high frequencies. Any help appreciated - thank you.
P.S. I tried to EMI shield the cable, but since it's a sensor clip and not in an enclosure, this was impossible.