There is a need for a 50 ohm termination resistor somewhere, generally at the scope input, so that the coax bandwidth does not affect the signal. A 450 ohms at the other end of the coax would provide a 10X ratio with a DC impedance of 500 ohms. There is a need to know the RG number of the coax so as to evaluate what capacitance is generated with a 1 meter long piece of that coax. That will allow calculating the bandwiddth of the probe.
These cheap oscope need a few resets to sometimes output the correct voltage I’ve ran into this issue before too checking the voltage of a Aa battery for instance
Great exploration, Astro, thanks. Good to see you back on the way up again after you gave up your other channel. All the best, mate.
There is a need for a 50 ohm termination resistor somewhere, generally at the scope input, so that the coax bandwidth does not affect the signal. A 450 ohms at the other end of the coax would provide a 10X ratio with a DC impedance of 500 ohms.
There is a need to know the RG number of the coax so as to evaluate what capacitance is generated with a 1 meter long piece of that coax. That will allow calculating the bandwiddth of the probe.
i use RG6 on my probes
Rob
NSW
Australia
These cheap oscope need a few resets to sometimes output the correct voltage I’ve ran into this issue before too checking the voltage of a Aa battery for instance
bom bom bom bom brrrr
Intelligent
Excellent video. Please get a good manicure-Finger nails needs help. God luck
Thank you, however my finger nails are not your concern.