Coaxial cable is a two conductor cable consisting of a core and shield. If it is video cable (or digital audio), it will be 75ohm. Standard audio cable (often used for wireless antennae) will be 50ohm. The best way to check the stability of the signal is with a waveform monitor. This will tell you what kind of interferrence you are getting.It was recommended by the professor since there might be long runs to get the signal to my computer.
It is video, the cable i have is the same as you would find for cable in your house. And my MM will only give me a live reading and won't record a min and max.Coaxial cable is a two conductor cable consisting of a core and shield. If it is video cable (or digital audio), it will be 75ohm. Standard audio cable (often used for wireless antennae) will be 50ohm. The best way to check the stability of the signal is with a waveform monitor. This will tell you what kind of interferrence you are getting.
If you are using the multimeter, will it record minimum and maximum voltage? Interferrence could be introduced along the cable depending on how close it is to other power sources. This was always something to be considered when running analog signals. To remove most of the interferrence on analog signals, we would use "humbuckers" (video ground loop isolation transformer).
Coaxial cable is a two conductor cable consisting of a core and shield. If it is video cable (or digital audio), it will be 75ohm. Standard audio cable (often used for wireless antennae) will be 50ohm. The best way to check the stability of the signal is with a waveform monitor. This will tell you what kind of interferrence you are getting.
If you are using the multimeter, will it record minimum and maximum voltage? Interferrence could be introduced along the cable depending on how close it is to other power sources. This was always something to be considered when running analog signals. To remove most of the interferrence on analog signals, we would use "humbuckers" (video ground loop isolation transformer).
The OP is asking about running a DC voltage through coax, not an AC radio frequency signal. A coax loss calculator only applies to RF and it doesn't apply to DC. Instead, plain old Ohm's law with the resistance per foot of conductor is how this would be calculated. Because the input impedance of the measurement device is likely to be extremely high, it renders any current-resistance losses completely negligable, unless the cable is thousands of feet long.
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