When I learned coax it was 75 ohms for a good match to dipole antenna, and most stuff you find related to TV is 75. I was surprised much later to encounter 50 ohm equipment. Thanks for explaining why!
I see coaxial cables being used for external clocking or measuring clock signals on the FPGA. Is this the reason why as the terminations comes with the cable rather than using a bare cable?
So for a clock/frequency generator, generating various frequencies, should there be a way to have an adjustable termination as we do not know what is connected to the frequency generator before hand?
I just started learning antennas and transmission lines and it is a rabbit hole. Now I partly understand that the signal aberrations that I see on my scope is due to impedance mismatch etc.
Fascinating. I wonder if 50 ohms is the same power vs loss point for PCB trace transmission lines. Or are they different and 50ohms is purely from coax.
This is great. We just purchased some BNCs for a project and was curious as to why they *had* to be 50 ohm. Could not find the information easily.
When I learned coax it was 75 ohms for a good match to dipole antenna, and most stuff you find related to TV is 75. I was surprised much later to encounter 50 ohm equipment. Thanks for explaining why!
I see coaxial cables being used for external clocking or measuring clock signals on the FPGA. Is this the reason why as the terminations comes with the cable rather than using a bare cable?
It’s very important to terminate cables properly to avoid reflected signals
So for a clock/frequency generator, generating various frequencies, should there be a way to have an adjustable termination as we do not know what is connected to the frequency generator before hand?
I just started learning antennas and transmission lines and it is a rabbit hole. Now I partly understand that the signal aberrations that I see on my scope is due to impedance mismatch etc.
Fascinating. I wonder if 50 ohms is the same power vs loss point for PCB trace transmission lines. Or are they different and 50ohms is purely from coax.