we usually do not use coaxial cables inside oscilloscope, so what is the reason?
what are the conditions which are not feasible for using coaxial cables here?
Electrical – why coaxial cable not used in oscilloscope?
cablesoscilloscope
Related Solutions
This example of a Triaxial to BNC-Female Adapter shows that:
The two types cannot be directly connected without an adapter.
There are adapters available.
The adapters are not at all inexpensive.
It is very simple. You should convert any amplifier and attenuation in dB format. and formula is like this
Receiver_signal(dB)=Signal_at_antenna(dB)+Antenna_gain(dB)-Cable_Loss(dB)-other_loss(dB)
As your Receiver_signal should be above minimum signal strength with a margin for example(15 dB). Place this amount for Receiver_signal and compute Maximum cable loss. Cables are standards. Please find cable loss at this table. So you can find which cable is suitable for your work.
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Best Answer
Scope signals capable of 30MHz usually have controlled impedances.
Rule#1
Ground lead inductance is a major cause of ringing even in coaxial probes that must be avoided for measurements>30MHz or Tr<10ns by removing tip & gnd clip and only using tip/barrel ring.
e.g. stripline, microstrip or braided coax. or in high end scopes only semi-rigid coax. are used with SMA or similar RF connectors.