21. Probes are connected to the oscilloscope with a cable matching the characteristic impedance of the oscilloscope input. 22. Image impedance is a similar concept to the characteristic impedance used in the analysis of transmission lines. 23. The ring has a characteristic impedance of factor \ sqrt { 2 } compared to port impedance. 24. BNC connectors are made to match the characteristic impedance of cable at either 50 ohms or 75 ohms. 25. S which is large compared to the characteristic impedance " Z " 0 of the line. 26. The " Z 0 " name refers to the characteristic impedance of the oscilloscope and cable. 27. Typically, the characteristic impedance " Z " 0 will be 50 ohms or 75 ohms. 28. This is particularly a problem with printed technologies, such as microstrip, when implementing high characteristic impedances . 29. Specifically for the lattice, the propagation function,, and characteristic impedance ,, are defined by, 30. At short distances, cables with higher capacitance and different characteristic impedance such as microphone cable can be used.
