Cable impedance

Take a cable section, and measures:

• LCR in C, connected to one end, other is open
• LCR in L, connected to one end, other is shorted

Use formula:

\[ Z = \sqrt{\frac{L}{C}} \]

C = 37.2pF

L = 0.10µH = 100nH

\[ Z = \sqrt{\frac{100 \times 10^{-9}}{37.2 \times 10^{-12}}} = 51.8\Omega \]