3. Getting Started
3.13.3. Relative Reflection Coefficient (RRC) Method
The CT100B measures the relative reflection coefficient between cursors. When the two cursors of
the CT100B are positioned on either side of a change in impedance, this measurement is the
reflection coefficient for that change. The relative reflection coefficient is displayed on-screen with a
prefix of ∆mρ. To view the relative reflection coefficient values, go to MENU → Settings →
Display and make sure Rho is toggled on. By default, the value is displayed in Classic mode,
displaying the true reflection coefficient relative to the signal at the input of the reflection. The
CT100B can also measure in 1502C mode, which displays a reflection coefficient relative to the
signal at the input of the cable.
1. Select the MENU → Settings → Meas. Settings menu.
2. Select RRC Classic Mode from the menu. This will toggle the CT100B between the Classic
RRC calculation and the 1502C calculation as displayed on the screen.
CT100B TDR Cable Analyzers Operator’s Manual 37
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