Mohr CT100B Series - Math Menu

3. Getting Started
3.9.2.1. Math Menu
The Math menu is a menu selection under both the SCAN button and the blue MENU button.
Math menu selections are shown in Table 3.2.
Table 3.2. Math Menu
Menu Selection Purpose/Action
FFT Tools
▷ FFT Settings
▷ ▷ Window Sets window type (Hann, Hamming, etc.).
▷ ▷ size FFT buffer size.
▷ ▷ Frequency Cut-Off Range FFT display frequency cut-off.
▷ ▷ Hide Selected Trace Hides the selected trace.
▷ Apply FFT Creates FFT trace from selected trace data.
▷ View Live FFT Creates live FFT trace from live TDR trace.
▷ Apply VSWR Creates VSWR (voltage standing wave ratio) trace
from a selected complex division or S
11
trace.
▷ Set Base Sets base trace for complex division FFT trace.
▷ Complex Division Creates complex division FFT: Divides selected FFT
by base FFT. Equivalent to uncalibrated S
11
trace
when base FFT is of a shorted test port.
▷ Phase Creates phase angle trace from selected FFT trace.
▷ Smith Chart Toggles Smith Chart display for selected complex
division FFT or S
11
trace.
SParam & Normalize Tools
▷ S
11
Calibration Performs Open-Short-Load S
11
calibration and creates
S
11
trace.
▷ Normalize Pulse Rise Time Sets the rise time to apply to the selected normalized
trace.
▷ S
11
Options
▷ ▷ Pre-Filter Options Changes the filter options that smooth the aberrations
of the base traces.
▷ ▷ Post-Filter Options Changes the filter options that limit the noise of the
base traces.
▷ ▷ Other S
11
Options
CT100B TDR Cable Analyzers Operator’s Manual 17