Top/Base Calculation Method (Pulse)

Menu Path: MeasSetup > Pulse Properties > Regions

Determines the calculation method used to measure the per pulse 100% Top Level and 0% Base Level threshold reference quantities.

The per pulse measured 100% Top Level and 0% Base Level results are reported as Top Level (dBm deciBels referenced to a milliWatt: dB relative to 1 milliwatt dissipated in the nominal input impedance of the analyzer) and Base Level (dBm), and Top/Base (dB) metrics within the Pulse Table, Current Record Statistics, and Cumulative Statistics tables.

Supported Top/Base amplitude level calculations are performed in fundamental measurement units of Volts based on methods described in IEEE Institute of Electrical and Electronics Engineers. A US-based membership organisation that includes engineers, scientists, and students in electronics and related fields. The IEEE developed the 802 series wired and wireless LAN standards. Visit the IEEE at http://www.ieee.org Std 181-2011, where bi-modal histograms are generated for each individual detected pulse. The bi-modal histogram is then split into two sub-histograms representing pulse-on (Top) and pulse-of (Base) sample regions. Top and Base levels are derived as either the Mode, Median or Mean levels from each of the respective sub-histograms.

Valid selections for Top/Base Calculation Method are:

• Mode
  • Top and Base levels derived as the pulse sub-histogram mode levels.
• Median
  • Top and Base levels derived as the pulse sub-histogram median levels.
• Mean
  • Top and Base levels derived as the pulse sub-histogram mean levels.

Performance metric results affected include:

• Top Level (dBm)
• Base Level (dBm)
• Top/Base (dB)

Default selection: Median