Hf Real-Time Waterfall - Wavecom W40PC Manual

dimensional Real-Time-FFT display only shows a fraction of the data, depending on the
modulation method. In contrast the FFT waterfall display gives a display also in the time
domain
Waterfall analysis is started by clicking on a desired bandwidth "BW 500 Hz", "BW 1000
Hz", "BW 4000 Hz" or "BW 24 kHz".
The W51PC also supports "BW 2 kHz", "BW 48 kHz", "BW 96kHz".
A time histogram is displayed on the right-hand side of the display.
The options "Average Factor" and "Window Type" are identical to the same Real-time
FFT functions.
From the "Options/Period" menu the time unit per measurement may be selected. The
lowest value is 50 ms corresponding to a sampling rate of 20 pictures/s. For the highest value
of 10'000 ms a measurement is done once every 10 seconds, giving a total time span of more
than 400 seconds.
By clicking on the graph the display will be paused and measurement cursors appears.
Several color schemes are available through the right-click menu.

HF REAL-TIME WATERFALL

The Analysis is started with the input, gain, translation frequency etc. that was used, last time in a HF mode. This
selection is only available in the menu Preferences... the "When selecting the toolbar
"Analysis Buttons" start HF analysis mode" is not enabled. (See Preferences... on page 54)
76 • Advanced Topics
WAVECOM Decoders v6.15 W40PC, W41PC, W51PC