64
Custom
Sets a custom constellation for modulation. After selecting Custom modulation
type, a custom constellation editing window is displayed, as shown in Figure 2-
41:
In the custom constellation editing window, you can preset the constellation
data to a known modulation type first by pressing
buttons, and
then you can insert or delete constellation points and edit the IQ data for each
constellation point manually. You can also recall constellation data from an
existing file and save the edited constellation data to a new file. “Normalize”
button is used to normalize all constellation data for RMS value = 1.
On the right side of the window, it shows the constellation display of current
editing. You can input a name for the constellation, this name will be displayed
beside the “Custom” modulation item after you click “OK” button. You can also
turn ON or OFF symbol display on the constellation display by clicking “Show
Symbol” button.
Figure 2-40 Multi-tone
Figure 2-41 Custom modulation
