Alles anzeigenBisher nie genutzt und obwohl ich viele Dokumentationen gesammelt und teilweise übersetzt habe, wurde ich bei diesen beiden Funktionen nicht fündig.
Never used before and although I have collected and partially translated a lot of documentation, I did not find anything with these two functions.
and a Feedreport of Hellas Sat for the collection
That's a very good question.
On the forum where it was answered and which we visited, to my deep regret, most of the IQmonitor topic was corrupted.
In fact:
- the number Nm is the number of repeated RF measurements at one frequency, works only when the TBS 6983 checkbox is checked.
But you can use this mode with any card that supports the RFscan function. The spectrum registration time increases by Nm times, but the level of thermal noise in the system decreases by the square root of Nm times. In this case, the frequency resolution of the spectrum does not decrease, as it happens when random noise is suppressed by smoothing, for example, Sm 9.
- the checkbox PGC (program gain control ) leads to a partial (linear law) compensation for the decrease in gain with frequency and the elimination of a step at the frequency of the LNB heterodyne change.