LoopA and LoopB in Panadapter.cs

  • 1
  • Question
  • Updated 3 years ago
  • Answered
Looking thru Panadapter.cs I find the above listed and cannot find what they connect too.
(meaning what value(s) they return to the client, if any. So far, I can get the StreamID, LowdBm,
HighdBm and the bandwidth of the current panafall. But, still cannot find the actual arrays of data for the panadapter itself.(and I can set LowdBm, Center Frequency, HighdBm, bandwidth etc. just fine) In Vita.VitaFFTPacket.cs there are several things that look like they should return the values I'm looking for. But, I cannot seem to get the syntax right to get them.
And "intellsense" in Visual Studio (2010 in this case) does not show several things that appear in VitaFFTPacket.cs at all. So, I'm thinking that what I am seeing there is private to that class and not readable. (at least not in the format that I think I need)
 So, still stumbling around a bit. What a fun way to spend Father's Day! Hope everyone had a good day with family and friends.
james
WD5GWY

  
Photo of James Whiteway

James Whiteway

  • 886 Posts
  • 196 Reply Likes

Posted 3 years ago

  • 1
Photo of Stu Phillips - K6TU

Stu Phillips - K6TU, Elmer

  • 642 Posts
  • 256 Reply Likes
Official Response
James,

LoopA and LoopB refer to the filter/preamp loops that exist on each SCU - one (A) on the 6500, two (A + B) on the 6700.  There is no loop on the 6300.

If you enable the loop (set to 1), the antenna signal is routed out via loop out on the rear panel and back in via loop in.  I don't know whether the loop is before or after the bandpass filters - I am guessing before (and probably likewise the protection diodes).

I'm not familiar with C# (other than code reading FlexLib ;-) but it looks to be that you have to set yourself as a delegate of the Panadaptor stream (DataReadyEventHandler) which is called when a full panadaptor frame is ready for processing.  Its called from Panadaptor.cs via (I think) the DataReady event being triggered with the Pan object and the array of pan data.

Stu K6TU