Try and understand the IF configuration for these projects
Details
Start at 9:15am.
Copy scripts onoff_L11_original and onoff_L11_test to our project directory
All sorts of problems with our understanding, trying to run their scripts.
Discovered that Astrid is apparently not re-reading the python script - put the config into the Astrid script.
What we know / have discovered
Mapping of beams to VEGAS banks is as follows:
B2 -> A, B4 -> B, B5 -> C, B6 -> D, B1 -> E, B1 -> F, B3 -> G, B7 - H
So, beam 1 goes to E and F. Not sure which one is not multiplexed, since IF Manager shows they both have a diplexer?
The dopplertrack frequency somehow affects the IF - but how?
Choose two windows, slightly less than 1.25 GHz apart, explicitly choose both in Bank E, all works as expected.
Remove explicit Bank E. Still sub-bands, as expected.
Move the windows to be 1.5 GHz apart. Switches to two banks, as expected.
Move to Bank2 - still works
Move two windows to be 2.5 GHz apart - doppler track 23250, freqs 22000, 24525. Does not configure correctly.
Put doppler track same as one, so doppler track 24525, freqs 22000, 24525. Does not configure correctly. Why not?
As above. Set broadband = 1. This now works, using Banks A and B.
cannot set beam = -1 with broadband = 1. Set beam = -1, broadband = 0, reverts to E and F, and gets it wrong.
Cannot set broadband=1 for more than 1 beam
Set one frequency to all seven beams, and then the second to beam 1 only. Does not configure correctly for 2.5 GHz apart. beam 1 or -1 makes no difference.
Does configure correctly when lines are 1.5 GHz apart. Beam of -1 and 1 makes no difference.