IV and IV Retest use only the receiver's "percentage" numbers. The minimum levels vary by zip code. The levels seem to be built into the IRDs, as forcing a download seems to change the values enforced. Recently, they seem to check more transponders, but require lower values. ...
Thanks for the info, and is what I suspected as to why my ... well lets just say "less than stellar"
Ka band signal levels here in South L.A. still manage to always pass an IV retest.
In fact in a related issue once during a D* tech. training video I watched about the ISS department, one of their main complaints of the IV retest procedure was when a sub. moves from an area of the country with higher level signal requirements to that of a lower one and they fail to get notification from D* of the address change for that sub.'s account in their system. Therefore during any service call to that sub. that mandates an IV retest as a part of it, the test then keeps failing no matter what the tech. does. The tech. then regularly calls ISS out of frustration where they have to sort it out.
... IV via the AIM measures SNR, LNB offset, and power level.
Now I know this can't be referring to the LNB offset angle of the dish the AIM is measuring
So what's this a measure of, the LNB's L.O. frequency error or something?
... The SWM LNB can be placed in peaking mode by having no receivers connected.
In my area in peaking mode, the top dBm value of the 101 seems to be about -22. On a legacy LNB it is about -30. We use WNC LNBs in both cases.
OK great, this and the info. from Robert E earlier really clarifies how the SWM LNBs are peaked. And I guess this is the reason a "flattened" peak response curve theorized a while back by VOS which indeed should exist if the agc circuit is active was strangely never reported by the installers when peaking the dish.