I see no conflict for a *FILTER* knob if turned to the right (clockwise) towards the plus sign the filter widens (as indicated by the display on the radio)
for the *SPAN* located on the P3 after the Span button is tapped the the P3's knob if turned to the right (clockwise) the span widens/increases the discrepancy is within your head and how *you* choose to interpret what the knob should be referencing to the entire display (frequency span) or the tiny little parts of the display that represent the filter widths within the entire display apples and oranges GB & 73 K5OAI Sam Morgan On 8/7/2011 8:02 PM, Luis V. Romero wrote: > Don: > > Do you understand TV waveform monitors? When you look at a NTSC transmitter > output waveform, the white level is on top and the sync tip is at the > bottom. This is upside down, as the sync tip is peak transmitter modulation > and white is low modulation. But the graphical representation was designed > for a USER, who is tasked with adjusting levels on a camera, and not a > transmitter, and it is easier, logically, to deal with the adjustments when > white is at the TOP of the graphical representation instead of the bottom. > > I am quite familiar with spectrum analysers. And I can understand the issue > you raise, because in spectrum analysers, yes, SPAN functionality as its > illustrated on the P3 makes sense... within the context of a spectrum > analyser! Yes, I understand what SPAN is; and if the unit was a actual stand > alone "spectrum analyser" lab instrument, you would be completely accurate > logically, because it wouldnt have the width control on the K3 to clash > with. But its not a spectrum analyser lab instrument, it is a "receiver > accesory" with a "graphical display" of the K3 signal reception conditions. > > We are showing the WIDTH of the filter in the picture representation of the > K3 filter WIDTH. And it makes sense in the graphical representation of the > action because as you turn the knob to widen the bandwdth, the picture > "icon" widens. > > This behavior then clashes with the SPAN control, which shows a graphical > representation of the WIDTH of the scan. Using the original logic as > defined in the K3 WIDTH control, it is backwards from the established > control logic of the K3 width control. > > It wont make me lose sleep, and I may ultimately adjust, but I am simply > stating the clash of the control's behavior as applied to the usage of the > instrument for its intended purpose. Since the logic of what we are doing > here is to show the WIDTH of the spectrum we are displaying, the logic fails > because when we turn to the left, it gets bigger and when we turn to the > right it gets smaller, and, the following is important, it does this against > the convention set by the K3 width control. > > However, if the width control worked like it works on Yaesu equipment, there > would be no clash. I remember a similar discussion about the K3 Width > control on the reflector a few years back and all the angst because it > worked "backwards". Simply stated; Product Management needs to choose a > standard and stick with it across the product for the sake of the user! > > So, taking into account the K3 width control's logic, what's wrong with the > option to make it either way, via a menu setting, other than time and > resources? > > Do other minds think like mine? > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
