I just got done spending a quarter million on two Agilent spectrum analyzers and spend a good bit of time using them.... I find that for the panadapter use case that having it at the bottom takes much less getting used to that I'd thought it would.
~Brett (N7MG) On Fri, 2010-07-30 at 18:43 -0700, Wes Stewart wrote: > As a guy who had a hand in buying and/or specifying the purchase of millions > of dollars worth of HP equipment (never bought any Agilent, couldn't figure > out how to pronounce it) and who used a lot of it, I also think the reference > belongs at the top. > > But why not a spectrum analyzer mode and a panadapter mode? > > --- On Fri, 7/30/10, Alan Bloom <[email protected]> wrote: > > > As a former HP/Agilent engineer I > > agree. Originally the P3 defined REF > > LVL as the reference level at the top of the screen and > > SCALE was in > > dB/division. But I got talked out of it. > > > > For a panadapter you generally want to set the noise to be > > near the > > bottom of the display. As you change the scale you > > don't want that to > > change. That's the reason for using the bottom of the > > display as the > > reference level. > > > > Also, it goes against my intuition that the reference level > > decreases > > (becomes more negative) as you turn the knob > > clockwise. Again, the > > thought was that for a panadapter, people expect the signal > > to get > > bigger as you turn the knob to the right. > > > > Basically a panadapter and a spectrum analyzer are used for > > different > > purposes so it makes sense that the user interface is > > different. > > Hopefully we got it right. > > > > Alan N1AL > > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
