Search found 13 matches

by ab6wl
Thu Jun 25, 2015 12:12 am
Forum: Yahoo groups backup
Topic: xtal-filter stopband attenuation
Replies: 19
Views: 1470

Re: xtal-filter stopband attenuation [3 Attachments]

<r>Attachments :<LIST type="decimal"><s>[list=1]</s><LI>[url=file:///C:\Users\jose\AppData\Local\PG Offline 4\Attachments\spectrumanalyzer\900Hz RBW Narrow-11164.tiff t=_self]900Hz RBW Narrow-11164.tiff[/url]</LI><e>[/list]</e></LIST>[/list]Hello Again,<br/> <br/> Just noticed that Markers 2 and 3 w...
by ab6wl
Thu Jun 25, 2015 12:02 am
Forum: Yahoo groups backup
Topic: xtal-filter stopband attenuation
Replies: 19
Views: 1470

Re: xtal-filter stopband attenuation [3 Attachments]

<r>Attachments :<LIST type="decimal"><s>[list=1]</s><LI>[url=file:///C:\Users\jose\AppData\Local\PG Offline 4\Attachments\spectrumanalyzer\900Hz RBW_Wide.tiff.pdf t=_self]900Hz RBW_Wide.tiff.pdf[/url]</LI><e>[/list]</e></LIST><LIST type="decimal"><s>[list=1]</s><LI>[url=file:///C:\Users\jose\AppData...
by ab6wl
Sun Dec 22, 2013 4:11 am
Forum: Yahoo groups backup
Topic: Troubleshooting Completed MSA
Replies: 6
Views: 612

Re: Troubleshooting Completed MSA

<t>I will add to Scotty's comments that my PLO3 was unlocked because there was a nice solder bridge between R11 and U4-9, thus shorting the output of U4, U4-10, to ground. There are several pads around U4 that are very close to its pads but should not be connected to them. Check carefully for any un...
by ab6wl
Thu Dec 12, 2013 7:47 pm
Forum: Yahoo groups backup
Topic: myVNA and the MSA
Replies: 2
Views: 515

myVNA and the MSA

<t>Hello All,<br/> <br/> I have an MSA/TG/VNA and an N2PK VNA and have used them both to measure the Transmission and Reflection characteristics of two Crystal Ladder Filters.<br/> <br/> I've been using Scotty's Spectrum Analyzer program with the MSA and Dave's myVNA with the N2PK VNA.<br/> <br/> No...
by ab6wl
Sat Oct 26, 2013 5:41 pm
Forum: Yahoo groups backup
Topic: MCF
Replies: 0
Views: 659

MCF

<r>Hello Everyone,<br/> <br/> After looking at all the available info I can find on Scotty's website and in this group for building an MCF with the PWB, it seems to me that the Hy-Q QMF 10725 & 10713 and the NDK 10F15DH are the MCFs of choice for this application. I also found the Raltron 10M8D ...
by ab6wl
Thu Oct 24, 2013 8:39 pm
Forum: Yahoo groups backup
Topic: MSA Software 116 Rev 0 Startup
Replies: 4
Views: 546

Re: MSA Software 116 Rev 0 Startup

<r>Yes, Scotty, that fixed it. Thank you very much.<br/> <br/> One more question, though. When I was doing the Phase AtoD Test, after touching J2 with the negative probe of my VOM and a +5V trace with the positive probe, the display did shift as it should. However, now, in "PDM in Normal" mode, the ...
by ab6wl
Thu Oct 24, 2013 5:41 pm
Forum: Yahoo groups backup
Topic: MSA Software 116 Rev 0 Startup
Replies: 4
Views: 546

Re: MSA Software 116 Rev 0 Startup

<r>P.S. I am using Windows XP, but this does not seem to me to be one of the XP errors that you mention. Also, when I click on "Restart," the display briefly shows "Halt," etc. as at startup but then goes back to "Redraw" and "Restart" with the hourglass there. <br/> <br/> <br/> ---In <EMAIL email="...
by ab6wl
Thu Oct 24, 2013 7:40 am
Forum: Yahoo groups backup
Topic: MSA Software 116 Rev 0 Startup
Replies: 4
Views: 546

MSA Software 116 Rev 0 Startup

<t>Hello Scotty,<br/> <br/> I am attempting to test my ADC that is powered by the PDM, but when I start the MSA Software from your webpage, Rev 0, the program begins briefly with "Halt," etc. in the lower right hand corner but then quickly switches to "Redraw" and "Restart" with the hourglass consta...
by ab6wl
Wed Oct 16, 2013 12:22 am
Forum: Yahoo groups backup
Topic: Testing Control Board w/ USB and MSA Software
Replies: 3
Views: 507

Re: Testing Control Board w/ USB and MSA Software

<r>Yep, that did it. On to the A to D Converter.<br/> <br/> <br/> <br/> Thank you, Scotty.<br/> <br/> <br/> <br/> Earle<br/> <br/> <br/> <br/> <br/> <br/> --- In [url=mailto:<EMAIL email="spectrumanalyzer@yahoogroups.com">spectrumanalyzer@yahoogroups.com</EMAIL> t=_blank]<EMAIL email="spectrumanalyz...
by ab6wl
Tue Oct 15, 2013 7:28 pm
Forum: Yahoo groups backup
Topic: Testing Control Board w/ USB and MSA Software
Replies: 3
Views: 507

Testing Control Board w/ USB and MSA Software

<t>Hello Everyone,<br/> <br/> <br/> <br/> I am going through the "A. Control Board" testing on Scotty's website.<br/> <br/> <br/> <br/> With...<br/> <br/> <br/> <br/> 1. A completed Control Board <br/> <br/> 2. An EZ-USB FX2LP Board wired to the Control Board with all drivers installed using Scotty'...