I have those 9954/9854 boards and the problem is the drivers for newer operating systems past XP aren’t available. The AD9854/9954 boards were clones of the AD eval kits and you downloaded the eval kit software from AD. I got the board(s) working with Windows 7 but it took a lot of screwing around. I never got it working with Windows 10. The other issue with those boards are the filters were set really high. All DDS units need a filter on the output though I’m sure the term “all” can be debated. If you have a need to generate a quadrature signal and have access to Windows 7, or better yet, XPSP3, then yes, it is a decent option and seemed to work well. The filters can be handled off-board, especially if you just need 10Mhz as BG7TBL has decent 10Mhz filters for $10 per. I bought a couple and hung them on my RFTG-U REF0 and REF1 outputs and they make a really nice 10Mhz sine wave. Jerry > On Dec 14, 2017, at 3:49 AM, ew via time-nuts <time-nuts@febo.com> wrote: > > Rick > Please contact me off list we did a board for Corby to be used with the HP Rb using a PIC but I would have to better understand your needs to figure out what board to use. > Bert Kehren > > In a message dated 12/13/2017 4:06:01 PM Eastern Standard Time, artgodwin@gmail.com writes: > > > It's a bit bizarre that it uses Basic. I just remember my local ARC using > it as a project sometime ago. Possibly in the 20th century. :) > > > On Wed, Dec 13, 2017 at 9:03 PM, Richard (Rick) Karlquist < > richard@karlquist.com> wrote: > >> This looks like a very good starting point. It's a superset >> that I can just simplify. >> >> Rick >> >> >> On 12/13/2017 12:10 PM, Adrian Godwin wrote: >> >>> Maybe this one ? >>> >>> http://www.qsl.net/pa3ckr/bascom%20and%20avr/ad9951/index.html >>> >>> There are probably many others >>> >>> >>> On Wed, Dec 13, 2017 at 8:03 PM, Richard (Rick) Karlquist < >>> richard@karlquist.com> wrote: >>> >>> I need a very simple controller to tune a DDS with up/down >>>> switches (imagine setting the time on a clock). A DDS >>>> chip, such as an AD9836 would go on a PC board and a couple >>>> of pushbuttons would tell the controller to tune up or >>>> down. >>>> >>>> Before reinventing this wheel, I thought I would see if >>>> anyone knows of a similar solution that can be leveraged. >>>> What I would like is both hardware and software, where >>>> the software could be edited to accommodate the up/down >>>> buttons. A last resort would be to write software from >>>> scratch. My software skills are extremely limited. >>>> Cutting and pasting code might work for me. >>>> >>>> I need to be able to embed this onto an existing PC board. >>>> I can't use a preexisting "daughter" card, other than >>>> to copy the design of the card. >>>> >>>> Rick Karlquist >>>> N6RK >>>> >>>> >>>> >>>> _______________________________________________ >>>> time-nuts mailing list -- time-nuts@febo.com >>>> To unsubscribe, go to https://www.febo.com/cgi-bin/m >>>> ailman/listinfo/time-nuts >>>> and follow the instructions there. >>>> >>>> _______________________________________________ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to https://www.febo.com/cgi-bin/m >>> ailman/listinfo/time-nuts >>> and follow the instructions there. >>> >>> >>> > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

The problem with the 9854 DDS is that the analog reconstruction filters that you have to place after its outputs, are not guaranteed to have *exactly* the same phase behavior  between the two sections (I and Q). This may or may not be important, depending on the application. For sure, for an SDR, even small discrepancies between the two phases, let's say 0.1 degree, can lead to a non complete cancellation of the unwanted sideband, when you implement a zero IF SDR radio. 73  Alberto  I2PHD ============================================================================== On 12/14/2017 5:15 PM, Jerry Hancock wrote: > I have those 9954/9854 boards and the problem is the drivers for newer operating systems past XP aren’t available. The AD9854/9954 boards were clones of the AD eval kits and you downloaded the eval kit software from AD. I got the board(s) working with Windows 7 but it took a lot of screwing around. I never got it working with Windows 10. The other issue with those boards are the filters were set really high. All DDS units need a filter on the output though I’m sure the term “all” can be debated. > > If you have a need to generate a quadrature signal and have access to Windows 7, or better yet, XPSP3, then yes, it is a decent option and seemed to work well. The filters can be handled off-board, especially if you just need 10Mhz as BG7TBL has decent 10Mhz filters for $10 per. I bought a couple and hung them on my RFTG-U REF0 and REF1 outputs and they make a really nice 10Mhz sine wave.