Absolutely... the plot is mainly to show what to expect from the little OCXO, not the board. It ain't a BVA, but for the price and size, it's not bad.
On Dec 23, 2017, 4:56 PM, at 4:56 PM, Bob kb8tq <kb...@n1k.org> wrote: >Hi > >Looks neat !!! > >It is a pretty good bet that everything you see in the ADEV plot is a >function of the >specific OCXO you put on the board. Put another way, the. board’s ADEV >is way >better than the ADEV of the OCXO. It’s a very safe bet that everything >past 2 seconds >or is the OCXO. > >Bob > >> On Dec 23, 2017, at 4:00 PM, John Ackermann N8UR <j...@febo.com> >wrote: >> >> I've developed a little board called the PulsePuppy that supports >surplus OCXOs in the common "Eurocase" form factor to provide outputs >at 10 MHz, or at 1 PPS/10 PPS/100PPS using an on-board 12F675 PIC with >one of TVB's picDIV firmware images. >> >> The attached pictures show one prototype unit in closeup, and a panel >of three that are used for TICC counter production testing (providing >one 10 MHz and two independent PPS outputs). Also attached is an ADEV >plot of the inexpensive Isotemp OCXO131-100 oscillator I'm using to >give an idea of the performance you can expect from these small >oscillators (they and others like them are available from several eBay >sources for <$30). >> >> The PulsePuppy is available from TAPR as a semi-kit and can be >ordered at http://tapr.org/kits_pp.html for $69. We expect to ship the >kits in mid-February (delivery of the boards from our contract >manufacturer is the gating factor). >> >> The assembly manual with schematics can be downloaded at >http://www.tapr.org/~n8ur/PulsePuppy_Manual.pdfm but here are the specs >in brief: >> >> * Footprint for either Eurocase OCXO or Crystek CXOH20-BP-10.000 >> TCXO (TAPR has a bunch of these TCXOs remaining from another project >> and, while they last, is offering them bundled with the PulsePuppy >> for an attractive price). >> >> * PPS divider uses TVB PD-13 firmware that includes capability to >> synchronize to an external clock. >> >> * TTL-level output at jumper-selectable 10 MHz, 100 PPS, 10 PPS, >> or 1 PPS rates. >> >> * A BNC output connector is included, but the board contains a >footprint >> to install a user-provided SMA. >> >> * 25-turn EFC trimmer with 0-5V range. >> >> * Option to support sine-wave as well as square wave oscillators. >> >> * Board dimensions are 1.5 x 3.5 inches. >> >> TAPR is offering the PulsePuppy as a "semi-kit" that includes the >printed circuit board with all surface-mount components installed, and >a handful of through-hole parts (like voltage regulators, jumpers, and >connectors) for the user to install. By leaving these parts for the >user, the board can be customized -- for example to use different >voltages or to support a sine-wave oscillator. >> >> Note that the kit DOES NOT include the oscillator, unless you buy the >Crystek TCXO bundle. >> >> Happy Holidays to all! >> >> John >> ><PulsePuppy-Multi_small.jpg><PulsePuppy_rev_b_small.jpg><Isotemp_OCXO131-100-hp5065a-adev.png>_______________________________________________ >> 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. _______________________________________________ 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.