Hi; I may have a LPRO unit, if so I will post pictures. Best Wishes; Thomas Knox
> Date: Sun, 26 Aug 2012 21:08:03 -0500 > From: [email protected] > To: [email protected]; [email protected] > Subject: Re: [time-nuts] re ET-6000 firmware > > The manual I have isn't too clear on the differences between the units > but the drawing shows an LPRO tucked into the left front of the unit > with 2 coax cables going to the PC board (EFC, OSC), and one going to an > additional power supply in the right rear. The ET-6000 DAC is 0-5V > (actually 0.5-4.5 I think) so the LPRO will probably work without any > adjustments other than the new firmware which contains the appropriate > gain and filter constants. > > I believe all you need to do is: > Remove the TCXO (or cut the trace from the output) > Connect the 10 MHz from the LPRO to J3 (OSC in) > Install a suitable resistor at position R96 (it shows "51 1" - 51 ohm, 1 > watt?) > Connect J2 (DAC out) to the LPRO > Install an appropriate power supply for the LPRO > > Somebody mentioned a while back that the units with the LPRO in them ran > very hot. > > -Bob > > On 08/26/2012 02:05 PM, Joe Leikhim wrote: > > Bob; > > I have a TCXO version and wonder apart from the ROM change, what > > recommended hardware is required to install a rubidium osc? Is there a > > parts list somewhere? I would prefer not to cobble up if I can help it. > > > > -------- > > I finally got a flash programmer so I uploaded all three ROM images > > (TCXO, OCXO, Rub) for the Datum ET-6000 / 9390-6000 to the KO4BB > > website. Last year I sent them 3 chips and asked for all the variants > > so I could play with converting my TCXO unit to an OCXO unit (and > > potentially a Rubidium some day). I think the images are in the > > upload > > folder awaiting their final home. > > > > This latest firmware addresses the GPS date problem. > > > > DT101E = TCXO > > DT102E = OCXO > > DT103E = Rubidium > > > > Some guy is selling DT101E chips on eBay for $50 (sorry if you're > > on the > > list...) > > > > -Bob > > > > > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
