[time-nuts] TADD-2 mini LED?

Reading the operating manual of the TEDD2-mini is write: Three LEDs indicate sync status as well as PPS activity and: You now have a choice to make about use of the AUX PPS/LED pad but in the schematic is not drawn any connection for the two more led as in the old version of the PPS divider.

Re: [time-nuts] HP 5372A advice

Thanks Gary, Thanks very much for your very helpful reply. I found those 2 operators manuals and downloaded them. The Keysight website is slightly confusing as those manuals were not in the same place as the others I found. I now have some great reading to catch up on!! Morris From: Gary

Re: [time-nuts] Generating a solid PPS from 10Mhz source

On Wed, 20 Jan 2016 17:56:31 -0500 Bob Camp wrote: > > Interestingly, some were close to 0ps, for which > > we have no good explanation. > > The explanation is fairly simple, you have a clock and a “data pulse” > flying down the delay / carry chain. With an ASIC you could make

[time-nuts] Looking for UTC OCXO datas

Hello, I am looking for the datas of an OCXO UTC refrence A08663-01 MY3109 10MHz Thanks in anticipation for the help ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and

Re: [time-nuts] Generating a solid PPS from 10Mhz source

Hi > On Jan 21, 2016, at 5:48 AM, Attila Kinali wrote: > > On Wed, 20 Jan 2016 17:56:31 -0500 > Bob Camp wrote: > >>> Interestingly, some were close to 0ps, for which >>> we have no good explanation. >> >> The explanation is fairly simple, you have a clock

Re: [time-nuts] Generating a solid PPS from 10Mhz source

Hi The PLL cocks in MCU’s are abut the worst jitter monsters out there. It’s clear they only make them as good as they need to be for the internal MCU logic. The PLL’s in the FPGA’s I’ve tested are much better jitter wise. Part of the issue is that the FPGA VCO’s will “pull” a few percent.

Re: [time-nuts] TADD-2 mini LED?

I'm not in front of the manual or the board right now, but if you look at the layout you will see two pairs of pads at the output end of the board. If you look at the way the pads are physically arranged along with the schematic, you'll see that you can either connect to two of the pads to

[time-nuts] low noise multiplication to 100 MHz

My tiny 100 MHz low noise OCXOs are unexpectedly delayed at the mfr, and I'm looking at alternative schemes. One is to get 10 or 20 MHz OCXOs (typically in stock) and multiply them up. I've got the Wenzel ap notes on 2diode and using HCMOS (and I've used the packaged Wenzel multipliers), and I

Re: [time-nuts] low noise multiplication to 100 MHz

Have you considered synthesizers? I am using an Analog Devices AD9517 to drive a A/D converter at 250 MHz. It has many clock outputs that are independently configurable. It is intended for low jitter applications. Pete. On 1/21/2016 9:43 AM, jimlux wrote: My tiny 100 MHz low noise OCXOs

Re: [time-nuts] low noise multiplication to 100 MHz

It is interesting that the HP8662A multiplies 10 MHz to 640 MHz, in steps of 2X. But there is a crystal filter at 80 MHz to clean up the wideband noise of the 10811. In the 11729, they filter the 640 MHz from the 8662 with a SAW filter, again to eliminate multiplied up wideband noise. It's

Re: [time-nuts] low noise multiplication to 100 MHz

On 1/21/16 7:17 AM, Peter Reilley wrote: Have you considered synthesizers? I am using an Analog Devices AD9517 to drive a A/D converter at 250 MHz. It has many clock outputs that are independently configurable. It is intended for low jitter applications. So you run the PLL VCO at 1 GHz or

Re: [time-nuts] HP 5372A advice

The main feature in the '72 compared to '71 is the hardware accelerated histogram function. This allows you to do millions of histogram samples a second rather than being limited to the processor to do the calculations. The '72 have some more analysis modes. HP had this to offer:

Re: [time-nuts] low noise multiplication to 100 MHz

Am 21.01.2016 um 15:43 schrieb jimlux: My tiny 100 MHz low noise OCXOs are unexpectedly delayed at the mfr, and I'm looking at alternative schemes. One is to get 10 or 20 MHz OCXOs (typically in stock) and multiply them up. I've got the Wenzel ap notes on 2diode and using HCMOS (and I've used

Re: [time-nuts] low noise multiplication to 100 MHz

On 1/21/16 9:26 AM, Richard (Rick) Karlquist wrote: It is interesting that the HP8662A multiplies 10 MHz to 640 MHz, in steps of 2X. But there is a crystal filter at 80 MHz to clean up the wideband noise of the 10811. In the 11729, they filter the 640 MHz from the 8662 with a SAW filter, again