Re: [time-nuts] Distributiuon Amlifier Altinex DA1804NT

2015-05-28 Thread cfo
On Thu, 28 May 2015 14:09:36 -0400, Vlad wrote: I am not sure what to blame. ;-) I'm using a TB on a 350Mhz video amplifier 6xRGB , and discovered that the Video DistAmp was clipping the 10Mhz from the TB. I used a 10dB attenuator on the TB signal (6dB would have been better) , but i had

Re: [time-nuts] Distributiuon Amlifier Altinex DA1804NT

2015-05-28 Thread Tom Van Baak
Hi Vlad, Before we get to your phase noise question... Your plots ALTINEX-DA-F.png ALTINEX-DA-T.png look odd and the plot ALTINEX-DA.png shows massive amount of glitches. You must make sure that the frequency and the phase plots look nice before doing an ADEV plot. In this case there's

Re: [time-nuts] Distributiuon Amlifier Altinex DA1804NT

2015-05-28 Thread Vlad
Tom, I agree that spikes looks weird. Looking for the raw data, I see its fluctuate from 9.99958E+6 to 1.49E+7 And here how its spread: #occurr. / FREQ 1 +9.99958E+6 1 +9.99980E+6 1 +9.99981E+6 1 +9.99988E+6 1 +9.99989E+6 1

Re: [time-nuts] Distributiuon Amlifier Altinex DA1804NT

2015-05-28 Thread jerry shirᴀr
I know some manufacturers use pot core transformers on the output signal. HP does it for sure. Any vibration or shock transforms right into the phase error of the signal. IMO, those distribution amps should be avoided as any level of shock or vibration will contribute to jitter. On Thu, May 28,

[time-nuts] Indoor positioning

2015-05-28 Thread Daniel Mendes
From time to time this subject rises again, so i´m sending these links: http://www.electronics-eetimes.com/en/kickstarter-project-offers-indoor-positioning-on-arduino.html?cmp_id=7news_id=222924926vID=209