Re: [time-nuts] Inexpensive Alternative to a 5120A

Hi > On Oct 10, 2016, at 7:06 AM, Chris Albertson > wrote: > > Let's back up, start over. I want to use an SDR-like thing to > characterize my new 10MHz oscillator, or actually to compare it to my > Thunderbolt > What are the steps? The test document on an OCXO

Re: [time-nuts] Inexpensive Alternative to a 5120A

Let's back up, start over. I want to use an SDR-like thing to characterize my new 10MHz oscillator, or actually to compare it to my Thunderbolt What are the steps? Then after we list the steps I want to see why so many samples are required Or maybe a better way to ask is "How will the results

Re: [time-nuts] Inexpensive Alternative to a 5120A

The Red Pitaya is a lower cost (but lower performance) alternative to the USRP boxes. I've implemented a RF phase meter using the RP and get about 1 ps time resolution at an averaging time of 1 s. The RP analog input side seems to be a bit noisy so loses a few bits. There was some discussion

Re: [time-nuts] Inexpensive Alternative to a 5120A

Hi > On Oct 9, 2016, at 6:18 PM, Chris Albertson wrote: > > Likely the lowest cost way to get into that is with a TV tuner USB > dongle. They cost about $20. People are able to get about 2.4 mega > samples per second. Except that you need about 30 mega samples

Re: [time-nuts] Inexpensive Alternative to a 5120A

Likely the lowest cost way to get into that is with a TV tuner USB dongle. They cost about $20. People are able to get about 2.4 mega samples per second. Not a lot of dynamic range but you can control that.Use a mixer to move the signal of interest into the range the tuner can handle.

Re: [time-nuts] Inexpensive Alternative to a 5120A

Hi Randal, On 2016-10-07 18:52:57, Cube Central wrote: Is there an alternative that someone could point me to that would cost only a couple hundred rather than (what I expect) is a couple thousand? How would I go about gathering the data needed for these nifty ADEV graphs I see floating

Re: [time-nuts] Inexpensive Alternative to a 5120A

s/GFS-GPSDOs/info From: Cube Central <cubecent...@gmail.com> To: 'Discussion of precise time and frequency measurement' <time-nuts@febo.com> Sent: Friday, October 7, 2016 1:32 PM Subject: Re: [time-nuts] Inexpensive Alternative to a 5120A Thanks Bob, I hope your cold improves, and I thank

Re: [time-nuts] Inexpensive Alternative to a 5120A

<time-nuts@febo.com> Sent: Friday, October 7, 2016 2:03 PM Subject: Re: [time-nuts] Inexpensive Alternative to a 5120A Thanks again, Bob.  I've just ordered the controller you suggested.  No wonder I was running into a mental block, as the port on the back of the 5335A counter

Re: [time-nuts] Inexpensive Alternative to a 5120A

jim...@earthlink.net said: > I happen to use the ethernet one, but I would imagine the USB one also > works fine. I've had more trouble with non-standard USB devices (e.g. not a > disk drive, keyboard, mouse, or serial port) on Linux than on Windows or > Mac OSX - but I don't know what the

Re: [time-nuts] Inexpensive Alternative to a 5120A

October, 2016 12:43 To: Discussion of precise time and frequency measurement <time-nuts@febo.com> Subject: Re: [time-nuts] Inexpensive Alternative to a 5120A Here's the one I recommend: http://prologix.biz/gpib-ethernet-controller.html No, it's not a $35 adapter, but IMO it's worth every dime

Re: [time-nuts] Inexpensive Alternative to a 5120A

becent...@gmail.com> To: 'Discussion of precise time and frequency measurement' <time-nuts@febo.com> Sent: Friday, October 7, 2016 1:32 PM Subject: Re: [time-nuts] Inexpensive Alternative to a 5120A Thanks Bob, I hope your cold improves, and I thank you for that answer.  As I happ

Re: [time-nuts] Inexpensive Alternative to a 5120A

On 10/7/16 11:32 AM, Cube Central wrote: Thanks Bob, I hope your cold improves, and I thank you for that answer. As I happen to have a HP 5335A and I think it has the options 10 and 30. So from there, you are saying that the next step would be a GPIB adapter. Here be dragons, as I have

Re: [time-nuts] Inexpensive Alternative to a 5120A

On 10/7/16 10:31 AM, Bob Camp wrote: Hi Last time I saw a price on a 5120A, it was in the > $30K range. That was a while ago so things may have changed for better or for worse. A TimePod is roughly 1/3 of that. Either way, pretty expensive for a basement lab. Last quote I got on a TimePod

Re: [time-nuts] Inexpensive Alternative to a 5120A

) -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Bob Stewart Sent: Friday, 07 October, 2016 11:21 To: Discussion of precise time and frequency measurement <time-nuts@febo.com> Subject: Re: [time-nuts] Inexpensive Alternative to a 5120A Hi Randal, I've got a ba

Re: [time-nuts] Inexpensive Alternative to a 5120A

On 10/7/16 10:20 AM, Bob Stewart wrote: So, with all that said, start with the cheapest you can afford, and then decide whether you really want to get into serious time-nuttery. It's not an inexpensive hobby, even at the low end. But it's probably cheaper than a diet of loose women and

Re: [time-nuts] Inexpensive Alternative to a 5120A

Hi Randal, I've got a bad cold, so I can only hope this response is rational. To begin with, you need some sort of Time Interval Counter (TIC), as well as some way to get the measurements from it into your computer.  Once you get that, then you get a free copy of John Miles' indispensable

Re: [time-nuts] Inexpensive Alternative to a 5120A

Hi Last time I saw a price on a 5120A, it was in the > $30K range. That was a while ago so things may have changed for better or for worse. A TimePod is roughly 1/3 of that. Either way, pretty expensive for a basement lab. Bob > On Oct 7, 2016, at 12:52 PM, Cube Central

Re: [time-nuts] Inexpensive Alternative to a 5120A

To all : I have all the necessary high end phase noise test SYTEM up to 50 Ghz here at 07457 NJ , if any one needs measurement help , 73 de Ulrich , N1UL Sent from my iPhone > On Oct 7, 2016, at 12:52 PM, "Cube Central" wrote: > > I saw that someone was using one of