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
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
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
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
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.
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
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
<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
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
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
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
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
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
)
-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
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
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
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
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
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