If you can get access to a 2-channel 'scope, try it instead of a TIC
so you can get some clue as to what's happening. I suspect that one
component of the problem is that the supposedly Hi-Z input of the
counter really isn't but has a stub of unterminated cable between the
input connector and
On Sun, Oct 28, 2018 at 8:31 PM Hal Murray wrote:
>
> drkir...@kirkbymicrowave.co.uk said:
> > I'm feeding a sine wave from a Stanford Research DS345 30 MHz function
>
> Are the levels set so it triggers at the same point? It doesn't look like
> it
> in your photo.
>
> Looks like you are
drkir...@kirkbymicrowave.co.uk said:
> I'm feeding a sine wave from a Stanford Research DS345 30 MHz function
Are the levels set so it triggers at the same point? It doesn't look like it
in your photo.
Looks like you are running at 1 MHz. If the stop trigger is a little
lower/earlier than
I suspect it's triggering or aliasing issues if you're using high frequency
sine waves. The canonical way to do that measurement is with a fast-rise-time
edge at PPS sorts of rates. And you'd normally use a common reference to
reduce the number of variables.
John
On Oct 28, 2018, 8:51 PM,
Have you tried with just a single pulse?
> On Oct 28, 2018, at 20:49, Dr. David Kirkby
> wrote:
>
> I'm trying to do something which would seem conceptually easy, but I'm
> getting results I can't understand. I wish to measure the delay (in
> seconds) of a bit of length of coaxial cable.
>
I'm trying to do something which would seem conceptually easy, but I'm
getting results I can't understand. I wish to measure the delay (in
seconds) of a bit of length of coaxial cable.
I'm feeding a sine wave from a Stanford Research DS345 30 MHz function
generator via a coax to the START input
Hej Anders!
On 10/28/18 1:14 PM, Anders Wallin wrote:
> I made a revised figure with a few improvements:
> - the PSDs now cross at 1Hz
> - the theoretical ADEV/MDEV pre-factors are now explicitly stated
> http://www.anderswallin.net/2018/10/noise-colours-again/
> source:
>
Good morning all,
Some people may remember the Arduino code I wrote for controlling and
monitoring the TruePosition GPSDO I wrote in mid-2017.
I've updated that code to include a couple of new things:
* now gets the store LAT/LONG/ALT and displays it
* adds an LED that lights up when STAT=0
I made a revised figure with a few improvements:
- the PSDs now cross at 1Hz
- the theoretical ADEV/MDEV pre-factors are now explicitly stated
http://www.anderswallin.net/2018/10/noise-colours-again/
source:
https://github.com/aewallin/colorednoise/blob/master/example_noise_slopes2.py
I forget
Hej Ole!
On 10/28/18 9:19 AM, Ole Petter Ronningen wrote:
> Hi, Magnus!
>
> Thank you for this! I am of course nowhere near really comprehending it
> from reading it a couple of times, but I will still show my ignorance by
> asking a couple of questions with respect to the power law noise table.
In message
, Ole
Petter Ronningen writes:
>1. I notice the formulas for ADEV is different for W PM and F PM - ADEV
>does not distinguish between the two, as is pointed out in the article.
When we say ADEV does not distinguish those, we mean that the slope of
the ADEV with respect to
Hi, Magnus!
Thank you for this! I am of course nowhere near really comprehending it
from reading it a couple of times, but I will still show my ignorance by
asking a couple of questions with respect to the power law noise table.
Counting on your day being still non-grumpy.. :D
1. I notice the
Hi, Tom!
I have looked at the pages you link to many times, they really are very
good - my goal here was to get down to the nitty-gritty myself, just
understand the details better.
Regarding possible bias in the Excel RNG, this was my first hunch as well,
but when I repeated the experiment with
13 matches
Mail list logo
