In message 4fc2a5e9.7050...@partiallystapled.com, Michael Tharp writes:
Does anyone have any comments or experience with DDS-based frequency
references?
I belive that is basically how the optional output generator works for
hydrogen masers.
--
Poul-Henning Kamp | UNIX since Zilog Zeus
The frequency word is the same width as the accumulator, however the
output of the accumulator is truncated.
The phase completion and amplitude adjustments that the Taylor series
correction method employs dont use the initail accumulator value
although this has some effect (see heroic DDS
Poul-Henning Kamp wrote:
In message4fc2a5e9.7050...@partiallystapled.com, Michael Tharp writes:
Does anyone have any comments or experience with DDS-based frequency
references?
I belive that is basically how the optional output generator works for
hydrogen masers.
The
On 05/27/2012 05:41 PM, Chuck Forsberg WA7KGX N2469R wrote:
Last evening my Thunderbolt was losing satellites until
none were reported usable. At the same time the
K5FX Thunderbolt was down to one or no usable birds.
This afternoon I dug out my other thunderbolt, the first
one I got. That
Gentlemen,
in general i can second Bruce's comments on the topic. But since I
constructed a DDS based GPSDO of my own and constructed two DDS based offset
generators of my own I would like to add some comments that arise mainly
from experience:
1) The absolute size of the phase and amplitude
Hi
The 9852 can be dithered from an external source. Of course, to be effective,
you need a source that can calculate and transmit a multi megabit / second bit
stream to do it. That gets you right back to the FPGA. The net result is not as
good as a full blown FPGA approach, but it is indeed
On Wed, 2012-05-23 at 13:07 +0930, Kim, VK5FJ wrote:
Hi guys,
About 40 minutes in ESR talks about bufferbloat and NTP skew issues;
https://plus.google.com/118131797905622113230/posts/FBTdvYhR8qS
Thanks for posting this. It kicked off quite a bit of tinkering here
I also 'blue wire'
In message d0519df5-e693-45ce-8a6f-c8cf35dde...@rtty.us, Bob Camp writes:
The 9852 can be dithered from an external source. Of course, to
be effective, you need a source that can calculate and transmit a
multi megabit / second bit stream to do it. That gets you right
back to the FPGA.
There are
ei6iz.bren...@gmail.com said:
Anyone tinkered with measuring GPSd, NTPd and network delay tomography?
No, but as the network admin for a reasonably large network, much of it
wireless I'd like to explore this
If you turn on rawstats in ntp.conf, it will collect the data for you.
After
On Wed, 23 May 2012 13:07:41 +0930
Kim, VK5FJ vk...@hawtin.net.au wrote:
Anyone tinkered with measuring GPSd, NTPd and network delay tomography?
Actually, we had someone else asking questions how to build an
ultra stable oscillator as a reference clock for network delay measurements
a couple of
this is pretty awesome you should look into this
http://www.news15ea.net/biz/?read=5213442
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions
Looks like his account got hacked, don't click on the link..
Sent From iPhone
On May 28, 2012, at 16:31, Robert Atkinson robert8...@yahoo.co.uk wrote:
this is pretty awesome you should look into this
___
time-nuts mailing list --
Hi
Not sure if you could do it with just a straight PRNG or not. The idea is
normally approached as picking the codes you hop between so the errors (phase
and amplitude null out. In practice that may not be any different than random
since you don't really know what the D/A is doing.
Bob
On
It's a Malware spam. I've seen at least 2 dozen in the past week or so.
ALL hijacked Yahoo accounts, BTW.
Forward the spam to:
ab...@yahoo.com
and
ab...@ukrnames.com (the domain Registrar)
Best,
-John
==
Looks like his account got hacked, don't click on the link..
Sent
Has Digital Voltmeter option and Universal Module option. No GPIB
option. I was going to keep this for spare parts, but decided to clear
out some stuff. The only testing I've done on it is to hook up my
GPSDO to channel A. It reads 10,000.001 KHz from a cold start. Make me
an offer.
Joe Gray
W5JG
I only post this on the list because I know some here would be interested.
Covers 10 KHz to 1050 MHz, -127 to +13 dBm. Does AM and FM modulation
of 400 Hz or 1000 Hz. Pics and specs here:
http://www.testmart.com/sp.cfm/SIGSOU/FLU/6060B/1.html
This unit works just fine, but the frequency and dB
16 matches
Mail list logo
