On Oct 6, 2007, at 3:01, Magnus Danielson wrote:
If the sample rate is 44.1 kHz then the adev below 1 s, even
down to 10 us, or jitter, or the phase noise above 1 kHz are
they key parameters; not long-term drift. In this case I'd take
a nice 10811A over a typical Rb any day. Does anyone
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Gentlemen,
I know this is a bit OT but otherwise I also know that some of you are
well acquainted to IEEE-488 data acqusition:
Suppose I can test whether the National Instruments DLL for their range
of IEEE-488 interfaces is
Ulrich,
I do not have a plug-in NI card (I do have a USB type controller from NI
though) so I am not sure what I am going to say will work, but it's worth a
try.
I believe the IEEE-488 controller has its own address (that is not often
used, but the IEEE-488 spec requires that), so you should be
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You are not off base. I know the inventor of the high definition CD standard and
he has the patents on the mastering system. He had made for his company a
special piece of test equipment to measure picosecond jitter. I
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Didier,
I do not have a plug-in NI card (I do have a USB type
controller from NI
though) so I am not sure what I am going to say will work,
but it's worth a try.
I am not sure by 100%, just say 99 % but I believe that
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I have paid my dues in the HiFi world, but I have always insisted that
there be a solid scientific basis for any product I bought.
When faced with claims that picosecond jitter can be perceived by
the human ear, my
On Oct 6, 2007, at 18:48, Poul-Henning Kamp wrote:
When faced with claims that picosecond jitter can be perceived by
the human ear, my flim-flam-o-meter blows a fuse.
A 1 nsec phasemodulation of a 44100 kHz clock signal will, worst
case, come out to an noise component 87 dB below the
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You are way incorrect in your reply. Since this is off-topic I will limit my
reply to a few salient points.
High definition CD is not at 44.1KHz It is much higher so your ratio is off.
The A/D and D/A converters they use are
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Hi, Ulrich --
I only support the GPIB0 device name in my package, so it's easy enough in
my case to do an ibfind(GPIB0). If that returns = 0 (and the ERR flag is
not set in the returned value), then I do an ibonl(GPIB0,0) to
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The current issue of Inside GNSS has a final update on Galileo and GPS
bandplans and the coding for each signal.
Galileo will carry the new SARSAT, receiving from 406 to 406.1MHz then
broadcasting these signals on
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If the sample rate is 44.1 kHz then the adev below 1 s, even
down to 10 us, or jitter, or the phase noise above 1 kHz are
they key parameters; not long-term drift. In this case I'd take
a nice 10811A over a typical Rb any
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Hi, Dave --
That doesn't sound entirely comparable to this one, unfortunately. I do
have a partial clue: the seller left about a centimeter of wire on each of
the 6 terminals. They are:
1 Gray
2 Pink/black
3 Bright red
4
OK John - yes that does sound different, and the clues look quite strong! I
offered the info on the basis that many manufacturers tend to use a fairly
standard pin-out - but maybe not this time!
73,
Dave
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To: Discussion of precise
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In a message dated 10/5/2007 16:28:21 Pacific Daylight Time, [EMAIL PROTECTED]
writes:
OK, not really a time related post...except for the clock in the CD
player...which begs the question, any time nuts play with
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Hi Ulrich,
I'll be glad to. It's here, somewhere :-)
Didier
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Ulrich Bangert
Sent: Saturday, October 06, 2007 11:18 AM
To:
a related very interesting experiment is to take the Horizontal Sync signal
from an old Tube-type TV, and feed it to a frequency counter with GPSDO time
base (preferrably).
Got to be careful about the high voltages inside the TV though!
If you use proximity EM field pickup you don't
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From: [EMAIL PROTECTED]
Subject: Re: [time-nuts] Sputnik
Date: Sat, 6 Oct 2007 22:05:15 EDT
Message-ID: [EMAIL PROTECTED]
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In a message dated
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