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[EMAIL PROTECTED] wrote:
To the best of my knowledge, the best measurement of the Rb ground state hyperfi
ne frequency comes from the LPTF group in Paris, 6 834 682 610.904 333 Hz, with
an accuracy of a few parts in 10^15, by dire
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Brooke Clarke wrote:
> Hi:
>
> The DG535 Four Channel Digital Delay/Pulse Generator shows
> Ext Clk Error on power up.
> The obvious thing to do is turn the rear panel switch to INT, but after
> powering up with the switch in either
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Hi:
The DG535 Four Channel Digital Delay/Pulse Generator shows
Ext Clk Error on power up.
The obvious thing to do is turn the rear panel switch to INT, but after
powering up with the switch in either position the same error message
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Bob Paddock wrote:
> "The AD8036 and AD8037, from Analog Devices, are wide bandwidth, low
> distortion clamping amplifiers.
> The AD8036 is unity gain stable. The AD8037 is stable at a gain of two or
> greater.
> These devices all
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From: Dr Bruce Griffiths <[EMAIL PROTECTED]>
Subject: Re: [time-nuts] ? phase comparison or other device
Date: Mon, 02 Jul 2007 10:02:44 +1200
Message-ID: <[EMAIL PROTECTED]>
> Bob
>
> What is the application for which you want to u
Bob Paddock wrote:
>> These devices are a little noisy below 100Hz.
>>
>
> Rather than constantly battle the "there is to much noise", what are
> your thoughts on deliberately injecting out-of-band noise?
>
> As an example:
> http://www.analog.com/UploadedFiles/Application_Notes/319765654AN-41
Hello,
currently I'm testing frequency stability of an OCXO from NDK.
The HP5370B is in the External Holdhoff & External Arm mode.
From a pulse generator I apply a 10sec ON, 100ms OFF TTL signal to
the External BNC jack, so I get a 10 sec long gate time for averaging
jitter effects much qui
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Brian Kirby wrote:
> If you are using a HP5370B time interval counter and logging data from
> the HPIB bus, can I inquire to what you are using for an interface to
> the HPIB bus and what do you log the data with ?
>
> I am basicall
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> These devices are a little noisy below 100Hz.
Rather than constantly battle the "there is to much noise", what are
your thoughts on deliberately injecting out-of-band noise?
As an example:
http://www.analog.com/UploadedFiles/Appl
Yes; ESC itself may be escaped by ESC. In other words, three characters --
CR, LF and ESC -- need to be escaped, by preceding them with ESC (27), if
they appear in the input data stream.
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of John Miles
Sent: Su
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Cool! -- I assume that ESC also works that way, right (ESC ESC sends a
single ESC character)? Is ESC just ASCII 27 as usual? I can support that
in the GPIBLIB.DLL layer without much trouble.
I was called out of town on family busin
The latest version of Prologix GPIB-USB controller firmware (v4.65)
available at http://prologix.biz/update.html allows binary data
transmission. CR (ASCII 13) and LF (ASCII 10) may be escaped by preceding
them with the ESC (ASCII 27) character.
-Original Message-
From: [EMAIL PROTECTED]
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I've got a basic data-logging example that works with NI and Prologix
adapters (see 5370b.cpp in www.ke5fx.com/gpib/setup.exe ). There is one
caveat on the Prologix boards that might apply to the Softmark adapter as
well, though: you
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If you are using a HP5370B time interval counter and logging data from
the HPIB bus, can I inquire to what you are using for an interface to
the HPIB bus and what do you log the data with ?
I am basically trying to capture 1 second
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> Thank you all for your replies. It still begs the question of why
> NIST and PTB disagree by nearly 5 Hz on their web pages - I'll write
> and ask them, and report back what they say.
>
> Regards,
>
> Peter Vince (G8ZZR, Londo
Bob Paddock wrote:
> On Saturday 30 June 2007 10:15, Dr Bruce Griffiths wrote:
>
>
>> Not true, there's nothing magic about amplifier saturation, any means
>> that limits the amplifier output whilst dropping the small signal gain
>> to a low value will have exactly the same effect.
>>
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On Saturday 30 June 2007 10:15, Dr Bruce Griffiths wrote:
> Not true, there's nothing magic about amplifier saturation, any means
> that limits the amplifier output whilst dropping the small signal gain
> to a low value will hav
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Thank you all for your replies. It still begs the question of why
NIST and PTB disagree by nearly 5 Hz on their web pages - I'll write
and ask them, and report back what they say.
Regards,
Peter Vince (G8
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From: "Juerg Koegel" <[EMAIL PROTECTED]>
Subject: [time-nuts] ? phase comparison or other device
Date: Fri, 29 Jun 2007 19:08:47 +0200
Message-ID: <[EMAIL PROTECTED]>
> Another article (with practical hints) is
>
>
>
> OPTIMIZATI
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From: Peter Vince <[EMAIL PROTECTED]>
Subject: [time-nuts] Exact Rubidium frequency
Date: Sun, 1 Jul 2007 00:11:34 +0100
Message-ID: <[EMAIL PROTECTED]>
> Everyone on the 'net agrees on the frequency of the Caesium
> oscillation, bu
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