Re: [time-nuts] Low Cost GP-IB PCI card?

In message <[EMAIL PROTECTED]>, "Joseph Gray" writes: >> Can anyone recommend a low cost GP-IB PCI card (and cable) that works >> with FreeBSD and/or linux? The only two that work with FreeBSD are the PC2A (or PCIIA) and PCI-GPIB -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [EMAIL PR

Re: [time-nuts] Low Cost GP-IB PCI card?

Slightly off topic, but I just stumbled across this software. http://www.codeproject.com/dotnet/FreeCal.asp It looks interesting. ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

Re: [time-nuts] Low Cost GP-IB PCI card?

Nice to know that they actually work :-) I don't need one myself right now, as I already have a NI Ethernet-GPIB controller that I bought on ebay last year. However, I'm going to keep that USB-GPIB controller in mind for future needs. Reading the web page, it appears to the system as a virtual seri

Re: [time-nuts] Low Cost GP-IB PCI card?

> I found that USB-GPIB controller. Looks like BSD and Linux are supported. > http://www.sparkfun.com/commerce/product_info.php?products_id=549 Hi, I bought one on Ebay, they work quite well. They used to be $99 at Sparkfun, now they raised the price, and it is out of stock... __

Re: [time-nuts] Low Cost GP-IB PCI card?

I found that USB-GPIB controller. Looks like BSD and Linux are supported. http://www.sparkfun.com/commerce/product_info.php?products_id=549 ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

Re: [time-nuts] Low Cost GP-IB PCI card?

You might wish to check out http://groups.yahoo.com/group/hp_agilent_equipment Subject: HP-IB vs GP-IB Might give you a research track to start on. Jack -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of John Ackermann N8UR Sent: Saturday, July 08, 2006 4

Re: [time-nuts] Low Cost GP-IB PCI card?

Glenn Powers said the following on 07/08/2006 05:27 PM: > Can anyone recommend a low cost GP-IB PCI card (and cable) that works > with FreeBSD and/or linux? The National Instruments GPIB-PCI card goes for around $200 on eBay and works well with the Linux-gpib driver. John _

Re: [time-nuts] Low Cost GP-IB PCI card?

I don't think there is such a thing as a "low cost" GPIB card. Sometimes you can find one on ebay for an ok price, but not often. There was a USB to GPIB adapter that was mentioned on this list a while back. It was inexpensive. - Original Message - From: "Glenn Powers" <[EMAIL PROTECTED]>

[time-nuts] Low Cost GP-IB PCI card?

Can anyone recommend a low cost GP-IB PCI card (and cable) that works with FreeBSD and/or linux? thanks, glenn ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

[time-nuts] undisciplined LPRO and TAI

Assuming the 10 MHz output is divided down to 1 PPS and the 1 PPS is set to within 1E-7 of TAI via GPS. About how long should an undisciplined LPRO-101 remain with 1 second of TAI? How long should it remain within 1E-6 second of TAI? The Symmetricom site says: * <5E-11/Month Aging and "The L

Re: [time-nuts] PLL Phase Noise vs. Divider Jitter

> > In the previous thread, "HP 58540A Phase Noise Improvements", Matt Ettus > > noted the following: > > > > The jitter that is added by a divider would most probably pose a greater > > limit to the phase noise of the PLL than that of the specific OCXO used. > > This sounds a little strange. Most

Re: [time-nuts] PLL Phase Noise vs. Divider Jitter

> I'm aware that they use mixers at higher frequencies, but what are one's > alternatives at low frequencies such as a 10MHz reference? The real answer is not to divide down your reference. This takes modern PLL chips capable of using a high reference frequency. If you need fine tuning capabilit

Re: [time-nuts] PLL Phase Noise vs. Divider Jitter

From: "Stephan Sandenbergh" <[EMAIL PROTECTED]> Subject: [time-nuts] PLL Phase Noise vs. Divider Jitter Date: Sat, 8 Jul 2006 17:34:36 +0200 Message-ID: <[EMAIL PROTECTED]> > Hi All, Stephan, You keep on posing various questions! Keep it up! ;O) > In the previous thread, "HP 58540A Phase Noise

Re: [time-nuts] PLL Phase Noise vs. Divider Jitter

Hi Hi, I'm aware that they use mixers at higher frequencies, but what are one's alternatives at low frequencies such as a 10MHz reference? Regards, Stephan. > > High frequency PLLs made for low-phase-noise applications typically > use mixers instead of dividers. They often use a step recov

Re: [time-nuts] PLL Phase Noise vs. Divider Jitter

At 5:34 PM +0200 7/8/06, Stephan Sandenbergh wrote: >Hi All, > >In the previous thread, "HP 58540A Phase Noise Improvements", Matt Ettus >noted the following: > >The jitter that is added by a divider would most probably pose a greater >limit to the phase noise of the PLL than that of the specific O

[time-nuts] PLL Phase Noise vs. Divider Jitter

Hi All, In the previous thread, "HP 58540A Phase Noise Improvements", Matt Ettus noted the following: The jitter that is added by a divider would most probably pose a greater limit to the phase noise of the PLL than that of the specific OCXO used. Now my question: How can one divide a digital