[time-nuts] z3801a, z3805a, z3815a, z3816a, thunderbolt and thunderbolt

Mark C. Stephens marks at non-stop.com.au
Wed Nov 30 04:08:01 EST 2011

Hey Thanks for the reply, I have 2 uses for the GPSDO, ref clock for NTP server or 10mhz ref clocks for the labs.

If I find one is not suitable for one task, I can try it on another.

I have built a few GPSDO and regularly change oscillators, so I have a good idea about the circuitry and performance.

Having said that it gets very hard to approach a professionally designed unit.

Actually, I am toying with the idea of 3 separate Thunderbolts connected to NTPD using thunderbolt drivers. Each of the Trimble's will use a separate antenna (3 active antenna cost less than a splitter, go figure)

But I am beginning to ask myself why?! Isn't it good enough already?


Date: Tue, 29 Nov 2011 12:20:45 +0100
From: Azelio Boriani <azelio.boriani at screen.it>
To: Discussion of precise time and frequency measurement
	<time-nuts at febo.com>
Subject: Re: [time-nuts] z3801a, z3805a, z3815a, z3816a, thunderbolt
	and thunderbolt II
	<CAL8XPmNzspUXNiM-hBMzgP5-sFQadxroQ19_yZNKQgOJmc338Q at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

A long-time data collection? I can test an HP58503A (I think it is the
Z3801A), I have the Z3815A and the TBolt. Of course I need time to test...

On Tue, Nov 29, 2011 at 10:37 AM, Hal Murray <hmurray at megapathdsl.net>wrote:

> marks at non-stop.com.au said:
> > Hi All, Risking opening a potential can of worms, has anyone have a specs
> > roundup of GPSDO?
> > Ideally, Maximums of Phase noise, Jitter, accuracy...
> One of the variables is the quality of the antenna, both position and loss
> in
> the cable.
> --
> These are my opinions, not necessarily my employer's.  I hate spam.
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