[time-nuts] Why a 10MHz sinewave output?

[Mark Spencer]

A 10Mhz to T1 clock generator would be a cool project but in the event I were to need a standalone T1 clock source at home I'd probably just grab a CSU / DSU from ebay (or ask one of my former employers if they would let me acquire one from their junk pile) that could serve as clock generator.   

One day I suspect I'd eventually find a use for two such devices to set up a networked set of pbx's (each with it's own clock source) in my basement to prove to a former colleague of mine that you really can network pbx's together via T1's without one pbx being the master and the other a slave from a clocking perspective.  This project will likely need to wait for my retirement.

--- On Tue, 2/7/12, Hal Murray <hmurray at megapathdsl.net> wrote:

> From: Hal Murray <hmurray at megapathdsl.net>
> Subject: Re: [time-nuts] Why a 10MHz sinewave output?
> To: "Discussion of precise time and frequency measurement" <time-nuts at febo.com>
> Received: Tuesday, February 7, 2012, 2:12 PM
> 
> lists at rtty.us said:
> > Thank goodness for that inertia. I can still cable up a
> 100Kcps sine wave
> > standard to run stuff from "long ago". When I run into
> a box that uses a T1
> > signal for a clock reference - not so easy in the
> basement. 
> 
> How much gear is there that uses T1 for a clock input?
> 
> Is there any interest in a board/chip/whatever that converts
> 10 MHz to T1?  A 
> clean design using a decimal DDS should fit into a small
> FPGA, maybe a CPLD.
> 
> -- 
> These are my opinions, not necessarily my employer's. 
> I hate spam.
> 
> 
> 
> 
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