[time-nuts] Re: Truetime DC-XL usable with Lady Heather?

[Lux, Jim]

On 3/25/22 12:55 PM, Greg Troxel wrote:
> paul swed <paulswedb at gmail.com> writes:
>
>> I thought there was a thread on this a long time ago. Don't seem to find
>> it. But was Lady Heather usable with the truetime dcxl gps receiver. When I
>> probe the dc-xl port it doesn't seem like it has atypical nema stream that
>> would be useful.
> Do you mean "XL-DC"?  I have one, and I used to get NMEA out of it for
> ntpd.  ntpd decoded the NMEA just fine, starting in 1997 or so (on a
> sparc IPX running NetBSD)
>
> Are you getting NMEA but finding it deficient?   Or not getting NMEA?
>
> It is possible NMEA was an option; Truetime and the XL series seems to
> have lots of options.  (Mine has 1 PPS and a 10 MHz out.)


Lots of options is an understatement.  Those things had dozens and 
dozens of options, both in terms of the software and in terms of the 
various cards that can be plugged in. You could get low phase noise 10 
MHz, you could get Rb or a better OCXO, you could get a counter/timer, 
you could get a programmable trigger/rate output and on and on. And sort 
of mix and match among the 4(?) slots.  The one I used had the LN 10MHz 
with built in DA and the hot stuff OCXO and IRIG.  All of those were 
options.

It wouldn't surprise me if NMEA was an option either in software or a 
specific card.