[time-nuts] Synergy-GPS SSR-6tru Problem Resolved

[paul swed]

Wow there is a tidbit I did not know Ulrich owns Synergy. I knew he was
part of Rohde & Schwartz and I firmly believe that I actually spoke with
him on 2 meters when I lived in CT on the way to work one day. A 2 meter
opening.

OK the total beg right now. Schematics for the FLL board (Not a typo) of
the SMIQ rf generator.
OK that was very on time-nuts. I apologize to the group.
However it is impressive that they did give you the support. Much as others
had in the past.
Regards
Paul
WB8TSL/1


On Fri, Jul 25, 2014 at 8:51 PM, Alexander Pummer <alexpcs at ieee.org> wrote:

>
>
> Synergy's owner Ulrich Rohde N1UL --DJ2LR/DL1R is a long time ham radio
> operator, and he will go pretty far to help for an other ham,
> 73
> KJ6UHN ex DL...
> Alex
>
>
> On 7/25/2014 5:27 PM, Bob Stewart wrote:
>
>> And while this subject is still up, I want to let the group know that
>> Synergy *really* went out of their way to help me with this.  I was a bit
>> surprised at their level of commitment to some ham radio operator who had
>> bought a single unit from them and probably didn't know what the heck he
>> was talking about.  A real class act all around!
>>
>> Bob - AE6RV
>>
>>
>>
>> ________________________________
>>   From: Art Sepin <art at synergy-gps.com>
>> To: Bob Stewart <bob at evoria.net>; Discussion of precise time and
>> frequency measurement <time-nuts at febo.com>
>> Cc: Tom Van Baak <tvb at leapsecond.com>; Dusty Morris <doxielover57 at cox.net
>> >
>> Sent: Friday, July 25, 2014 5:17 PM
>> Subject: RE: [time-nuts] Synergy-GPS SSR-6tru Problem Resolved
>>
>> Bob,
>>
>> Once in a while a mea culpa is required and we're posting it here so
>> everyone understands our commitment to the users of Synergy's products.
>>
>> The Original Synergy Adaptor Board was designed to allow Motorola's newer
>> 3 volt 12 channel M12+ to plug into an older 5 volt 8 channel UT+ slot.
>> That product worked for hundreds of users over the years until (we found
>> out through your personal aggravation and agony) the recent introduction of
>> Synergy's SSR series of u-Blox based precision timing boards.
>>
>> To make sure that the Synergy UT+ Adaptor Board issue is put to bed
>> properly we asked for an external, formal technical review of this product
>> that was introduced fourteen years ago.
>>
>> The reviewing engineer's first comments were "Ouch! This will not work."
>>  And, "no, the SSR boards do not work the same as the M12 boards on the
>> Synergy Adaptor Board". "The M12+ and M12M receivers have separate serial
>> ports for the two functions (Receiver command RxD and DGPS RxD input) so it
>> does not matter what you do with the RTCM port, pin 5 on UT+ connector and
>> pin 8 on the M12+/M12M connector, if not in use with an M12x receiver."
>>
>> "The SSR boards, however, had to combine the two serial data streams
>> expected by the M12x navigation receivers into one because the u-Blox
>> receiver modules only use one serial input port for both receiver commands
>> and DGPS correction data. The Synergy Adaptor Boards use a simple gate
>> combiner circuit that worked well when using the M12+ or M12M but left
>> Synergy open to this problem when using an SSR. Both serial lines on the
>> SSR board, pins 2 (Receiver RxD) and 8 (DGPS RxD) are pulled high on the
>> SSR board so open pins are OK but they must not be grounded."
>>
>> "The solution is for Synergy to make a UT+ Adaptor Board part number
>> available to users who only want to test the features of SSR timing
>> receivers."
>>
>> That new SSR only Adaptor Board part number, which we'll have available
>> in a few days, will remove R3 (4.7K) and R4 (6.8K) from the adapter board
>> and the compatibility issue will be resolved. In the interim, other users
>> can pull pin 5 of the UT+ connector high (+5V) as you did.
>>
>> We apologize for the confusion and frustration, Bob, and thank you for
>> the valuable feedback!
>>
>> Art Sepin
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