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

Alexander Pummer alexpcs at ieee.org
Fri Jul 25 22:20:20 EDT 2014

Ulrich's Father, professor Lothar Rohde was my boss, Ulrich owns a part 
of the company , but never worked for it directly
He is President of Communications Consulting Corpor
ation; Chairman of Synergy Microwave
Corp., Paterson, New Jersey; and a partner of Rohde
& Schwarz, Munich, Germany. Previously, he was
the President of Compact Software, Inc.,

On 7/25/2014 6:50 PM, paul swed wrote:
> 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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