Re: [time-nuts] Rohde & Schwarz GPSDO

[Björn]

You might get some oscillator information by looking at the Meinberg site.

https://www.meinbergglobal.com/english/specs/gpsopt.htm

Is this a badged Meinberg unit or a R built on the Meinberg GPScard?

--
     Björn

 Originalmeddelande Från: Tom Knox 
 Datum:2015-10-08  05:21  (GMT+01:00) 
Till: Time-Nuts  Rubrik: Re: 
[time-nuts] Rohde & Schwarz GPSDO 
What is interesting is I spent a little time on the Manufactures Web Site 
and could find no AD or PN specs.
So even if you can find the down converter antenna, you have no idea how well 
it will perform.
I imagine it has a something like an Oscilloquartz 8663. No doubt as with 
almost all RS products it will be very high build quality.
Cheers;
Thomas Knox



> From: rbenw...@verizon.net
> To: time-nuts@febo.com
> Date: Wed, 7 Oct 2015 22:41:11 -0400
> Subject: Re: [time-nuts] Rohde & Schwarz GPSDO
> 
> That's why you can run 300meters of RG-58!  This is the "missing"
> antenna/converter unit.
> 
> https://www.meinbergglobal.com/english/products/gps-antenna-converter.htm
> 
> Here is one, this time with the antenna:
> http://www.ebay.com/itm/Meinberg-ED170MP-GPS-Satellite-Disciplined-Atomic-Cl
> ock-10MHz-Oscillator-Antenna-/281560964740?hash=item418e575e84
> 
> Bob
> 
> >>> -Original Message-
> >>> From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Arthur
> >>> Dent
> >>> Sent: Wednesday, October 07, 2015 7:46 AM
> >>> To: time-nuts@febo.com
> >>> Subject: [time-nuts] Rohde & Schwarz GPSDO
> >>> 
> >>> I believe that like a lot of the Meinberg receivers that this uses a
> down
> >>> converter to give an IF frequency of
> >>> 35.4 MHz. If you don't have the converter that apparently isn't included
> with
> >>> the receiver you have a $300 paperweight.
> >>> You might want to check with the seller before bidding.
> >>> 
> >>> -Arthur
> >>> ___
> >>> time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to
> >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> >>> and follow the instructions there.
> >>> -
> >>> No virus found in this message.
> >>> Checked by AVG - www.avg.com
> >>> Version: 2015.0.6140 / Virus Database: 4435/10749 - Release Date:
> >>> 10/03/15
> 
> ___
> time-nuts mailing list -- time-nuts@febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
 
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Re: [time-nuts] Rohde & Schwarz GPSDO

[Azelio Boriani]

Forgot to mention: the GPSMON32 is free



On Thu, Oct 8, 2015 at 3:29 PM, Azelio Boriani  wrote:
> Here are 2 pictures of the 1U unit and the card.
>
> On Thu, Oct 8, 2015 at 1:05 PM, Bob Camp  wrote:
>> Hi
>>
>> One thing you can expect - some sort of issue with the GPS rollover issue.
>> Can it be fixed on this or that unit? That’s going to be highly variable 
>> model to
>> model. Not much of an issue for a frequency standard, but a pain for NTP.
>>
>> Bob
>>
>>> On Oct 7, 2015, at 11:21 PM, Tom Knox  wrote:
>>>
>>> What is interesting is I spent a little time on the Manufactures Web Site 
>>> and could find no AD or PN specs.
>>> So even if you can find the down converter antenna, you have no idea how 
>>> well it will perform.
>>> I imagine it has a something like an Oscilloquartz 8663. No doubt as with 
>>> almost all RS products it will be very high build quality.
>>> Cheers;
>>> Thomas Knox
>>>
>>>
>>>
 From: rbenw...@verizon.net
 To: time-nuts@febo.com
 Date: Wed, 7 Oct 2015 22:41:11 -0400
 Subject: Re: [time-nuts] Rohde & Schwarz GPSDO

 That's why you can run 300meters of RG-58!  This is the "missing"
 antenna/converter unit.

 https://www.meinbergglobal.com/english/products/gps-antenna-converter.htm

 Here is one, this time with the antenna:
 http://www.ebay.com/itm/Meinberg-ED170MP-GPS-Satellite-Disciplined-Atomic-Cl
 ock-10MHz-Oscillator-Antenna-/281560964740?hash=item418e575e84

 Bob

>>> -Original Message-
>>> From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Arthur
>>> Dent
>>> Sent: Wednesday, October 07, 2015 7:46 AM
>>> To: time-nuts@febo.com
>>> Subject: [time-nuts] Rohde & Schwarz GPSDO
>>>
>>> I believe that like a lot of the Meinberg receivers that this uses a
 down
>>> converter to give an IF frequency of
>>> 35.4 MHz. If you don't have the converter that apparently isn't included
 with
>>> the receiver you have a $300 paperweight.
>>> You might want to check with the seller before bidding.
>>>
>>> -Arthur
>>> ___
>>> time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to
>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>>> and follow the instructions there.
>>> -
>>> No virus found in this message.
>>> Checked by AVG - www.avg.com
>>> Version: 2015.0.6140 / Virus Database: 4435/10749 - Release Date:
>>> 10/03/15

 ___
 time-nuts mailing list -- time-nuts@febo.com
 To unsubscribe, go to 
 https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
 and follow the instructions there.
>>>
>>> ___
>>> time-nuts mailing list -- time-nuts@febo.com
>>> To unsubscribe, go to 
>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>>> and follow the instructions there.
>>
>> ___
>> time-nuts mailing list -- time-nuts@febo.com
>> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>> and follow the instructions there.
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Re: [time-nuts] Jackson Labs M12M Replacement Receiver

[Tom Knox]

In my humble opinion Jackson Labs continues to raise the bar in GPS time and 
frequency with products that are compact, reasonably price, and most of all 
offer exceptional performance. Any idea if these will plug and play in my  
FEI/Zyfer Commsync II"s
Thanks All
Thomas Knox



> Date: Wed, 7 Oct 2015 14:44:03 -0700
> From: keith.loise...@gmail.com
> To: time-nuts@febo.com
> Subject: Re: [time-nuts] Jackson Labs M12M Replacement Receiver
> 
> If you are interested in purchasing you can do so directly through our ebay
> listing here:
> http://www.ebay.com/itm/-/181896123655
> 
> But, please contact me if you have any questions.
> 
> Thanks,
> Keith
> 
> 
> 
> Keith
> 
> On Wed, Oct 7, 2015 at 7:14 AM, Keith Loiselle 
> wrote:
> 
> > Hello everyone,
> >
> >
> >
> > Since there are many Fury GPSDO users here and many other users of the
> > Motorola M12+ and M12M timing receivers, we wanted to introduce our new
> > product which is an M12M compatible timing and navigation receiver that
> > uses the latest uBlox M8T GNSS receiver, and is a one-to-one replacement
> > for the aging, and hard to use Motorola/iLotus GPS receiver.
> >
> >
> >
> > This is kind of like a super M12M, with significant improvements in the
> > 1PPS timing accuracy and stability, support for receiving two of any of the
> > standard GNSS systems at any one time (GPS with SBAS, Glonass, QZSS,
> > BeiDou, and soon Galileo), and true plug-and-play operation. It should work
> > in pretty much most Motorola M12+ and M12M binary command applications.
> >
> >
> >
> > The unit is a form-fit-function compatible replacement for the M12M/M12+
> > receivers, and has been qualified on the JLT Fury GPSDO as well as the
> > Microsemi/Symmetricom XLI, and provides a massive upgrade in GNSS
> > performance such as -167dBm tracking capability (think indoors reception
> > may now be possible under certain circumstances), 72 channels capability
> > for very fast cold-start and re-acquisition, and multi-GNSS support.
> >
> >
> >
> > It has some additional features such as:
> >
> > *   Two USB ports, one for easy SCPI control, one for full access to the
> > uBlox commands for setup, as well as Carrier Phase, Almanac, and Ephemeris
> > data. The unit can also be powered via the USB ports and used stand-alone
> > sitting on a desk etc. There is no setup required though out-of-the-box,
> > all setup is optional
> >
> > * 7-Segment LED status display and 5 additional status LEDs show GNSS
> > status, fix status, signal strength, UTC time, and number of sats tracked
> >
> > * DIP switch for easy configuration of which GNSS systems should be
> > enabled, Position Hold mode versus 3D Mobile mode, etc (these settings can
> > be over-written by USB commands)
> >
> > * 1Hz to 10MHz+ buffered Synthesized (NCO) output that is
> > frequency-locked to the GNSS system, and can be easily configured through
> > the USB ports
> >
> > * Position Hold mode with Auto Survey, or full 3D mobile mode (selectable
> > via USB, Motorola binary command, or via the DIP switch), supporting full
> > Auto Kalman setup depending on vehicle dynamics (including auto-selection
> > of Carrier Phase versus Doppler tracking etc)
> >
> > You can find out more in the User Manual and Spec Sheet available here:
> >
> >
> > http://www.jackson-labs.com/assets/uploads/main/M12M_replacement_UserManual.pdf
> >
> >
> > and
> >
> >
> >
> > http://www.jackson-labs.com/assets/uploads/main/M12M_replacement_Specsheet.pdf
> >
> > We are making this unit available to Time Nuts users for a special pricing
> > of $185 per unit plus shipping. Pricing will revert to the list price of
> > $220 at the end of this month. We are asking for anyone using the M12+ or
> > M12M receivers in other than the Fury or XLI GPSDOs to help us test
> > compatibility with those systems, and hope to have as many different
> > products as possible tested out with your help.
> >
> >
> >
> > Please contact me OFFLINE(!) if you are interested in this unit.
> >
> > Thanks,
> > Keith
> >
> ___
> time-nuts mailing list -- time-nuts@febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
  
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Re: [time-nuts] Rohde & Schwarz GPSDO

[Azelio Boriani]

Here are 2 pictures of the 1U unit and the card.

On Thu, Oct 8, 2015 at 1:05 PM, Bob Camp  wrote:
> Hi
>
> One thing you can expect - some sort of issue with the GPS rollover issue.
> Can it be fixed on this or that unit? That’s going to be highly variable 
> model to
> model. Not much of an issue for a frequency standard, but a pain for NTP.
>
> Bob
>
>> On Oct 7, 2015, at 11:21 PM, Tom Knox  wrote:
>>
>> What is interesting is I spent a little time on the Manufactures Web Site 
>> and could find no AD or PN specs.
>> So even if you can find the down converter antenna, you have no idea how 
>> well it will perform.
>> I imagine it has a something like an Oscilloquartz 8663. No doubt as with 
>> almost all RS products it will be very high build quality.
>> Cheers;
>> Thomas Knox
>>
>>
>>
>>> From: rbenw...@verizon.net
>>> To: time-nuts@febo.com
>>> Date: Wed, 7 Oct 2015 22:41:11 -0400
>>> Subject: Re: [time-nuts] Rohde & Schwarz GPSDO
>>>
>>> That's why you can run 300meters of RG-58!  This is the "missing"
>>> antenna/converter unit.
>>>
>>> https://www.meinbergglobal.com/english/products/gps-antenna-converter.htm
>>>
>>> Here is one, this time with the antenna:
>>> http://www.ebay.com/itm/Meinberg-ED170MP-GPS-Satellite-Disciplined-Atomic-Cl
>>> ock-10MHz-Oscillator-Antenna-/281560964740?hash=item418e575e84
>>>
>>> Bob
>>>
>> -Original Message-
>> From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Arthur
>> Dent
>> Sent: Wednesday, October 07, 2015 7:46 AM
>> To: time-nuts@febo.com
>> Subject: [time-nuts] Rohde & Schwarz GPSDO
>>
>> I believe that like a lot of the Meinberg receivers that this uses a
>>> down
>> converter to give an IF frequency of
>> 35.4 MHz. If you don't have the converter that apparently isn't included
>>> with
>> the receiver you have a $300 paperweight.
>> You might want to check with the seller before bidding.
>>
>> -Arthur
>> ___
>> time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to
>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>> and follow the instructions there.
>> -
>> No virus found in this message.
>> Checked by AVG - www.avg.com
>> Version: 2015.0.6140 / Virus Database: 4435/10749 - Release Date:
>> 10/03/15
>>>
>>> ___
>>> time-nuts mailing list -- time-nuts@febo.com
>>> To unsubscribe, go to 
>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>>> and follow the instructions there.
>>
>> ___
>> time-nuts mailing list -- time-nuts@febo.com
>> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>> and follow the instructions there.
>
> ___
> time-nuts mailing list -- time-nuts@febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

[time-nuts] Lucent RTFG-u DE-9 connectors

[Alexander Huemer]

Hi,

on the Lucent RTFG-u units there are two types of D-subminiature 9 pin 
connectors. The common, threaded type and some other type with a 
different kind of fastening technique I have never seen before.
Does this other type have a name? Where can I buy such connectors?
Of course I can modify the housing of the units and equip it with 
standard connectors, but I have too much respect for the construction to 
do that :)

Kind regards,
-Alex
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Re: [time-nuts] Rohde & Schwarz GPSDO

[Martin Burnicki]

Bob Camp wrote:
> Hi
> 
> One thing you can expect - some sort of issue with the GPS rollover issue. 
> Can it be fixed on this or that unit? That’s going to be highly variable 
> model to
> model. Not much of an issue for a frequency standard, but a pain for NTP.

No need to worry, there is no problem with GPS rollovers.

The built in GPS receiver has been developed by Meinberg, and I wrote
parts of the firmware which evaluates the satellite data.

Handling of the week number in these receivers is *not* by simply adding
another 1024 weeks if the truncated wn is below a certain limit.

Instead, the wn is extended to 16 bit internally and simply incremented
on each 10 bit rollover into the next epoch.

If the device's backup battery fails and thus the epoch number is lost
you can simply set the internal date to the current date, so the
extended week number is computed and the device outputs the correct date
and time.

Martin

___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Re: [time-nuts] Rohde & Schwarz GPSDO

[Hal Murray]

kb...@n1k.org said:
> One thing you can expect - some sort of issue with the GPS rollover issue.
> Can it be fixed on this or that unit? That’s going to be highly variable
> model to model. Not much of an issue for a frequency standard, but a pain
> for NTP.  

But the fix is only a few lines of code in the right place.

If anybody has a test case that needs work on ntpd, please poke me offline.



-- 
These are my opinions.  I hate spam.



___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Re: [time-nuts] Rohde & Schwarz GPSDO

[Martin Burnicki]

Björn wrote:
> You might get some oscillator information by looking at the Meinberg site.
> 
> https://www.meinbergglobal.com/english/specs/gpsopt.htm
> 
> Is this a badged Meinberg unit or a R built on the Meinberg GPScard?

This device has been manufactured by Meinberg, for R

Martin

___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

[time-nuts] Lucent RTFG-u DE-9 connectors

[Arthur Dent]

The connectors are the same but the mounting posts that
are tapped for 4-40 screws that are used on two of the
connectors are not used on the other DB type connectors
and they use a quick disconnect type of post. The mating
connector on the cable end has a piece on each side of
the connector shell that has a slotted hole on the side
of the slide that faces the RFTG and this piece slides
side to side and grabs the head of the post on the RFTG
that looks like a small round button and this locks the
cable onto the unit. On the few connectors that you would
be using I would change those small button head posts for
the threaded ones and leave the rest as they are.

I saw a lot of these quick locking connector shells on
industrial routing equipment in the 1990s and hated them.

-Arthur
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Re: [time-nuts] Lucent RTFG-u DE-9 connectors

[Bob Stewart]

Hi Alex,
It's called a slidelock.  Here's the link I posted last time this came up.  
Look at the bottom right.
http://www.mouser.com/catalogviewer/default.aspx?page=1605=706-160X10689X=en-US=647
Bob

  From: Alexander Huemer 
 To: time-nuts@febo.com 
 Sent: Thursday, October 8, 2015 3:52 PM
 Subject: [time-nuts] Lucent RTFG-u DE-9 connectors
   
Hi,

on the Lucent RTFG-u units there are two types of D-subminiature 9 pin 
connectors. The common, threaded type and some other type with a 
different kind of fastening technique I have never seen before.
Does this other type have a name? Where can I buy such connectors?
Of course I can modify the housing of the units and equip it with 
standard connectors, but I have too much respect for the construction to 
do that :)

Kind regards,
-Alex
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.


  
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.