[time-nuts] CW12-TIM

Ed Palmer ed_palmer at sasktel.net
Sun Mar 25 00:01:09 UTC 2012


That's the same place I got mine.  They made the same mistake, but 
helped me get the Motorola firmware.  The CW-12 is also available from 
Janus Remote Communications (Navsync and Janus are part of 
Connor-Winfield).  They have two warnings on the CW-12 page about the 
Motorola firmware.

As for the variable frequency output, it's only variable with the NMEA 
load.  Whoever paid Navsync to create the Motorola firmware apparently 
wasn't interested in the variable frequency output so there's no command 
to change the frequency.  It's fixed at 10 MHz.  So you can have 
variable frequency, or you can have a Motorola-compatible timing 
receiver with TRAIM.  Sigh.

Connor-Winfield provided me with the firmware, but asked me not to post 
the link.  I'll send it off-list.

Ed


On 3/24/2012 3:07 PM, Tom Knox wrote:
> Thanks Ed, You may have saved me a headache. The only place I found the CW12-TIM was semiconductorstore.com and they did not know anything about them. I did not realize there were different firmware versions, After reading the manual, I thought it would just recognize NMEA 0183 and Motorola Binary. All thru their literature they keep claiming M12 compatible never clearly mentioning different versions. Typical. the Commsymc II manual, like most other commercial GPS manuals offers nothing useful. They do not even explain what a number of different jumpers do. I am sure one is for 5VDC or 3.3VDC I could only guess at the rest.
> I am interested in the firmware to fix the 10MHz issue in case I ever utilize the variable freq output.
> Thanks Again;
> Thomas Knox
>
>> Date: Sat, 24 Mar 2012 10:55:01 -0600
>> From: ed_palmer at sasktel.net
>> To: time-nuts at febo.com
>> Subject: Re: [time-nuts] CW12-TIM
>>
>> Thomas, where did you buy your CW-12?  AFAIK, the Motorola version of
>> the CW-12 is a 'special order' item.  You can only buy the NMEA
>> version.  If you did buy the NMEA version, ask their tech support for
>> the Motorola firmware.  They sent it to me and I flashed it with no problem.
>>
>> If you decide not to use the CW-12 in your Commsync and think you might
>> like to play with the 10 MHz output, there was an issue with the
>> frequency of that output.  Search the archives for details.  I can
>> provide the updated firmware that resolves the issue.
>>
>> Ed
>>
>>
>> On 3/23/2012 7:36 PM, Tom Knox wrote:
>>> I have already bite the bullet, After reading the manual I thought it was worth a try. It should arrive Tuesday. So next week I will post what I find.
>>> Thanks;
>>> Thomas Knox
>>>
>>>> Date: Fri, 23 Mar 2012 19:17:06 -0600
>>>> From: ed_palmer at sasktel.net
>>>> To: time-nuts at febo.com
>>>> Subject: Re: [time-nuts] CW12-TIM
>>>>
>>>> Sorry Thomas.  I don't know a thing about the Commsync II.  See what you
>>>> can dig out of the manuals.  Ultimately, you might have to bite the
>>>> bullet and buy a CW12 to try it.  Sometimes that's the only way to find out.
>>>>
>>>> Ed
>>>>
>>>>
>>>> On 3/23/2012 6:10 PM, Tom Knox wrote:
>>>>> Thanks Ed, My Commsync has the LPN clean up oscillator option do you think that will clean up the sawtooth?
>>>>>
>>>>> Thomas Knox
>>>>>
>>>>>> Date: Fri, 23 Mar 2012 16:56:50 -0600
>>>>>> From: ed_palmer at sasktel.net
>>>>>> To: time-nuts at febo.com
>>>>>> Subject: Re: [time-nuts] CW12-TIM
>>>>>>
>>>>>> Yes, the CW12-TIM was designed as a drop-in replacement for the M12+.
>>>>>> Search the archives and you'll find out more about it.  One thing to
>>>>>> note is that the CW12-TIM doesn't support sawtooth correction so the 1
>>>>>> PPS may or may not be an improvement over the M12+.
>>>>>>
>>>>>> Ed
>>>>>>
>>>>>> On 3/23/2012 3:16 PM, Tom Knox wrote:
>>>>>>> Hi Group;
>>>>>>> Has anyone played with the CW12-TIM? I am hoping it is a plug and play replacement for the M12+ in my Commsync II with better performance.
>>>>>>> Is there any other product I should look at?
>>>>>>> Thanks;
>>>>>>>
>>>>>>> Thomas Knox



More information about the time-nuts mailing list