[time-nuts] TBolt in the house!

[Brooke Clarke]

Hi Dick:

Not only the port number but also the serial parameters, see:
http://www.prc68.com/I/ThunderBolt.shtml#TBM
That's why I gave you the right click hint.


Have Fun,

Brooke Clarke
http://www.prc68.com

Richard Moore wrote:
>> Message: 2
>> Date: Thu, 20 Nov 2008 15:36:48 -0800
>> From: Brooke Clarke <brooke at pacific.net>
>> Subject: Re: [time-nuts] TBolt in the house!
>> To: Discussion of precise time and frequency measurement
>> 	<time-nuts at febo.com>
>> Message-ID: <4925F490.90506 at pacific.net>
>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>>
>> Hi Dick:
>>
>> Did you set the COM port number?
>> Right click with the cursor on the window.
>> http://www.prc68.com/I/ThunderBolt.shtml#TBM
>>
> 
> Yep, Brooke, I did. My ATEN 232>USB adapter looks like Com Port 6 to  
> my windows box, which regularly thinks that it is a Microsoft Ball  
> Point, whatever that is and it's a real pain to straighten that out.  
> I'd like to get rid of the MS Ball Point driver completely if I could  
> find it; any help with that appreciated.
> 
>> Richard Moore wrote:
>>> Hi, nuts -- I just got my TBolt from h-whole-bunch-of-b's-bob in
>>> China. He nicely gave me the time-nuts discount, and also included a
>>> power connector with pigtail leads. Including shipping, it was $175
>>> and it took 7 days to get here in W. Wash. You can find him and these
>>> units on eBay at:  http://stores.ebay.com/High-precision-Osc-from- 
>>> China
>>>
>>> It's date code is 3/19/05.
>>> The App Ver is 3.00  6/27/2.
>>> GPS Core is 10.02  11/14/1.
>>> ID is 96.
>>> s/n is 82331036  3/7/5.
>>>
>>> It's up and running in a top-of-bench way, and I have a few Qs:
>>> 1)  What are good params to use for the loop to get best frequency
>>> acc'y and stability?
>>> 2)  Is there a firmware upgrade you recommend?
>>> 3)  What V/Hz figure do you all recommend? It's at what must be a
>>> default of -5...
>>> 4)  DAC voltage is +0.0633...  Is this a fairly normal value?
>>> 5)  I downloaded Tboltmon v. 2.60 and it works great with my 232>USB
>>> adapter, but DSPMon does not see the data at all -- no TX or RX. Does
>>> it not work with this vintage/version of TBolt?
>>> ------------------------------
> 
> 
>> Message: 3
>> Date: Thu, 20 Nov 2008 15:44:49 -0800
>> From: "John Miles" <jmiles at pop.net>
>> Subject: Re: [time-nuts] TBolt in the house!
>> To: "Discussion of precise time and frequency measurement"
>> 	<time-nuts at febo.com>
>> Message-ID: <PKEGJHPHLLBACEOICCBJMEGEPDAB.jmiles at pop.net>
>> Content-Type: text/plain; charset="us-ascii"
>>
>> Unless you are going to use a different OCXO, there is nothing to  
>> do except
>> perhaps tell it to save the self-survey results and set your  
>> "foilage mode"
>> if desired.  They are plug and play.
>>
>> -5 V/Hz is the correct kvco parameter; any changes will either  
>> degrade the
>> phase margin and give you a "hump" in your loop response, or  
>> lengthen the
>> loop response.  And it wouldn't be advisable to alter the loop-time  
>> and
>> damping parameters without taking a series of ADEV plots under  
>> various GPS
>> reception conditions to make sure you're actually improving things.
> 
> John, thanks for the feedback. I'll leave the V/Hz alone, Any advice  
> on loop time constant and damping?
> 
>>> -----Original Message-----
>>> From: time-nuts-bounces at febo.com [mailto:time-nuts- 
>>> bounces at febo.com]On
>>> Behalf Of Richard Moore
>>> Sent: Thursday, November 20, 2008 3:28 PM
>>> To: time-nuts at febo.com
>>> Subject: [time-nuts] TBolt in the house!
>>>
>>>
>>> Hi, nuts -- I just got my TBolt from h-whole-bunch-of-b's-bob in
>>> China. He nicely gave me the time-nuts discount, and also included a
>>> power connector with pigtail leads. Including shipping, it was $175
>>> and it took 7 days to get here in W. Wash. You can find him and these
>>> units on eBay at:  http://stores.ebay.com/High-precision-Osc-from- 
>>> China
>>>
>>> It's date code is 3/19/05.
>>> The App Ver is 3.00  6/27/2.
>>> GPS Core is 10.02  11/14/1.
>>> ID is 96.
>>> s/n is 82331036  3/7/5.
>>>
>>> It's up and running in a top-of-bench way, and I have a few Qs:
>>> 1)  What are good params to use for the loop to get best frequency
>>> acc'y and stability?
>>> 2)  Is there a firmware upgrade you recommend?
>>> 3)  What V/Hz figure do you all recommend? It's at what must be a
>>> default of -5...
>>> 4)  DAC voltage is +0.0633...  Is this a fairly normal value?
>>> 5)  I downloaded Tboltmon v. 2.60 and it works great with my 232>USB
>>> adapter, but DSPMon does not see the data at all -- no TX or RX. Does
>>> it not work with this vintage/version of TBolt?
> 
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