> Message: 2 > Date: Thu, 20 Nov 2008 15:36:48 -0800 > From: Brooke Clarke <[EMAIL PROTECTED]> > Subject: Re: [time-nuts] TBolt in the house! > To: Discussion of precise time and frequency measurement > <[email protected]> > Message-ID: <[EMAIL PROTECTED]> > 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" <[EMAIL PROTECTED]> > Subject: Re: [time-nuts] TBolt in the house! > To: "Discussion of precise time and frequency measurement" > <[email protected]> > Message-ID: <[EMAIL PROTECTED]> > 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: [EMAIL PROTECTED] [mailto:time-nuts- >> [EMAIL PROTECTED] >> Behalf Of Richard Moore >> Sent: Thursday, November 20, 2008 3:28 PM >> To: [email protected] >> 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? _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
