Re: [time-nuts] T-Bolt Temperature

On Wed, 22 Aug 2012 20:55:07 -0700, Hal Murray wrote: >> I don't know how to search the Time-Nut archive for specific >> information. > > From the headers that are normally not displayed by most mail systems: > List-archive: > > Google also works nicel

Re: [time-nuts] T-Bolt Temperature

--Original Message- > From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On > Behalf Of Hal Murray > Sent: Wednesday, August 22, 2012 8:55 PM > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] T-Bolt Temperature > > > I don

Re: [time-nuts] T-Bolt Temperature

Hi again: Okay. Thanks! Ron -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Hal Murray Sent: Wednesday, August 22, 2012 8:55 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] T-Bolt Temperature >

Re: [time-nuts] T-Bolt Temperature

> I don't know how to search the Time-Nut archive for specific information. >From the headers that are normally not displayed by most mail systems: List-archive: Google also works nicely. -- These are my opinions. I hate spam. _

Re: [time-nuts] T-Bolt Temperature

cussion of precise time and frequency measurement Subject: Re: [time-nuts] T-Bolt Temperature Yes, ambient/board temperature, not the OCXO oven temperature. On Wed, Aug 22, 2012 at 8:12 PM, Arthur Dent wrote: > >Hi: > >What is the temp chip reading? Is it reading the oven temperature

Re: [time-nuts] T-Bolt Temperature

-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Azelio Boriani Sent: Friday, August 17, 2012 7:57 AM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] T-Bolt Temperature No, IIRC the problem is indeed with the chip because the new silicon

Re: [time-nuts] T-Bolt Temperature

Yes, ambient/board temperature, not the OCXO oven temperature. On Wed, Aug 22, 2012 at 8:12 PM, Arthur Dent wrote: > >Hi: > >What is the temp chip reading? Is it reading the oven temperature or just > >the ambient temperature? > >Ron > > > > The DS1620 thermometer chip is in the corner of the pc

[time-nuts] T-Bolt Temperature

>Hi: >What is the temp chip reading? Is it reading the oven temperature or just >the ambient temperature? >Ron > The DS1620 thermometer chip is in the corner of the pc board next to the RS232 connector and diagonally opposite the OXCO so it reads ambient temperature. -Arthur ___

Re: [time-nuts] T-Bolt Temperature

time and frequency measurement Subject: Re: [time-nuts] T-Bolt Temperature No, IIRC the problem is indeed with the chip because the new silicon release has no higher resolution temperature reading. The old chip allows this reading via an unofficial feature that the new chip has no longer. The TBolt

Re: [time-nuts] T-Bolt Temperature

On Thu, 16 Aug 2012 20:38:42 -0500, Michael Blazer wrote: > Do you know the part number of a chip to replace the DS1620? > > Mike > Afaik this number on the eB.. site is a "working good one " a C2 : 140376728803 Sold by same guy with the 26Mhz ocxo's CFO - Denmark __

Re: [time-nuts] T-Bolt Temperature

No, IIRC the problem is indeed with the chip because the new silicon release has no higher resolution temperature reading. The old chip allows this reading via an unofficial feature that the new chip has no longer. The TBolt firmware exploits this unofficial (but documented and known) method of rea

Re: [time-nuts] T-Bolt Temperature

It would be a worthy hack (in the classic sense) to extract the Tbolt firmware and patch it to work with the current temperature chips. -- Björn > Hi > > Just in case this inadvertently heads of in the wrong direction…. > > Lady Heather displays exactly what the TBolt firmware comes up with

Re: [time-nuts] T-Bolt Temperature

Hi Just in case this inadvertently heads of in the wrong direction…. Lady Heather displays exactly what the TBolt firmware comes up with. The disconnect with the new sensor chip is between the TBolt firmware and the chip it's self. Bob On Aug 16, 2012, at 10:37 PM, Arthur Dent wrote: >> Do

[time-nuts] T-Bolt Temperature

>Do you know the part number of a chip to replace the DS1620? The part number is the same, DS1620. What is important is the revision of the DS1620. When Dallas Semiconductor/Maxim 'improved' the chip and went from REV-D (or D2) to REV-E they made a change in the way the data was sent to the outs

Re: [time-nuts] T-Bolt Temperature

Do you know the part number of a chip to replace the DS1620? Mike On 8/16/2012 5:58 AM, Arthur Dent wrote: I have two Thunderbolts that I'm monitoring with Lady Heather. The temperature on the older unit (MFG 2/26/2004) seems to track the environment. The newer one (MFG 11-24-2004) shows 44.7

[time-nuts] T-Bolt Temperature

>I have two Thunderbolts that I'm monitoring with >Lady Heather.  The temperature on the older unit >(MFG 2/26/2004) seems to track the >environment.  The newer one (MFG 11-24-2004) >shows 44.75 °C and only changes in increments of exactly 1°. All REV-E Thunderbolts with date codes after a

Re: [time-nuts] T-Bolt Temperature

I have two Thunderbolts that I'm monitoring with Lady Heather. The temperature on the older unit (MFG 2/26/2004) seems to track the environment. The newer one (MFG 11-24-2004) shows 44.75 °C and only changes in increments of exactly 1°. Sounds like the newer one has the newer tempera

[time-nuts] T-Bolt Temperature

I have two Thunderbolts that I'm monitoring with Lady Heather. The temperature on the older unit (MFG 2/26/2004) seems to track the environment. The newer one (MFG 11-24-2004) shows 44.75 °C and only changes in increments of exactly 1°. The DAC Voltage and frequency seem to be tracking s