Re: [time-nuts] T-Bolt Temperature

2012-08-17 Thread Bob Camp
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

Re: [time-nuts] T-Bolt Temperature

2012-08-17 Thread bg
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

2012-08-17 Thread Azelio Boriani
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

Re: [time-nuts] T-Bolt Temperature

2012-08-17 Thread cfo
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

[time-nuts] new member with questions NTP, PRS, GPS, ocxo

2012-08-17 Thread Frank Hughes
Hi, New guy here, seeking Oracular pronouncements for my time/frequency quest! I recently acquired an HP 3336B, and subsequently converted it to a C model, as all the HAM and related equipment here is 50 ohms. The 3336 has Option 004: High stability frequency reference.  Operates at about

Re: [time-nuts] new member with questions NTP, PRS, GPS, ocxo

2012-08-17 Thread Chris Albertson
On Fri, Aug 17, 2012 at 6:12 PM, Frank Hughes hp_cisco...@yahoo.com wrote: So what I am trying to come up with now for home/shack is: - An NTP server for our LAN - A very high quality 10Mhz source to distribute to all the HP and Agilent equipment here. Here is what I would do again,... 1)

Re: [time-nuts] new member with questions NTP, PRS, GPS, ocxo

2012-08-17 Thread Bill Dailey
On a budget get a thunderbolt... If you want plug and play get a Jackson labs Fury. I have my fury hooked up to small Ubuntu box and have a nice ntp server as well as a great reference. Also, read, read, and read some more. Doc KX0O Sent from my iPad On Aug 17, 2012, at 8:12 PM, Frank

Re: [time-nuts] new member with questions NTP, PRS, GPS, ocxo

2012-08-17 Thread Mark Spencer
Regarding the NTP server another option is to buy a stand alone NTP server that can accept a 1pps and or 10 Mhz input, and feed it the GPS or other reference of your chosing. I picked up a Datum unit from ebay which is currently fed 1pps from a Jackson Labs Fury. It also accepts 10 Mhz as

Re: [time-nuts] new member with questions NTP, PRS, GPS, ocxo

2012-08-17 Thread David J Taylor
Hi, New guy here, seeking Oracular pronouncements for my time/frequency quest! [] Anyone ever had a good buying experience for this type of equipent from China? [] So what I am trying to come up with now for home/shack is: - An NTP server for our LAN [] Advice much appreciated! 73 Frank KJ4OLL