[time-nuts] Thunderbolt PPS Modification

Here is a link to a photo of the 5V 10uS wide pulse. It is there but catching it on some scopes can be a problem because of its narrow width and low repetition rate.   http://farm5.static.flickr.com/4013/4339027385_0d9f2bc055.jpg  +++ Hal Murray: “The problem

Re: [time-nuts] Thunderbolt PPS Modification

See http;//www.ko4bb.com/Test_Equipment/Thunderbolt/PulseStreching/ Didier KO4BB Sent from my Verizon Wireless BlackBerry -Original Message- From: Arthur Dent Sender: time-nuts-boun...@febo.com Date: Sun, 26 Sep 2010 05:07:50 To: Reply-To: Discussion of precise time and frequency meas

Re: [time-nuts] DS1620 Variants in the Thunderbolt

Thanks for all the information on the DS1620. As it turns out, both of the TBolts (remember I got the from two different sellers and appear identical) have the Trimble OCXO, v3.00 firmware, but the DS1620's are marked as follows: DS1620 0415E2 531AD DS1620 0239D1 690AB Interestingly, the fi

[time-nuts] OCXO install on TS-2100?

I know a few people were toying with the notion of upgrading their Tymserve 2100's with the LPRO module, and I'm not really sure what came of that. Has anyone tried to upgrade their unit from a TCXO to an OCXO? It looks like a couple sizes will fit on the board. My only concerns before attemptin