On Thu, 19 Jul 2018 21:56:49 -0700, Robert Baer <robertbaer@localnet.com> wrote:>John Larkin wrote: >> On Wed, 18 Jul 2018 13:57:06 -0700, Bill Martin <wwm@wwmartin.net> >> wrote: >> >>> On 07/12/2018 12:50 PM, bitrex wrote: >>>> On 07/12/2018 02:13 PM, amdx wrote: >>>>> On 7/12/2018 1:03 PM, bitrex wrote: >>>>>> On 07/11/2018 06:30 PM, amdx wrote: >>>>>>> I ordered a built 74AC14 TDR square wave generator. >>>>>>> It has overshoot and ringing, 2 or 3 cycles. >>>>>>> Is there any way to tame it with out increasing rise time? >>>>>>> I added a 33pf across scope side input, it helped but increased >>>>>>> rise time. >>>>>>> Before and after pictures, > >>>>>>> https://www.dropbox.com/s/t5y0jfrmbxaqs0o/risetime.png?dl=0 >>>>>>> >>>>>>> >>>>>>> Not sure it matters, I would just like a nice rising edge to start >>>>>>> with. >>>>>>> >>>>>>> >>>>>>> >>>>>>> Here's the TDR unit I bought, click through pictures to see layout >>>>>>> of connectors. >>>>>>>> https://www.ebay.com/itm/152587007700 >>>>>>> Mikek >>>>>>> >>>>>> >>>>>> Does "No quibble returns" mean you can return it for any reason and >>>>>> they won't quibble or they won't accept returns based on "quibbles"? >>>>> >>>>> I'm have no desire to send it back, it works. >>>>> What do you want it to do? >>>>> Mikek >>>>> >>>> >>>> idk the phrasing is just a bit ambiguous. Note to self when selling >>>> things make return policy unambiguous and clear for even >>>> English-speakers with limited skill (unless one likes losing customers.) >>> >>> Haha! English is ambiguous by nature, it seems. Saw this adv on TV >>> recently "Huge Car Parking Lot Sale". How many ways can you parse that? >>> :-) Sometimes seems that no one spell & grammer checks scrolling news >>> lines either. Ugh. >> >> English is wonderful. We have maybe as many as a million words, and >> most of them have multiple meanings. Like "fence" maybe. >> >> I do see tons of grammar and spelling errors online, even from >> big-name news sites. Print pubs are still pretty good. >> >> > ..."tons"....???"Tons" has multiple meanings. -- John Larkin Highland Technology, Inc lunatic fringe electronics
74AC14 TDR
Started by ●July 11, 2018
Reply by ●July 20, 20182018-07-20
Reply by ●July 20, 20182018-07-20
On 2018-07-20, Robert Baer <robertbaer@localnet.com> wrote:> John Larkin wrote:>> English is wonderful. We have maybe as many as a million words, and >> most of them have multiple meanings. Like "fence" maybe. >> >> I do see tons of grammar and spelling errors online, even from >> big-name news sites. Print pubs are still pretty good. >> >> > ..."tons"....???lots https://en.oxforddictionaries.com/definition/ton noun definition 3 -- ت
