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Bob Albert
Yeah I have a 1727A 275 MHz 'scope I don't know what to do with.? If anyone wants to trade something for it, let me know. Bob
On Monday, December 3, 2018, 9:29:33 PM PST, Richard Knoppow <dickburk@...> wrote:
? ? The 140A and 175A came out at about the same time. Articles in the -hp- Journal were around 1963.? The 175 was a 50 Mhz scope. Weighed a ton. Not bad but I suspect not quite up to the Tek scopes of the time. Both featured the internal graticule? and acceleration mesh CRTs. I think you are right about the limit on previous models. On 12/3/2018 9:03 PM, Jeremy Nichols wrote: > Before the 140 series, HP scopes were limited to about 500 KHz. > Once they had got their feet wet, the marketing people of course > had to go looking for other opportunities. The 140 series was > limited to 20 MHz but was greatly expanded by sampling > technology, which was enabled by solid-state technology in the > 1970s, as you noted. > > > On Mon, Dec 3, 2018 at 7:36 PM Paul Bicknell > <paul@... <mailto:paul@...>> wrote: > >? ? __ > >? ? Hi ____ > >? ? what date are we talking about as in 1970 the 140 series went >? ? to 20 mhz? real time and 12 ghz sampling also available was >? ? the 183 with a real time display of 500 Mhz____ > >? ? __ __ > >? ? ----------------------------------------------------------------- > >? ? *From:*[email protected] >? ? <mailto:[email protected]>__ >? ? [mailto:[email protected] >? ? <mailto:[email protected]>__] *On >? ? Behalf Of *Jeremy Nichols >? ? *Sent:* 04 December 2018 03:15 >? ? *To:* [email protected] >? ? <mailto:[email protected]>__ >? ? *Subject:* Re: [HP-Agilent-Keysight-equipment] HP 130A____ > >? ? __ __ > >? ? Richard, you and I are meaning different things by "edge >? ? connectors." I was thinking of individual wires attached to >? ? pins or little slots at the edges of the pc boards. (Yes, >? ? "pins" aren't "edge connectors; I was being lazy.) Perhaps >? ? the 130 is too old; I've never had one apart. ____ > >? ? __ __ > >? ? HP did not want to compete with Tek in the scope field but >? ? customers kept asking and finally they decided they could get >? ? into the low frequency end of things where Tek wasn't as >? ? active. ____ > >? ? __ __ > >? ? __ __ > >? ? On Mon, Dec 3, 2018 at 6:55 PM Richard Knoppow >? ? <dickburk@... <mailto:dickburk@...>> >? ? wrote:____ > >? ? ? ? ? ? ?Well, that is my impression also. I used -hp- scopes >? ? ? ? because >? ? ? ? its what we had but always thought the triggers left >? ? ? ? something to >? ? ? ? be desired. > >? ? ? ? ____ > >? ? -- ____ > >? ? 4.____ > >? ? __ > >? ? No virus found in this message. >? ? Checked by AVG - www.avg.com <> >? ? Version: 2016.0.8048 / Virus Database: 4793/15883 - Release >? ? Date: 08/14/18 >? ? Internal Virus Database is out of date.____ > > -- > 4. > -- Richard Knoppow dickburk@... WB6KBL |
