You are correct. I have a 175A and it does indeed weigh a ton. Plug-Ins are hard to find.?
My favorite member of the 140 family is the 143 because of its 8x10 inch CRT. I have one for sale but shipping will be a bitch¡ªgetting it to a buyer in one piece will be challenging.?
On Mon, Dec 3, 2018 at 9:29 PM 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 - <>
>? ? ?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
Jeremy Nichols