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.
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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____
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*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. ____
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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.
____
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dickburk@...
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