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The Tektronix 7514 is a 90 MHz split-screen bistable storage scope. It take | {{Oscilloscope Sidebar | ||
|manufacturer=Tektronix | |||
|series=7000-series scopes | |||
|model=7514 | |||
|image=7514_Front.jpg | |||
|caption=Tektronix 7514 | |||
|introduced=1971 | |||
|discontinued=1974 | |||
|summary=90 MHz storage mainframe | |||
|manuals= | |||
*[[Media:070-1030-00.pdf|Tektronix 7514 Instruction Manual]] | |||
}} | |||
The '''Tektronix 7514''' is a 90 MHz split-screen bistable [[CRT storage scope]]. | |||
It can take four [[7000-series plug-ins]], two for vertical and two for horizontal. It is fitted with a [[7000-series remote control connector|remote control connector]]. | |||
[[ | {{MissingSpecs}} | ||
The non-stored writing speed is 450 cm/sec. | |||
The stored writing speed is 1 cm/sec. | |||
==Background== | |||
Regarding the 7514, Ron Barrett WB7PMP says: | |||
<blockquote> | |||
I used to work at Tek and took the opportunity to purchase a 7514 from Tek Surplus in 1978. | |||
I have used it on and off over the years and it has never quit. | |||
The 7514 was the pinnacle of the original generation 7000 series. | |||
As I found out from its project manager and my division engineering manager at the time it pushed design to the limit in two areas. | |||
The basic electrical and mechanical design was based on the 7504 which is a real boat-anchor. | |||
In order to supply the additional power for storage and to reduce weight, | |||
one of the first switching power supplies to appear in test and measurement equipment was designed. | |||
This was a nontrivial achievement in the late 60's. | |||
The resulting design with some modifications was used for all subsequent 7000 series mainframes. | |||
When combined with the goal to not degrade 7504 on-screen performance, | |||
elevated storage with split-screen capabilities and every storage function imagined at the time | |||
made electrical design difficult and CRT design nearly impossible. | |||
Lesson learned: future generations of Tek CRT storage did not try to serve all needs. | |||
So the 7514 is somewhat unique, was very expensive and had a relatively short life in production | |||
as Tek rushed to introduce second generation products which were cheaper to produce. | |||
No more gold circuit boards like those used in the 7514. | |||
There have been a few of these pop up on E-bay but none have approached the condition of this one. | |||
I completely calibrated it several years ago and checked it out just prior to listing. | |||
As you can see from the photos, storage works fine and non-store rise time is about 3ns with very clean transient response. | |||
Measured bandwidth was 108 MHz and would be more if the spec. on aberrations was pushed to the limit. | |||
Spot size, trace noise and writing rate are what one would expect. | |||
</blockquote> | |||
==Internals== | |||
The inverter control circuit in the 7514's switch-mode power supply is made of discrete components. | |||
It does not use the [[155-0067-02]] inverter control IC that is featured in most 7000-series mainframes. | |||
Depending on serial number, it uses a [[154-0622-00]] or [[154-0622-02]] CRT. | |||
==Links== | |||
* [http://www.barrytech.com/tektronix/tek7000/tek7514.html Tek 7514 page @ barrytech.com] | |||
==Pictures== | |||
<gallery> | |||
Tek 7514 1.jpg | |||
Tek 7514 3.jpg | |||
Tek 7514 4.jpg | |||
Tek 7514 5.jpg | |||
Tek 7514 6.jpg | |||
Tek 7514 7.jpg | |||
Tek 7514 8.jpg | |||
Tek 7514 9.jpg | |||
Tek 7514 2.jpg|Spare boards from a 7504 also work in the 7514 | |||
Tek7514.jpg | 7514 | |||
7514_Front.jpg | 7514 Front | |||
Tek 7514 five div square.jpg | |||
</gallery> | |||
{{CRTs|7514}} | |||
{{Custom ICs|7514}} | |||
{{Custom ICs|7000 series readout system}} | |||
[[Category:7000 series storage mainframes]] | |||