Oscilloscope camera

Chan Tran

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I saw a number of oscilloscope polaroid camera. I wonder how the camera and scope sync with each other? I can't find any info from Tektronix which I knew used to sell those cameras.
 

DWThomas

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I don't think they do. I used a few "back in the day." In later scope technology they would be used on storage scopes where a trace was maintained on the screen for a period of time by electronic magic. The other approach was to use a slow shutter and trigger a trace while the shutter was open.

And besides, the more tries it took, the more film Polaroid sold!
 
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AgX

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There is no need for synchronisation:
the phosphorescent coating of the "screen" maintained an image during beam passes and there was complete covering of the image area (in contrast to the two-pass principle at tv-screens).
 

DWThomas

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AgX said:
There is no need for synchronisation:
the phosphorescent coating of the "screen" maintained an image during beam passes and there was complete covering of the image area (in contrast to the two-pass principle at tv-screens).
Click to expand...

Well in times of yore we were occasionally producing single events and using a triggered sweep on the scope, which can be a bit challenging depending on the specifics (I worked for an exceedingly cheap employer. ) I fondly remember doing some oscilloscope shots with my boss's late 1950s folding Polaroid, model unremembered, using a rolled up cardboard shroud and a closeup lens. A tricky mess, but with enough tries we got useful info.
 

AgX

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Maybe you are referring to single-signal images, whereas I was thinking of periodic signals.
 

paul ron

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when i used my techtronics camera i shot at a slow shutter so i can get a couple traces so id have a compete event recorded.
 
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