Products > Test Equipment
True analog scopes
james_s:
--- Quote from: rf-loop on December 16, 2022, 11:22:02 am ---Also Tektronix and some others. All ( tens of) HP digital oscilloscopes what I have owned and used as I remember all have raster CRT including also 1GHz 54111D.
But Tektronix "CRT" digital scopes what I have owned and used they all have used vector CRT (as normal analog scopes) for it and it was very nice. Just for example 2440 and example 7854 (but 7854 was bit different case with 10-bit digitizer and waveform analyzing processor (with separate keyboard))
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I have several Tek DSOs, a TDS784C that has a raster CRT display, a TDS3014 that has a color LCD, and then several TDS300 and TDS400 scopes that need various things that are all mono raster CRT. I know they made an early DSO with a vector display but I don't think I've ever used one.
tggzzz:
--- Quote from: tautech on December 16, 2022, 07:36:59 pm ---
--- Quote from: rf-loop on December 16, 2022, 11:22:02 am --- All ( tens of) HP digital oscilloscopes what I have owned and used as I remember all have raster CRT including also 1GHz 54111D.
But Tektronix "CRT" digital scopes what I have owned and used they all have used vector CRT (as normal analog scopes) for it and it was very nice. Just for example 2440 and example 7854 (but 7854 was bit different case with 10-bit digitizer and waveform analyzing processor (with separate keyboard))
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With that vast experience what do you recommend for
1. The hobbyist with little or no scope experience ?
2. The young professional, say the EE student with limited resources ?
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I would recommend they use whatever is available to them.
What scope would you recommend to someone designing the world's fastest scope?
People do face that kind of decision, and using skill plus imagination is required. It is fun and beneficial to develop such an attitude, even when it isn't necessary. Looks extremely good in job interviews :)
Mechatrommer:
--- Quote from: tggzzz on December 16, 2022, 09:54:53 pm ---What scope would you recommend to someone designing the world's fastest scope?
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if i can name one, could you afford it?
BillyO:
--- Quote from: Mechatrommer on December 17, 2022, 12:30:20 am ---
--- Quote from: tggzzz on December 16, 2022, 09:54:53 pm ---What scope would you recommend to someone designing the world's fastest scope?
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if i can name one, could you afford it?
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You can easily spend the price of a really nice suburban house with acreage and a private lake on an oscilloscope you don't have the means to use. These scopes require you to design the circuit you are going to test to be testable by the scope. @100GHz (or thereabouts) the concept of nice little handheld probes with ground clips is out the window. If the device you want to test has not been specifically designed to be tested by one of these instruments, just go home and watch youtube, or jerk-off, or whatever. Most of us can't reasonably make use of a 2GHz scope .. or afford one.
jonpaul:
Bonsoir à tous
fastest Tektronix CRT 7104, 1 ghz with 7A29 plug-ins.
https://w140.com/tekwiki/index.php/7104
Tektronix made CRT, microchannel intensifier plate,distributed deflection plates,
Circa 1970s..1980s, originally for DOE, AEC,
Beautiful machines, but 50 Ohm Zo input, and very basic plug-ins.
I put a Ghz RF gen or Leonard Bodnar 40 ps pulser to see its incredible BW and transient response. Excellence for very low PRF events or single shot.But a boat anchor, dominates the lab bench, impractical for scopecart.
So, acquired a decade ago with PUins and original Tektronix service manual, sadly, from a silent key estate. It's is still working 100%, with 7A29 Vs and 7B10, 7B15 H. Used sparingly as the MCP CRT has limited life.
Bon journée
Jon
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