Understanding GPIB

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Rohde Schwarz

Rohde Schwarz

Күн бұрын

Пікірлер: 15
@chitol1
@chitol1 6 ай бұрын
This is a great video. I can't believe that you guys are making a video on GPIB after it has been around for more than 30 years
@pauldenisowski
@pauldenisowski 6 ай бұрын
Thanks! GPIB is still an important technology - many of our customers still use GPIB and even our newest instruments have GPIB as an option. And a knowledge of GPIB is helpful for understanding SCPI (which I'm covering in an upcoming video)
@xDevscom_EE
@xDevscom_EE 4 ай бұрын
GPIB is excellent interface for low speed communications even today as it does not require additional hardware to daisy-chain many instruments together, unlike LAN/USB/Serial. It's also widely supported by industry and easy to work with after you setup the GPIB host/controller properly.
@Floyd..B
@Floyd..B 6 ай бұрын
These videos are pure knowledge, thank you for making so many of them. What kind of software do you use to make the graphics ?
@pauldenisowski
@pauldenisowski 6 ай бұрын
Thanks for the kind feedback! Since the presentations are animated PowerPoint, I make most of the simple graphics directly within PowerPoint -- I think many people underestimate just how flexible the PowerPoint drawing tools are. For more complicated things, I use Adobe Illustrator, and most of the measurement results (traces) are exported MATLAB plots of saved measurements I've made.
@Floyd..B
@Floyd..B 6 ай бұрын
​@@pauldenisowski Thank you, I'm using Inkscape for the moment (still learning to do vector graphics). I will try the PowerPoint drawing tools more extensively next time I use them.
@fly_raptor_1014
@fly_raptor_1014 6 ай бұрын
Nice video! Could anyone provide the link for the "Understanding SCPI" video mentioned at 0:16?
@pauldenisowski
@pauldenisowski 6 ай бұрын
I'm still working on it :) I'm hoping to have it done in the next couple of weeks, so please stay tuned!
@pragadeeshwaranuk2050
@pragadeeshwaranuk2050 5 ай бұрын
Could you please add the link for "Understanding SCPI"
@pauldenisowski
@pauldenisowski 5 ай бұрын
I’m still working on it :). It should be posted in a few weeks or so.
@jesperbjorklund4713
@jesperbjorklund4713 5 ай бұрын
13:05 Why do the NRFD and NDAC lines only become un-asserted after all listeners have un-asserted it? Does un-asserted = logical 0 in this exampel? How would the talker determine that all devices have un-asserted if the voltage on the line equals high as soon as the first listener un-asserts? Then there would be no difference between all un-asserted and only one un-asserted
@pauldenisowski
@pauldenisowski 5 ай бұрын
That’s a great question. GPIB implements NRFD and NDAC using what’s called a “wired or” concept in which the lines are driven with open collectors. A line is low (true) when any single device pulls it low, even if other devices on the line are trying to pull it high.
@technical5880
@technical5880 6 ай бұрын
thank you.
@pauldenisowski
@pauldenisowski 6 ай бұрын
Thanks for watching!
@JaneMcNeilly-p9k
@JaneMcNeilly-p9k 3 ай бұрын
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