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)
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.
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.
@@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.
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
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.
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
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)
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.
These videos are pure knowledge, thank you for making so many of them.
What kind of software do you use to make the graphics ?
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.
@@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.
Nice video! Could anyone provide the link for the "Understanding SCPI" video mentioned at 0:16?
I'm still working on it :) I'm hoping to have it done in the next couple of weeks, so please stay tuned!
thank you.
Thanks for watching!
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
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.
Could you please add the link for "Understanding SCPI"
I’m still working on it :). It should be posted in a few weeks or so.
Asha Lodge