| Electronics > Beginners |
| Modern oscilloscope views: YT, XY but where is XYZ ? |
| (1/6) > >> |
| Ivan7enych:
Hello to all, Stupid question, years ago I had an old analog oscilloscope, it had not only 2 usual modes "Y versus Time" and "Y versus X", but also had Z input, where I can put any signal to change electron beam intensity and thus vary trace brightness. As a result I could for example make an simple analog TV from oscilloscope, putting AV signal to Z input and horizontal + vertical raster signals to usual 2 X Y channels. Nowadays I see no modern 4 channel oscilloscope with this feature. :-// Oscilloscope makers could for example make a feature, to put 1 and 2 channel to X and Y, then 3rd channel to brightness, (and 4th channel to color of the trace). May be there's no practical engineering application, but this could be a big fun to play with. |
| Brumby:
I have an old Hitachi V-152B with that. It was an easy way to add a third channel of information - albeit of a very limited nature. In my experience, the practical opportunities for it to be useful were extremely infrequent and for those moments when you wanted more than two channels - it was somewhat inadequate. This is using a scope as a scope - not a TV. These days, with the price of modern scopes starting so low, you can get a 4 channel unit and get full detail on not only a 3rd, but a 4th channel as well. IMO, the Z-input has little value in any scope. I know I don't even look for it on scope spec sheets. |
| macboy:
--- Quote from: Brumby on May 31, 2017, 03:11:34 pm ---...IMO, the Z-input has little value in any scope. I know I don't even look for it on scope spec sheets. --- End quote --- The people over in this thread will disagree. ;) |
| Brumby:
Yes.... well...... |
| w2aew:
The current Tek DPO5000, 7000 and 70000 series scopes all have XYZ mode, although these are performance scopes geared towards the professionals. Even the older TDS3000 series has XYZ. |
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