Regarding the "thick traces" you maybe want to test the HighRes mode or use the average mode.
Yes, thanks for that. I had a look at those modes tonight as well as the persistence and intensity options and can now appreciate the difference these make.
Incidentally, I ran into another rather curious problem tonight.
First let me mention that Dave discussed Ultrascope in his video and although he did not seem to like it much, I wanted to try it out so I installed it. Dave complained that the horizontal adjustments do not follow the usual 1:2:5 pattern which is true, but I found that it is possible to enter a value directly into the box and set it - one does not have to mess about with the vernier. It was also mentioned in the overview that the button to set the trigger to 50% is missing on the DS1054Z, it is present in the software although I'm not convinced that it works properly. It was while having a look around at this I discovered an odd problem.
Using Ultrascope, I added a measurement from the left hand side and later went to delete it using the oscilloscope panel using Measure->Clear->Item1. I hit the button to delete. The measurement momentarily disappeared and I got the word 'Recover' followed by the measurement re-appearing! I also tried Measure->Clear->All items and tried setting Measure->Statistic to Off, but it also automatically comes back on again. On the features overview video I linked earlier, I saw Dave show these controls and the statistic could be turned off with no problem, so what was I missing?
Well it turns out that the software was re-instating them automatically. The measurements first have to be turned off via the software, but this only removes them from the PC software window. They then have to be turned off again via the oscilloscope panel as normal, whereupon their status is set to recover. As soon as you add any other measurement - whether from the software or the scope - the new measurement and all previous ones re-appear, although you then have to press 'recover' to activate them. I find this behavior puzzling to say the least.