Author Topic: RTA4000 series (RTA4004) Cursor issue  (Read 230 times)

0 Members and 1 Guest are viewing this topic.

Offline Donald376Topic starter

  • Newbie
  • Posts: 1
  • Country: au
RTA4000 series (RTA4004) Cursor issue
« on: October 11, 2024, 04:18:42 am »
We bought an RTA4004 some time ago and have the latest firmware in it and reported a problem with the use of cursors.  R and S agreed that it was an issue and promised a firmware update but that was a couple of years ago and no updates since then.  I was wondering how others manage to use the scope without this being a problem.

Here is the issue.  As an example I took a sample at 200ms / division and 8.33MSa/s on a single trace. I opened a zoomed window and zoomed into 1ms/ division.  Then if I use cursors set to vertical mode the cursors skip straight across the zoomed area - so the cursors can not be used in the zoomed area.  Sometimes you can get a cursor to appear in the zoomed area but each click of the rotary know jumps it back out of the zoomed area.  It is not that the zoomed area is small compared to the sample rate. 1ms has 8330 samples so no issue with time resolution.  Normally when the cursors gets to the zoomed area the movement is re scaled to move smoothely through the zoomed area but it seems if you have long sweep times the smallest increment for the cursor is too big.

I made a video of it here https://drive.google.com/file/d/1td03Oxqv0ewVbjLqrX72WyYuXFH5ydiP/view?usp=sharing.  I aint no Youtuber.

Do other RTA4000 users see this issue?  It seems that zooming in and measuring some time with cursors is a very fundamental activity - are people doing this a different way that is not an issue?
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf