Limit Lines in 3.5.10

[Volker]

I had a preset with limit line for IM mesurements. After upate to 3.5.10 I found that the lines are not displayed anymore. Still I can see them in ‘Manage Limit Lines’ and they are still functional, but not displayed.

I have attached my preset and a screenshot.

Besides: very nice Intermod distortion panel

Volker

• This topic was modified 4 years, 10 months ago by Volker.

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Hi Volker,

Thanks for the bug report and feedback. We are aware of this issue and have implemented a fix for this to be released in the next version of Spike. I apologize for the inconvenience. This issue was created when we introduced the new sweep plot scaling/zoom features. As you noted, this is limited to the display only, the testing on the limit lines remains unchanged. I can get you a link to a previous version of Spike if desired, or you could wait 2-4 weeks for the next release?

I look forward to your response.

Regards,
Andrew

Hi Andrew,

thanks for the response. I still have an older version of spike and I can wait for the fixed one.

Best,

Volker

Hi Andrew,

just found the time to come back to the problem. It is much better in 3.5.11 but still not correct. Limitlines are slightly to low in frequency, but this is working.

Limitlines should be right on grid.

Best,

Volker

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Hi Andrew,

just found out that the position of the limit lines depend on the RBW. By increasing the RBW the limit lines are shifting left.

Volker

[Andrew]

Thanks Volker,

I was able to track it down. It looks like another display related issue affecting just the limit lines. As before, the limits lines are still being tested the same as they have been for awhile.

I was able to fix this display issue, and can get it in the next release.

I apologize for the inconvenience. I will likely get a release out in the next 1-2 weeks.

Regards,

[See image for your line with fix implemented. Peaks align on the graticule lines and don’t shift left at higher RBWs. Although increasing RBW too much is not recommended with your narrow limit line spikes.]

• This reply was modified 4 years, 7 months ago by Andrew.
• This reply was modified 4 years, 7 months ago by Andrew.
• This reply was modified 4 years, 7 months ago by Andrew.
• This reply was modified 4 years, 7 months ago by Andrew.

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Hi Andrew,

nothing to apologize for. Thanks for this great product and your great support.

Volker

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