Faster Sample Rate with J-Link Ultra+ in JScope ?

rensem · Jan 27th 2015, 1:31pm

Hi,

I connected a J-Scope via J-Link Ultra+.
How or where can I select a higher than 1kHz Sample-Rate?

J-Scope crashes if I select 15 variables and try to record them on a Windows 7 64 bit, machine.

By the way:
It is great that I can debug , use the SWO-Viewer, and J-Scope simultaneously!!

SEGGER - Niklas · Jan 27th 2015, 3:04pm

Hi Rensem,

How or where can I select a higher than 1kHz Sample-Rate?

Currently J-Scope only supports the default sample rate, which is 1kHz for all J-Links supporting HSS (J-Link EDU/Base/PLUS v9 and later; J-Link ULTRA+/PRO v4 and later) and 50 Hz for all other J-Links.
An option for 10kHz sampling may be introduced later, however, you will not be able to sample that many variables with 10kHz at the same time.

J-Scope crashes if I select 15 variables and try to record them on a Windows 7 64 bit, machine.

This will be fixed in the next version of J-Scope.

It is great that I can debug , use the SWO-Viewer, and J-Scope simultaneously!!

Thank you. We appreciate your feedback.

Best regards,
Niklas

rensem · Jan 28th 2015, 9:52am

we bought the J-Link ULTRA+ only because in
segger.com/j-link-j-scope.html is written that the J-Link ULTRA+ (V4 or later) has Unlimited Sampling Rate.

Probably that Info in that link should be corrected.

However we would appreciate if that "Unlimited" feature would become available

SEGGER - Niklas · Jan 28th 2015, 12:04pm

Hi Rensem,

The values in the table refer to the capabilities of the J-Link models.
The sampling rate is currently only limited by J-Scope and will be lifted in the feature to allow higher sampling rates with J-Link high end models.

Best regards,
Niklas

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