# ilumr Q&A **URL:** https://resonint.discourse.group/c/support/9.md [Latest](https://resonint.discourse.group/latest.md) · [Categories](https://resonint.discourse.group/categories.md) · [Tags](https://resonint.discourse.group/tags.md) --- ## [About the ilumr Q&A category](https://resonint.discourse.group/t/about-the-ilumr-q-a-category/26)
**Author:** [@Sharon\_McTaggart](https://resonint.discourse.group/u/Sharon_McTaggart)\ **Replies:** 0\ **Last updated:** [May 3, 2023, 10:31pm UTC](https://resonint.discourse.group/t/about-the-ilumr-q-a-category/26 "2023-05-03T22:31:30Z")
Ask and answer questions about using ilumr. Unsure of how to set something up, encountering an error, or can’t quite get something running the way you want it to? This category is a place to ask questions and discuss so… --- ## [Importing custom python modules into pulse sequences](https://resonint.discourse.group/t/importing-custom-python-modules-into-pulse-sequences/69)
**Author:** [@Aaron\_Oliver-Taylor](https://resonint.discourse.group/u/Aaron_Oliver-Taylor)\ **Replies:** 2\ **Last updated:** [June 10, 2026, 11:33am UTC](https://resonint.discourse.group/t/importing-custom-python-modules-into-pulse-sequences/69 "2026-06-10T11:33:52Z")
Hi Resonint Team, I’ve been getting into making some pulse sequences recently. One thing I thought would be helpful is to make a helper library of gradient shapes (attached) - ramp, trapezoid, triangle, sinusoid. The i… --- ## [Frequency stability specification](https://resonint.discourse.group/t/frequency-stability-specification/67)
**Author:** [@Aaron\_Oliver-Taylor](https://resonint.discourse.group/u/Aaron_Oliver-Taylor)\ **Replies:** 2\ **Last updated:** [April 27, 2026, 7:48pm UTC](https://resonint.discourse.group/t/frequency-stability-specification/67 "2026-04-27T19:48:36Z")
Hi Guys, What would you say the frequency stability of the Ilumr should be? I’m getting shifts of around 100Hz every 5 minutes, is this normal? Cheers, Aaron --- ## [How to make an experiment class with a custom pulse sequence?](https://resonint.discourse.group/t/how-to-make-an-experiment-class-with-a-custom-pulse-sequence/66)
**Author:** [@Aaron\_Oliver-Taylor](https://resonint.discourse.group/u/Aaron_Oliver-Taylor)\ **Replies:** 2\ **Last updated:** [December 11, 2025, 10:26am UTC](https://resonint.discourse.group/t/how-to-make-an-experiment-class-with-a-custom-pulse-sequence/66 "2025-12-11T10:26:19Z")
Hi Resonint Team, I’m trying to make an experiment class using a custom pulse sequence (nothing special, just a PGSE-CPMG). I’ve used what’s in ilumr-courseware/courses/MRI Fundamentals/Lab 1/Lab 1 Intro to NMR.ipynb a… --- ## [How is the RF amplitude defined?](https://resonint.discourse.group/t/how-is-the-rf-amplitude-defined/64)
**Author:** [@Christina](https://resonint.discourse.group/u/Christina)\ **Replies:** 2\ **Last updated:** [October 3, 2025, 7:22pm UTC](https://resonint.discourse.group/t/how-is-the-rf-amplitude-defined/64 "2025-10-03T19:22:30Z")
Hey there, How is the RF amplitude defined within the jupyter notebooks? It appears to be in arbitrary units, for example, in the RARE sequence’s 180° block pulse, the amplitude is set to “1”, which I back-calculated to… --- ## [Maximum RF amplitude](https://resonint.discourse.group/t/maximum-rf-amplitude/65)
**Author:** [@Christina](https://resonint.discourse.group/u/Christina)\ **Replies:** 1\ **Last updated:** [July 31, 2025, 2:37am UTC](https://resonint.discourse.group/t/maximum-rf-amplitude/65 "2025-07-31T02:37:53Z")
Hi, What is the maximum available RF amplitude? Thanks, Christina --- ## [Ilumr RF Amplifier Duty Cycle](https://resonint.discourse.group/t/ilumr-rf-amplifier-duty-cycle/63)
**Author:** [@Aaron\_Oliver-Taylor](https://resonint.discourse.group/u/Aaron_Oliver-Taylor)\ **Replies:** 1\ **Last updated:** [July 17, 2025, 11:34pm UTC](https://resonint.discourse.group/t/ilumr-rf-amplifier-duty-cycle/63 "2025-07-17T23:34:58Z")
Hi Resonint Team What is the duty cycle on the Ilumr’s RF amplifier? Can it do CW? Cheers, Aaron --- ## [Getting signal averages in 'raw' data](https://resonint.discourse.group/t/getting-signal-averages-in-raw-data/62)
**Author:** [@Shaihan\_Malik](https://resonint.discourse.group/u/Shaihan_Malik)\ **Replies:** 2\ **Last updated:** [July 15, 2025, 5:26am UTC](https://resonint.discourse.group/t/getting-signal-averages-in-raw-data/62 "2025-07-15T05:26:22Z")
Hi I have been using the simple ‘save’ option with the sequence widgets on the UI, in order to get k-space data in .npy format. This works well, but I noticed that when doing multiple signal averages, the saved data alw… --- ## [PGSE-CPMG Sequence](https://resonint.discourse.group/t/pgse-cpmg-sequence/60)
**Author:** [@Aaron\_Oliver-Taylor](https://resonint.discourse.group/u/Aaron_Oliver-Taylor)\ **Replies:** 3\ **Last updated:** [June 19, 2025, 3:09am UTC](https://resonint.discourse.group/t/pgse-cpmg-sequence/60 "2025-06-19T03:09:26Z")
Hey Resonint Team, Do you happen to have a PGSE-CPMG sequence that you can share for combined diffusion and T2 (no imaging)? Cheers, Aaron --- ## [Downloading Data from Dashboards](https://resonint.discourse.group/t/downloading-data-from-dashboards/58)
**Author:** [@Sharon\_McTaggart](https://resonint.discourse.group/u/Sharon_McTaggart)\ **Replies:** 0\ **Last updated:** [March 30, 2025, 11:31pm UTC](https://resonint.discourse.group/t/downloading-data-from-dashboards/58 "2025-03-30T23:31:12Z")
After running an experiment dashboard, you can save and download your data for offline processing: Enter a workspace name and file name. Click the blue “Save” button. This will create a .npy file with your raw k-space … --- ## [FID Dashboard - absolute value](https://resonint.discourse.group/t/fid-dashboard-absolute-value/48)
**Author:** [@LiadIlumr](https://resonint.discourse.group/u/LiadIlumr)\ **Replies:** 2\ **Last updated:** [September 1, 2024, 11:26pm UTC](https://resonint.discourse.group/t/fid-dashboard-absolute-value/48 "2024-09-01T23:26:39Z")
Hi, In the current FID dashboard, we get two decay curves (real and imaginary). Where can I find a dashboard that plots the absolute value of the FID to sample several points along the decay and calculate the decay rate…