# \#tutorial **URL:** https://community.opal-rt.com/tag/tutorial/48.md [Latest](https://community.opal-rt.com/latest.md) · [Categories](https://community.opal-rt.com/categories.md) · [Tags](https://community.opal-rt.com/tags.md) --- ## [How to Check Which I/O Cards Are Installed in Your OPAL-RT Simulator](https://community.opal-rt.com/t/how-to-check-which-i-o-cards-are-installed-in-your-opal-rt-simulator/1010)
**Author:** [@sorfina](https://community.opal-rt.com/u/sorfina)\ **Replies:** 0\ **Last updated:** [October 16, 2026, 1:41pm UTC](https://community.opal-rt.com/t/how-to-check-which-i-o-cards-are-installed-in-your-opal-rt-simulator/1010 "2026-10-16T13:41:28Z")
How to Check Which I/O Cards Are Installed in Your OPAL-RT Simulator Why check your I/O cards? Your simulator’s I/O cards are how it talks to the outside world (analog and digital signals, communication, and so on). Th… --- ## [When Should You Choose EMT Over RMS Simulation?](https://community.opal-rt.com/t/when-should-you-choose-emt-over-rms-simulation/136)
**Author:** [@francois.tempez](https://community.opal-rt.com/u/francois.tempez)\ **Replies:** 5\ **Last updated:** [October 8, 2026, 8:04am UTC](https://community.opal-rt.com/t/when-should-you-choose-emt-over-rms-simulation/136 "2026-10-08T08:04:05Z")
One topic that regularly comes up in discussions with utilities, OEMs, universities, and research institutes is the choice between EMT and RMS simulation. The distinction seems clear in theory, but in practice the bound… --- ## [How to set a fault block in HYPERSIM](https://community.opal-rt.com/t/how-to-set-a-fault-block-in-hypersim/137)
**Author:** [@Thais\_Blasi](https://community.opal-rt.com/u/Thais_Blasi)\ **Replies:** 2\ **Last updated:** [August 3, 2026, 6:48pm UTC](https://community.opal-rt.com/t/how-to-set-a-fault-block-in-hypersim/137 "2026-08-03T18:48:16Z")
Here are some steps to help you to configure the fault block on your Hypersim model. Prerequisites It is strongly recommended to read the Fault Element Wiki page available at 3-Phase Fault Wiki Page Steps Step 1: Run… --- ## [Understanding Digital Twins: Concepts, Evolution, and Benefits](https://community.opal-rt.com/t/understanding-digital-twins-concepts-evolution-and-benefits/138)
**Author:** [@Thais\_Blasi](https://community.opal-rt.com/u/Thais_Blasi)\ **Replies:** 1\ **Last updated:** [July 31, 2026, 1:28am UTC](https://community.opal-rt.com/t/understanding-digital-twins-concepts-evolution-and-benefits/138 "2026-07-31T01:28:55Z")
Digital Twins have become one of the most discussed topics across engineering industries, but the concept is often misunderstood. Are they simply simulations? Are they just digital models? What makes them different? Thi… --- ## [BMS Testing Fundamentals](https://community.opal-rt.com/t/bms-testing-fundamentals/128)
**Author:** [@PFA007](https://community.opal-rt.com/u/PFA007)\ **Replies:** 0\ **Last updated:** [July 21, 2026, 7:36pm UTC](https://community.opal-rt.com/t/bms-testing-fundamentals/128 "2026-07-21T19:36:16Z")
BMS Testing Fundamentals Understanding Modern Battery Management System Validation As electric vehicles, energy storage systems, aerospace platforms, and off-highway machines continue to evolve, the Battery Management … --- ## [📥 Importing PSCAD Models into HYPERSIM](https://community.opal-rt.com/t/importing-pscad-models-into-hypersim/126)
**Author:** [@PFA007](https://community.opal-rt.com/u/PFA007)\ **Replies:** 0\ **Last updated:** [July 21, 2026, 7:21pm UTC](https://community.opal-rt.com/t/importing-pscad-models-into-hypersim/126 "2026-07-21T19:21:22Z")
Step-by-Step Create a new HYPERSIM model Open HYPERSIM → File → New → choose your target folder, name your file, and click Save Open the Network Import tool Go to the Network section of the main ribbon → click Networ…