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Frequently Asked Questions
Don't see what you need? Submit your question here, send us an email to nl5@sidelinesoft.com, or post your question at NL5 forum.
No, it is not.
Typical SPICE-based simulator is intended for an accurate analysis of a "real" circuit. It uses quite complex models of "real" components, most of which are provided by parts manufacturers. Standard SPICE algorithm has a lot of limitations. Convergence problems may occur even for very simple circuits. For some types of circuits (especially switching), wrong result can be easily obtained, just due to numerical methods used in SPICE. Unlike SPICE, NL5 does not have complex and "accurate" models of non-linear components. Instead, it uses very simple models as much as possible: "ideal" switches and diodes, amplifiers with infinite gain, etc. Some non-linear behaviour can be modelled with piece-wise linear approximation, however most of the time it is not needed at all. Using simple components results in fast and reliable simulation, with almost no convergence problems. Is NL5 similar to PSIM and Simplis?
There are some common features in NL5, PSIM, and Simplis. For example, a switch can open/close at one simulation step, without detailed calculation of the entire switching process ("instantaneous switching"). Other than that, NL5 is very different in terms of its idea, implementation, performance, and features.
A major difference is that NL5 does have "true" ideal switches and diodes, with zero impedance when closed, and infinite impedance when open. PSIM and Simplis always require some small and large impedance to be set. Does NL5 run on Linux and Mac OS?
No, NL5 is Windows only application. However, it can run on Linux and Mac OS under Windows Virtual Machine, such as Wine, for example.
Does NL5 run on Windows 8 and 10?
Yes, it does, although it is not officially tested. However, many customers are already running it on Windows 8 and 10 with no major complains.
I've got error message "The system DLL user32.dll was relocated in memory..."
After installing Microsoft® Security Updates 925902
 and 928843 (MS07-017 and MS07-008, issued on February 13 and April 3, 2007), some programs, including NL5, don't start and will display the following error message. To fix the problem, Microsoft® has issued a patch for this update. We apologise for any inconvenience that these vitiated MS® Security Updates may have caused.
Content of Help file is not shown
If you cannot see content of Help file, most likely the file is blocked. To unblock:
That's right, index search is not implemenetd in the Help file. Please use Contents menu. For detailed information about NL5 operation and features refer to the NL5 Manual.
Please check the following:
License file does not work anymore
You license file will most likely stop working if you:
My Portable License (dongle) does not work on Windows 8 and 10
That's right! Contact us to resolve the problem.
I'd like to upgrade my license
Please contact us for quote and instructions.
Can Network License run as a service?
NL5 License Server is a Windows application, and cannot run as s service. However, along with a Network License file nl5.nll, you will receive a service application NL5LicenseService.exe. Contact your IT department for proper service installation. Please note that service application does have all required license information built into it, so you do not need license file nl5.nll while using the service.
Can I manually modify schematic file?
Yes you can, however at your own risk. No support will be provided.
Can I import/export NL5 schematic from/to SPICE netlist?
No. However, NL5 schematic file is in a text format, so you can obtain all the information needed, and convert it to SPICE netlist yourself.
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