I know I am jumping on Joey’s post. But I have been using a LIMP jig I built with Arta LIMP to get the impedance data. I am using a super old laptop that only exists to do this one thing becasue it has duplex audio with a separate mic jack. If someone has an extra DATS they are not using I would be interested in upgrading into the 21 century.
Let me check my stash, I think I have one.
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Mine is available, DATS V2 PM if interested
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Yeah I was getting by for a while with a LIMP box + ARTA and using a tracing tool to get the ZMA file. Then got the DATS v4. Very nice to direct convert to ZMA without all the fuss. Probably alot more accurate too as some stretching or shrinking can occur in the tracing process. And opened up a way to easily test caps and coils. Now I can unwind coils to needed values.
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ARTA exports natively in ZMA.
Not if you are a cheapass like me using the freeware version. 
With ARTA not being supported anymore, just use REW (and call it an REW box/ jig).
No, LIMPS will export the zma regardless of license status.
Regardless you have to have a way to extract true dcr.
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ARTA has been completely free since last December. Development and support has stopped, author is retired. I tossed Dayton to the curb years ago in favour of a “ARTA jig” or “LIMP jig” or “dual channel jig” or whatever you want to call it, works with ARTA, REW, or SE just the same. Under the hood a DATS is just an ARTA jig with a USB audio codec chip attached and proprietary software. From my experience, REW does the best job of T/S extraction, if you are clever you can use DATS with REW too.
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Ok, well the version I had at the time It didn’t. That’s all I’m saying.
I had REW but didn’t know it could do any of that.