At Gunrunner John's suggestion, here is a featured thread for uploading old DCS instruction manuals and other out-of-print DCS reference documents.
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Just a reminder folks...
This is NOT a DISCUSSION thread. The ONLY posts that should appear in this thread are those which have files linked, listed or attached, as Barry has done with the first few entries.
If we clutter this thread with discussion posts it will only make it more difficult to find the important reference files and other materials that this thread is intended to provide.
Often, a question is asked on the forum as regards the differences between the various TIU hardware revisions (models). Following is a table of these differences from The DCS O Gauge Companion 2nd Edition.
If you like what you see here, imagine how much more information is in the other 241 pages...
Recommended guidelines for retrofitting DCS to modular layouts.
Here is a collection of information about creating custom tach tapes, note that I previously posted a printable image of the MTH tach tape in this thread. The PDF files contain images of tach tapes for various sized flywheels, and then there's this paper that was generated by Hikel O Gauge to facilitate generation of any desired custom tach tape.
My latest set of chain files for the PS32 boards used for repairs and upgrades.
If you're looking for the PS32 board chain files, start here!