In actually reading that manual as I scanned it, I first noticed the mention of
the operator's manual. Should have realized before that there would be one.
Searched this morning.. and found this on ebay:
10281-90905 Operator's Guide Model 1640B/Opt 001 Programmable Serial Da
This listing was ended by the seller on Fri, Nov 8 at 6:49 AM because the
item is no longer available.
Ha ha ha rats. Maybe this thread prompted someone else to find and buy it.
Oh well that's life. Now for a presumably very long ebay search string wait.
