9-track alignment (skew) tapes for R/W-head adjustment

Date: Sat, 6 Apr 2013 14:00:06 +0100 (BST) From: P Gebhardt <p.gebhardt at ymail.com> To: cctech <cctech at classiccmp.org> Subject: 9-track alignment (skew) tapes for R/W-head adjustment Message-ID: <1365253206.48217.YahooMailNeo at web133105.mail.ir2.yahoo.com> Content-Type: text/plain; charset=iso-8859-1 Hi everybody, I had a look through my tapes and found one from Control Data being labeled "Total Service Tape". Does anybody know, if this tape also serves as an alignment tape? I couldn't find any information about that on the Net so far. I used to make my own skew tapes by just writing a program to write out huge blocks (8K or more) of all 1's. That worked fine for using a scope to check the skew. Not sure if a drive diagnostic would accept such a pattern as a skew tape, though. Jon