Advice wanted on Kennedy 9600 and PDP11/23

From: Jay West <jlwest_at_tseinc.com>
Date: Tue Jul 6 10:12:59 1999

Now that my TC02 is re-installed, it won't work at all. The select light
never comes on. ARGH!!! I'll fiddle with it later today since I'm off work.

If I can't get it working, would anyone be willing to convert some 800bpi
tapes to 1600bpi for me? The tapes are the initial load tapes for
HP2000Access (Timeshare BASIC). My 7970E doesn't speak 800bpi, so I need to
convert them. Of course, the tapes are priceless to me <grin> so I'm loath
to send them out, but they are useless at 800bpi.

On the other hand, I was wondering about what is involved in making my 7900E
read 800bpi? ISTR that different heads are needed - which it too much
modifications to me. GRrrrr....

>It takes a master alignment tape, a scope, and a resistor network that sums
>the outputs from the tape channels. The master alignment tape has
transitions
>that are supposedly well-aligned between all channels, and you tweak the
>head until you get a nice pattern on the scope. I can fax you a few pages
>from drive maintenance manuals on the procedure if you're really
interested.


Well, I have the scope (20mhz ok?), but no alignment tape or resistor
network.

Thanks in advance for all the help!

Jay West
Received on Tue Jul 06 1999 - 10:12:59 BST