[GreenKeys] ASR 33 progress!

[Brad]

Well done.  Being in a similar boat I can appreciate this, although I've not
had the bell ringing issue.  Do you have any characters it consistently gets
wrong?  My bugbear is L and M right now.

-----Original Message-----
From: GreenKeys [mailto:greenkeys-bounces at mailman.qth.net] On Behalf Of
Jones, Douglas W
Sent: Thursday, December 8, 2016 2:36 PM
To: GREENKEYS BULLETIN BOARD <greenkeys at mailman.qth.net>
Subject: [GreenKeys] ASR 33 progress!

We've reached the point where the Model 33 we're working on at the U of Iowa
is good for typing THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG without more
than a few doubled characters and a few misprints (typos are starting to
dominate our testing).

So, we noticed that the bell was still off, and replaced it.  To our dismay,
the bell always rings, with every character or control character.  I think
we need to adjust the margin bell bellcrank clearance.  We tried bending the
bellcrank using pliers, but no go.  The manual says we need a TP180993
bending tool.

Does someone have one?  A photo would probably give us enough information
that we could make one.

The log entry for today's efforts is here:
-- http://www.cs.uiowa.edu/~jones/pdp8/UI-8/log.shtml#2016-12-08

Here's a photo of several lines of testing:
-- http://www.cs.uiowa.edu/~jones/pdp8/UI-8/2016/12/08-TTYprintQuality.JPG

by the way, do any of the experienced ASR33 maintainers here have any advice
about the adjustments we should fiddle with to improve the print quality?

		Doug Jones
		jones at cs.uiowa.edu
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