[Info-vax] VMS faxing

gah4 gah4 at u.washington.edu
Mon Aug 16 22:00:06 EDT 2021


On Monday, August 16, 2021 at 7:26:46 AM UTC-7, Rich Jordan wrote:

(snip)

> I can't see a power supply issue causing comm issues that exactly duplicate
> the same flaws/hashing/lines on a given fax no matter what machine it is sent to.
> Or that change to plain old dropped scan lines with two specific inter-line delay
> settings in the fax software (the faxes come out clean, with some lines vertically
> compressed because entire scan lines are missing);
> it really has to be something on the communication side. 

The serial port is about the only thing that uses a -12V power supply on most
systems, so in theory a problem on that could cause mysterious serial port problems.

I do agree that it isn't likely in this case, though.





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