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Operating Systems Solaris Putty Serial Connection problems Post 302832371 by wisecracker on Sunday 14th of July 2013 04:45:49 PM
Old 07-14-2013
I am assuming here that the Windows side uses a USB to "RS232"-Serial converter.

These can be notoriously unreliable.

I am also assuming the the V250 has a _standard_ 9 pin RS232 port.

Try using a high quality USB to "RS232" converter with the Windows machine...

I would suggest changing the speed from 9600 to 1200 and observing whether reliability improves after the change.
Also XON/XOFF can be disabled at the slower speed just in case handshaking is giving grief.
 

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UCYCOM(4)						   BSD Kernel Interfaces Manual 						 UCYCOM(4)

NAME
ucycom -- device driver for Cypress CY7C63743 and CY7C64013 USB to RS232 bridges SYNOPSIS
To compile this driver into the kernel, place the following line in your kernel configuration file: device ucycom Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): ucycom_load="YES" DESCRIPTION
The ucycom driver provides support for the Cypress CY7C63743 and CY7C64013 bridge chips. These chips were designed to provide a low-cost transition path to USB for existing RS232 devices, and have fairly limited capabilities. The ucycom driver behaves like a tty(4). HARDWARE
The ucycom driver currently supports the following devices which incorporate Cypress USB to RS232 bridge chips: o DeLorme Earthmate USB GPS receiver SEE ALSO
tty(4), usb(4) HISTORY
The ucycom driver first appeared in FreeBSD 5.3. AUTHORS
The ucycom driver and this manual page were written by Dag-Erling Smorgrav <des@FreeBSD.org>. BSD
November 22, 2006 BSD
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