Thanks for all the suggestions, but no success so far. I double
checked my port and baudrate settings, since there is a lot of
room for mistakes there. Port must be set in 2 places (Windows
Device Manager and ARC XT software). Baudrate must be set
in 3 places (Windows Device Manager, ARC XT software, and
scanner). Also ARC XT seems to like to change the baudrate
default to 57,600.
I apparently have the latest driver for the chip in my USB-1 cable
from Prolific itself.
Switching to FreeScan or other software is going to be a last
ditch option, since I’ve already paid for the ARC XT software.
I have the Windows 8 upgrade DVD sitting on a shelf and have
been meaning to do that. But I had hoped to get the scanner
working before I dealt with a Windows version change.
I have a new BCD396XT. The firmware is V1.11.01. I have installed
ARC XT PRO software, V1.9-Build 2 on Windows 7. I am trying to
get them to talk to each other. I am using the Uniden USB-1 cable.
I have installed the PL-2303 driver software and rebooted. Windows
recognizes the driver. The CheckChip tool tells me I have chip
PL2303HXD which is supposed to work on Windows 7 (and 8).
However the ARC software tells me it cannot detect my scanner.
I have tried baudrates of both 57,600 and 115,200.