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Introduction Quatech Freedom USB Adapter User’s Manual
System requirements
Quatech’s serial USB adapters require the Windows 98/Me/XP/2000/NT4
operating system and an IBM or IBM-compatible PC with a standard
USB port or an add-in USB host adapter. Contact our sales
department for details on current software offerings. Most device
drivers are available for download from the Quatech World Wide Web
site at http://www.quatech.com/
.
Note: The 16-port units (HSU-
100/200/300) require two
USB ports. All the other units
use only one USB port.
Features
Quatech offers an IND option, or surge-suppression board upgrade, to
provide improved performance and industrial-grade reliability.
IND option - surge suppression upgrade
The IND option provides essential protection for reliable use in an
industrial environment. Each communication line has a surge
suppressor capable of sustaining up to 40-A, 20-s peak transient
surges, a clamping voltage of 30 V (15.1 V for 200/300 units), and a
peak energy dissipation of 0.1 Joules.
Table 2 differentiates between
the Freedom USB-1/2/300 part
numbers with and without the
IND o
p
tion.
Table 2 - Product series summary
Part number IND option
Part number
IND
option
SSU-100 no
DSU-100 no DSU-200/300 no
DSU-100IND yes DSU-200/300IND yes
QSU-100 no QSU-200/300 no
QSU-100IND yes QSU-200/300 IND yes
ESU-100 no ESU-200/300 no
ESU-100IND yes ESU-200/300 IND yes
HSU-100 no HSU-200/300 no
HSU-100IND yes HSU-200/300 IND yes
Page 2 Rev 2.02 (2/24/2004)