W&T 33001 User Manual

W&T

Manual

USB Isolator

Release 1.0
Model 33001

10

W&T USB Isolators

© 09/2010 by Wiesemann & Theis GmbH

Subject to errors and changes:

Since we can make mistakes, none of our statements should be
used without checking. Please let us know of any mistakes or
misunderstandings you are aware of, so that we can recognize
and eliminate them quickly.

Perform work on and with W&T products only as described here
and only if you have read and understood the manual fully.
Unauthorized use can result in hazards. We are not liable for
the consequences of unauthorized use. When in doubt, check
with us or consult you dealer!

11

W&T

Subject to error and alteration

USB Isolators

USB interfaces in stationary computers unfortunately have the
basic drawback of having no galvanic isolation for the signal
lines.

In many applications in the consumer world this limitation is
irrelevant, since the USB devices connected to the PC are
generally supplied through the bus and do not have any
reference to a second ground or to the ground conductor.

In the areas of measurement reading, process control or for
example medical technology, galvanic isolation of the
connected devices is mandatory in order to prevent ground
loops on the USB line.

Wiesemann & Theis therefore offers an USB Isolator which is
described on the following pages along with his technical
specification and a wiring example.

For up-to-date information on new developments on the Inter­net, go to

http://www.wut.de or the e-mail short infos available
from the W&T Interface Club, which you can sign up for at the
W&T Homepage.