
FASTRAK MANUAL
Rev. G
19
JUNE 2012
Figure 7-5 RS-232 Cable Connection
NOTE:
Many commercially available cables do not include connections for all pins, so do not
assume that these connections are made. Please refer to
to find the specific interconnection scheme for your host computer in order to obtain a
reliable serial interface.
If you do not find your particular host’s RS-232 I/O interconnection scheme in
, refer to
Contacting Polhemus Customer Service
FAX a copy of your host computer’s pin out identification from its user’s manual. Polhemus will
respond with advice on how to make the serial connection between your FASTRAK and your
host computer.
NOTE: THE FASTRAK SYSTEM BEHAVES AS A TRANSMITTER ON THE RS-232
AND THEREFORE A NULL MODEM CABLE IS REQUIRED.
7.9 USB I/O
The USB I/O connector is a standard Series B connector located on the rear panel of the
FASTRAK SEU as shown in
. The connector on the FASTRAK is a square
shaped connector with two corners shaved off for correct orientation upon insertion. The
connector on the host PC is a Series A connector and is rectangular shaped. Since the connectors
on each end of the USB cable are different, it is impossible to connect the cable incorrectly. The
signals on the FASTRAK USB connector conform to the USB standard. The USB
communication cable used to connect the FASTRAK to the host computer is a standard cable
that is commercially available.
7.10 Optional RS-422 I/O
The optional RS-422 connector is identical to the RS-232 connector in form, fit, function, and
location on the rear of the SEU.
IMPORTANT NOTE:
In order to use this interface, the FASTRAK system must be ordered
from the factory configured for RS-422 communication. A system can be configured for RS-422