Rev 1.2
Light-to-Frequency EVM
User’s Guide
www.taosinc.com
1 of 10
L
IGHT
-
TO
-F
REQUENCY
C
ONVERTER
E
VALUATION
M
ODULE
O
VERVIEW
The Light-to-Frequency Converter Evaluation Module facilitates evaluation of the TAOS family of light-
to-frequency converter optical sensors through the use of a motherboard and a set of device-specific
daughterboards. The EVM is designed to interface via a USB port to a host PC running the Windows-
compatible host software application. Several of the daughterboards also feature light-emitting diode
(LED) light sources which can be controlled from the host software to allow evaluation of the sensors
in a variety of physical sensing arrangements.
G
ETTING
S
TARTED
On most PCs, installation will automatically start when the CD-ROM is inserted into the drive. If the
installation does not begin:
Click
Start
Click
Run
Type
D:\setup
and press
Enter.
IMPORTANT: Use the appropriate drive letter in the above
command to install the software. CD-ROMs are commonly
D:
The installation program will guide you through the product installation
Refer to the ReadMe file on CD for the latest installation instructions.
USB EVM H
ARDWARE AND
D
RIVER
D
ESCRIPTION
The specification and system requirements for the hardware portion of the Light-to-Frequency (LTF)
EVM USB module follow:
System Requirements:
Notebook or Desktop PC running Windows 98, 2000, NT4.0, XP
Host Connection:
USB v2.0 using A-type connector
EVM Connection:
Mini B-type connector
Software Installation:
CD-ROM
The Light-to-Frequency Converter EVM comes assembled and consists of three main parts:
1. A
motherboard
2.
Set of Six Daughterboards,
each with a different light-to-frequency converter sensor
3. A
USB cable
NOTE:
Please leave the LTF EVM installation CD-ROM inserted in the drive. This will simplify
the USB Driver Installation steps. The LTF EVM USB driver is located in the D:\FTDI directory
on the CD-ROM. This directory can be specified if it is necessary to manually install the driver
from a specific location.