TAOS TSL230RD, Руководство пользователя, Страница: 4 / 10

An Evaluation System for the TAOS Light-to-Frequency Converters
www.taosinc.com
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L
IGHT
-T
O
-F
REQUENCY
C
ONVERTER
EVM A
PPLICATION
S
OFTWARE
Software Execution
To start the LTF EVM host application, click:
Start -> Programs -> TAOS Light-to-Frequency Converter EVM -> Light-to-Frequency
Converter EVM
After the EVM application is executed, a Main dialog window (see below) will appear.
Graphical User Interface (GUI)
The LTF EVM demo application consists of a main window with a control section on the left-hand side,
and up to two daughterboard windows depending upon how many daughterboards are installed.
Additionally a Strip Chart recorder window can be invoked which displays the data in a graphical
representation. Each window is explained in more detail in the following sections.
Figure 2 - Light-to-Frequency EVM Main Window
Control Window
The control window appears at the far left of the main application window. It provides control over
measurement mode and measurement update rate of both daughterboard windows. Each section is
explained in detail below.
Measurement Mode
The Measurement section allows selection of measurement mode of the sensor output frequency.
Available options are: Frequency, Period, and Long Period
Frequency measurement uses the technique of counting pulses, or transitions (low-to-high) on the
sensor output pin. The counting takes place over a specified measurement time interval, or integration