EVAL-AD7891-2CB Datasheet, PDF (6/12 Pages) Analog Devices – Evaluation Board for Single Supply, 12-Bit 500 kSPS ADC

EVAL-AD7891-2CB
SOFTWARE DESCRIPTION
Included in the EVAL-AD7891-2CB evaluation board package
is a PC-compatible disk which contains software for controlling
and evaluating the performance of the AD7891-2 when it is
operated with the EVAL-CONTROL BOARD. The EVAL-
AD7891-2CB Demonstration/Evaluation Software runs under
DOS 4.0 or later and requires a minimum of a 386-based
machine with 400kB of base RAM and 500kB of free hard disk
space. The user interface on the PC is a dedicated program
written especially for the AD7891-2.
The disk which accompanies the EVAL-AD7891-2CB contains
several files. The user should create a new directory on the main
PC drive and label this "AD7891-2". Then, all files on the
EVAL-AD7891-2CB disk should be copied into this directory.
The Mouse Driver on the PC should be enabled before running
the software. If this has not been loaded, the program will not
run.
To run the software, simply make the AD7891-2 directory the
current directory and type "go". When the evaluation program
starts, the user sees the screen shown on Figure 3 (without any
FFT or scope waveforms). This is the main screen and it is
divided into three parts. The top part provides the main control
interface for the AD7891-2 evaluation software. The middle
part of the main screen functions as a Digital Storage
Oscilliscope and the bottom part of the main screen operates as
either a Digital Spectrum Analyzer or a Histogram analyzer.
Each part of the screen has several buttons that can be pressed
by using the mouse or the keyboard. To press a button using
the mouse, simply use it to move the on-screen pointer to the
button to be activated and click. To use the keyboard, simply
press the appropriate key as highlighted on the button. Lower
case letters must be used. When a button is pressed, it is
highlighted on the screen. The next button can be highlighted
by using the Tab key or the previous button by holding down
the shift key and the Tab key together. The highlighted button
can also be pressed by pressing the space bar. Pressing the ESC
key halts any operation currently in progress. In this document, if
a button can be activated from the keyboard then the key used is
shown in bold in the button name. For example, "no prog" has the
"p" highlighted in bold, indicating that the button can be activated by
pressing the p key.
Some buttons have a red indicator. A red indicator on the
button means that the function associated with that button is
on. Absence of the red indicator light means that the function
associated with the button is off. The on/off status of these
buttons is changed simply by selecting the button.
Figure 3. Main Screen
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REV. A