Cirrus Logic CDB5529 - Manual (Page 7)

CDB5529
DS246DB1 7
PART II: SOFTWARE
Installation Procedure
To install the software:
1) Turn on the PC.
2) At DOS prompt type WIN to Launch Win-
dows 3.1 TM or later.
3) Insert the Installation Diskette into the PC.
4) From within the Windows Program Manager,
pull down File from the menu bar and select
the Run option.
5) At the prompt
type: A:\SETUP.EXE .
6) The program will begin installation.
7) After a few seconds, the user will be
prompted to enter the directory in which to
install the CVI Run-Time Engine
TM . The
Run-Time Engine TM manages executables
created with Lab Windows/CVI TM and takes
approximately 1.5 megabytes of hard drive
space. If the default directory is acceptable,
select OK and the Run-Time Engine
TM will
be installed there.
8) After the Run-Time Engine TM is installed, the
user is prompted to enter the directory in
which to install the CDB5529 software.
Select OK to accept the default directory.
9) The program takes a few minutes to install.
After the program is installed, double click on
the Eval5529 icon to launch it. After a few
seconds, the user should be in the graphical
user interface environment.
Note: The software is written to run with 640 x 480
(standard VGA in Windows 3.1
TM
) resolution; however,
it will work with 1024 x 768 resolution. If the user inter-
face seems to be a little small, the user might consider
setting the display settings to the 640 x 480 standard
(640x480 was chosen to accommodate a variety of
computers).
Using the Software
At start-up, the window START-UP CONFIGU-
RATION appears first. This window contains in-
formation concerning the software’s title, revision
number, copyright date, etc. Additionally, at the
top of the screen is a menu bar which displays user
options. Notice, the menu bar item Menu is initially
disabled. This eliminates any conflicts with the
mouse or concurrent use of modems. Before pro-
ceeding any further, the user is prompted to select
the serial communication port. To initialize a port,
pull down option Setup from the menu bar and se-
lect either COM1 or COM2. Next, select the appro-
priate part under the Part menu. After a port is
initialized and the part selected, it is a good idea to
test the RS-232 link between the PC and the evalu-
ation board. To do this, pull down the Setup menu
from the menu bar and select the option
TESTRS232. The user is then prompted to set the
evaluation board’s test switches to 011 and then re-
set the board. Once this is done, proceed with the
test. If the test fails, check the hardware connection
and repeat again. Otherwise, set the test switches to
000 (normal mode) and reset the board. The option
Menu is now available and performance tests can
be executed.
The evaluation software provides three types of
analysis tests - Time Domain, Frequency Domain,
and Histogram. The Time Domain analysis pro-
cesses acquired conversions to produce a plot of
Conversion Sample Number versus Magnitude.
The Frequency Domain analysis processes ac-
quired conversions to produce a magnitude versus
frequency plot using the Fast-Fourier transform
(results up to Fs/2 are calculated and plotted). Also,
statistical noise calculations are calculated and dis-
played. The Histogram analysis processes ac-
quired conversions to produce a histogram plot.
Statistical noise calculations are also calculated and
displayed (see figures 4 through figure 9).