EVAL-AD7475 Datasheet, PDF (8/13 Pages) Analog Devices – Evaluation Board for 1MSPS, 12-Bit ADC

EVAL-AD7475/AD7495CB
Figure 4. The Setup Screen
Taking Samples
When the user clicks Sample the software will instruct the
Evaluation Board Controller to take the required number
of samples at the required frequency from the evaluation
board. These samples are then uploaded and displayed. An
FFT and Histogram are also calculated and displayed. If
the user clicks Cont Samp the software will repeat the
process indefinitely until the user clicks the button again.
While the software is continuously sampling data the other
control buttons are disabled.
Other Buttons
The Reset button will cause the Evaluation Board Con-
troller to perform a reset function. When this happens the
power supplies are turned off and the program in DSP
memory is lost. The user should repeat the setup instruc-
tions to download another program if required.
The Quit button will exit the software, the program run-
ning on the Evaluation Board Controller is not termi-
nated.
MENU BAR ITEMS
The main screen of the Evaluation Board Controller con-
tains a number of options available as pull-down menu
items. The functions of these are listed below.
File Menu:
Setup Menu: Selecting this option displays the Setup
Screen as shown in Figure 4.
Load Raw Data: Selecting this option allows the user to
load data which had been saved by the software during a
previous session.
Save Raw Data: Selecting this option allows the user to
save the current set of sample data points. The data can be
reloaded to the Evaluation Board Controller software at a
later date or can be used by other programs for further
analysis
Save Binary Data: Selecting this option allows the user to
save the current set of sample data points. The data is
saved in binary format as a text file. This method can be
useful for examining code flicker, looking for stuck bits
etc.
Save FFT Data: Selecting this option allows the user to
save the current set of FFT data points. FFT data cannot
be reloaded into the Evaluation Board Controller software
but can be loaded into other software packages for further
analysis.
Exit: Quits the program.
Printer Port:
This menu item allows the user to select which printer
port should be used for communication with the Evalua-
tion Board Controller.
LPT1: This option selects 0x378 as the printer port
address. This is the default option.
LPT2: This option selects 0x278 as the printer port
address.
PRN: This option selects 0x3BC as the printer port
address.
Help:
This menu item gives information about the current revi-
sion of software for the particular evaluation board being
used.
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