EVAL-AD7470_15 Datasheet, PDF (7/20 Pages) Analog Devices – Evaluation Board for 10-/12-Bit High Speed, Low Power ADCs

EVALUATION BOARD SOFTWARE
EVAL-AD7470/AD7472
Figure 3. The Setup Dialog Box
SETUP SCREEN
RUNNING THE SOFTWARE
Figure 3 shows the setup dialog box. The setup dialog box allows
you to load the required configuration file for the evaluation
board. The configuration file gives the software detailed
information about the AD7470/AD7472 evaluation board and
part connected to the EVAL-CONTROL BRD2 such as number
of bits, maximum sampling rate, output coding, maximum
analog input, and power supply requirements. The configura-
tion file also tells the software the name of the DSP program
file, which should be downloaded to the EVAL-CONTROL
BRD2. These files are supplied by Analog Devices with the
evaluation board.
SETTING UP THE EVAL-CONTROL BRD2
Connect the EVAL-CONTROL BRD2 and evaluation board
via the 96-way connector. Then apply power to the EVAL-
CONTROL BRD2. At this stage, the red LED light should be
flashing to indicate that the EVAL-CONTROL BRD2 is
functional and ready to receive instructions. Load the software
(previously installed) before the printer port cable is connected
between the EVAL-CONTROL BRD2 and the PC. This ensures
that the printer port has been initialized properly. The printer
port cable can then be connected between the PC and the EVAL-
CONTROL BRD2.
With the hardware set up, you are now in a position to use the
software to control the EVAL-CONTROL BRD2 and the eval-
uation board. In the main dialog box, select the File menu and
click Setup. This displays the setup form (see Figure 3). A
window on the left of the setup form lists all the available
configuration files. The configuration files are text based files,
which contain information about the particular evaluation board
to be tested. The information covers such things as the part
name, number of samples to be taken, default and maximum
sampling frequency, and power supply settings. The configu-
ration file also contains the name of the DSP program file to be
downloaded to the EVAL-CONTROL BRD2. Select the relevant
configuration file and click Load. The EVAL-CONTROL BRD2
is reset and the DSP program downloaded. When the download
is complete, the power supply settings indicated in the configu-
ration file are set and you may hear some of the relays clicking.
The pull-down menu items such as number of samples and
sampling frequency have been set to the default values specified
by the configuration file. The user is free to change these at will.
Once all the settings have been decided, click Close to return to
the main dialog box.
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