Change To Pll Enable Section; Software Operation - Analog Devices EVAL-AD7625FMCZ User Manual

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SOFTWARE OPERATION

This section describes the full software operation and all the
windows that appear. When the software is launched, the main
software window opens, and the software searches for hardware
connected to the PC. The user evaluation software launches as
shown in Figure 19. The labels listed in this section correspond
to the numbered labels in Figure 19.
File Menu
The File menu, Label 1 in Figure 19, has the following options:
•
Save Captured Data: saves data to a .CSV file
•
Load Captured Data: loads data for analysis
•
Take Screenshot: saves the current screen
•
Print: prints the window to the default printer
•
Exit: closes the application
Edit Menu
The Edit menu, Label 2 in Figure 19, provides the option to
Initialize to Default Values, which resets the software to its
initial state.
Help Menu
The Help menu, Label 3 in Figure 19, offers help from the
•
Analog Devices website
•
User Guide
•
Context Help
•
About
Throughput
The Throughput field, Label 4 in Figure 19, controls the
throughput. The default throughput (sampling frequency) is
10,000 kSPS for the AD7626, and 6000 kSPS for the AD7625.
The user can adjust the sampling frequency; however, there are
limitations around the sample frequency related to the SCLK
frequency applied. The sample frequency must be at least 500 kSPS.
If the user enters a value exceeding the ability of the ADC (the
AD7625/AD7626 have a maximum sample frequency of 10M/6M),
the software indicates this, and the user must revert to the
maximum sample frequency.
EVAL-AD7625FMCZ/EVAL-AD7626FMCZ User Guide
Samples
From the Samples drop-down menu, Label 5 in Figure 19,
select the number of samples to analyze when running the
software; this number is limited to 1,048,576 samples.
Single Capture and Continuous Capture
Clicking Single Capture, Label 6 in Figure 19, performs a single
capture. Clicking Continuous Capture, Label 7 in Figure 19,
performs a continuous capture from the ADC.
Eval Board Connected
The Eval Board Connected indicator, Label 8 in Figure 19, shows
that the evaluation board is connected. In Figure 19, the connected
evaluation board is the EVAL-AD7626FMCZ.
Voltage Reference
The various options for using the external reference are controlled
by the Control Pins drop-down menu, Label 9 in Figure 19. The
default value is set to 4.096 V (internal reference). The other
options are external reference 4.096 V, external 1.2 V, and
power down. It is recommended to use an on-board
device as an external reference buffer.
PLL Enable
The PLL Enable check box, Label 10 in Figure 19, is used when
the CNV signal is coming from the AD9513. The positions of
JP1 and JP2 must also be changed to A connected to center.
Tabs
There are four additional tabs available for displaying the data
in different formats.
•
Waveform
•
Histogram
•
FFT
•
Summary
To exit the software, go to File > Exit.
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