Skip to content
Projects
Groups
Snippets
Help
Loading...
Sign in
Toggle navigation
A
ADC Testing
Project
Project
Details
Activity
Cycle Analytics
Repository
Repository
Files
Commits
Branches
Tags
Contributors
Graph
Compare
Charts
Issues
1
Issues
1
List
Board
Labels
Milestones
Merge Requests
0
Merge Requests
0
Wiki
Wiki
image/svg+xml
Discourse
Discourse
Members
Members
Collapse sidebar
Close sidebar
Activity
Graph
Charts
Create a new issue
Commits
Issue Boards
Open sidebar
Projects
ADC Testing
Commits
4a8839cd
Commit
4a8839cd
authored
Sep 01, 2011
by
Federico Asara
Browse files
Options
Browse Files
Download
Email Patches
Plain Diff
Documentation update.
parent
31c36db1
Hide whitespace changes
Inline
Side-by-side
Showing
1 changed file
with
60 additions
and
0 deletions
+60
-0
act.lyx
Docs/act.lyx
+60
-0
No files found.
Docs/act.lyx
View file @
4a8839cd
...
...
@@ -192,6 +192,19 @@ Ideal ADC transfer function
\end_layout
\begin_layout Subsection
Single Tone performance evaluation
\end_layout
\begin_layout Standard
In this mode the application will read a signal, be it from a file, synthetic
or from an ADC, and will try to evaluate a bunch of parameters, assuming
the data describes a sinewave.
The algorithms will eliminate any incoherency during the performance evaluation
, will then determine the frequency of the sinewave and then will calculate
\end_layout
\begin_layout Subsubsection
Parameters explained
\end_layout
...
...
@@ -293,6 +306,30 @@ where
is the i-th harmonic expressed in dB.
\end_layout
\begin_layout Subsection
Two Tone Intermodulation Distortion evaluation
\end_layout
\begin_layout Standard
The application will read a signal from a source that is supposed to represent
two sinewaves with a very small difference between their frequencies.
If the ADC introduces harmonic distortions, these will be close to the
signal; these interferences cannot be easily eliminated by a filter.
\end_layout
\begin_layout Subsection
Frequency Sweep evaluation
\end_layout
\begin_layout Standard
This test mode is by far the most complete and complicated of all.
The application will control directly both a waveform generator (it could
also be a DAC) and the ADC being tested.
The idea is to generate a sinewave with a constant amplitude and change
its frequency in a defined range, using a certain succession of steps.
\end_layout
\begin_layout Section
Parameters evaluation formulae and algorithms
\end_layout
...
...
@@ -997,6 +1034,29 @@ A good value of
\end_layout
\begin_layout Section
PAGE: Python ADC and Generators API
\end_layout
\begin_layout Standard
The PAGE API offers a Pyhton interface to control both ADC and generators;
a generator could be a waveform generator, like the Agilent 33250A, or
a DAC.
\end_layout
\begin_layout Subsection
Generators
\end_layout
\begin_layout Standard
A Generator is a device that outputs analog data following some specifications,
or from a digital signal.
All the generator should be able to produce a sinewave with a predefined
amplitude, frequency and DC component.
This allows us to implement
\end_layout
\begin_layout Section
ACT: ADC Characterization Toolkit
\end_layout
...
...
Write
Preview
Markdown
is supported
0%
Try again
or
attach a new file
Attach a file
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment