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/dokumenty/skolni/diplomka/description.tex
106,7 → 106,13
 
\secc ADC modules design
 
\midinsert
\picw=10cm \cinspic ./img/ADCdual_Top.png
\picw=10cm \cinspic ./img/ADCdual_Bottom.png
\caption/f FPGA ML605 development board.
\endinsert
 
 
\secc ADC selection
 
There exist several ADC signaling formats currently used in communication with FPGA.
177,6 → 183,12
 
\secc ADC modules interface
 
\midinsert
\picw=10cm \cinspic ./img/FMC2DIFF_top.png
\picw=10cm \cinspic ./img/FMC2DIFF_Bottom.png
\caption/f FPGA ML605 development board.
\endinsert
 
Both of the ADCdual01A modules were connected to FPGA ML605 board trough FMC2DIFF01A adapter board. The design of this adapter module expects the presence of FMC LPC connector and the board is, at the same time, not compatible with MLAB. It is, on the other hand, designed to meet the VITA 57 standard specifications for boards which support region 1 and region 3. VITA 57 regions are explained in the picture \ref[VITA57-regions].
This industry standard guarantees the compatibility with other FPGA boards that have FMC LPC connectors for Mezzanine Card. Schematic diagram of designed adapter board is included in the appendix.
 
273,8 → 285,7
 
\midinsert \clabel[xillybus-interface]{Grabber binary output format}
\ctable {clllllllll}{
\hfil
& \multispan9 \hfil 160bit packet \hfil \crl \tskip4pt
\hfil & \multispan9 \hfil 160bit packet \hfil \crl \tskip4pt
Data name & FRAME & \multispan2 \hfil ADC1 CH1 \hfil & \multispan2 \hfil ADC1 CH2 \hfil & \multispan2 \hfil ADC2 CH1 \hfil & \multispan2 \hfil ADC2 CH2 \hfil \cr
Data type & uint32 & int16 & int16 & int16 & int16 & int16 & int16 & int16 & int16 \cr
Content & saw signal & $t1$ & $t_{1+1}$ & $t1$ & $t_{1+1}$ & $t1$ & $t_{1+1}$ & $t1$ & $t_{1+1}$ \cr
383,11 → 394,13
\endinsert
 
\midinsert
\clabel[phase-phase-difference]{Phase difference}
\clabel[phase-difference]{Phase difference}
\picw=10cm \cinspic ./img/screenshots/phase_difference.png
\caption/f Demonstration of phase difference between antennas.
\endinsert
 
For simplest demonstration of phase difference between antennas, we analyse part of signal by complex conjugate multiplication between channels. Result of this analysis can be seen on picture \ref[phase-difference]. Points of selected part of signal creates clear vector, which illustrates the presence of phase difference.
 
We use ACOUNT02A device for frequency checking on both local oscillators.
 
 
/dokumenty/skolni/diplomka/diplomka.pdf
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/dokumenty/skolni/diplomka/diplomka.tex
60,7 → 60,7
 
%%%%% <-- % The place for your own macros is here.
 
%\draft % Uncomment this if the version of your document is working only.
\draft % Uncomment this if the version of your document is working only.
%\linespacing=1.7 % uncomment this if you need more spaces between lines
% Warning: this works only when \draft is activated!
\savetoner % Turns off the lightBlue backround of tables and
/dokumenty/skolni/diplomka/img/ADCdual_Bottom.png
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/dokumenty/skolni/diplomka/img/ADCdual_Top.png
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/dokumenty/skolni/diplomka/img/FMC2DIFF_Bottom.png
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/dokumenty/skolni/diplomka/img/FMC2DIFF_top.png
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/dokumenty/skolni/diplomka/introduction.log
1,4 → 1,4
This is pdfTeX, Version 3.1415926-2.5-1.40.14 (TeX Live 2013/Debian) (format=pdfcsplain 2014.4.28) 7 MAY 2014 19:14
This is pdfTeX, Version 3.1415926-2.5-1.40.14 (TeX Live 2013/Debian) (format=pdfcsplain 2014.4.28) 9 MAY 2014 00:36
entering extended mode
restricted \write18 enabled.
%&-line parsing enabled.
47,6 → 47,15
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402,7 → 411,104
 
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l.98 \caption
/f One LOFAR LBA antenna element.
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411,8 → 517,8
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l.97 \secc
Modular digitalization systems
l.103 \secc
Modular digitalization systems
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420,7 → 526,7
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l.99 ...xit. It is being developed at Berkley\cite
l.105 ...it. It is being developed at Berkley\cite
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429,7 → 535,7
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l.105 ...heirs ideas are summarised in paper \cite
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438,7 → 544,16
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l.99 ...atively high pricing (around 40 USD) \cite
l.105 ...Z-DOK connectors is shown in picture \ref
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447,7 → 562,105
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l.101 ...ently uses multichannel sound cards \cite
l.108 \clabel
[casper-roach]{CASPER's ROACH data processing board}
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l.109 \picw
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l.110 \caption
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l.113 ...ently uses multichannel sound cards \cite
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456,7 → 669,7
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l.113 ...ateurs are usually non reproducible \cite
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