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eWWoB
(How
to Use)
Q)
Who can benefit from using eWWoB?
A)
System
engineer, test engineer, project engineer/manager, and business manager.
Q)
How does a system engineer use eWWoB?
A)
A system engineer, due to his/her functions and duties, will have
good chances to execute all four feature functions: Test Vector,
Signal Analyzer, Link Design, and BER/PER Test. The test vector
generated using eWWoB will include not only the waveform
specifications but also the baseband functions such as data
scrambling, FEC encoding, and interleaving, etc. As a result, it can
be exported to test and verify a receiver design even if a third-party
modem chipset is used. Similarly, the system engineer will incur
Signal Analyzer to help diagnose any transmitter development by
processing imported data files. The transceiver developments under
test may be at either hardware or software level. The system engineer
will use the combination of Link Design and BER/PER Test to help
define system specifications for the system or board-level development.
Q)
How does a test engineer use eWWoB?
A)
eWWoB provides an independent platform to test and measure in-house
transmitter and receiver developments separately, due to an
independent built-in transceiver suite. The interface to eWWoB is
"read" or "write" data files with the selected
data format either binary or ASCII. Depending on the stages of the
testing jobs, he/she may need some kind of test equipment to collect
or feed data. Ultimately, he/she will need to take/feed data from/to
the prototype (development cycle) or "Unit Under Test"
(production cycle).
Q)
What kind of test equipment are needed in conjunction with using eWWoB?
A)
If the testability is deigned into the prototype or product, there
is probably no need to incur any test equipment. One of the
requirements for testability is the capability of taking signal
samples at a higher rate (> 2 times of the Nyquist rate to
preserve signal details). However, it is probably easier and more
accurate to use off-the-shelf test equipment to conduct tests. A
generic I/Q signal generator and a modern digital scope are two most
needed equipment. Nowadays, there exist in-expensive PC-based data
acquisition boards that may substitute the (relatively) expensive
(but powerful) digital scope.
Q)
What can a manager benefit from eWWoB?
A)
eWWoB models end-to-end communication systems specified by industry
standards. As a result, it contains plenty of standard based
information as well as communications system knowledge. Such pool of
knowledge and information should be helpful to decision-making processes.
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