
Introduction to the System
Data Generation Principles
38
HP 81200 Data Generator/Analyzer Platform User Guide, Revision 2.1
Data Sequences
A sequence specifies which data segments are generated or expected, on
which ports and in which timely order.
A sequence consists of
blocks
. Loops are also part of a sequence.
Sequences are independent of data. This is achieved by defining data in the
Segment Editor or externally as vectors in a text file and using these
segments in the Sequence Editor.
Data Blocks
Blocks are portions of the sequence. Single, several or all blocks may be
repeated a specified number of times. Blocks span across all data ports.
Each block can hold
segments
for each port with patterns of generated
and expected data.
Trigger pulses can be specified to be generated at the beginning of a block
and output by the clock module. If certain events have been detected while
a block is executed, actions can be taken immediately or at the end of the
block.
The length of a block must be a multiple of the blocklength granularity .
Loops have an impact on the minimal blocklength and the allowed number
of blocks (see
“Hardware Dependencies” on page 41
).
Data Segments
Segments can be freely created. A segment has a width and a length. The
width defines the number of parallel signal lines (traces). The length
defines the number of data words (vectors).
Segments can also be created within or imported into a sequence. In this
case, the width of the chosen port and the length of the chosen block are
automatically considered. Data that does not fit into the current block is
ignored.
There are real segments and pseudo segments.
•
Real segments contain either free programmable memorized data, or the
specification of PRBS or PRWS data.
•
Pseudo segments are commands, such as Pause, Don’t care, Expect 0,
Acquire, and so on. Pseudo segments can save channel memory.
New segments are created with the Segment Editor or can be imported
from vector-formatted text files.
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Страница 9: ...HP 81200 Data Generator Analyzer Platform User Guide Revision 2 1 9 What s New in This Release ...
Страница 15: ...HP 81200 Data Generator Analyzer Platform User Guide Revision 2 1 15 Introduction to the System ...
Страница 49: ...HP 81200 Data Generator Analyzer Platform User Guide Revision 2 1 49 Test Development Overview ...
Страница 57: ...HP 81200 Data Generator Analyzer Platform User Guide Revision 2 1 57 Structure of the User Interface ...
Страница 83: ...HP 81200 Data Generator Analyzer Platform User Guide Revision 2 1 83 Setting Global System Parameters ...
Страница 93: ...HP 81200 Data Generator Analyzer Platform User Guide Revision 2 1 93 Connecting the DUT ...
Страница 105: ...HP 81200 Data Generator Analyzer Platform User Guide Revision 2 1 105 Setting Up Ports and Channels ...
Страница 127: ...HP 81200 Data Generator Analyzer Platform User Guide Revision 2 1 127 Choosing the Kind of Measurement ...
Страница 155: ...HP 81200 Data Generator Analyzer Platform User Guide Revision 2 1 155 Creating and Editing Segments ...
Страница 171: ...HP 81200 Data Generator Analyzer Platform User Guide Revision 2 1 171 Using the Data Sequence Editor ...
Страница 181: ...HP 81200 Data Generator Analyzer Platform User Guide Revision 2 1 181 Running the Test ...
Страница 186: ...Running the Test How to Start Stop the Test 186 HP 81200 Data Generator Analyzer Platform User Guide Revision 2 1 ...
Страница 187: ...HP 81200 Data Generator Analyzer Platform User Guide Revision 2 1 187 Viewing Generated and Captured Data ...
Страница 199: ...HP 81200 Data Generator Analyzer Platform User Guide Revision 2 1 199 Using Auxiliary Functions ...
Страница 215: ...HP 81200 Data Generator Analyzer Platform User Guide Revision 2 1 215 How Do I ...
Страница 240: ...Index 240 HP 81200 Data Generator Analyzer Platform User Guide Revision 2 1 ...