Chapter 5
307
Measurement Definition
Data Pattern
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Data Pattern
The Square Waveform pattern, 5th Harmonic NLTS pattern and Pseudo Random Bit
sequence have been provided for Agilent E5022/E5023. For a square waveform there are
six data patterns namely, the HF, LF, Isolated Pulse, Repetitive, Overwrite HF and
Overwrite LF pattern. For each of these patterns the user can set the number of interval
repetition. Although the repetition interval depends on the setting range basically it is the
same. User Defined Pattern has also been provided to allow the user to decide which data
pattern is to be used.
The table below shows the type of data patterns that can be used for the following
measurements.
Write Precompensation
A write precompensation can be performed for Agilent E5022/E5023, it is a three bit off
the target bit, this could either be pre-target bit or post-target bit. This function actually
delays the time to write the data. There are three types of timing delay for precompensation
and each of these timing delays can be set by the precompensation delay pattern.
Data Patterns to be used for the following measurements
Measurement
Data pattern to be used
Parametric Test
HF Pattern, LF Pattern and Isolated Pulse Pattern
5th Harmonic NLTS
5th Harmonic NLTS Data Pattern
Overwrite
Overwrite HF and Overwrite LF
Partial Erasure
1T or 3T Data Pattern
SNR
HF Pattern
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