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VEE Measurement Program Operation
Measurement
NOTE
The parameter values of Channel Bit Rate, Write Current and Sense Current that have been
set in the [Configuration] menu will automatically update similar parameters in this menu.
3. Click on the [Measure] button to start measurement.
Measurement
Display
NOTE
To observe the resulting waveform of the Averaged Waveform use the
"hpe5022_waveAverageData_Q" function. To observe the resulting waveform of the
Dipulse Extraction use "hpe5022_waveDipulseExtraction_Q" function. The results of
NLTS, HETS, 2nd Adj and Echo are returned by the
"hpe5022_waveDipuseExtractionNlts_Q" function using their echo locations.
Time Correlation NLTS
Overview
The Time Correlation (NLTS) is performed by an oscilloscope. If an oscilloscope is not
installed in the system, this measurement can not be performed.
Measurement
The measurement procedure for Time Correlation NLTS is the same as Dipulse Extraction
Procedure
NLTS. Refer to Dipulse Extraction NLTS for the measurement procedure.
150
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Track #
Echo Location
The number of waveform periods are averaged and displayed on the graph. By
specifying the echo location value, the NLTS, HETS (Hard Easy Transition Shift) and
2nd Adj (2nd Adjacent NLTS) are computed automatically. If PRBS (Pseudo Random
Bit Sequence) is changed, the echo location will change automatically.
PRBS
7
X
+X
9
X
+X
See "NLTS Measurement" on page 259 for AC SNR.
Specifies the track number to be tested.
Specifies the echo location for the result
named "Echo" on the top of the display.
Measurement
3
NLTS
+1
HETS
2nd Adj
5
NLTS
+1
HETS
2nd Adj
Echo Location
25.5
-30.5
45.5
-221.5
129.5
234.5
Chapter 3
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