Agilent Technologies E5035A Operation Manual page 317

Hard disk read/write test system
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Measurement Definition
Drive Setup/Control
Drive ON/OFF
Disk clamping, rotation of the spindle and head loading are all performed during the Drive
ON state. While the Drive OFF performs the head unloading, stops the spindle rotation,
unclamps the disk and moves the head to the home position. Parameters can be set by the
"hpe5022_driveState" programming function.
Spindle Rotation Speed
To set parameter for spindle rotation speed use the "hpe5022_spindleSpeed" function and
set the required rpm.
Write Track Offset
You can set the write track offset within the measurement sequence in order to write the
data. To write the data, the head should move automatically to its writing position as
specified by the write track offset. Write track offset can be set either before or after the
drive on state. To set the parameter use the "hpe5022_writeTrackOffset" programming
function.
Read Track Offset
You can set the readtrack offset within the measurement sequence in order to read the data.
To read the data, the head should move automatically to its reading position as specified by
the read track offset. Read track offset can be set either before or after the drive on state. To
set the parameter use the "hpe5022_readTrackOffset" programming function.
Track No
The head is moved to the specified track number and sets the skew angle automatically as it
moves on the specified track. Parameter setting for this function can be done by the
"hpe5022_track" programming function.
Head and Skew Configuration
The head position and skew angle will be set automatically, after setting the data area and
drive configuration and track number. However, you can also set the head position and
skew angle manually as required by measurement. To set the parameters use the
"hpe5022_headPosition" programming function.
Head Load On/Off
Head loading and unloading can be done even while the drive is on either by dynamic
loading or static loading. To set the parameters use the "hpe5022_headLoad" programming
function.
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Chapter 5
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