Subtest 04 Cross Talk & Peak Shift
This subtest writes eight types
of
worst pattern data (shown below)
to
a
cylinder, then reads the data while moving from cylinder
to
cylinder.
Worst
Pattern
Data
Cylinder
'B5ADAD'
o cylinder
'4A5252'
1 cylinder
'EB60B6' 2 cylinder
'149249'
3 cylinder
'63B63B'
4 cylinder
'9C49C4'
5 cylinder
'20B60B'
6 cylinder
'024924' 7 cylinder
Subtest 05 Write fread/compare
(eE)
This subtest writes B5ADADh worst pattern data
to
the CE cylinder on the
lIDO, then reads the data from the CE cylinder and compares it with the
original data.
Subtest 06 Write specified address
This subtest writes specified data to a specified cylinder and head on the lIDO.
Subtest 07 Read specified address
This subtest reads data which
has
been written
to
a specified cylinder and head
on the lIDO.
Subtest
08 ECC circuit
This subtest checks the Error Check and Correction (BCC) circuit functions
of
the specified cylinder and head
on
the lIDO.
Subtest 09 Sequential write
This subtest writes specified 2-byte data
to
all
of
the cylinders on the HDD.
Subtest 10 W-R-C specified address
This subtest writes data
to
a specified cylinder and head on the HDD, then
reads the data and compares it
to
the original data.
3-29
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