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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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