With this test the random, 1/3 stroke and full stroke seek/access times are measured.
Random: pickup is moved to random positions on the disc.
1/3: pickup moves from the start of the disc to 1/3rd of the length of the disc.
Full: pickup moves from the start of the disc to the logical end of the disc.
Options
You can choose to measure the Access times or the Seek times.
Difference between Access and Seek times
With the Seek Times test the pickup moves to the requested position.
With the Access Times test the pickup moves to the requested position and a
single sector is read.
Access times are slightly higher, usually a few milliseconds.
The Number of operations is the number of times the pickup will move for each test.