A-14 Micro-Tech 9101/9201 Reference Manual, Rev J Thermo Fisher Scientific
6. Press the Count button each time the reference mark passes.
7. Continue to press the Count button when the mark passes, until the
following two conditions are met.
The belt has made at least three complete revolutions.
The total running time of the test exceeds six minutes.
8. After the last revolution is counted, press the Done button.
time a mark passes.
120 sec 1 rev
time a mark passes.
1 sec 0 rev
Length = 1000 ft
Time = 360 sec