Cardiovascular Fitness Procedures Manual

2.1.2.2 Elevation - Weekly Check

Figure 2-3. Calibration of elevation

All technologists:

„ Check to make sure the treadmill is level prior to calibration of elevation using a level.

If the treadmill is not level, make adjustments to level treadmill before continuing.

„ Raise the treadmill elevation through its entire range and return to zero. This will

allow the treadmill to perform a self-check.

„ Raise treadmill to 20 percent grade.

„ Using the carpenters square and a level, measure the change in grade from low to high

(rise over run). The change in grade should equal 4 12/16 inches for every 24 inches

of length (or 2 2/8 inches for every 11 inches of length. See Figure 2-3.

„ If the elevation error exceeds +1% grade, repeat the previous steps.

„ If the elevation still exceeds +1% grade in error, report this to the MEC manager. The

MEC manager will call a service representative.

„ See Section 6.4.5 for data entry of these results in the equipment Quality Control

screens.

Quinton MedTrack ST Programmable Controller

The MedTrack ST Programmable Controller is a computerized treadmill controller designed

to regulate speed and grade for Quinton treadmills. See Figure 2-4. Eight different protocols have been

programmed into the controller for NHANES. Each protocol is programmed such that the actual protocol

2.2