Precor p20 - Manual (Page 44)

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Operating and Maintaining the P20 Console
Cross Country
The purpose of the preset program is to simulate an outdoor
running experience. In this case, you can change the overall
profile or intensity of the program (resistance) at any time;
however, you cannot change the shape of the preset "hills"
and "valleys" you see depicted on the display.
Figure 14: Cross Country
Random
Every time this program is selected, a different program
profile appears. The one-minute segments that appear in the
program profile maintain a set resistance that you can
override. The Random program has a default time limit, or you
can press STOP to complete your program sooner.
Aerobic
This program is similar to an Interval program. You can set a
length of time for your fitness session and you can specify the
speed and the incline or resistance.
Figure 15: Aerobic