True PS 850, Owner'S Manual

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Chapter 4: Programming &     

Operation

Instructions:

Put on a Polar® or compatible transmitter chest strap.

Press ENTER until you reach desired program.

Enter your target heart rate using numeric keys or + and – keys and press ENTER

Adjust time using numeric keys or + and – keys and press ENTER

Enter maximum speed and press ENTER

Enter maximum grade and press ENTER

Press START to begin program

Warm up:

At the beginning of an HRC workout, the treadmill is in full Manual Control mode. Gradually increase your 

work level to slowly raise your heart rate to within 10 beats per minute (bpm) of your target heart rate. The 

treadmill will operate as if in manual mode during the warm up stage. You control both speed and incline. 

You may only increase speed and grade to the present maximum values entered. It is important that you 

start at a low level of perceived exertion and gradually increase your work load over several minutes until 

you approach your target heart rate. This allows your body to adapt to your workout. Increasing work load 

gradually will allow you to enter the heart rate control stage without overshooting your target. 

note: 

Warming up too fast may cause you to overshoot your target. If this occurs it may take several 

minutes before the computer software can control your heart rate. You may overshoot and undershoot for 

several minutes until control is achieved. 

Wear the heart rate transmitter, provided with your treadmill, directly against your skin, 1-2 inches below 

the pectoral muscles/breast line. Initially the transmission signal for heart rate may be erratic or non 

existent. 

Perspiration on your skin is necessary for proper transmission. 

At the heart rate control stage

the treadmill takes control of speed and incline, 

keeping your heart rate within a few bpm of your target. If you are using interval HRC, the treadmill 

alternates between work and rest intervals.

Cool-down:

At the end of your workout time or distance, the treadmill reduces workload by half and goes back into 

Manual Control mode, where you directly control your cool-down.

Your treadmill can remember more than one workout setup for a heart rate control workout. You can select 

these in later workouts so you don’t have to re-enter your workout parameters, which tend to stay the same 

from workout to workout.
During workout setup, if you keep pressing ENTER you will continue to scroll through the workout setup 

parameters. You can press ENTER at any time to accept the current parameters and begin your workout.