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RCX5 Memory


Polar RCX5 training computer can store your heart rate, running speed/pace, and cycling speed and distance. The recording of wanted training data can be done at 1, 2, 5, 15 or 60 second intervals, according to your selection. The default recording rate is 5 seconds. With a longer interval, you'll get more recording time. A shorter recording interval fills the memory more rapidly and you get less recording time but the accuracy of the recorded data is much higher for training analysis in The maximum recording times for each recording rate can be found in the user manual.

You can change recording rate in Settings menu → General Settings → Recording rate.

Memory notifications


  • 90% of memory full. Shown in pre-training and in training pause modes. You have 10% or less memory left on the training computer. The remaining recording time is shown. Recording rate and number of enabled sensors affect the remaining recording time.

  • 1 hour memory left. Shown in training mode.

  • Maximum recording time exceeded. Shown when recording time exceeds.

  • Memory full. Shown when memory is depleted.

If memory gets full during training, the training computer stops recording analysable data. The total training time is still stored. This means that when training file is transferred to for further analysis heart rate and graphs of other data are shown up to the point where recording stopped, the time-line on the rest of the curve being blank.

To free memory, delete files from the RCX5 you have already transferred to For detailed instructions, see user manual.
A deleted training file is not removed from Week Summaries. To clear information from Week Summaries, select  MENU→ Data → Reset week summaries? Select Yes. 

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