In some cases, it has been demonstrated that a very close proximity between the IT and the Polar heart rate monitor can cause erratic readings to be displayed in Tracker™ Version 5. Consider re-attaching the heartrate monitor's IT to the far end of the chest strap, away from the heart rate monitor.
1. The Tracker Heart Rate Monitor does not appear to be giving consistent readings, although the wireless connection seems strong.
2. Wear and tear of the transmitter- Proper care of the transmitter after use ensures longer service life.
3. Electromagnetic disturbances Electromagnetic disturbances may occur near high voltage power lines, traffic lights, the overhead lines of electric railways, electric bus lines or tram lines, televisions, car motors, bike computers, some motor driven exercise equipment, cellular phones or when you walk through electric security gates. Check your surroundings and move away from the source of interference, or remove the source of the disturbance.
4. The distance between the transmitter and the receiver is too great The maximum transmission range between the transmitter and the receiver is 1 meter (3 ft). If the distance is greater, the receiver may not get all the signals sent from the transmitter. In cases where the transmission range is at its extremes, for example rowing or biking where the receiver is not attached to the wrist, the receiver may display the same heart rate for a long time. To avoid this, keep the distance within 1 meter.
5. Signals from more than one Polar Transmitter within 1 meter transmission range
Note only with non-coded transmitter (T31)! In cases where there are more than one transmitter nearer than 1 meter, and you are using the non-coded transmitter, your receiver can pick up the signal from all transmitters within the range; this can result abnormally high readings. Even if the other transmitter is coded, and yours is non-coded, your receiver may still give an inaccurate reading. To avoid signal crosstalk, keep the transmitters out of transmission range of each other. The coded transmitter and receiver system does not pick up the signal from other heart rate monitors. In case of false readings with a coded transmitter and receiver, check if the code has been locked. After a successful code search, a frame will appear around the heart symbol on the display. If the frames around theheart cannot be seen, start the measurement again and check that you are not near other heart rate monitor users because they may interfere with the code search. Also, high voltage power lines, televisions, mobile phones and other sources of electromagnetic disturbance may interfere with the code search. If the receiver is too close to the transmitter, the code search may receive interference as well.
6. Static electricity, technical sportswear, and special conditions If the humidity of the air is low, or you are exercising in windy conditions (for example, high-speed road racing), a fluttering shirt may rub the transmitter and generate static electricity. This causes additional signals, especially if the contact between skin and transmitter is poor. To avoid this:
7. Arrhythmia Polar Heart Rate Monitors are not designed to detect arrhythmia or irregular rhythms and will interpret them as noise or interference. The computer in the wrist receiver will make error corrections, so that arrhythmia beats are not included in the averaged beats per minute. The blinking heart symbol in the face of the wrist receiver, however, will continue to show all heart beats received. In most cases, the Polar HeartRate Monitors will work fine for persons with arrhythmia.
8. Battery of the transmitter is getting low The estimated average battery life of the Polar Transmitter is 2500 hours of use. If the battery of the transmitter is running low, the transmission range decreases and may cause errors similar to those listed above. See more on battery levels in the Polar Transmitter document.