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Before starting the communication check first the following things:

Troubleshooting issues:

1. The error message box "Communication port couldn't be opened" appears on the Polar Precision Performance SW 3.0

• The serial port selection is not correct in the IR Communication Port field (Options – Preferences – Hardwarepage ).
• The serial port may have been reserved by another program ( a handheld computer, a modem, a digital camera, etc. ). Some device's controlling programs, for example the Palm HotSync, reserves the port for itself always when the computer starts. You need to exit the program to release the port for other devices. To exit Palm HotSync, right-click on HotSync icon at the taskbar and uncheck Local selection or exit entire software. Check also if you are using data communication softwares, like Nokia Data Suite, etc., which may also reserve the com port.
• Check the serial port settings from the computer's BIOS settings.
• Check the operating system's serial port settings from the Windows Control Panel.

If the yellow light does NOTblink when the communication has been started on the PPP SW 3.0, check the following things:

• Check that the Polar IR Interface is properly connected to the computer's serial port.
• Check that the port selection is right in the software. Open Polar Precision Performance SW 3.0. Select Options – Preferences and open the Hardware page. Then check that the port into which the interface is connected is selected in the IR Communication Port field . You can check the computer's ports by using the System function on the Windows Control Panel.
• Data transmission may be affected by another peripheral device (a mouse, a modem, etc.), which might be connected to the same serial port pair (normally Com1&Com3, Com2&Com4).
• The serial port may be directed to an internal infrared port (especially when using portable PCs).

If the yellow led doesblink, but...

... "No answer from HR monitor" box is displayed on the Polar Precision Performance SW 3.0 a few seconds after starting the communication and

... one of the following texts appears on the wrist receiver:

the CONNECT text is on the wrist receiver all the time

• Check the distance between the wrist receiver and the Polar IR Interface is as short as possible. The recommended maximum distance is 15 cm / 6". The infrared windows should be pointing each other.
• Check that nothing is blocking the communication between wrist receiver and the Polar IR Interface.
• Select Options – Preferences and open the Hardware page. Then click the Options button and check that the Use Internal Infrared Port (only Win95) item is not selected.
• Reset the Heart Rate monitor: (Note that all exercises will remain in the memory. Only time and date needs to be adjusted.)

the INFRARED, COM, 100% is displayed on the wrist receiver:

• Check if the serial port works with another device (a digital camera, a mouse, etc.). You can also use programs that can display the serial port data e.g. the Serial Watcher program.
• Check the serial port settings from the computer's BIOS settings.
• The HR monitor battery may be too low for IR communication although the low battery indicator is not showed on the monitor's display.
• If % values increase very slowly reset the Heart Rate monitor and try again.

several messages INFRARED, COM, 100% or FAILED, COM or UNKNOWN, COM are displayed on the wrist receiver:

• Check the distance between the wrist receiver and the Polar IR Interface as short as possible. The recommended maximum distance is 15 cm / 6".
• Check that there are no other infrared devices near, which may interfere the communication.
• Check that there is not too much sunlight, because it might disturb the communication.
• A bleak surface may interfere the IR communication.
• A game port may interrupt the data transfer in some configurations. Deactivating the game port solves this problem.
• In some computers the voltage level in the serial port may sink too low for the Polar IR Interface. Check if the serial port works with another device (a digital camera, a mouse, etc.). Try to disable other peripheral devices like the computers internal IR port, etc.
• Check if the serial port works with another device (a digital camera, a mouse, etc.). You can use also programs that can display serial port data e.g. Serial Watcher.
• Data transmission may be affected by another peripheral device (a mouse, a modem, etc.), which might be connected to the same serial port pair (normally Com1&Com3, Com2&Com4)
• Check that the low battery indicator on the monitor display is not shown. If it is shown then contact the nearest authorized Polar Service Center. Contact information can be found Polar Service FAQ

• Try the communication through another serial port, if possible.
• Check if data transmission with the wrist receiver and the Polar IR Interface works with another computer.
  If the communication works then... 1) the serial port settings on the PC should be checked, 2) The BIOS settings (IRQ, etc.) on the PC should be checked.
  

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