In-flight testing has shown that on iPAQ3800 an application responsible for infrared communication with other devices can get activated by bright sunshine. This application consumes significant amounts of processing power, slowing down all other programs, including WinPilot. This can also interfere with serial port communication, especially in systems that use software drivers to create NMEA sentences, (e.g. NavMan), or with systems that communicate at baud rates higher than 4800 bauds (e.g. Cenfis), which results in 'Awaiting GPS Satellite Lock', or 'Lost GPS signal' messages.
We recommend that our customers who use iPAQ 3800/3700 DISABLE the infrared connection.
To do this, please follow these steps:
1. On your iPAQ 3800/3700 go to Start.Settings, and switch to the
Connections tab at the bottom of the screen
2. Click on Beam icon
3. UNCHECK the 'Receive all incoming beams and select discoverable
mode' box.
For iPAQ 3800 models that contain BlueTooth interface, it is
also recommended to disable that interface on the Connections page.
This issue affects only iPAQ models running the Pocket PC 2002
operating system.