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> Beam Receive Speed
post Jun 6 2005, 06:08 AM
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Hello all,

What speed under beam receive does the Zaurus Irda work?
Under Windows XP it shows connected at 115K but the actual file transfer happens at 9.6 K

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post Jun 16 2005, 02:18 AM
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For slow IrDA (SIR) the maximum connection speed is 115200 bits per second (or 115 kilobits per second). So you divide by 8 to get kilobytes per second (14 KB/s). Add in the fact that IrDA is half duplex - only one side transmits data at a time, lighting conditions and positioning of the devices can degrade the link quality, and also that the IrDA protcol has some overhead then, in practice, you probably only get about 7 KB/ s transferred. Getting 9.6K is quite good if you've achieved it!

Some devices (not the zaurus sad.gif ) have Fast Infrared (FIR) which is 4Mbps which means it is in theory 35 times faster than SIR so you could get 245KB per second transferred.

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