OESF Portal | OESF Forum | OESF Wiki | LinuxPDA | #planetgemini chat on matrix.org | #gemini-pda chat on Freenode | #zaurus and #alarmz chat on Freenode | ELSI (coming soon) | Ibiblio


Welcome Guest ( Log In | Register )

> Beam Receive Speed
post Jun 6 2005, 06:08 AM
Post #1

Group: Members
Posts: 17
Joined: 22-December 04
Member No.: 5,991

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

Go to the top of the page
+Quote Post
Start new topic
post Jun 16 2005, 02:18 AM
Post #2

Group: Members
Posts: 92
Joined: 20-May 05
From: London, UK
Member No.: 7,168


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.

Go to the top of the page
+Quote Post

Posts in this topic

Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:


RSS Lo-Fi Version Time is now: 24th May 2018 - 03:23 PM