Range – Harmony House 802.11a User Manual
Page 63
Troubleshooting
63
Windows 98/ME computers:
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C:\WINDOWS\INF\NETPR11A.INF
•
C:\WINDOWS\INF\OTHER\PROXIM,INC.NETPR11A.INF
•
C:\WINDOWS\SYSTEM32\DRIVERS\PROX11A.SYS
•
C:\WINDOWS\SYSTEM\PROX11A.SYS
Windows NT computers:
•
C:\WINDOWS\SYSTEM32\PROX11AN4.DLL
•
C:\WINDOWS\SYSTEM32\DRIVERS\PROX11AN4.SYS
Windows 2000 computers:
•
C:\WINNT\SYSTEM32\DRIVERS\PROX11A.SYS
•
C:\WINNT\INF\NETPR11A.INF
•
C:\WINNT\INF\NETPR11A.PNF
Windows XP computers:
•
C:\WINDOWS\SYSTEM32\DRIVERS\PROX11A.SYS
•
C:\WINDOWS\INF\NETPR11A.INF
•
C:\WINDOWS\INF\NETPR11A.PNF
10. Shut down the computer.
11. Remove the Harmony 802.11a network adapter from the computer.
Range
Every environment is unique with different obstacles, barriers, materials, etc., and,
therefore, it is difficult to determine the exact range that will be achieved without
testing. Radio signals may reflect off of some obstacles or be absorbed by others
depending on their construction.
The IEEE 802.11a specification supports eight data rates: 54 Mbps, 48 Mbps,
36 Mbps, 24 Mbps, 18 Mbps, 12 Mbps, 9 Mbps, and 6 Mbps. Harmony’s 2X mode
supports eight data rates: 108 Mbps, 96 Mbps, 72 Mbps, 48 Mbps, 36 Mbps,
24 Mbps, 18 Mbps, and 12 Mbps. Operation at 6 Mbps or 12 Mbps provides greater
range than operation at 54 Mbps or 108 Mbps.
Note:
Products sold in Europe, Japan, and Singapore do not support 2X mode.
By default, a Harmony 802.11a network adapter will automatically adjust the data rate
to maintain a usable radio connection. Therefore, in 802.11a mode a client that is
close to an Access Point may operate at 54 Mbps while a client that is on the fringe of
coverage may operate at 6 Mbps.
The Harmony 802.11a network adapters includes two integral antennas to support
antenna diversity, which can improve system reliability. Due to the characteristics of
radio waves, it is possible that one antenna may provide better performance than a
second antenna installed a short distance away.