Buffalo WLA2-G54C User Manual page 16

Specifications
WLA2-G54C Physical Specifications
Dimensions (WxHxD) 56 x 120 x 92 mm
Weight: 0.56lbs (256g)
Temperature & Humidity
Operation 0 to 40 deg. C
Maximum humidity 80%
Transit/Storage 0 to 40 deg. C
Maximum humidity 80% (no condensation)
Power Characteristics
Transmit Mode 0.8A (Normal)
Power Supply 3.3V
Regulatory Information A
Wireless communication is often subject to local radio
regulations. Although AirStation wireless networking products
have been designed for operation in the license-free 2.4 GHz
band, local radio regulations may impose limitations on the use
of wireless communication equipment.
Networking Characteristics Compatibility
• IEEE 802.11 Standard for Wireless LANs (DSSS)
• Wi-Fi (Wireless Fidelity) certified by the Wi-Fi Alliance.
Host Operating System
Microsoft Windows® ME/98/NT4.0/2000/XP
Media Access Protocol
CSMA/CA (Collision Avoidance) with Acknowledgment (ACK)
Radio Characteristics (Typical Indoor Ranges)
R-F Frequency Band 2.4 GHz (2400-2483 MHz)
11 selectable sub-channels
Modulation Technique Direct Sequence Spread Spectrum
• CCK for High & Medium Transmit Rate
• DQPSK for Standard Transmit Rate
• DBPSK for Low Transmit Rate
Spreading 11-chip Barker Sequence
Bit Error Rate (BER) Better than 10 -5
Nominal Output Power 15 dBm (32mW)
Transmit Rate / Range
High Speed 54Mbps
Standard Speed 20 Mbps
Low Speed 1 Mbps
Open Office Environment
160 m (525 ft.)
270 m (885 ft.)
400 m (1300 ft.)
550 m (1750 ft.)Semi-Open Office Environment
50 m (165 ft.)
70 m (230 ft.)
90 m (300 ft.)
115 m (375 ft.)
Closed Office
25 m (80 ft.)
35 m (115 ft.)
40 m (130 ft.)
50 m (165 ft.)
Receiver Sensitivity -69dBm, -72dBm, -77dBm, -81dBm, -85dBm,
-88dBm -87dBm -90 dBm -92 dBm (depends on data rate)
Delay Spread (at FER of <1%) 65 ns 225 ns 400 ns 500 ns (depends
on data rate)
• The range of wireless devices can be affected by metal surfaces,
solid high-density materials and obstacles in the signal path.
• In Open Office environments, clients can "see" each other, i.e.
there are no physical obstructions between them.
• In Semi-open Office environments, work space is separated by
room dividers; client cards are at desktop level.
• In Closed Office environments, workspace is separated by
floor-to-ceiling brick walls.
NOTE:
The range values listed in Table "Radio Characteristics" are
typical distances as measured at Buffalo Technology AirStation
laboratories. These values are provided for your guidance but
may vary according to the actual radio conditions at the location
where the AirStation product is installed.
AirStation IEEE 802.11 Channel Sets
The range of the wireless signal is related to the Transmit Rate of
the wireless communication. Communications at a lower Transmit
range may travel longer distances.
Center Channel ID FCC
1 2412
2 2417
3 2422
4 2427
5 2432
6 2437
15
7 2442
8 2447
9 2452
10 2457
11 2462 1
1 default channel