HP P1980A, Installation Manual, Page: 23 / 38

English 17
Radio Specifications
The range of the wireless signal is related to the Transmit Rate of the wireless
communication. Communication at lower Transmit range may travel distances.
The range values listed in the table above are typical distances as measured at the
HP laboratories. These values may provide a rule of thumb and may vary according
to the actual radio conditions at the location where the USB Wireless LAN is
installed.
R-F Frequency Band 2.4 Ghz (2400-2500 Mhz)
Number of selectable sub-channels North America (FCC) 11
Europe (ETS) 13
France (FR) 4
Japan (JP) 1
Other countries FCC 11, ETS 13
Modulation Technique Direct Sequence Spread Spectrum
- CCK for high and medium Transmit Rate
- DQPSK for standard Transmit Rate
- DBPSK for low Transmit Rate
Spreading 11-chip Barker Sequence
Bit Rate Error Rate (BER) Better than 10
-
5
Nominal Output Power 15dBm
Range (110 bytes User Data/Transmit
Rate) High Speed
11Mb/s Medium
Speed
5.5Mb/s Standard
Speed
2Mb/s Low Speed
1Mb/s
Open office environment 160 m
(525 ft.) 270 m
(885 ft.) 400
(1300 ft.) 550 m
(1750 ft.)
Semi-open office environment 50m
(165 ft.) 70 m
(230 ft.) 90 m
(300 ft.) 115
(375 ft.)
Closed office 25 m
(80 ft.) 35 m
(115 ft.) 40 m
(130 ft. 50 m
(165 ft.)
Receiver Sensitivity -83 dBm-87 dBm- 91 dBm-94 dBm
Delay Spread (at FER of >1%) 65 ns 225 ns 400 ns 500 ns
USB.book Page 17 Monday, October 30, 2000 5:29 PM