HP P 1981 A, Installation Manual

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16 English
Radio Specifications
NOTE
The range values provide a rule of thumb and may vary according to the actual
conditions at the location where the product will be installed. The range of the
wireless signal is related to Transmit Rate of the wireless communication. The range
of your wireless devices can be affected when the antennae are placed near metal
surfaces and solid high-density materials. Range is also impacted due to “obstacles”
in the signal path of the radio that may either absorb or reflect the radio signal.
Radio Output Power 15 dbm (nominal)
Spreading 11-chip Barker Sequence
Wireless Data Rate
Environment 11 Mb/s 5.5 Mb/s 2 Mb/s 1 Mb/s
Range if open
1
160 m
(525 ft.) 270 m
(885 ft.) 400 m
(1300 ft.) 550 m
(1750 ft.)
Range if semi-open
2
50 m
(165 ft.) 70 m
(230 ft.) 90 m
(300 ft.) 115 m
(375 ft.)
Range if closed
3
25 m
(80 ft.) 35 m
(115 ft.) 40 m
(130 ft.) 50 m
(165 ft.)
Modulation technique DSSS
CCK DSSS
CCK DSSS
DQPSK DSSS
DBPSK
Receiver Sensitivity
(for BER =10
-5
)
-82 dBm -87 dBm -91 dBM -94 dBm
Delay Spread
(at FER of <1%) 65 ns 225 ns 400 ns 500 ns
1. In Open environments, antennae can “see” each other, i.e. there are no physical obstructions between them.
2. In Semi-open environments, work space is divided by shoulder-height, hollow wall elements, antennas are at
desktop level.
3. Closed environments, work space is separated by floor-to-ceiling brick walls.
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