Although the PC Card may still operate in the range of -20° to 70° C,
operation outside the range of 0° to 55° C may no longer be according to
specifications.
Power Characteristics
Doze
Mode
10 mA
Receive
Mode
180
mA
Transmit
Mode
280
mA
Power
Supply
5
V
Networking Characteristics
Compatibility
IEEE 802.11 Standard for Wireless LANS (DSSS)
Wi-Fi (Wireless Fidelity) certified by the Wireless Ethernet Compatibility Alliance
(WECA).
Network Operating System
Microsoft® Windows® Networking
Host Operating System
Microsoft Windows 98, Millennium Edition (Me), 2000:
NDIS5 Miniport Driver
Media Access Protocol
CSMA/CA (Collision Avoidance) with Acknowledgment (ACK)
Data Rate
High
11 Mb/s
Medium
5.5 Mb/s
Standard
2 Mb/s
Low
1 Mb/s
The cards use an automatic Transmit Rate Select mechanism.
Radio Characteristics
Radio Characteristics of TrueMobile 1150 PC Cards may vary:
According to the country where the product was purchased.
According to the type of product that was purchased.
Wireless communication is often subject to local radio regulations. Although TrueMobile 1150 wireless networking products have been designed for operation in the license-free 2.4 GHz band, local radio regulations may impose a number of limitations to the use of wireless
communication equipment.
To comply with such regulations, TrueMobile 1150 PC Cards are marketed with dedicated channel-sets with a number of factory-programmed channels identified by the
following acronyms:
ETS for countries that adhere to the regulations as defined by the European
Telecommunications Standards Institute (ETSI).
FCC for countries that adhere to the regulations as defined by the US
Federal Communications Commission (FCC).
FR for France.
JP for Japan.
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 & 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
Range
(100 bytes User Data) / Transmit Rate
High
Speed 11 Mb/s
Medium
Speed 5.5 Mb/s
Standard
Speed 2 Mb/s
Low
Speed 1 Mb/s
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
-83 dBm
-87 dBm
-91 dBm
-94 dBm
Delay Spread
(at FER of <1%)
65 ns
225 ns
400 ns
500 ns
The range of your wireless devices can be affected when the antennas 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.
In Open Office environments, antennas can "see" each other, i.e. there are no physical obstructions between them.
In Semi-open Office environments, work space is divided by shoulder-height, hollow wall
elements; antennas are at desktop level.
In Closed Office environments, work space is separated by floor-to-ceiling brick walls.
Supported Frequency Sub-bands
Subject to the radio regulations that apply in your country, your TrueMobile 1150 PC Card may support a different set of 2.4 GHz channels (see table below). Consult your Authorized TrueMobile 1150 Reseller or Dell Sales office for information
about the radio regulations that apply in your country.
TrueMobile 1150 IEEE 802.11 Channels Sets
Frequency
Range
2400-2500
MHz
Channel
ID
FCC
ETSI
France
Japan
1
2412
2412
-
2412
2
2417
2417
-
2417
3
2422
2422
-
2422
4
2427
2427
-
2427
5
2432
2432
-
2432
6
2437
2437
-
2437
7
2442
2442
-
2442
8
2447
2447
-
2447
9
2452
2452
-
2452
10
2457
2457
2457
2457
11
2462
2462
2462
2462
12
-
2467
2467
-
13
-
2472
2472
-
14
-
-
-
-
When installing TrueMobile 1150 PC Cards the channel configuration is
managed as follows:
For TrueMobile 1150 PC Cards installed into wireless clients that operate in an "Peer-to-Peer" mode, the PC Card will default use channel 10.
