Specifications
SYSTIMAX® AirSPEED™ AP542
User Guide
195
802.11b/g Channel Frequencies
The available 802.11b/g channels vary by regulatory domain and/or country. 802.11b/g radio certification is available in
the following regions:
–
FCC: U.S., Canada, Mexico, Argentina, Australia
–
ETSI: European Union (with the exception of Hungary and the Czech Republic), Brazil, China, Iceland, India,
Hong Kong, Norway, Saudi Arabia, Singapore, South Korea, Switzerland, Taiwan, United Arab Emirates
–
TELEC: Japan
Some countries restrict 802.11b/g operation to specific frequency bands. The web interface will always display the
available channels depending on the embedded radio’s domain. In the CLI, any channels that are not available are
labeled "Not Supported".
Note 1:
France is restricted to these channels.
Note 2:
Channel 14 is only available when using
802.11b only
mode.
Wireless Communication Range
The range of the wireless signal is related to the composition of objects in the radio wave path and the transmit rate of
the wireless communication. Communications at a lower transmit range may travel longer distances. The range values
listed in the Communications Range Chart are typical distances as calculated by the SYSTIMAX development team for
FCC-certified products. These values provide a rule of thumb and may vary according to the actual radio conditions at
the location where the product is used.
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 (no physical obstructions between them). In Semi-open
Office environments, workspace is divided by shoulder-height, hollow wall elements; antennas are at desktop level. In
a Closed Office environment, solid walls and other obstructions may affect signal strength.
The following tables show typical range values for various environments for FCC-certified products (range may differ
for products certified in other regulatory domains).
Channel ID
FCC
(GHz)
ETSI
(GHz)
TELEC
(GHz)
1
2.412
2.412
2.412
2
2.417
2.417
2.417
3
2.422
2.422
2.422
4
2.427
2.427
2.427
5
2.432
2.432
2.432
6
2.437
2.437
2.437
7
2.442
2.442
2.442
8
2.447
2.447
2.447
9
2.452
2.452
2.452
10
2.457
2.457
1
2.457
11
2.462
2.462
1
2.462
12
-
2.467
1
2.467
13
-
2.472
1
2.472
14
-
-
2.484
2
Содержание AirSPEED AP542
Страница 1: ...SYSTIMAX AirSPEED AP542 User Guide www systimax com SYSTIMAX Structured Connectivity Solutions ...
Страница 42: ...Performing Advanced Configuration SYSTIMAX AirSPEED AP542 User Guide 42 Figure 4 9 Operational Mode Screen ...
Страница 76: ...Performing Advanced Configuration SYSTIMAX AirSPEED AP542 User Guide 76 Figure 4 25 Rogue Scan Screen ...
