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46
Chapter 5 -Troubleshooting
Problem
The SpaceLink Access Point Manager still cannot find or connect to the SpaceLink Access Point after verifying the IP address and
LAN cable, changes cannot be made, or password is lost.
Solution
In case the SpaceLink Access Point is inaccessible, you can restore the SpaceLink Access Point’s factory default settings.
Use a straightened paper clip to press the button located in the hole labeled “Reset” on the back of the SpaceLink Access
Point and keep it depressed over 5 seconds. The amber power
LED will darken and then light up when reset is successful.
Reset to Defaults
The following are factory default values. These values will be present when you first receive your SpaceLink Access Point, if you push the reset button on the back of the SpaceLink Access Point over 5 seconds, or if you click the “Reset to
Defaults” on the “General” page of the SpaceLink Access Point Manager.
Name
Password
IP address assignment
Primary port
IP address
Subnet mask
Gateway
SSID
Channel
WEP type
AP name
Operational mode
Only allow IP packets
Authorization table
Host AP / Wireless Bridge MAC Add.
Fragmentation threshold
RTS threshold
Preamble mode
Authentication type
Default Value
“asus” obtain an IP address automatically
Ethernet
192.168.39.130
255.255.255.0
0.0.0.0
“default”
1
WEP disable
“ASUS AP”
AP mode
Disable
Disable
00-00-00-00-00-00
2346
2346
Long preamble
Both
ASUS SpaceLink 802.11g Access Point
Chapter 5 -Troubleshooting
Problem
My 802.11b PC Card will not associate with the SpaceLink Access Point.
Solution
Follow these steps:
1. Try to bring the devices closer together; the PC Card may be out of range of the SpaceLink Access Point.
2. Confirm that the SpaceLink Access Point and PC Card have the same
SSID.
3. Confirm that the SpaceLink Access Point and PC Card have the same
Encryption settings, if enabled.
4. Confirm that the SpaceLink Access Point’s Air and Link LEDs are solid green.
5. Confirm that the authorization table includes the MAC address of the
SpaceLink PC card if “Authorization Table” is enabled.
6. Confirm that the operational mode is “Access Point” mode.
7. Confirm that the SpaceLink Access Point and SpaceLink PC card have the same preamble mode.
Problem
The throughput seems slow.
Solution
To achieve maximum throughput, verify that your antennas are well-placed, not behind metal, and do not have too many obstacles between them. If you move the client closer to the SpaceLink Access Point and throughput increases, you may want to consider adding a second SpaceLink Access
Point and implementing roaming.
• Check antenna, connectors and cabling.
• Verify network traffic does not exceed 37% of bandwidth.
• Check to see that the wired network does not exceed 10 broadcast messages per second.
• Verify wired network topology and configuration.
ASUS SpaceLink 802.11g Access Point 47
48
Chapter 5 -Troubleshooting
Problem
I cannot find SpaceLink Access Points using the SpaceLink Access Point Manager.
Solution
To configure the SpaceLink Access Point through a wireless LAN card, your computer must be in the same subnet of the SpaceLink Access Point.
You cannot find SpaceLink Access Points with subnet different from your computer within the same gateway. You must change your computer to the same subnet as the SpaceLink Access Point. The factory default subnet of the SpaceLink Access Point is "192.168.39.0".
If you put the SpaceLink Access Point on different subnets, but physically connected inside the same gateway, the following symptoms will occur:
For example, if your computer’s TCP/IP settings are:
IP address: 192.168.1.1, Subnet mask: 255.255.255.0
AP TCP/IP Settings
IP address
Subnet mask
Gateway
Success of Search AP
Ethernet Network
192.168.2.130
255.255.255.0
192.168.2.130
255.255.255.0
Wireless LAN
192.168.2.130
255.255.255.0
0.0.0.0
Not 0.0.0.0
Any value
Yes, then you can No, you should No, you should change the AP to “reset to defaults”, 1. “reset to defaults” match your subnet then search again. 2. change your PC’s IP address to 192.168.39.X
then search again
In Windows NT/2000/XP, you must login with Administrator privileges so that all functions of the SpaceLink Access Point Manager can function correctly. If you do not login as a member of the Administrator group, you cannot run Access Point Manager.
Problem
How do I upgrade the firmware on the SpaceLink Access Point?
Solution
Periodically, a new Flash Code is available for SpaceLink Access Points on the Web site at http://www.asus.com. Ideally, you should update an
Access Point’s Flash Code using the “ASUS AP Live Update” utility installed along with the “ASUS AP Manager”. See the next section for instructions on using “ASUS AP Live Update”.
ASUS SpaceLink 802.11g Access Point
Appendix
6. Appendix
Operating frequency range
The DSSS PHY shall operate in the frequency range of 2.4 GHz to 2.4835
GHz as allocated by regulatory bodies in the USA and Europe or in the 2.471
GHz to 2.497 GHz frequency band as allocated by regulatory authority in Japan.
Number of operating channels
The channel center frequencies and CH ID numbers shall be as shown below.
The FCC (US), IC (Canada), and ETSI (Europe) specify operation from 2.4
GHz to 2.4835 GHz. For Japan, operation is specified as 2.471 GHz to 2.497
GHz. France allows operation from 2.4465 GHz to 2.4835 GHz, and Spain allows operation from 2.445 GHz to 2.475 GHz. For each supported regulatory domain, all channels marked with “Yes” shall be supported.
In a multiple cell network topology, overlapping and/or adjacent cells using different channels can operate simultaneously without interference if the distance between the center frequencies is at least 30 MHz. Channel 14 shall be designated specifically for operation in Japan.
DSSS PHY frequency channel plan
(Regulatory Domains)
CH ID Frequency X’10' X’20' X’30' X’31'
FCC IC ETSI Spain
X’32' X’40'
France MKK
1 2412 MHz Yes
2 2417 MHz Yes
3 2422 MHz Yes
4 2427 MHz Yes
5 2432 MHz Yes
6 2437 MHz Yes
7 2442 MHz Yes
8 2447 MHz Yes
9 2452 MHz Yes
10 2457 MHz Yes
11 2462 MHz Yes
12 2467 MHz -
13 2472 MHz -
14 2484 MHz -
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
-
-
-
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
-
Yes
Yes
Yes
Yes
-
-
-
-
-
-
-
-
-
-
-
-
Yes
Yes
-
-
-
-
-
-
-
-
-
-
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes-
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
ASUS SpaceLink 802.11g Access Point 49
50
Appendix
SpaceLink Access Point Specifications
The following technical specification is for reference purposes only. Actual product’s performance and compliance with local telecommunications regulations may vary from country to country. ASUS will only ship products that are type approved in the destination country.
Ethernet Interface RJ45 for 10BaseT with auto crossover MDI/MDI-X
Data Rate
Modulation
11 Mbps with auto fallback to 5.5, 2 and 1 Mbps
CCK (11Mbps, 5.5Mbps), DQPSK (2Mbps), DBPSK (1Mbps)
Technology
RF Output Power
Antenna
Range
Direct Sequence Spread Spectrum
14 ~ 17 dBm (at nominal temperature range)
2 internal polarization diversity dipole antennas,
One RF connector for optional external antenna
Indoor 130 ft (40 m), semi-open 330 ft (100 m), outdoor (LOS, Light-Of-Sight) 1500 ft (457 m) at 11Mbps
The range may vary by different environment
Receiver Sensitivity Per< 8% @ length=1024 octets (at nominal temp. range)
11Mbps: -82 to -85 dBm; 5.5Mbps: -85 to -88 dBm;
2 Mbps: -88 to -91 dBm; 1 Mbps: -91 to -93 dBm
Operating Frequency 2.412 to 2.462 GHz (North America)
2.412 to 2.484 GHz (Japan)
2.412 to 2.472 GHz (Europe ETSI)
2.457 to 2.462 GHz (Spain)
2.457 to 2.472 GHz (France)
WEP
Utilities
64/128-bit WEP; each includes 4 user-defined keys
AP Manager: User-friendly utility for discovering and configuring SpaceLink Access Points with Access
Control List features
AP Live Update: Download the newest firmware from the Internet
ASUS SpaceLink 802.11g Access Point
Appendix
Supported OS
SNMP Support
Windows 98, 98SE, ME, NT4, 2000, XP
MIB II, Proprietary Wireless MIBs
LED Indicators Power, Wireless, Ethernet
DC Power Adapter AC Input: 100V to 240V(50 to 60HZ)
DC Output: 5V with max. 1 A current
Operating Temp.
Storage Temp.
0ºC to 55ºC
-20ºC to 70ºC
Humidity
Emissions
5 to 95% (non-condensing)
ETS 300 328 and ETS 300 826; CE Mark
FCC Part 15C, Section 15.247
Size
Weight
40 mm (L) 138 mm (W) 150 mm (H) (± 0.2)
400 g excluding power supply
Warranty One Year Limited Warranty
Operating Modes
Access Point Standard 802.11b based access point, provides roaming capability between Wi-Fi compliant Access
Points
Access Point Client Act as a client station to associate with existing access points and bridge traffic from Ethernet port to a remote backbone network through the wireless interface
Wireless Bridge Point-to-point or point-to-multi-points to bridge individual networks
ASUS SpaceLink 802.11g Access Point 51
Appendix
DNS Server Address (Domain Name System)
DNS allows Internet host computers to have a domain name and one or more IP addresses. A DNS server keeps a database of host computers and their respective domain names and IP addresses, so that when a user enters a domain name into the Internet browser, the user is sent to the proper IP address. The DNS server address used by the computers on your home network is the location of the DNS server your ISP has assigned.
DSL Modem (Digital Subscriber Line) - A DSL modem uses your existing phone lines to transmit data at high speeds.
Direct-Sequence Spread Spectrum
See next few pages for detailed explanation.
Encryption
This provides wireless data transmissions with a level of security.
Extended Service Set (ESS)
A set of one or more interconnected basic service set (BSSs) and integrated local area networks (LANs) can be configured as an Extended Service Set.
ESSID (Extended Service Set Identifier)
You must have the same ESSID entered into the gateway and each of its wireless clients. The ESSID is a unique identifier for your wireless network.
Ethernet
The most widely used LAN access method, which is defined by the IEEE
802.3 standard. Ethernet is normally a shared media LAN meaning all devices on the network segment share total bandwidth. Ethernet networks operate at 10Mbps using CSMA/CD to run over 10-BaseT cables.
Firewall
A firewall determines which information passes in and out of a network.
NAT can create a natural firewall by hiding a local network’s IP addresses from the Internet. A Firewall prevents anyone outside of your network from accessing your computer and possibly damaging or viewing your files.
52 ASUS SpaceLink 802.11g Access Point
Appendix
Gateway
A network point that manages all the data traffic of your network, as well as to the Internet and connects one network to another.
IEEE
The Institute of Electrical and Electronics Engineers. The IEEE sets standards for networking, including Ethernet LANs. IEEE standards ensure interoperability between systems of the same type.
IEEE 802.11
IEEE 802.xx is a set of specifications for LANs from the Institute of
Electrical and Electronic Engineers (IEEE). Most wired networks conform to 802.3, the specification for CSMA/CD based Ethernet networks or 802.5, the specification for token ring networks. 802.11 defines the standard for wireless LANs encompassing three incompatible (non-interoperable) technologies: Frequency Hopping Spread Spectrum (FHSS), Direct
Sequence Spread Spectrum (DSSS), and Infrared. 802.11 specifies a carrier sense media access control and physical layer specifications for 1 and 2
Mbps wireless LANs.
IEEE 802.11a / IEEE 802.11b
See next few pages for detailed explanations.
Infrastructure
A wireless network centered about an access point. In this environment, the access point not only provides communication with the wired network but also mediates wireless network traffic in the immediate neighborhood.
IP (Internet Protocol)
The TCP/IP standard protocol that defines the IP datagram as the unit of information passed across an Internet and provides the basis for connectionless packet delivery service. IP includes the ICMP control and error message protocol as an integral part. It provides the functional equivalent of ISO OSI Network Services.
IP Address
An IP address is a 32-bit number that identifies each sender or receiver of information that is sent across the Internet. An IP address has two parts: the identifier of a particular network on the Internet and an identifier of the particular device (which can be a server or a workstation) within that network.
ASUS SpaceLink 802.11g Access Point 53
Appendix
ISM Bands (Industrial, Scientific, and Medicine Bands)
Radio frequency bands that the Federal Communications Commission
(FCC) authorized for wireless LANs. The ISM bands are located at 902
MHz, 2.400 GHz, and 5.7 GHz.
ISP (Internet Service Provider)
An organization that provides access to the Internet. Small ISPs provide service via modem and ISDN while the larger ones also offer private line hookups (T1, fractional T1, etc.).
LAN (Local Area Network)
A communications network that serves users within a defined geographical area. The benefits include the sharing of Internet access, files and equipment like printers and storage devices. Special network cabling (10 Base-T) is often used to connect the PCs together.
MAC Address (Media Access Control) - A MAC address is the hardware address of a device connected to a network.
NAT (Network Address Translation) - NAT masks a local network’s group of IP addresses from the external network, allowing a local network of computers to share a single ISP account. This process allows all of the computers on your home network to use one IP address. This will enable access to the Internet from any computer on your home network without having to purchase more IP addresses from your ISP.
NIC (Network Interface Card)
A network adapter inserted into a computer so that the computer can be connected to a network. It is responsible for converting data from stored in the computer to the form transmitted or received.
Packet
A basic message unit for communication across a network. A packet usually includes routing information, data, and sometimes error detection information.
54 ASUS SpaceLink 802.11g Access Point
Appendix
PCMCIA (Personal Computer Memory Card International
Association)
The Personal Computer Memory Card International Association (PCMCIA), develops standards for PC cards, formerly known as PCMCIA cards. These cards are available in three types, and are have about the same length and width as credit cards. However, the different width of the cards ranges in thickness from 3.3 mm (Type I) to 5.0 mm (Type II) to 10.5 mm (Type III).
These cards can be used for various functions, including memory storage, landline modems and wireless modems.
PPP (Point-to-Point Protocol)
PPP is a protocol for communication between computers using a serial interface, typically a personal computer connected by phone line to a server.
PPPoE (Point-to-Point Protocol over Ethernet)
Point-to-Point Protocol is a method of secure data transmission. PPP using
Ethernet to connect to an ISP.
Radio Frequency (RF) Terms: GHz, MHz, Hz
The international unit for measuring frequency is Hertz (Hz), equivalent to the older unit of cycles per second. One megahertz (MHz) is one million
Hertz. One gigahertz (GHz) is one billion Hertz. The standard US electrical power frequency is 60 Hz, the AM broadcast radio frequency band is 0.55-
1.6 MHz, the FM broadcast radio frequency band is 88-108 MHz, and wireless 802.11 LANs operate at 2.4 GHz.
SSID (Service Set ID)
SSID is a group name shared by every member of a wireless network. Only client PCs with the same SSID are allowed to establish a connection.
Station
Any device containing IEEE 802.11 wireless medium access conformity.
Subnet Mask
A subnet mask is a set of four numbers configured like an IP address. It is used to create IP address numbers used only within a particular network.
ASUS SpaceLink 802.11g Access Point 55
Appendix
TCP (Transmission Control Protocol)
The standard transport level protocol that provides the full duplex, stream service on which many application protocols depend. TCP allows a process or one machine to send a stream of data to a process on another. Software implementing TCP usually resides in the operating system and uses the IP to transmit information across the network.
WAN (Wide Area Network)
A system of LANs, connected together. A network that connects computers located in separate areas, (i.e., different buildings, cities, countries). The
Internet is a wide area network.
WECA (Wireless Ethernet Compatibility Alliance)
An industry group that certifies cross-vender interoperability and compatibility of IEEE 802.11b wireless networking products and to promote that standard for enterprise, small business, and home environments.
WLAN (Wireless Local Area Network)
This is a group of computers and other devices connected wirelessly in a small area. A wireless network is referred to as LAN or WLAN.
56 ASUS SpaceLink 802.11g Access Point
Appendix
IEEE 802.11b (11Mbits/sec)
In 1997, the Institute of Electrical and Electronics Engineers (IEEE) adopted the 802.11 standard for wireless devices operating in the 2.4 GHz frequency band. This standard includes provisions for three radio technologies: direct sequence spread spectrum, frequency hopping spread spectrum, and infrared. Devices that comply with the 802.11 standard operate at a data rate of either 1 or 2 Mbps.
In 1999, the IEEE created the 802.11b standard. 802.11b is essentially identical to the 802.11 standard except 802.11b provides for data rates of up to 11 Mbps for direct sequence spread spectrum devices. Under 802.11b, direct sequence devices can operate at 11 Mbps, 5.5 Mbps, 2 Mbps, or 1
Mbps. This provides interoperability with existing 802.11 direct sequence devices that operate only at 2 Mbps.
Direct sequence spread spectrum devices spread a radio signal over a range of frequencies. The IEEE 802.11b specification allocates the 2.4 GHz frequency band into 14 overlapping operating Channels. Each Channel corresponds to a different set of frequencies. See the Appendix to determine the center frequency used by each Channel.
If operating multiple 802.11b Wireless PCI Cards in the same vicinity, the distance between the center frequencies must be at least 25 MHz to avoid interference. Note that the Channels available to an 802.11b Wireless PCI
Card will vary from country to country. In the United States, the 802.11b
standard allocates 11 operating Channels for direct sequence devices. Channels
1, 6, and 11 are independent and do not overlap with each other. To avoid interference between 802.11b Wireless PCI Cards, It is recommended that you configure the Wireless PCI Cards using only Channels 1, 6, and 11.
ASUS SpaceLink 802.11g Access Point 57
Appendix
Direct-Sequence Spread Spectrum (for 802.11b)
Spread spectrum (broadband) uses a narrowband signal to spread the transmission over a segment of the radio frequency band or spectrum. Directsequence is a spread spectrum technique where the transmitted signal is spread over a particular frequency range. The Space Link Wireless PCI
Card uses Direct-Sequence Spread Spectrum (DSSS) for radio communication.
Direct-sequence systems communicate by continuously transmitting a redundant pattern of bits called a chipping sequence. Each bit of transmitted data is mapped into chips by the Wireless PCI Card and rearranged into a pseudorandom spreading code to form the chipping sequence. The chipping sequence is combined with a transmitted data stream to produce the Wireless
PCI Card output signal.
Wireless mobile clients receiving a direct-sequence transmission use the spreading code to map the chips within the chipping sequence back into bits to recreate the original data transmitted by the Wireless PCI Card.
Intercepting and decoding a direct-sequence transmission requires a predefined algorithm to associate the spreading code used by the transmitting
Wireless PCI Card to the receiving wireless mobile client.
This algorithm is established by IEEE 802.11b specifications. The bit redundancy within the chipping sequence enables the receiving wireless mobile client to recreate the original data pattern, even if bits in the chipping sequence are corrupted by interference. The ratio of chips per bit is called the spreading ratio. A high spreading ratio increases the resistance of the signal to interference. A low spreading ratio increases the bandwidth available to the user. The Wireless PCI Card uses a constant chip rate of
11Mchips/s for all data rates, but uses different modulation schemes to encode more bits per chip at the higher data rates. The Wireless PCI Card is capable of an 11 Mbps data transmission rate, but the coverage area is less than a 1 or 2 Mbps Wireless PCI Card since coverage area decreases as bandwidth increases.
58 ASUS SpaceLink 802.11g Access Point
Appendix
IEEE 802.11a (54Mbits/sec)
The 802.11b standard was designed to operate in the 2.4-GHz ISM
(Industrial, Scientific and Medical) band using direct-sequence spreadspectrum technology. The 802.11a standard, on the other hand, was designed to operate in the more recently allocated 5-GHz UNII (Unlicensed National
Information Infrastructure) band. And unlike 802.11b, the 802.11a standard departs from the traditional spread-spectrum technology, instead using a frequency division multiplexing scheme that's intended to be friendlier to office environments.
The 802.11a standard, which supports data rates of up to 54 Mbps, is the
Fast Ethernet analog to 802.11b, which supports data rates of up to 11
Mbps. Like Ethernet and Fast Ethernet, 802.11b and 802.11a use an identical
MAC (Media Access Control). However, while Fast Ethernet uses the same physical-layer encoding scheme as Ethernet (only faster), 802.11a uses an entirely different encoding scheme, called OFDM (orthogonal frequency division multiplexing).
The 802.11b spectrum is plagued by saturation from wireless phones, microwave ovens and other emerging wireless technologies, such as
Bluetooth. In contrast, 802.11a spectrum is relatively free of interference.
The 802.11a standard gains some of its performance from the higher frequencies at which it operates. The laws of information theory tie frequency, radiated power and distance together in an inverse relationship.
Thus, moving up to the 5-GHz spectrum from 2.4 GHz will lead to shorter distances, given the same radiated power and encoding scheme.
ASUS SpaceLink 802.11g Access Point 59
Appendix
COFDM (for 802.11a)
Power alone is not enough to maintain 802.11b-like distances in an 802.11a
environment. To compensate, vendors specified and designed a new physical-layer encoding technology that departs from the traditional directsequence technology being deployed today. This technology is called
COFDM (coded OFDM). COFDM was developed specifically for indoor wireless use and offers performance much superior to that of spreadspectrum solutions. COFDM works by breaking one high-speed data carrier into several lower-speed subcarriers, which are then transmitted in parallel.
Each high-speed carrier is 20 MHz wide and is broken up into 52 subchannels, each approximately 300 KHz wide. COFDM uses 48 of these subchannels for data, while the remaining four are used for error correction.
COFDM delivers higher data rates and a high degree of multipath reflection recovery, thanks to its encoding scheme and error correction.
Each subchannel in the COFDM implementation is about 300 KHz wide.
At the low end of the speed gradient, BPSK (binary phase shift keying) is used to encode 125 Kbps of data per channel, resulting in a 6,000-Kbps, or
6 Mbps, data rate. Using quadrature phase shift keying, you can double the amount of data encoded to 250 Kbps per channel, yielding a 12-Mbps data rate. And by using 16-level quadrature amplitude modulation encoding 4 bits per hertz, you can achieve a data rate of 24 Mbps. The 802.11a standard specifies that all 802.11a-compliant products must support these basic data rates. The standard also lets the vendor extend the modulation scheme beyond 24 Mbps. Remember, the more bits per cycle (hertz) that are encoded, the more susceptible the signal will be to interference and fading, and ultimately, the shorter the range, unless power output is increased.
60 ASUS SpaceLink 802.11g Access Point
Appendix
7. Safety Information
Federal Communications Commission Statement
This device complies with FCC Rules Part 15. Operation is subject to the following two conditions:
• This device may not cause harmful interference, and
• This device must accept any interference received, including interference that may cause undesired operation.
This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to Part 15 of the Federal Communications
Commission (FCC) rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
CAUTION!
You are cautioned that changes or modifications not expressly approved by the party responsible for compliance could void your authority to operate the equipment.
Reprinted from the Code of Federal Regulations #47, part 15.193, 1993.
Washington DC: Office of the Federal Register, National Archives and
Records Administration, U.S. Government Printing Office.
ASUS SpaceLink 802.11g Access Point 61
62
Appendix
Canadian Department of Communications
This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian
Department of Communications.
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme
NMB-003 du Canada.
Regulatory Information / Disclaimers
Installation and use of this Wireless LAN device must be in strict accordance with the instructions included in the user documentation provided with the product. Any changes or modifications (including the antennas) made to this device that are not expressly approved by the manufacturer may void the user's authority to operate the equipment. The manufacturer is not responsible for any radio or television interference caused by unauthorized modification of this device, or the substitution of the connecting cables and equipment other than manufacturer specified. It is the responsibility of the user to correct any interference caused by such unauthorized modification, substitution or attachment. Manufacturer and its authorized resellers or distributors will assume no liability for any damage or violation of government regulations arising from failing to comply with these guidelines.
CAUTION: To maintain compliance with FCC's RF exposure guidelines, this equipment should be installed and operated with minimum distance [20cm] between the radiator and your body. Use on the supplied antenna. Unauthorized antenna, modification, or attachments could damage the transmitter and may violate FCC regulations.
Safety Information
In order to maintain compliance with the FCC RF exposure guidelines, this equipment should be installed and operated with minimum distance
[20cm] between the radiator and your body. Use only with supplied antenna.
Unauthorized antenna, modification, or attachments could damage the transmitter and may violate FCC regulations.
CAUTION: Any changes or modifications not expressly approved in this manual could void your authorization to use this device.
ASUS SpaceLink 802.11g Access Point
Appendix
MPE Statement
Your device contains a low power transmitter. When device is transmitted it sends out Radio Frequency (RF) signal.
Caution Statement of the FCC Radio Frequency
Exposure
This Wireless LAN radio device has been evaluated under FCC Bulletin
OET 65C and found compliant to the requirements as set forth in CFR 47
Sections 2.1091, 2.1093, and 15.247(b)(4) addressing RF Exposure from radio frequency devices. The radiation output power of this Wireless LAN device is far below the FCC radio frequency exposure limits. Nevertheless, this device shall be used in such a manner that the potential for human contact during normal operation – as a mobile or portable device but use in a body-worn way is strictly prohibit. When using this device, a certain separation distance between antenna and nearby persons has to be kept to ensure RF exposure compliance. In order to comply with the RF exposure limits established in the ANSI C95.1 standards, the distance between the antennas and the user should not be less than [20cm].
R F Exposure
The antenna(s) used for this transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
ASUS SpaceLink 802.11g Access Point 63
64 ASUS SpaceLink 802.11g Access Point
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