acer UWA3 USB Wireless Adapter User Guide
- June 9, 2024
- Acer
Table of Contents
acer UWA3 USB Wireless Adapter
INFORMATION TO USER
Federal Communication Commission Interference Statement
This equipment has been tested and found to comply with the limits for a Class
B digital device, pursuant to Part 15 of the 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 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.
REGULATION INFORMATION
The WLAN USB Wireless Adapter must be installed and used in strict accordance
with the manufacturer’s instructions. This device complies with the following
radio frequency and safety standards
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
- This device may not cause harmful interference.
- This device must accept any interference received, including interference that may cause undesired operation.
FOR MOBILE DEVICE USAGE (>20cm/low power eg. AP routers)
Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment. This equipment should be installed and operated with
minimum distance 20cm between the radiator & your body Your device contains a
low power transmitter. When device is transmitted it sends out Radio Frequency
(RF) signal. Use only with supplied antenna. Unauthorized antenna,
modification, or attachments could damage the transmitter and may violate FCC
regulations. You are cautioned that changes or modifications not expressly
approved by the part responsible for compliance could void the user’s
authority to operate the equipment. The use of the USB adapter with
laptops/notebooks is prohibited
STATEMENT
FCC ID: HLZUWA3
FCC
This device complies with part 15of the FCC rules. Operation is subject to the
following two conditions:
- This device may not cause harmful interterence
- this device must accept any interterence received, including interterence that may cause undesired operation of the device
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interterence in a residential installation. This cquipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful intertèrence to radio Communications
Europe- R &TTE Compliance Statement
Hereby, the company who declares that this equipment complies with the
essential requirements and other relevant provisions of DIRECTIVE 1999/5/CE OF
THE EUROPEAN PARLIAMENT AND THE COUNCIL of March 9, 1999 on radio equipment
and telecommunication terminal Equipment and the mutual recognition of their
conformity (R&TTE).
The channel identifiers, channel center frequencies, and regulatory domains of each 22-MHz-wide channel are shown in following Table.
How do I connect to the projector
Please refer to the manual on the included CD for more details.
- Plug the dongle UWA3 into a USB port on the projector
- Connect your device to projector using Wi-Fi
- Install the projection application required by your device
- Use the installed App to start projection
TECHNICAL SPECIFICATIONS
Channel Identifier
|
Frequency (MHZ)
| Regulatory Domains
---|---|---
Japan
|
ETSI
| North America|
Israel
|
Mexico
1| 2412| ˗| ˗| ˗| |
2| 2417| ˗| ˗| ˗| |
3| 2422| ˗| ˗| ˗| ˗|
4| 2427| ˗| ˗| ˗| ˗|
5| 2432| ˗| ˗| ˗| ˗|
6| 2437| ˗| ˗| ˗| ˗|
7| 2442| ˗| ˗| ˗| ˗|
8| 2447| ˗| ˗| ˗| ˗|
9| 2452| ˗| ˗| ˗| ˗|
10| 2457| ˗| ˗| ˗| | ˗
11| 2462| ˗| ˗| ˗| | ˗
12| 2467| ˗| ˗| | |
13| 2472| ˗| ˗| | |
14| 2484| ˗| | | |
TROUBLESHOOTING
Symptom :
The LED is off.
Remedy :
Make sure the dongle is inserted properly. Otherwise contact your vendor.
Symptom :
The LED is always on not blinking.
Remedy :
Make sure that you have installed the driver from attached CD. Otherwise
contact your vendor.
Symptom :
The LED is blinking but the icon does not appear in your icon tray. Remedy :
Make sure that you have installed the Utility from the attached CD.
Symptom :
The dongle is linking, but can’t share files with others.
Remedy :
Make sure the file and printer sharing function is enabled. You can enable the
function by checking the icon of My Computer -> Control Panel -> Network ->
file and printer sharing -> I want to be able to give others to access to my
files.
Symptom :
Slow or poor performance under AP mode
Remedy :
Try to select another channel for the communicating group or move your device
closer to the Access Point.
GLOSSARY
IEEE 802.11 Standard
The IEEE 802.11 Wireless LAN standards subcommittee, which is formulating a
standard for the industry.
Access Point
An internetworking device that seamlessly connects wired and wireless networks
together.
Ad Hoc
An Ad Hoc wireless LAN is a group of personal computers, each with a WLAN
adapter, connected as an independent wireless LAN. Ad Hoc wireless LAN is
applicable at a departmental scale for a branch or SOHO operation.
BSSID
A specific Ad Hoc LAN is called a Basic Service Set (BSS). Personal computers
in a BSS must be configured with the same BSSID.
DHCP
Dynamic Host Configuration Protocol – a method in which IP addresses are
assigned by server dynamically to clients on the network. DHCP is used for
Dynamic IP Addressing and requires a dedicated DHCP server on the network.
Direct Sequence Spread Spectrum
This is the method the wireless cards use to transmit data over the frequency
spectrum. The other method is frequency hopping. Direct sequence spreads the
data over one frequency range (channel) while frequency hopping jumps from one
narrow frequency band to another many times per second.
ESSID
An Infrastructure configuration could also support roaming capability for
mobile workers. More than one BSS can be configured as an Extended Service Set
(ESS). Users within an ESS could roam freely between BSSs while served as a
continuous connection to the network wireless stations and Access Points
within an ESS must be configured with the same ESSID and the same radio
channel.
Ethernet
Ethernet is a 10/100Mbps network that runs over dedicated home/office wiring.
Users must be wired to the network at all times to gain access.
Gateway
A gateway is a hardware and software device that connects two dissimilar
systems, such as a LAN and a mainframe. In Internet terminology, a gateway is
another name for a router. Generally a gateway is used as a funnel
for all traffic to the Internet.
IEEE
Institute of Electrical and Electronics Engineers Infrastructure An integrated
wireless and wired LAN is called an Infrastructure configuration.
Infrastructure is applicable to enterprise scale for wireless access to
central database, or wireless application for mobile workers.
ISM Band
The FCC and their counterparts outside of the U.S. have set aside bandwidth
for unlicensed use in the so-called ISM (Industrial, Scientific and Medical)
band. Spectrum in the vicinity of 2.4 GHz, in particular, is being made
available worldwide. This presents a truly revolutionary opportunity to place
convenient high-speed wireless capabilities in the hands of users around the
globe.
Local Area Network (LAN)
A LAN is a group of personal computers, each equipped with the appropriate
network adapter card connected by cable/air, that share applications, data,
and peripherals. All connections are made via cable or wireless media, but a
LAN does not use telephone services. It typically spans a single building or
campus.
Network
A network is a system of personal computers that is connected. Data, files,
and messages can be transmitted over this network. Networks may be local or
wide area networks.
Protocol
A protocol is a standardized set of rules that specify how a conversation is
to take place, including the format, timing, sequencing and/ or error
checking.
SSID
A Network ID unique to a network. Only clients and Access Points that share
the same SSID are able to communicate with each other. This string is case-
sensitive.
Static IP Addressing
A method of assigning IP addresses to clients on the network. In networks with
Static IP address, the network administrator manually assigns an IP address to
each personal computer. Once a Static IP address is assigned, a personal
computer uses the same IP address every time it reboots and logs on to the
network, unless it is manually changed.
Temporal Key Integrity Protocol (TKIP)
The Temporal Key Integrity Protocol, pronounced tee-kip, is part of the IEEE
802.11i encryption standard for wireless LANs. TKIP is the next generation of
WEP, the Wired Equivalency Protocol, which is used to secure 802.11 wireless
LANs. TKIP provides per-packet key mixing, a message integrity check and a re-
keying mechanism, thus fixing the flaws of WEP.
Transmission Control Protocol / Internet Protocol (TCP/IP)
TCP/IP is the protocol suite developed by the Advanced Research Projects
Agency (ARPA). It is widely used in corporate Internet works, because of its
superior design for WANs. TCP governs how packet is sequenced for transmission
the network. The term “TCP/IP” is often used generically to refer to the
entire suite of related protocols.
Transmit / Receive
The wireless throughput in Bytes per second averaged over two seconds.
Wi-Fi Alliance
The Wi-Fi Alliance is a nonprofit international association formed in 1999
to certify interoperability of wireless Local Area Network products based on
IEEE 802.11 specification. The goal of the Wi-Fi Alliance’s members is to
enhance the user experience through product interoperability. The organization
is formerly known as WECA.
Wi-Fi Protected Access (WPA)
The Wi-Fi Alliance put together WPA as a data encryption method for 802.11
wireless LANs. WPA is an industry-supported, pre-standard version of 802.11i
utilizing the Temporal Key Integrity Protocol (TKIP), which fixes the problems
of WEP, including using dynamic keys.
Wide Area Network (WAN)
A WAN consists of multiple LANs that are tied together via telephone services
and / or fiber optic cabling. WANs may span a city, a state, a country, or
even the world.
Wired Equivalent Privacy (WEP)
Now widely recognized as flawed, WEP was a data encryption method used to
protect the transmission between 802.11 wireless clients and APs. However, it
used the same key among all communicating devices. WEP’s problems are well-
known, including an insufficient key length and no automated method for
distributing the keys. WEP can be easily cracked in a couple of hours with
off-the-shelf tools.
Wireless LAN (WLAN)
A wireless LAN does not use cable to transmit signals, but rather uses radio
or infrared to transmit packets through the air. Radio Frequency (RF) and
infrared are the commonly used types of wireless transmission. Most wireless
LANs use spread spectrum technology. It offers limited bandwidth, usually
under 11Mbps, and users share the bandwidth with other devices in the
spectrum; however, users can operate a spread spectrum device without
licensing from the Federal Communications Commission (FCC).
Fragment Threshold
The proposed protocol uses the frame fragmentation mechanism defined in IEEE
802.11 to achieve parallel transmissions. A large data frame is fragmented
into several fragments each of size equal to fragment threshold. By tuning the
fragment threshold value, we can get varying fragment sizes. The determination
of an efficient fragment threshold is an important issue in this scheme. If
the fragment threshold is small, the overlap part of the master and parallel
transmissions is large. This means the spatial reuse ratio of parallel
transmissions is high. In contrast, with a large fragment threshold, the
overlap is small and the spatial reuse ratio is low. However high fragment
threshold leads to low fragment overhead. Hence there is a trade-off between
spatial re-use and fragment overhead. Fragment threshold is the maximum packet
size used for fragmentation. Packets larger than the size programmed in this
field will be fragmented If you find that your corrupted packets or asymmetric
packet reception (all send packets, for example). You may want to try lowering
your fragmentation threshold. This will cause packets to be broken into
smaller fragments. These small fragments, if corrupted, can be resent faster
than a larger fragment. Fragmentation increases overhead, so you’ll want to
keep this value as close to the maximum value as possible.
RTS (Request To Send) Threshold
The RTS threshold is the packet size at which packet transmission is governed
by the RTS/CTS transaction. The IEEE 802.11-1997 standard allows for short
packets to be transmitted without RTS/CTS transactions. Each station can have
a different RTS threshold. RTS/CTS is used when the data packet size exceeds
the defined RTS threshold. With the CSMA/CA transmission mechanism, the
transmitting station sends out an RTS packet to the receiving station, and
waits for the receiving station to send back a CTS (Clear to Send) packet
before sending the actual packet data. This setting is useful for networks
with many clients. With many clients, and a high network load, there will be
many more collisions. By lowering the RTS threshold, there may be fewer
collisions, and performance should improve. Basically, with a faster RTS
threshold, the system can recover from problems faster. RTS packets consume
valuable bandwidth, however, so setting this value too low will limit
performance.
Beacon Interval
In addition to data frames that carry information from higher layers, 802.11
includes management and control frames that support data transfer. The beacon
frame, which is a type of management frame, provides the “heartbeat” of a
wireless LAN, enabling stations to establish and maintain communications in an
orderly fashion. Beacon Interval represents the amount of time between beacon
transmissions. Before a station enters power save mode, the station needs the
beacon interval to know when to wake up to receive the beacon (and learn
whether there are buffered frames at the access point).
Preamble Type
There are two preamble types defined in IEEE 802.11 specification. A long
preamble basically gives the decoder more time to process the preamble. All
802.11 devices support a long preamble. The short preamble is designed to
improve efficiency (for example, for VoIP systems). The difference between the
two is in the Synchronization field. The long preamble is 128 bits, and
theshort is 56 bits.
WPA2
It is the second generation of WPA. WPA2 is based on the final IEEE 802.11i
amendment to the 802.11 standard.
Temporal Key Integrity Protocol (TKIP)
The Temporal Key Integrity Protocol, pronounced tee-kip, is part of the IEEE
802.11i encryption standard for wireless LANs. TKIP is the next generation of
WEP, the Wired Equivalency Protocol, which is used to secure 802.11 wireless
LANs. TKIP provides per-packet key mixing, a message integrity check and a re-
keying mechanism, thus fixing the flaws of WEP.
802.1x Authentication
802.1x is a framework for authenticated MAC-level access control, defines
Extensible Authentication Protocol (EAP) over LANs (WAPOL). The standard
encapsulates and leverages much of EAP, which was defined for dial-up
authentication with Point-to-Point Protocol in RFC 2284.
Beyond encapsulating EAP packets, the 802.1x standard also defines EAPOL
messages that convey the shared key information critical for wireless
security.
Advanced Encryption Standard (AES)
Security issues are a major concern for wireless LANs, AES is the U.S.
government’s next-generation cryptography algorithm, which will replace DES
and 3DES.