FaroArm® Quantum
August 2017
129
Chapter 6: Maintenance and Troubleshooting
• Can I use all of the communication options at the same time?
You can use multiple communication protocols with the following
limitations:
• USB, Ethernet, and Bluetooth are active at the same time, WLAN is
disabled
• USB and WLAN are active at the same time, Bluetooth is disabled.
• WLAN is disabled if Ethernet is active
• WLAN is disabled if Bluetooth is active
WLAN Primer
A FaroArm node or station can connect to a WLAN that complies with the IEEE
802.11n standard. The Wi-Fi Alliance (an industry group promoting 802.11
networks) has popularized the term Wi-Fi
® for 802.11 compliant networks. The
term WLAN, refers to the slightly more generalized concept of the wireless
extension of a local area network (LAN), though in practice most
implementations use Wi-Fi technology.
The IEEE 802.11 standard specifies a Medium Access Control (MAC) and
physical layers (PHY) for wireless connectivity between stations (STAs). A set of
stations that have joined the same network have access to the same network
services. These services are called a Basic Service Set (BSS). Every BSS has a
unique 48-bit identifier called the Basic Service Set Identifier (BSSID). The
standard specifies two types of BSS; an Independent BSS (IBSS), and an
Infrastructure BSS (BSS).
There are several different PHY layers specified in IEEE 802.11. The Quantum
uses 802.11g.
IEEE 802.11 further breaks up the 2.4 GHz frequency band into 14 overlapping
channels. Each country in the world has its own rules and regulations regarding
radio usage. Many countries join together to coordinate these regulations,
forming “Regulatory Domains”. Most European, Middle Eastern, North and
South American, and African countries, and Australia and Japan use the same
regulations. However, there are differences with regard to which channels and
power levels are permitted. The Quantum can support all 14 channels - factory
programming is performed for the specific country where the Quantum is to be
used (this is not a user option).
Independent BSS (IBSS)
An IBSS is used to form an Ad Hoc network between peer STAs. STAs share
responsibility for maintaining the IBSS and distributing data to each other. IBSS
is NOT supported for the Quantum WLAN.
08m80e00_FaroArm_Quantum.book Page 129 Tuesday, August 22, 2017 11:03 AM
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