Nikon WT-1A Wireless Network Setup Guide 用户手册
Page 5
Wireless Networking with Nikon Cameras
DRAFT #4
802.11b
A common form of wireless networking is the 802.11b or WiFi network. Adopted
by many vendors this is a relatively fast, medium range wireless networking
scheme that is easy to setup and reliable to use. A chip or card in the computer
scheme that is easy to setup and reliable to use. A chip or card in the computer
(or wireless device) converts the 1’s and 0’s of the data to be sent into radio
waves (in the 2.4Ghz frequency) which are then received by a “base station” con-
waves (in the 2.4Ghz frequency) which are then received by a “base station” con-
nected to a wired network. The base station converts the signal back to digital
data and sends it along the network.
data and sends it along the network.
Other versions of this wireless standard are: 802.11g, which is a faster than the
“b” version but just becoming available and 802.11a which is also faster but has
very limited availability. In general 802.11g devices are interchangeable with
802.11b, but the network is slowed to the “b” speed of 11Mbps.
Wireless Access Points or “base stations” have gotten much less expensive and
have added many feature in the last few years. Vendors like Apple Computer, In-
tel, Linksys and many others now make and sell devices which for a few hundred
dollars are not only Wireless Access Points but also Routers, Firewalls and Print
Servers. While an “Access Point” only network device may seem like a good
idea they are generally a little harder to setup. An all-in-one access point/router
adds functionality and are only marginally more expensive while being consider-
ably easier to configure.
tel, Linksys and many others now make and sell devices which for a few hundred
dollars are not only Wireless Access Points but also Routers, Firewalls and Print
Servers. While an “Access Point” only network device may seem like a good
idea they are generally a little harder to setup. An all-in-one access point/router
adds functionality and are only marginally more expensive while being consider-
ably easier to configure.
Range
The range of 802.11 networks depend on several factors, including: the construc-
tion of the building (steel and concrete block transmission more than wood fram-
ing), other devices in use (mobile phones, microwave ovens, etc. As the distance
increases from the receiver the connection continues but at a slower speed. The
chart below shows general connection speeds and how the range is affected by
distance.
ing), other devices in use (mobile phones, microwave ovens, etc. As the distance
increases from the receiver the connection continues but at a slower speed. The
chart below shows general connection speeds and how the range is affected by
distance.
Outdoor
Indoor (few obstacles)
Indoor (obstacles)
1
1Mbps
160m / 525ft
50m / 164ft
25m / 82ft
2Mpbs
400m / 1312ft
90m / 295ft
40m / 131ft
1Mpbs
550m / 1804ft
115m / 377ft
50m / 164ft
The Nikon WT-1 transmitter has two antennas available, the included WA-S1 has
a range up to approximately 30m/90 feet and the optional WA-E1 which has a
range up to 150m/450 feet at full speed. The WT-1 has been tested at a range of
range up to 150m/450 feet at full speed. The WT-1 has been tested at a range of
250m/750 feet at the slower 1Mbps (megabit per second).