D-Link DWL-3600AP User Manual

ModifyingRadioSettings
D-Link UnifiedAccessPointAdministrator’sGuide
November2011 Page61
UnifiedAccessPointAdministrator’sGuide
Channel SelecttheChannel.
Therangeofavailablechannelsisdeterminedbythemodeoftheradiointerfaceandthe
countrycodesetting.IfyouselectAutoforthechannelsetting,theAPscansavailable
channelsandselectsachannelwherenotrafficisdetected.
Thechanneldefinestheportionof
theradiospectrumtheradiousesfortransmittingand
receiving.Eachmodeoffersanumberofchannels,dependingonhowthespectrumis
licensedbynationalandtransnational authoritiessuchastheFederalCommunications
Commission(FCC)ortheInternationalTelecommunicationUnion(ITU‐R).
Whenautomaticchannelassignmentisenabledonthe
ChannelManagementpagefor
Clustering,thechannelpolicyfortheradioisautomaticallysettostaticmode,andthe
AutooptionisnotavailablefortheChannelfield.Thisallowstheautomaticchannel
featuretosetthechannelsfortheradiosinthecluster.
ChannelBandwidth
(802.11nmodes
only)
The802.11nspecification
allowsa40‐MHz‐widechannelinadditiontothelegacy20‐
MHzchannelavailablewith othermodes.The40‐MHzchannelenableshigherdatarates
butleavesfewerchannelsavailableforusebyother2.4GHzand5GHzdevices.
Setthefieldto20‐MHztorestrictthe
useofthechannelbandwidthtoa20‐MHz
channel.
PrimaryChannel
(802.11nmodes
only)
Thissettingcanbechangedonlywhenthechannelbandwidthissetto40MHz.A40‐
MHzchannelcanbeconsideredtoconsistoftwo20‐MHzchannelsthatarecontiguous
inthefrequencydomain.These
two20‐MHzchannelsareoftenreferredtoasthe
PrimaryandSecondarychannels. ThePrimaryChannelisusedfor802.11nclientsthat
supportonlya20‐MHzchannelbandwidthandforlegacyclients.
Selectoneofthefollowingoptions:
• Upper—SetthePrimaryChannelastheupper20‐MHz
channelinthe40‐MHzband.
•Lower—SetthePrimaryChannelasthelower20‐MHzchannelinthe40‐MHzband.
ShortGuard
IntervalSupported
Thisfieldisavailableonlyiftheselectedradiomodeincludes802.11n.
Theguardintervalisthedeadtime,innanoseconds,betweenOFDMsymbols.The
guard
intervalpreventsInter‐SymbolandInter‐CarrierInterference(ISI,ICI).The802.11nmode
allowsforareductioninthisguardintervalfromtheaandgdefinitionof800
nanosecondsto400nanoseconds.Reducingtheguardintervalcanyielda10%
improvementindatathroughput.
Selectoneofthefollowing
options:
•Yes—TheAPtransmitsdatausinga400nsguardIntervalwhencommunicatingwith
clientsthatalsosupporttheshortguardinterval.
•No—TheAPtransmitsdatausingan800nsguardinterval.
STBCMode Thisfieldisavailableonlyiftheselectedradiomodeincludes802.11n.
SpaceTime
BlockCoding(STBC)isan802.11ntechniqueintendedtoimprovethe
reliabilityofdatatransmissions.Thedatastreamistransmittedonmultipleantennasso
thereceivingsystemhasabetterchanceofdetectingatleastoneofthedatastreams.
Selectoneofthefollowingoptions:
•On—TheAPtransmits
thesamedatastreamonmultipleantennasatthesametime.
•Off—TheAPdoesnottransmitsthesamedataonmultipleantennas.
Table19:RadioSettings(Cont.)
Field Description

D-Link DWL-3600AP Specifications

General

Frequency band	2.4 GHz
Cabling technology	10/100/1000Base-T(X)
Networking standards	IEEE 802.11g, IEEE 802.11n, IEEE 802.3, IEEE 802.3ab, IEEE 802.3af, IEEE 802.3u
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Maximum data transfer rate	300 Mbit/s
Quality of Service (QoS) support	Yes
Data transfer rate	1 Gbit/s
Wireless technology	802.11 b/g/n
Antennas quantity	2
Antenna gain level (max)	4.7 dBi
Internal	No
Certification	FCC, CE
LED indicators	LAN, Power, WLAN
Interface	RJ-45
WAN connection	Ethernet (RJ-45)
Security algorithms	128-bit WEP, 64-bit WEP, SSID, WPA, WPA2
Storage temperature (T-T)	-20 - 65 °C
Operating temperature (T-T)	0 - 40 °C
Storage relative humidity (H-H)	5 - 95 %
Operating relative humidity (H-H)	10 - 90 %
Power supply	8 W
Input current	2.5 A
AC input voltage	5 V

Weight and Dimensions

Weight	635 g
Dimensions (WxDxH)	203 x 203 x 48 mm