AirLink Communications Raven X HSDPA Uživatelská příručka stáhnout pdf (Strana 27)

Hardware Installation of the Raven XE

Rev 2.0 Jul.09 20

Note: When using a DC power

source (such as a solar cell),

Sierra Wireless recommends

placing a fuse (1-2 Amp) on the

line close to the power source to

protect your power source from

possible surges due to shorts or

other line issues.

TheDCpowercablepositiveleadshouldbeconnectedtothe

batteryorpowersourcepositiveterminal.Thepowercable

negativeleadshouldbeconnectedtothebatteryorpower

sourcenegativeterminal.

Tip: The DC power cable has a white wire lead in addition to the

power positive and negative. This is for a feature not present in the

Raven line modems. In the Raven XE, the white wire lead has no

function and can be ignored.

Warning: Explosion Hazard - Do not disconnect

equipment unless power has been switched off or

the area is known to be non-hazardous.

Connecting to a Computer or

other Device

Figure 4-3: Ethernet

TheEthernetportofyourRavenXEcanbeconnecteddirectly

toacomputerorotherEthernetdevicewitheitheracross‐over

cableorastraight‐throughcable.TheEthernetportonthe

RavenXEisauto‐sensingandconnectsat10baseT.Ifyouare

connectingthemodemtoa

huborswitchyoushouldusea

straightthroughcableorusetheuplinkportonthehubor

switchwithacross‐overcable.

Tip: On some computers, the TCP receive window may be set to 16

kbytes. To optimize the throughput of your Raven XE, it is recom

mended that you change the TCP window to 128 kbytes to 256 kbytes

using a TCP Optimizer.

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AirLink Communications Raven X HSDPA Uživatelská příručka Strana 27