Motorola MC70 - Enterprise Digital Assistant, Руководство по интеграции

Страница: 38 / 208

2 - 8 MC70 Integrator Guide
Bandwidth Considerations when Daisychaining
Each cradle added to the daisychain impacts the bandwidth provided to the inserted EDAs, particularly when
the EDAs attempt to send and receive at data rates that exceed the bandwidth provided to the chain (typically
100 Mbps). If an EDA in a daisychained cradle does not use its bandwidth, that bandwidth is allocated to other
inserted EDAs.
Table 2-2 shows available bandwidth, based on 100 Mpbs, for the maximum number of daisychained cradles,
with each attempting transmission at the maximum data rate.
Ethernet Cradle Drivers
The MC70 includes Ethernet cradle drivers that initiate automatically when you place the EDA in a properly
connected Four Slot Ethernet cradle. After inserting the EDA, configure the Ethernet connection:
1.
Tap
Start
>
Settings
>
Connections
tab >
Network Cards
icon. The
Configure Network Adapters
window
appears.
Figure 2-9
Configure Network Adapters Window
2.
In the
My network card connects to:
drop-down list, select the appropriate connection.
3.
In the
Tap an adapter to modify settings:
list, select
USB/Ethernet Series Adapter
.
Table 2-2
Daisychaining Bandwidth
Daisychained Cradles
Bandwidth Provided to Cradle
(Bits/sec)
Inserted EDA’s Share of
Bandwidth
Cradle 1 100,000,000 20,000,000
Cradle 2 20,000,000 4,000,000
Cradle 3 4,000,000 800,000
Cradle 4 800,000 160,000
Cradle 5 160,000 32,000
Cradle 6 32,000 6,400
Cradle 7 6,400 1,280