Bandwidth Considerations When Daisychaining; Ethernet Cradle Drivers - Motorola MC75A Integrator Manual

2 - 8 MC75A Enterprise Digital Assistant Integrator Guide
Ethernet Port 2
Daisychaining Four Slot Ethernet Cradles
Figure 2-5

Bandwidth Considerations when Daisychaining

Each cradle added to the daisychain impacts the bandwidth provided to the inserted MC75As, particularly
when the MC75As attempt to send and receive at data rates that exceed the bandwidth provided to the chain
(typically 100 Mbps). If an MC75A in a daisychained cradle does not use its bandwidth, that bandwidth is
allocated to other inserted MC75As.
Table 2-3 shows available bandwidth, based on 100 Mpbs, for the maximum number of daisychained cradles,
with each attempting transmission at the maximum data rate.
Daisychaining Bandwidth
Table 2-3
Daisychained Cradles
Cradle 1
Cradle 2
Cradle 3
Cradle 4
Cradle 5
Cradle 6
Cradle 7
* The maximum bandwidth capacity for the mobile computer is 12,000,000 bits/sec.
** Depending on the application, allocated bandwidth may not be adequate.
Note: 100 Mbps is the theoretical maximum. This rate is never actually achieved in any Ethernet

Ethernet Cradle Drivers

The MC75A includes Ethernet cradle drivers that initiate automatically when you place the MC75A in a
properly connected Four Slot Ethernet cradle. After inserting the MC75A, configure the Ethernet connection:
Tap >
1. Start Settings
Speed LED Link LED
Bandwidth Allocation For Each
Ethernet Cradle (bits/sec)
100,000,000
20,000,000
4,000,000
800,000
160,000
32,000
6,400
> tab >
Connections WiFi
Bandwidth Allocation For Each
20,000,000
4,000,000
800,000
160,000
32,000
6,400
1,280
installation.
icon. The
Configure Network Adapters
Ethernet Port 1
Mobile Computer (bits/sec)
window appears.