MC50 Integrator Guide2-14
Daisychaining Cradles
Daisychain up to four Ethernet cradles to connect several cradles to an Ethernet network.
To daisychain more than one cradle:
1. Connect power to each cradle to daisychain, as shown in Setup on page 2-13.
2. Connect an Ethernet cable to Port 1 of the first cradle as shown in Setup on page 2-13.
3. Connect a second Ethernet cable between Port 2 of the first cradle, and Port 1 of the second.
4. Connect up to two more cradles as described in Step 3.
Figure 2-12. Daisychaining Four Slot Ethernet Cradles
Bandwidth Considerations when Daisychaining
Each cradle added to the daisychain impacts the bandwidth provided to the inserted mobile computers, particularly when the mobile
computers attempt to send and receive at data rates that exceed the bandwidth provided to the chain (typically 100 Mbps). If a mobile
computer in a daisychained cradle does not use its bandwidth, that bandwidth is allocated to other inserted mobile computers.
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.
Table 2-2. Daisychaining Bandwidth
Daisychained Cradles
Bandwidth Provided to Cradle
(Mbit/sec)
Inserted Mobile Computer’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
Ethernet Port 1
Ethernet Port 2
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