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Professional Automation Computer Crestron PAC2
3. Optional Z-BUS Cards: Single port 10/100 Ethernet, Dual Port WAN-LAN-10/100 Ethernet, or
Dual Port WAN-LAN-10/100 Ethernet-USB.
4. The PAC2 provides a maximum of 50 watts (DC) for all network devices. Depending on the
network power requirements, it may be necessary to add one or more Crestron external 24VDC
supplies. Refer to “Built-In Cresnet Hub/Repeater” on page 9 for details, and to “Network Wiring”
on page 16 for a caution concerning the use of non-Crestron power supplies.
5. Only 32 net devices may be connected to any group of four connectors on the top panel, and 32
more may be connected to the NET connector on the front panel. For more information on controls,
ports, and indicators, refer to “Physical Description” on page 5.
6. Cresnet Accelerator increases effective network speed and fan-out by a factor of eight when a Poll
Accelerator is added to the system.
NOTE: The PAC2 supports a large number of devices for physical wiring without
the need for a separate CNXHUB. Note, however, that only 252 devices can be
program controlled (NET IDs 03 to FE).
4 • Professional Automation Computer: PAC2 Operations Guide – Doc. 5941