NexStar High Speed Multiplexer

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NexStar High Speed Multiplexer

• New NexStar with S-NET, RS-485 and RS-232
  capabilities.
• Handles Home-Run S-NET Reader wiring like
  conventional NexStar.
• Provides RS-232 to RS-485 conversion for Star
  Controller networking.
• Allows RS-232 multiplexing at the same time as
  RS-485.

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• The new High Speed NexStar is Baud rate
  transparent at up to 38,400 baud. It also
  supports optional RS-232 port converters for
  anywhere from one to all five ports. This allows
  it to be used for any combination of RS-485 and
  RS-232 networking from a Host system to legacy
  and new ACUs.
• It is particularly useful for connecting the new
  Star Controllers to a host via their RS-485 port.

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Example Drawings

• S-NET Multiplexing for MIRO and Reader wiring.
• RS-232 to RS-485 conversion for Host to Star
  Controller networking.
• RS-232 to both RS-485 and RS-232 ACU Networking.
• RS-232 to RS-485 ACUs, and RS-232 to CoBox Master
  Ethernet converter.

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• The NexStar High Speed unit will support up to 8
  Readers, 8 Keypads and 8 MIRO devices in an S-NET
  multiplexing application. (All S-NET ports must
  run at 9600 baud and are not user selectable.)
• It will support up to 16 ACUs in any combination
  of RS-485 and RS-232 wiring up to any limits
  supported by a specific Host system. NSM and
  StarGaze support up to 16 controllers on each
  poller port.
• NOTE Each ACU needs its own Power Supply. The
  NexStar should NOT be used to distribute power.
  Current applications require 24-28VDC for all
  ACUs and peripheral components.