S-Net Multiplexer
NexStar™ is a 5-port RS-485 multiplexer that provides a
link between a NexSentry access control unit and multiple
RS-485 runs. NexStar™ allows home run wiring to connect
between RS-485 communication devices and a controller.
When used with NexLine™ adapters, NexStar™ provides a
simple and inexpensive way to use existing coaxial wiring in a
digital access control system. This allows use of digital
readers and other RS-485 devices. NexStar™ also provides an
inexpensive solution for upgrading systems with Wiegand wiring
schemes to RS-485 protocol. The RS-485 transceivers are
removable to facilitate port isolation during system
troubleshooting and support for plug-in RS-232 modules. With
the optional RS-232 adapter installed, the NexStar™ becomes a
Half Duplex RS-232 to RS-485 converter.
Key Features
- Four S-Net ports for star configuration wiring to
readers and one port for multiplexing to a controller
- Facilitates installation and/or upgrade by allowing
several different wiring options with NexWatch's advanced
digital controller and components
- Phoenix connectors allow easy wiring
- Built-in termination
- Reliable transfer of data
- Allows increased wiring range by offering home-run
connectability, while still providing multi-drop capability
- Each RS-485 transceiver supports up to 16 S-net devices
per port
- LED indicators for each RS-485 port provide status on
communications activities
- Removable (socketed) RS-485 transceiver chips for ease
in troubleshooting
- Minimizes costly daisy-chain requirements while
improving power and signal distribution efficiency over
daisy chain links
- Allows a high level communication protocol (S-Net),
yielding better performance
- UL-294 listed access control system component
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