- Bus or String Multi-Drop Capability Dual Masters
Capability
- Two RS-232 or One RS-485 Ports Async Data
Rates Up to 38.4Kbps
- Anti-Streaming (Anti-Jabber)
- Anodized Aluminum Case
- Applications
- Traffic Control
- Industrial Process Control
- Security Systems
- SCADA Networks
Applications
Description
The LT2200/LT2201 String Multi-Drop Fiber Optic
Modems interconnect multiple devices fitted with
RS-232 or RS-485 interfaces. LT2200 and LT2201
are designed for SCADA or POLL-RESPONSE scheme
communication environment. Asynchronous data rates
up to 38.4 Kbps are supported.
The optic signal from upstream and downstream
are decoded and re-transmitted at each node (LT2200
or LT2201). The anti-streaming function of LT2201
can be enabled to prevent failed Remote unit or
RTU from blocking out the response channel.
The LT2200 is the Master unit and LT2201 is the
Remote unit. Each unit provides one or two pair
of fiber interfaces. Either RS-232 or RS-485 interface
can be provided. The Master unit connecting to
host computer can be placed at the end or in the
middle of a pair of optic fiber cable with all
the Remote units daisy chained thorough the optic
cable.
The second Master unit can be placed at the other
end of the optic cable as a backup Master. In
the event of cable breakage or defective Remote
unit, the backup Master can start polling the
Remote units from opposite direction.
Fiber optic connectors are ST; FC or SMA are
optional. Electrical connectors are DB25 female.
Power is 9 to 12VDC, optional 24VAC or 115/230VAC
with an external power cube.
SPECIFICATIONS
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Modems 
