Media Converters
Lantronix CRS2F Series RS-232 to Fiber Media Converter Modules
The CRS2F Series is a Point System remotely managed media converter module that carries RS-232 serial data, including full handshaking signals, over multimode or single-mode fiber far beyond the 15 m limit of copper serial cable.
From $343.35
Overview
About the Lantronix CRS2F Series
The CRS2F Series is in Last Time Buy status. Lantronix states it is being retired and replaced by the ION Platform, and publishes a Point System vs ION comparison and cross reference guide for migration. The CRS2F (part numbers CRS2F3113-100 and CRS2F3114-100) links a remote serial device to a host over fiber, removing the 15 m limit of conventional RS-232 copper cabling in campus or business point-to-point layouts.
Each converter transmits the full set of RS-232 flow control and handshaking signals optically: DCD, RXD, TXD, DTR, DSR, RTS, CTS and signal ground. It supports full or half-duplex asynchronous data at up to 115 Kbps. A DTE/DCE switch allows straight-through cabling on the DB-9 port, and a loopback switch puts both fiber and copper into test mode.
Installed in any Point System chassis, the CRS2F reports local fiber link, local and remote link status, DTE/DCE mode and loopback state to the chassis management software, with read/write access to the remote stand-alone unit for local or remote loopback. Firmware is field upgradeable. Status LEDs show power, copper link and receive data, and fiber link or loopback mode. The module is 22 mm wide, draws 5.0 W and carries FCC Class A and CE marks.
Key capabilities
- Full RS-232 handshaking
- DCD, RXD, TXD, DTR, DSR, RTS and CTS are carried over the fiber, so devices that depend on hardware flow control work unchanged.
- Beyond the 15 m limit
- Fiber extends serial connections to 2 km over multimode or 20 km over single-mode, well past the 15 m reach of copper RS-232.
- DTE/DCE switch
- A DTE/DCE selector switch lets installers use straight-through cables instead of building custom null-modem cabling at each end.
- Remote management and loopback
- Chassis software reads link and mode status and can trigger local or remote loopback on copper or fiber for circuit testing.
How to choose the right CRS2F Series part number
Both CRS2F modules have a DB-9 RS-232 port rated to 15 m; the fiber side sets the part number. CRS2F3113-100 uses 1300 nm multimode fiber with SC connectors to 2 km and an 11.0 dB link budget. CRS2F3114-100 uses 1310 nm single-mode fiber with SC connectors to 20 km and a 16.0 dB link budget. Choose by the fiber already installed and the distance to the remote device, and match the fiber type at both ends of the link.
Configure & order
Find your CRS2F Series part number
Every orderable CRS2F Series configuration, filtered by the specs that actually differ between them. Pick what you need on the left and the matching part numbers appear here.
CRS2F3113-100
$343.35
Ships on backorder
CRS2F3114-100
$610.00
Ships on backorder
Where the CRS2F Series is used
- Linking remote terminals to a host computer over fiber
- Connecting security scanners and access control panels
- Extending POS device serial links across a campus
- Serial alarm system links between buildings
CRS2F Series datasheets & documentation
CRS2F Series FAQ
Is the CRS2F Series discontinued?
The CRS2F Series is in Last Time Buy status and has a product discontinuation notice. Lantronix states it is being retired and replaced by the ION Platform, and provides a Point System vs ION cross reference guide.
How far can the CRS2F extend RS-232 over fiber?
CRS2F3113-100 reaches 2 km over 1300 nm multimode fiber, and CRS2F3114-100 reaches 20 km over 1310 nm single-mode fiber. The DB-9 copper side supports up to 15 m to the serial device.
What baud rate does the CRS2F support?
The CRS2F supports full or half-duplex asynchronous transmission at speeds up to 115 Kbps, complying with EIA/TIA RS-232E and EIA/TIA-574. Hardware flow control signals, including RTS/CTS and DTR/DSR, pass across the fiber with the data.
Which chassis does the CRS2F module fit?
The CRS2F can be used with any Point System chassis. Operating environment depends on the chosen chassis, with the module rated for 0°C to 50°C and 5% to 95% non-condensing humidity.
