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Model 278 Specifications

Interface: Electrical - RS-232 Fiber - Multimode full duplex
Signals Supported: TD, RD, RTS, CTS, DSR, DCD, DTR, SG
Speed: Data DC to 115 KBPS Control 1 - RTS/CTS - 14 KBPS Control 2 - DTR/DCP - 14 KBPS
Power: 110V 60Hz, 220V 50Hz optional
Connectors: RS-232 - DB25 male Fiber - ST connectors
Distance: 2 Kms
Wavelength: 830 nm
Power Budget: 12 dB
Switches: DTE/DCE switches, TD/RD, RTS/CTS, and DSR/DCD/DTR as shown below :

Signal DTE Mode DCE Mode
TD Output Input
RD Input Output
RTS Output Input
CTS Input Output
DSR Input Output
DCD * Output
DTR Output Input

*when in the DTE mode DCD is not supported.
Remote Test Switch - performs diagnostics

Indicators: TD, RD, Control In 1, Control Out 1, Control In 2, Control Out 2, Line Error, Fiber Signal Valid, Remote Test and Power
Size: 5"W (127mm) x 1.5"H (12.7mm) x 5.3"D (134.6mm)
Environment: 0° to 50° C, 5% - 95% RH


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Bomara Associates Phone: 800.5BOMARA (800.526.6272) Phone: 978.452.2299 Fax: 978.452.1169 3 Courthouse Lane, Chelmsford, MA 01824 USA
email: bobr@bomara.com      web: www.bomara.com
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