Technical Summary; Brief Description; Overview; Applications - Optical Systems Design OSD139HS Operator's Manual

1. TECHNICAL SUMMARY

1.1 BRIEF DESCRIPTION

1.1.1 OVERVIEW

The OSD139HS is a small, high performance fiber optic modem capable of linking asynchronous
RS232 ports (eg: computers, terminals, test equipment etc:) over distances of several kilometres at
speeds ranging from DC to 120Kbps.
The OSD139HS is only available with a female 25 Pin D connector. The unit is switchable between
DTE/DCE mode (ie: Pin 2 or Pin 3 connects to the optical transmit section of the unit). This is
selectable by a toggle switch mounted between the optical connectors.
Both multimode (OSD139HS) and singlemode (OSD139HSL) versions are powered from a power
source in the range of +6V
via the 1.3mm concentric power socket mounted on the side of the OSD139HS.

1.1.2 APPLICATIONS

Secure communications.
Hazardous environments.
Factory automation.

1.1.3 FEATURES AND BENEFITS

Interconnects one RS232/V24 data
channel over at least 3km of multimode
fiber with the OSD139HS and more than
20km of singlemode fiber with the
OSD139HSL.
Directly plugs into host's RS232 D
connector.
Complete end to end isolation.
DTE or DCE switchable.
No user adjustments required.
More secure than copper cables.
Small size, low cost, robust and reliable.
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OSD139HS OPERATOR MANUAL
OPTICAL SYSTEMS DESIGN
to +12V may be fed to the unit via Pin 9 of the 25 Pin D connector or
DC DC
Long distance asynchronous RS232 links.
Data transmission through electrically
noisy environments.
Full duplex asynchronous data
transmission at up to 120kbps.
Safe transmission in hazardous
environments.
Available only with a female D connector.
DOC ID: 10117202