Optical Systems Design OSD139HS User manual

OPERATOR MANUAL
OSD139HS
HIGH SPEED ASYNCHRONOUS
FIBER OPTIC RS232 MODEM

OPTICAL SYSTEMS DESIGN
DOC ID: 10117202
OSD139HS OPERATOR MANUAL
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OPTICAL SYSTEMS DESIGN
DOC ID: 10117202
OSD139HS OPERATOR MANUAL
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INDEX
1. TECHNICAL SUMMARY............................................................................................................ 4
1.1 BRIEF DESCRIPTION ............................................................................................................ 4
1.1.1 OVERVIEW ...................................................................................................................... 4
1.1.2 APPLICATIONS ............................................................................................................... 4
1.1.3 FEATURES AND BENEFITS ........................................................................................... 4
1.2 TYPICAL CONFIGURATION................................................................................................ 5
1.3 PRODUCT OPTIONS.............................................................................................................. 5
1.4 TECHNICAL SPECIFICATION S ............................................................................................ 6
1.5 PIN ASSIGNMENTS ............................................................................................................... 7
2. INSTALLATION AND OPERATION ......................................................................................... 8
2.1 INTRODUCTION.................................................................................................................... 8
2.2 INSTALLATION ..................................................................................................................... 8
2.2.1 WARNING AND PRECAUTION ...................................................................................... 8
2.2.2 PACKAGING.................................................................................................................... 9
2.2.3 POWER SUPPLY CONNECTIONS.................................................................................. 9
2.2.4 OTHER CONNECTIONS ................................................................................................. 9
2.3 OPERATION ......................................................................................................................... 10
2.3.1 CONTROLS .................................................................................................................... 10
2.3.2 BLOCK DIAGRAM......................................................................................................... 11
3. MAINTENANCE.......................................................................................................................... 12
3.1 INTRODUCTION.................................................................................................................. 12
3.2 EXTERNAL INSPECTION ................................................................................................... 12
3.3 ROUTINE MAINTENANCE................................................................................................. 12
4. WARRANTY ................................................................................................................................ 13
4.1 WARRANTY PERIOD .......................................................................................................... 13
4.2 ALL REPAIRS ....................................................................................................................... 13
4.2.1 WARRANTY REPAIRS.................................................................................................... 13
4.2.2 OUT-OF-WARRANTY REPAIRS.................................................................................... 13
4.2.3 SITE REPAIRS................................................................................................................ 13
4.3 EXCLUSIONS ....................................................................................................................... 13
FIGURE 1: TYPICAL CONFIGURATION ............................................................................................ 5
FIGURE 2: D CONNECTOR PINOUT CONFIGURATION. ................................................................ 7
FIGURE 3: DIMENSIONS ...................................................................................................................... 9
FIGURE 4: POWER SOCKET CONNECTION DIAGRAM.................................................................. 9
FIGURE 5: DTE/DCE CONTROL........................................................................................................ 10
FIGURE 6: OSD139 BLOCK DIAGRAM ............................................................................................ 11
TABLE 1: PRODUCTS AND OPTIONS................................................................................................ 5
TABLE 2: TECHNICAL SPECIFICATIONS ......................................................................................... 6
TABLE 3: PIN ASSIGNMENTS FOR DTE AND DCE MODE ............................................................ 7

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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
DC
to +12V
DC
may be fed to the unit via Pin 9 of the 25 Pin D connector or
via the 1.3mm concentric power socket mounted on the side of the OSD139HS.
1.1.2 APPLICATIONS
Secure communications.
Hazardous environments.
Factory automation.
Long distance asynchronous RS232 links.
Data transmission through electrically
noisy environments.
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.
Full duplex asynchronous data
transmission at up to 120kbps.
Safe transmission in hazardous
environments.
Available only with a female D connector.

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1.2 TYPICAL CONFIGURATION
Figure 1 below shows a typical set-up for two OSD139HS’s that may be used together.
FIGURE 1: TYPICAL CONFIGURATION
1.3 PRODUCT OPTIONS
There are various options available for the OSD139HS as indicated below in Table 1.
TABLE 1: PRODUCTS AND OPTIONS
ITEM DESCRIPTION
OSD139HS Multimode asynchronous 120KBPS RS232 modem (FEMALE CONNECTOR)
OSD139HSL Singlemode asynchronous 120KBPS RS232 modem (FEMALE CONNECTOR)
OSD139APP PLUG PACK FOR THE OSD139HS
OSD139MB MOUNTING BRACKET FOR THE OSD139HS
OSD139HS
Tx
Rx
OSD139HS
Rx
Tx
RS232
Data
RS232
Data
Fiber Optic Cable

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1.4 TECHNICAL SPECIFICATIONS
Table 2 below provides the Technical Specifications for the OSD139HS.
TABLE 2: TECHNICAL SPECIFICATIONS
SPECIFICATION PERFORMANCE
Data Supported RS232 signals (asynchronous)
Data Rate DC to 120kbps asynchronous
Pulse Distortion <±3µS over full dynamic range
Transmit Optical Power –25 to -19dBm peak into multimode fiber (OSD139HS only)
–25 to -15dBm peak into singlemode fiber (OSD139HSL only)
Receiver Sensitivity < - 44dBm peak for 10
–9
Bit Error Rate
Optical Link Budget > 19dB at 850nm (>5km of multimode fiber) ( OSD139HS)
> 19dB at 1310nm (>40km of singlemode fiber ) ( OSD139HSL)
Receiver Saturation >- 15dBm peak
Optical Wavelength 850nm for OSD139HS and 1310nm for OSD139HSL
Optical Connector ST
Electrical Connector 25 pin Female D subminiature
Electrical Output > ±3V from 600Ωsource
DTE/DCE modes Switch selectable
Powering + 6V to + 12V power can be supplied via Pin 9 or via the power
connector. Current is <10mA
Power Connector 1.3mm socket on side of case
Enclosure Seam welded metal case
Dimensions (mm) 15H X 44W X 80D (excluding connectors)
Operating temperature -20 to +75°C
Relative humidity 0 to 95% non-condensing

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1.5 PIN ASSIGNMENTS
Table 3 and Figure 2 below identifies the pin assignments of the 25 Pin D connector on the OSD139HS.
Shielded cables are recommended for all data wiring.
TABLE 3: PIN ASSIGNMENTS FOR DTE AND DCE MODE
PIN NAME DTE FUNCTION DCE FUNCTION
Pin 1 Case ground AC coupled to signal ground
Pin 2 Transmit data Modem accepts data Modem outputs data
Pin 3 Receive data Modem outputs data Modem accepts data
Pin 4 Request to send Connected to Pin 5
Pin 5 Clear to send Connected to Pin 4
Pin 6 Data set ready Connected to Pin 20
Pin 7 Signal ground 0V ground
Pin 8 Received line
signal detect Connected to Pin 20
Pin 9 Power External +6V
DC
to +12V
DC
power may be fed to the modem via this
Pin. Use Pin 7 for 0V ground.
Pin 20 Data terminal
ready Connected to Pin 6
FIGURE 2: FEMALE D CONNECTOR PINOUT CONFIGURATION.
1
13
14
25

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2. INSTALLATION AND OPERATION
2.1 INTRODUCTION
This section outlines the methods required to install and operate the OSD139HS successfully. This
information should be studied carefully if damage to the equipment or poor results are to be avoided.
This equipment has been fully tested prior to dispatch and is ready for immediate operation. However, it
is advisable to check for external transportation damage prior to operation. If damage is detectable,
return the unit and the packaging to the supplier.
2.2 INSTALLATION
2.2.1 WARNING AND PRECAUTION
▲ ELECTROMAGNETIC COMPATIBILITY
This is a Class B product.
▲ OPTICAL OUTPUT OPERATION
WARNING: Laser Safety: Class 1 Laser Product per IEC/EN 60825-1:20011 standard.
Class 1
The OSD139HS is a Class 1 laser product.
PRECAUTIONS
▲ All service personnel should be provided training as to the hazards of direct viewing of laser
radiation and of the precautionary measures during servicing of equipment
▲ Areas where laser products are installed should be restricted in access to trained service
personnel only and appropriate warning signs posted in the work area.
▲ All laser apertures should be covered by protective covers when not connected to optical
fibers. Never leave outputs uncovered.
▲ Laser equipment should be positioned above or below eye level where possible. Apertures
should be positioned away from personnel.
▲ Protective eyewear should be worn in the vicinity of laser equipment.

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2.2.2 PACKAGING
The case of the OSD139HS is made from metal, and is designed to be placed on a bench or to be
mounted directly on the host equipment’s 25 Pin D connector. Figure 3 below, provides the dimensions
of the OSD139HS.
OSD can provide a mounting bracket (OSD139MB) as an accessory if required.
FIGURE 3: DIMENSIONS
2.2.3 POWER SUPPLY CONNECTIONS
+6V
DC
to +12V
DC
power may be supplied to the unit via Pin 9 of the 25 Pin D connector if non-
standard RS232 drivers are employed in the host equipment or, alternatively, via the external power
socket, making use of the OSD139APP. The internal pin is the positive connection and the outer
connection is Ground (see Figure 4).
.
FIGURE 4: POWER SOCKET CONNECTION DIAGRAM
2.2.4 OTHER CONNECTIONS
44
55
15
80
13
All Dimensions
are in mm
Gnd +VGnd +V
Gnd +V

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The RS232 signals are connected to or from the external equipment as required via the 25 Pin D
connector of the OSD139HS. Table 3 identifies the connections for the OSD139HS configured in both
the DTE and DCE modes.
As previously stated +6V
DC
to +12V
DC
power may be fed to the unit via Pin 9 of the 25 Pin D
connector.
The optical fiber should be terminated with the appropriate optical connecters. Before connection,
inspect the end of the optical connecters to ensure that no dust or dirt is present as it could contaminate
the modem connecter and result in poor and degraded performance.
If it is necessary to clean the cable connecters, use isopropyl alcohol with a lint free tissue to remove
any contamination.
2.3 OPERATION
2.3.1 CONTROLS
The OSD139HS has only one control: the DTE/DCE switch located between the optical connectors.
This switch changes the OSD139HS between DTE and DCE modes.
FIGURE 5: DTE/DCE CONTROL
When the units are connected to a DTE host, the transmitting signal is on Pin 2 of the connector (data
into the modem) and the received signal is output by the modem on Pin 3 (data out from the modem).
The converse applies to a DCE host.
The pin differences between these two modes are detailed in section 1.5 PIN ASSIGNMENTS (page 7)
DTE DCE
DTE/DCE Switch

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2.3.2 BLOCK DIAGRAM
Figure 6 below is a simple block diagram of the OSD139HS.
FIGURE 6: OSD139HS BLOCK DIAGRAM
+
+
V+
V-
DC-DC Converter
1
Case Ground
1K
240
V-
V+
V+
600
DTE/DCE
Switch
Optical Transmitter
Optical Receiver
2
3
4
5
6
7
8
9
20

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3. MAINTENANCE
3.1 INTRODUCTION
The following section outlines the fault-finding procedure for the OSD139HS modem. Please take note
of the following:
Personnel without appropriate training should not attempt any maintenance except that outlined
below.
If further maintenance is attempted you are warned that every care should be taken to ensure that
internal measurements made while the equipment is operational are taken carefully as some
components within the unit are expensive and may be damaged by failure of any portion of their
support circuitry.
Some components within the unit are electrostatic sensitive and ESD precautions should be taken
when performing maintenance upon the unit.
3.2 EXTERNAL INSPECTION
Visually check for the following:
Ensure that the RS232 signal is connected to the modem correctly and that the distant OSD139HS
modem has been terminated correctly to any external equipment.
Inspect the optical connectors for any contamination and clean using acetone and a lint free tissue if
any contamination is detected.
Ensure that the DTE/DCE switch is set for the correct mode of operation.
3.3 ROUTINE MAINTENANCE
There is no routine maintenance required with the OSD139HS.

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4. WARRANTY
Thank you for purchasing equipment designed, manufactured and serviced by Optical Systems Design
(OSD). OSD warrants that at the time of shipment, its products are free from defects in material and
workmanship and conforms to specifications. Our Warranty conditions are outlined below:
4.1 WARRANTY PERIOD
For warranty period, please call your local OSD distributor.
4.2 ALL REPAIRS
Optical Systems Design reserves the right to repair or replace faulty modules/units. Please obtain a
“Return Material Authorisation” number form and number before returning goods.
Goods must be returned to Optical Systems Design, Warriewood or its nominated authorised
representative, for all repairs in adequate packing material.
4.2.1 WARRANTY REPAIRS
Return shipments to OSD shall be at customer's expense and freight back to the customer will be at
OSD expense.
4.2.2 OUT-OF-WARRANTY REPAIRS
OSD reserves the right to repair or replace any faulty goods. Freight costs and insurance for both
journeys are met by the user. All equipment repaired by OSD will have a 3 Month Warranty from the
date of dispatch.
4.2.3 SITE REPAIRS
By agreement site repairs may be undertaken for which out of pocket, hotel and travel expenses will be
charged.
4.3 EXCLUSIONS
This warranty does not apply to defects caused by unauthorised modifications, misuse, abuse or
transport damage to the equipment. All modifications to OSD’s standard product will need written
authorisation and will be charged at normal repair rates. All modifications are to be carried out by OSD
Technicians. Warranty will lapse if unauthorised removal and/or tampering with serial number and/or
repair labels occurs.

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OSD139HS OPERATOR MANUAL
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OPTICAL SYSTEMS DESIGN
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Optical Systems Design Pty. Ltd.
7/1 Vuko Pl. Warriewood 2102
P.O. Box 891 Mona Vale
N.S.W. Australia 2103
Telephone: [phone]
Facsimile: [phone]
Email: [email protected]
Web Site: www.osd.com.au
OPTIC L
SYSTEMS
DESIGN
PTY LTD A.B.N. 83 003 020 504
Printed in Australia