Optical Systems Design OSD136 User manual

OPERATOR MANUAL
OSD136
SYNCHRONOUS FIBER
OPTIC RS232 MODEM

OPTICAL SYSTEMS DESIGN
DOC ID: 10100110
OSD136 OPERATOR MANUAL
Page 2 of 16

OPTICAL SYSTEMS DESIGN
DOC ID: 10100110
OSD136 OPERATOR MANUAL
Page 3 of 16
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 ......................................................................................... 9
2.1 INTRODUCTION........................................................................................................................ 9
2.2 INSTALLATION ......................................................................................................................... 9
2.2.1 WARNING AND PRECAUTIONS ........................................................................................ 9
2.2.2 PACKAGING...................................................................................................................... 10
2.2.3 POWER SUPPLY CONNECTIONS.................................................................................... 11
2.2.4 OTHER CONNECTIONS ................................................................................................... 12
2.2.5 CONTROLS ........................................................................................................................ 12
2.2.6 INDICATORS ..................................................................................................................... 12
2.3 OPERATION ............................................................................................................................. 13
2.3.1 BLOCK DIAGRAM............................................................................................................. 13
3. MAINTENANCE.......................................................................................................................... 14
3.1 INTRODUCTION...................................................................................................................... 14
3.2 EXTERNAL INSPECTION ....................................................................................................... 14
3.3 ROUTINE MAINTENANCE..................................................................................................... 14
4. WARRANTY ................................................................................................................................ 15
4.1 WARRANTY PERIOD .............................................................................................................. 15
4.2 ALL REPAIRS ........................................................................................................................... 15
4.2.1 WARRANTY REPAIRS........................................................................................................ 15
4.2.2 OUT-OF-WARRANTY REPAIRS........................................................................................ 15
4.2.3 SITE REPAIRS.................................................................................................................... 15
4.3 EXCLUSIONS ........................................................................................................................... 15
FIGURE 1: TYPICAL CONFIGURATION ............................................................................................ 5
FIGURE 2: D CONNECTOR PIN ASSIGNMENTS .............................................................................. 8
FIGURE 3: D CONNECTOR PINOUT CONFIGURATION. ................................................................ 8
FIGURE 4: DIMENSIONS .................................................................................................................... 10
FIGURE 5: POWER SOCKET CONNECTION DIAGRAM................................................................ 11
FIGURE 6: OSD136C WITH 3 PIN POWER SUPPLY CONNECTION............................................. 11
FIGURE 7: OSD136C WITH 2 PIN POWER SUPPLY CONNECTION............................................. 11
FIGURE 8: BLOCK DIAGRAM ........................................................................................................... 13
TABLE 1: PRODUCT OPTIONS............................................................................................................ 5
TABLE 2: TECHNICAL SPECIFICATIONS ......................................................................................... 6

OPTICAL SYSTEMS DESIGN
DOC ID: 10100110
OSD136 OPERATOR MANUAL
Page 4 of 16
1. TECHNICAL SUMMARY
1.1 BRIEF DESCRIPTION
1.1.1 OVERVIEW
The OSD136 is a small, self contained modem which can provide full duplex synchronous or
asynchronous RS232 communications over duplex optical fiber cable. It incorporates a single chip
multiplexer which handles clock and data signals and two handshake lines, all operating at a rate of up
to 20kbps. In synchronous mode the OSD136 operates with an external clock.
The unit may be used as an asynchronous modem for data rates between DC and 20kbps. It operates
with all commonly available multimode fibers over distances of up to at least 5km.
Applications include any RS232 communications link which requires synchronous operation and/or
handshake signals where distance, electrical noise and/or security considerations render conventional
twisted pair RS232 links impractical.
While normally used as an RS232 modem the OSD136 can also be employed as a four channel
multiplexer, with all channels operating from DC to 20kbps.
The OSD136 is optionally available to operate over singlemode fiber. This model is designated the
OSD136L.
1.1.2 APPLICATIONS
Secure communications.
Links requiring transfer of control lines.
Hazardous environments.
Long distance synchronous or
asynchronous RS232 links.
Terminal cluster to computer.
1.1.3 FEATURES AND BENEFITS
Full Duplex synchronous or asynchronous
data transmission at up to 20kbps.
May be used as a 4 channel RS232
multiplexer.
Safe transmission in hazardous
environments.
More secure than copper cables.
Small EMI/RFI resistant metal enclosure
that plugs onto the back of a computer or
terminal.
Small size, low cost, robust and reliable.
No user adjustments required.

OPTICAL SYSTEMS DESIGN
DOC ID: 10100110
OSD136 OPERATOR MANUAL
Page 5 of 16
1.2 TYPICAL CONFIGURATION
FIGURE 1 below shows a typical OSD136 link set up.
1 or 2 fibers
OSD136
Asynchronous
RS 232 x 4ch
OSD136
Asynchronous
RS 232 x 4ch
(a)
1 or 2 fibers
OSD136
Synchronous /
Asynchronous
RS 232 x 1ch
OSD136
Synchronous /
Asynchronous
RS 232 x 1ch
(b)
FIGURE 1: TYPICAL CONFIGURATION
(a) Multiplexed Asynchronous Configuration, (b) Synchronous Configuration
1.3 PRODUCT OPTIONS
There are various options available for the OSD136. These options are identified in TABLE 1 below:
TABLE 1: PRODUCT OPTIONS
ITEM DESCRIPTION
OSD136 Fiber Optic RS32 Transceiver, small module
OSD136L Singlemode Fiber Optic RS232 Transceiver, compact module
OSD136PP Plug pack for the OSD136
OSD136MB Wall mounting bracket for the small module
Option C Wall mountable module (for 1-fiber versions only)
Option /100 Card Version
Option WA Singlemode single fiber operation (Tx @ 1310nm, Rx @ 1550nm) (for option LC)
Option WB Singlemode single fiber operation (Tx @ 1550nm, Rx @1310nm) (for option LC)
Option WA Multimode single fiber operation (Tx @ 850nm, Rx @ 1310nm) (for option C)
Option WB Multimode single fiber operation (Tx @1310nm, Rx @ 850nm) (for option C)

OPTICAL SYSTEMS DESIGN
DOC ID: 10100110
OSD136 OPERATOR MANUAL
Page 6 of 16
1.4 TECHNICAL SPECIFICATIONS
TABLE 2 below provides the Technical Specifications for the OSD136.
TABLE 2: TECHNICAL SPECIFICATIONS
SPECIFICATION PERFORMANCE
Data Rate DC to 20kbps asynchronous or synchronous
Optical Transmit Power -20 to -14dBm into 62.5/125 multimode fiber
-20 to -13dBm into singlemode fiber (OSD136L variants only)
Receiver Sensitivity < -43dBm
< -42dBm for WA or WB single fiber variants
Optical Link Budget
>23dB @ 850nm for standard OSD136 (>6km of multimode fiber)
>23dB @ 1310nm for OSD136L (>60km of singlemode fiber)
>22dB for WA or WB single fiber variants
Receiver Saturation > -10dBm
Optical Transmitter Wavelength
850nm for OSD136 and OSD136C.WA
1310nm for OSD136L, OSD136LC.WA and OSD136C.WB
1550nm for the OSD136LC.WB
Optical Connector ST standard
Signal Loss Indicator LED is green with good signal and red with too low an optical
signal
Electrical Connector 25 pin male D-subminature
Power Connector 1.3mm socket on side of case2-way terminal block on module
Power
+8V
DC
to +13V
DC
@ 150mA supplied by external power supply or
via pin 9 of the D connector
OR
+4.75V
DC
to +5.25V
DC
supplied via pin 12 of the D connector
Dimensions (mm):
Small Module
Wall Mount Module
15H x 44W x 80D (excluding optical connectors)
25H x 104W x 144D
Operating temperature -20 to +75°C
Relative humidity 0 to 95% non-condensing
10213607

OPTICAL SYSTEMS DESIGN
DOC ID: 10100110
OSD136 OPERATOR MANUAL
Page 7 of 16
1.5 PIN ASSIGNMENTS
FIGURE 2 below identifies the pin assignments of the 25 pin D connector of the OSD136. The two
male D connectors represent two OSD136 modems that would be joined with a duplex fiber cable.
Shielded cables are recommended for all data wiring.
The + 8V to +13V external power shown is where the 1.3mm power plug would be attached if an
external OSD136PP power supply is used.
FIGURE 2 A) SYNCHRONOUS DATA TRANSFER
2
3
15
17
24
4
5
8
20
6
1
7
9
21
12
2
3
15
17
24
4
5
8
20
6
1
21
7
9
12
Tx DATA
Rx DATA
Tx CLK
Rx CLK
DTE Tx CLK
RTS
CTS
DCD
DTR
DSR
CASE GND
SIG QUAL
SIG GND
+9V POWER
+5V POWER
EXTERNAL
POWER 8-13V
Tx DATA
Rx DATA
Tx CLK
Rx CLK
DTE Tx CLK
RTS
CTS
DCD
DTR
DSR
CASE GND
SIG QUAL
SIG GND
+9V POWER
+5V POWER
EXTERNAL
POWER 8-13V
UP TO
SEVERAL KM
OF OPTICAL
CABLE
MALE D CONNECTOR MALE D CONNECTOR

OPTICAL SYSTEMS DESIGN
DOC ID: 10100110
OSD136 OPERATOR MANUAL
Page 8 of 16
FIGURE 2 B) FOUR CHANNELS ASYNCHRONOUS DATA TRANSFER
FIGURE 2: D CONNECTOR PIN ASSIGNMENTS
FIGURE 3: D CONNECTOR PINOUT CONFIGURATION.
13
1
25
14
2
3
15
17
24
4
5
8
20
6
1
7
9
21
12
2
3
15
17
24
4
5
8
20
6
1
21
7
9
12
Tx CH1 DATA
Rx CH1 DATA
Rx CH4 DATA
Tx CH4 DATA
Tx CH2 DATA
Rx CH2 DATA
Tx CH3 DATA
Rx CH3 DATA
CASE GND
SIG QUAL
SIG GND
+9V POWER
+5V POWER
EXTERNAL
POWER 8-13V
Tx CH1 DATA
Rx CH1 DATA
Rx CH4 DATA
Tx CH4 DATA
Tx CH2 DATA
Rx CH2 DATA
Tx CH3 DATA
Rx CH3 DATA
CASE GND
SIG QUAL
SIG GND
+9V POWER
+5V POWER
EXTERNAL
POWER 8-13V
UP TO
SEVERAL KM
OF OPTICAL
CABLE
MALE D CONNECTOR MALE D CONNECTOR

OPTICAL SYSTEMS DESIGN
DOC ID: 10100110
OSD136 OPERATOR MANUAL
Page 9 of 16
2. INSTALLATION AND OPERATION
2.1 INTRODUCTION
This section outlines the methods required to install and operate the OSD136 successfully. It 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 before operation. If damage is present, return
the unit with the packing to the supplier immediately.
2.2 INSTALLATION
2.2.1 WARNING AND PRECAUTIONS
▲ ELECTROMAGNETIC COMPATIBILITY
This is a Class B product.
▲ OPTICAL OUTPUT OPERATION
WARNING: Laser Safety: Class 1 Laser Product per IEC/EN 60825-1:2014 standard.
Class 1
The OSD136 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.

OPTICAL SYSTEMS DESIGN
DOC ID: 10100110
OSD136 OPERATOR MANUAL
Page 10 of 16
2.2.2 PACKAGING
OSD136 is available in three different packages. All packages are shown in FIGURE 4. Dimensions in
the pictures are in mm.
55
44 15 12.5
93
6.3
a) small module version
b) module version
c) 5T card version
FIGURE 4: DIMENSIONS
25
100
210
DETAIL ‘A’
104
70
116
DETAIL 'A'
4.2
6.6
8.5
128
104

OPTICAL SYSTEMS DESIGN
DOC ID: 10100110
OSD136 OPERATOR MANUAL
Page 11 of 16
2.2.3 POWER SUPPLY CONNECTIONS
SMALL MODULE VERSION
Three options are available for powering the unit.
External DC power in the range +8V
DC
to +13V
DC
may be connected via the 1.3mm concentric
power socket located on the side. The internal pin is the positive connection and the outer
connection is Ground (see Figure 5). The external power source can be a plug pack type unit such
as the OSD136PP.
+8V
DC
to +13V
DC
may be supplied via pin 9 of the 25 pin D connector.
+4.75V
DC
to +5.25V
DC
may be supplied via pin 12 of the D connector.
In all cases the most negative side of the supply is connected to signal ground (pin 7 of the 25 pin D
connector).
FIGURE 5: POWER SOCKET CONNECTION DIAGRAM
MODULE VERSION
For OSD136 module version there are two types of the power supply connectors used.
The first version is the three pin connector shown on FIGURE 6 where pins 2 and 3 are ground
connections and pin 1 is +V
DC
(+8V to +13V ).
FIGURE 6: OSD136C WITH 3 PIN POWER SUPPLY CONNECTION
The second version is with a two pin connector shown on FIGURE 7. Pin 2 is the ground connection
and pin 1 is +V
DC
(+8V to +13V).
FIGURE 7: OSD136C WITH 2 PIN POWER SUPPLY CONNECTION
Gnd
Gnd +VGnd +V
+V
D Connector External Power
Pins
3 2 1
D Connector External Power
Pins
2 1

OPTICAL SYSTEMS DESIGN
DOC ID: 10100110
OSD136 OPERATOR MANUAL
Page 12 of 16
CARD VERSION
The OSD136 card version is powered from the OSD370 or OSD350 chassis. DC power is connected
via a DB9 connector. The card version of the OSD136 should be fixed into the OSD370 (or OSD350)
chassis using the captivated screws. The card can be plugged in or out of the chassis with power on or
off.
2.2.4 OTHER CONNECTIONS
The RS232 signals are connected to or from external equipment by the 25 pin D connector according to
FIGURE 2.
Note the Signal Quality signal is at TTL levels and is normally High (>3.5V) with good optical input
and Low (<0.5V) when the optical input is too low.
The optical fiber must be terminated by the appropriate optical connector. Before connection, inspect
the end of the connectors to ensure that no dust or dirt is present as it could contaminate the modem
connector and result in poor performance.
If it is necessary to clean the cable connectors use isopropyl alcohol and lint-free tissue to remove
contamination.
2.2.5 CONTROLS
The OSD136 has no controls.
2.2.6 INDICATORS
The OSD136 has a bi-colour LED indicator located between the optical connectors. The LED colour
conditions are as follows;
•RED - Received optical power level too low for reliable operation or no fiber link established.
•GREEN – Fiber link established and received optical signal from the transmitted signal.

OPTICAL SYSTEMS DESIGN
DOC ID: 10100110
OSD136 OPERATOR MANUAL
Page 13 of 16
2.3 OPERATION
2.3.1 BLOCK DIAGRAM
FIGURE 8 below is a simple block diagram of the OSD136.
FIGURE 8: BLOCK DIAGRAM
D
CONNECTOR
+9 TO +12 V
QUALITY
SIGNAL
DTR
RTS
TX CLOCK
TX DATA
DSR
CTS
RX CLOCK
RX DATA
INPUT
EXTERNAL POWER
+9 TO
+12V
+5V
INDICATOR
BIT
ERROR
DIODE
PHOTO
LED
DEMUX
MUX/
RECEIVER
LINE
RS232
DRIVER
LINE
RS232
+5V
-5V
-5V
DC/DC
CONVERTOR
+5V
REGULATOR

OPTICAL SYSTEMS DESIGN
DOC ID: 10100110
OSD136 OPERATOR MANUAL
Page 14 of 16
3. MAINTENANCE
3.1 INTRODUCTION
The following section outlines the fault-finding procedure for the OSD136 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:
Check that the correct power source (OSD136PP) is connected to the power socket.
Check that the data signals are connected to the modem correctly and that the distant OSD136
modem has been terminated correctly to any external equipment.
Inspect the optical connectors for any contamination and clean using isopropyl alcohol and a lint
free tissue if any contamination is detected.
Check that any external termination resistors are connected if the system configuration requires
them in.
3.3 ROUTINE MAINTENANCE
There is no routine maintenance required with the OSD136.

OPTICAL SYSTEMS DESIGN
DOC ID: 10100110
OSD136 OPERATOR MANUAL
Page 15 of 16
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.

OPTICAL SYSTEMS DESIGN
DOC ID: 10100110
OSD136 OPERATOR MANUAL
Page 16 of 16
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