Optical Systems Design OSD8826 Series User manual

OPERATOR MANUAL
OSD8826 SERIES
DIGITAL VIDEO AND DATA
FIBER OPTIC TRANSMISSION SYSTEM

OPTICAL SYSTEMS DESIGN
DOC ID: 10110306
OSD8826 OPERATOR MANUAL
PAGE
3
INDEX 1
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 PRODUCTS AND OPTIONS .................................................................................................. 6
1.4 TECHNICAL SPECIFICATIONS ........................................................................................... 7
2 INSTALLATION AND OPERATION..................................................................................... 8
2.1 INTRODUCTION .................................................................................................................... 8
2.2 INSTALLATION ..................................................................................................................... 8
2.2.1 WARNING AND PRECAUTIONS..................................................................................... 8
2.2.2 OSD8826 DRAWINGS AND DIMMENSIONS ................................................................. 9
2.3 PIN ASSIGNMENTS AND CONNECTIONS....................................................................... 10
2.4 D ATA M ODE S WITCH S ETTINGS .............................................................................................. 12
2.5 C ONNECTIONS ......................................................................................................................... 13
2.5.1 POWER SUPPLY CONNECTIONS ................................................................................. 13
2.5.2 BASIC CONNECTIONS ................................................................................................... 14
2.5.3 CONTACT CLOSURE CONNECTIONS ......................................................................... 14
2.6 OSD8826 OPERATION......................................................................................................... 15
2.6.1 OSD8826T AND OSD8826R OPERATION ..................................................................... 15
2.6.2 OSD8826T AND OSD8826R INDICATORS.................................................................... 15
3 MAINTENANCE...................................................................................................................... 16
3.1 INTRODUCTION .................................................................................................................. 16
3.2 EXTERNAL INSPECTION ................................................................................................... 16
3.3 ROUTINE MAINTENANCE................................................................................................. 16
4 WARRANTY ............................................................................................................................ 17
4.1 WARRANTY PERIOD.......................................................................................................... 17
4.2 REPAIRS................................................................................................................................ 17
4.2.1 WARRANTY REPAIRS.................................................................................................... 17
4.2.2 OUT-OF-WARRANTY REPAIRS.................................................................................... 17
4.2.3 SITE REPAIRS .................................................................................................................. 17
4.2.4 EXCLUSIONS ................................................................................................................... 17
FIGURE 1: OSD8826 TYPICAL CONFIGURATIONS........................................................................................... 5
FIGURE 2: OSD8826 MOUNTING DIMENSIONS ................................................................................................ 9
FIGURE 3: DATA CONNECTOR PINOUTS ........................................................................................................ 11
FIGURE 4: DATA CABLING CONNECTIONS ................................................................................................... 11
FIGURE 5: DATA SWITCH DIAGRAMS............................................................................................................. 12
FIGURE 6: CARD POWER SUPPLY PINOUT..................................................................................................... 13
FIGURE 7: OSD8826C POWER SUPPLY CONNECTIONS ................................................................................ 13
FIGURE 8: OSD8826T CONTACT CLOSURE INPUT ........................................................................................ 14
FIGURE 9: OSD8826R CONTACT CLOSURE OUTPUT .................................................................................... 14
FIGURE 10: OSD8826TC AND OSD8826RC LED INDICATORS...................................................................... 15
TABLE 1: PRODUCTS AND OPTIONS.................................................................................................................. 6
TABLE 2: TECHNICAL SPECIFICATIONS........................................................................................................... 7
TABLE 3: PIN ASSIGNMENT............................................................................................................................... 10
TABLE 4: DATA MODE SWITCH SETTINGS .................................................................................................... 12
TABLE 5: DATA SWITCH EXAMPLES .............................................................................................................. 12
TABLE 6: CARD POWER SUPPLY PINOUT ...................................................................................................... 13
TABLE 7: DC OR AC POWER CONNECTION ................................................................................................... 13
TABLE 8: OSD8826 INDICATOR FUNCTION.................................................................................................... 15

OPTICAL SYSTEMS DESIGN
DOC ID: 10110306
OSD8826 OPERATOR MANUAL
PAGE
4
1TECHNICAL SUMMARY
1.1 BRIEF DESCRIPTION
1.1.1 OVERVIEW
The OSD8826 series is a high-quality fiber optic digital video and data transmission system. The
system consists of the OSD8826T and the OSD8826R, which are designed to be used as a pair, and
provide one-way transmission of PAL, NTSC or SECAM video, plus full-duplex transmission of one
data channel and forward path transmission of a contact closure.
The OSD8826T accepts one analog composite video input signal along with one digital data input
signal. The video signal is converted to digital with 10-bit resolution so as to preserve the quality of the
input signals. The resulting digital signal is multiplexed and transmitted as a digital bit-stream through
the fiber. The OSD8826T also includes an optical receiver section that decodes the digital signal
transmitted by the OSD8826R, to provide data output signals. Data can be TTL, RS232, RS485 or
RS422 31kHz Manchester or Bi-phase. The OSD8826T receiver provides adjustment free operation
over the full optical range of the unit.
The OSD8826R incorporates a high performance optical digital receiver for incoming video and data
signals, and a transmitter that outputs a digital optical signal consisting of one data channel. The unit
provides a constant video output level which is independent of link loss, and data section of the
OSD8826R is also adjustment free over all link lengths.
The OSD8826T and OSD8826R are available in two physical configurations: card or module. The
OSD8826R2 is a two-channel receiver card which accepts two independent OSD8826T communication
links. The card versions are designed to fit the 3RU-high 19” OSD370 or OSD350 chassis, which
allows multiple OSD card products to be conveniently powered from and located in the one chassis.
The module case versions are intended for isolated use and require an external power source.
The OSD8826 system can be used with any standard singlemode or multimode optical fiber over a
single fiber for transmission and reception.
1.1.2 APPLICATIONS
▲ High quality CCTV networks
requiring full duplex or reverse data
transmission between cameras and
their control centre
▲ Transportation communication
systems
▲ Safe city projects
1.1.3 FEATURES AND BENEFITS
▲ One way optic transmission of PAL,
NTSC or SECAM video plus one
duplex data channel and one forward
path transmission of a contact closure.
▲ Broadcast quality 10 bit video
maintained over all link lengths.
▲ Video bandwidth of 6MHz
▲ Remote control of Pan, Tilt and Zoom
for video surveillance
▲ Single fiber operation
▲ Receiver available either as a single
channel card (OSD8826R) or module
(OSD8826RC) or as a dual channel
card (OSD8826R2)
▲ Operating range of at least 5km on
multimode and 40km on singlemode
fiber, with longer distances possible
using optional optical devices
▲ Standard operation using multimode
or singlemode fiber: no need to
specify fiber type

OPTICAL SYSTEMS DESIGN
DOC ID: 10110306
OSD8826 OPERATOR MANUAL
PAGE
5
1.2 TYPICAL CONFIGURATION
Figure 1 below indicates the typical set-up for an OSD8826 system.
FIGURE 1: OSD8826 TYPICAL CONFIGURATIONS
The OSD8826T and OSD8826R pair can provide one forward video transmission and full duplex data
transmission between camera (transmitter) and monitoring site (receiver).
Fiber Interface
To
Camera
OSD8826T
Tx
Rx
From
Camera
Video
In
Data
I/O
CC
CC
OSD8826R
Tx
Rx
Data
I/O
Video
Out
To monitor /
switcher etc
From
control
CC
CC

OPTICAL SYSTEMS DESIGN
DOC ID: 10110306
OSD8826 OPERATOR MANUAL
PAGE
6
1.3 PRODUCTS AND OPTIONS
There are various options available for the OSD8826 as identified in Table 1 below:
OSD8826 (example only)
TABLE 1: PRODUCTS AND OPTIONS
ITEM DESCRIPTION
T Transmitter
R Receiver
ITEM DESCRIPTION
- Standard single channel
2 Two channel card receiver (OSD8826R Only)
ITEM DESCRIPTION
- Card version (3RU high chassis mount for OSD370 or OSD350)
C Stand-alone module version
R 2 C
1 2 3
1
2
3

OPTICAL SYSTEMS DESIGN
DOC ID: 10110306
OSD8826 OPERATOR MANUAL
PAGE
7
1.4 TECHNICAL SPECIFICATIONS
TABLE 2: TECHNICAL SPECIFICATIONS
SPECIFICATION PERFORMANCE
Video Input/Output Impedance
75Ω
Video Input/Output Levels 1Vpp nominal
Video Connectors
BNC
Video Bandwidth 5Hz to 6MHz
Signal to Noise Ratio (Weighted) > 63dB
Linearity <1% Differential Phase (DP)
<1°Differential Gain (DG)
Data Interface
TTL, RS232, RS422 and RS485. 31kHz Manchester or Biphase possible
in either direction
Data Rates DC to > 1.0Mbps
Contact Transmission Buffered input at OSD8826T, MOSFET output at OSD8826R
Data Connectors 8 Way cage clamp terminal block
Number of Fibers Required One only
OSD8826T Transmitter Wavelength
1310nm
OSD8826T Transmitter Coupled Power -15 to -10dBm into singlemode fiber
-12 to -5dBm into multimode fiber
OSD8826R Transmitter Wavelength
1550nm
OSD8826R Transmitter Coupled Power
-15 to -10dBm into singlemode
-12 to -5dBm into multimode fiber
OSD8826R Receiver Sensitivity <-33dBm
OSD8826R Receiver Saturation >-3dBm
OSD8826T Receiver Sensitivity <-36dBm (singlemode fiber)
OSD8826T Receiver Saturation >-3dBm
Optical Connector ST standard, SC and FC optional
Optical Link Budget and distances
>21dB: >5km on multimode fiber @ 1310nm (fiber bandwidth limited)
>18dB: >40km on singlemode fiber @ 1310nm (fiber loss limited)
>30dB: >80km on singlemode fiber @1310nm with high power devices*
Dimensions (mm)
60W x 94D x 26H (module – excluding flanges and connectors)
25W x 208D x 100H (card)
Weight 200g (module), 200g (card), 250g for OSD8826R2 card
Power Requirements +10V to +40V
DC
or 22V to 28V
AC
@ 3VA
Operating Temperature -40°C to +75°C
Relative Humidity 0 to 95% non-condensing
Chassis Current Consumption (CCC) 0.2 Amp (0.4 Amp for OSD8826R2)
102882609
NOTES:
*Other combinations of laser types and optical levels, receiver types and sensitivity levels are
possible. Contact OSD for details.

OPTICAL SYSTEMS DESIGN
DOC ID: 10110306
OSD8826 OPERATOR MANUAL
PAGE
8
2INSTALLATION AND OPERATION
2.1 INTRODUCTION
This section outlines the methods required to install and operate the OSD8826T and OSD8826R
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 evident, return
the unit with the packaging to your supplier immediately.
2.2 INSTALLATION
2.2.1 WARNING AND PRECAUTIONS
▲ ELECTROMAGNETIC COMPATIBILITY
WARNING: This is a Class A product. In a domestic environment this product may cause radio
interference in which case the user may be required to take adequate measures.
▲ OPTICAL OUTPUT OPERATION
WARNING: Laser Safety: Class 1 Laser Product per IEC/EN 60825-1:20011 standard.
Class 1
The OSD8826 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: 10110306
OSD8826 OPERATOR MANUAL
PAGE
9
2.2.2 OSD8826 DRAWINGS AND DIMMENSIONS
The OSD8826TC and OSD8826RC are designed to be mounted on an even surface and to be secured
by means of M4 or smaller screws. The OSD8826T and OSD8826R card versions are designed to be
inserted into a chassis and secured by means of captivated screws.
(a) Module Version
(b) Card Version
FIGURE 2: OSD8826 MOUNTING DIMENSIONS
25
100
210
R2.1
R2.1
Ø8.5
8.0
8.0
DETAIL A
26.4
60
83.4
DETAIL A
6
94
38
25.6
25.6

OPTICAL SYSTEMS DESIGN
DOC ID: 10110306
OSD8826 OPERATOR MANUAL
PAGE
10
2.3 PIN ASSIGNMENTS AND CONNECTIONS
Pin assignments for the “Data Input/Output” connectors (Figure 3) are shown in Table 3 below. The
module versions and single channel cards have the 8 way cage clamp terminal block connector while
the 2 channel receiver card version has two RJ45 connectors.
TABLE 3: PIN ASSIGNMENT
PIN FUNCTION PIN FUNCTION
1
Data Input + 5 RS232 Input
2
Data Input – 6 RS232 Output
3
Data Output + / RS485 2W DI/O+ 7 Contact Closure
4
Data Output - / RS485 2W DI/O- 8 Data Ground
RS485 2-Wire half duplex is used to connect several devices to the same bus when only one unit
transmits data at a time. All units are normally in high impedance receive mode waiting for data. When
transmission of data is requested, the unit waits for a protocol specific turn-around time delay before
transmitting after which it returns to receive mode.
RS485 4-Wire full duplex is used for master/slave arrangement. Devices are polled and respond faster
with no turn-around time delay required between request/response. The receiver is always enabled
allowing the devices to receive data even while responding to a request.
Note: If a link doesn't seem to be working correctly, try swapping the polarity of the data lines on both
ends. Some devices are marked opposite the RS485 standard.
RS422 / 4W RS485
Pin Connection
1 Rx +
2 Rx –
3 Tx +
4 Tx –
8 Ground
2W RS485
Pin Connection
3 I/O +
4 I/O –
8 Ground
Contact Closure
OSD8826T
Pin Connection
7 Contact Input
8 Ground
OSD8826R
Pin Connection
7 Normally open (NO)
8 Common (COM)

OPTICAL SYSTEMS DESIGN
DOC ID: 10110306
OSD8826 OPERATOR MANUAL
PAGE
11
FIGURE 3: DATA CONNECTOR PINOUTS
To connect data cabling for the 8 way cage clamp terminal block, strip the wire between 8mm to 12mm
in length. Insert the cable into the appropriate slot. Using a flat head screw driver, push the orange latch
that is above the cable being inserted and push the cable further in. Release the orange latch. Gently
pull the cable to ensure it is connected and does not come out. If it does come out, the wire is not
stripped enough. Note that if the wire is stripped less than 7mm, there will not be a secure connection.
Shielded cables are recommended for video and data wiring.
FIGURE 4: DATA CABLING CONNECTIONS
Power Connector
8 7 6 5 4 3 2 1
BNC
8 Way Cage Clamp Data Connector
8 Way Cage Clamp Data Connector
Data Cabling
8 –12mm Push
Insert
8 7 6 5 4 3 2 1
RJ45 Connector
Power Connector

OPTICAL SYSTEMS DESIGN
DOC ID: 10110306
OSD8826 OPERATOR MANUAL
PAGE
12
2.4 DATA MODE SWITCH SETTINGS
The 3-way data control switch is located at the front of OSD8826 modem. Switches SW1, SW2 and
SW3 are used for setting the Data Mode Options.
Note: For correct operation, ensure that both OSD8826T and OSD8826R have the switch settings in
the same modes.
TABLE 4: DATA MODE SWITCH SETTINGS
SWITCH STATE POSITION FUNCTION
SW1 OFF DOWN RS422/485
ON UP RS232
SW2 OFF DOWN 4-Wire Operation
ON UP 2-Wire Operation
SW3 OFF DOWN RS422
ON UP RS485
FIGURE 5: DATA SWITCH DIAGRAMS
TABLE 5: DATA SWITCH EXAMPLES
DATA TYPE SW1 SW2 SW3
RS232 1 X X
RS422 0 X 0
RS485 2W 0 1 1
RS485 4W 0 0 1
1=On, 0=Off, X=Don’t Care
Switch setting is example
only
ON
OFF
1 2 3
Mode Switch

OPTICAL SYSTEMS DESIGN
DOC ID: 10110306
OSD8826 OPERATOR MANUAL
PAGE
13
2.5 CONNECTIONS
2.5.1 POWER SUPPLY CONNECTIONS
The OSD8826 card version is powered from the OSD370 or OSD350 chassis. DC power in the
OSD8826 card version is connected via a DB9 connector. The card version of the OSD8826T and
OSD8826R should be fixed into the OSD370 (or OSD350) chassis using the captivated screws. Either
card can be plugged in or out of the OSD370 (or OSD350) chassis with power on or off.
TABLE 6: CARD POWER SUPPLY PINOUT
OSD370N or OSD350N
Power Pin Specification
Pin 3 +12V
DC
(±1V) – supplied by OSD921
Pin 6,7 0V
FIGURE 6: CARD POWER SUPPLY PINOUT
The OSD8826 module requires external +10 to 40V
DC
or 22 to 28V
AC
power @ 3VA. Power should be
connected to the power socket located at the back of the case. DC power should be connected as
indicated in Table 7.
TABLE 7: DC OR AC POWER CONNECTION
External Power Pin Specification
Pin 1 +10V to +40V
DC or
22V to +28V
AC
Pin 2 0V
FIGURE 7: OSD8826C POWER SUPPLY CONNECTIONS
Power Connector
2 1
Power Connector
5
1
6 9

OPTICAL SYSTEMS DESIGN
DOC ID: 10110306
OSD8826 OPERATOR MANUAL
PAGE
14
2.5.2 BASIC CONNECTIONS
The video-input signal (eg. from camera) is connected to the video input BNC connector on the
OSD8826T. The video output signal (eg. to monitor) is connected from the video output BNC
connector on the OSD8826R.
Data signals are connected to the 8 way cage clamp terminal block connector as set out in Table 3.
Shielded cables are recommended for video and data wiring.
The optical fiber cable must be terminated with the appropriate optical connector. Before connection,
inspect the ends 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.
2.5.3 CONTACT CLOSURE CONNECTIONS
The OSD8826 has one forward contact closure channel. The contact closure input on the OSD8826T
(Pin 7) is driven high. To operate the contact closure, the input should be switched to ground (see
Figure 8).
FIGURE 8: OSD8826T CONTACT CLOSURE INPUT
The contact closure output on the OSD8826R/RC/R2 (Pin 7) is to be connected to the relay coil.
Maximum ratings the OSD8826 can drive is 1.5A @ 24V
(max)
.
FIGURE 9: OSD8826R CONTACT CLOSURE OUTPUT
Pin7
OSD8826
24V
(max)
External
Relay
3V
Pin7
OSD8826
10K
External
Switch

OPTICAL SYSTEMS DESIGN
DOC ID: 10110306
OSD8826 OPERATOR MANUAL
PAGE
15
2.6 OSD8826 OPERATION
2.6.1 OSD8826T AND OSD8826R OPERATION
When using the OSD8826 for the first time, check that the unit is in good condition with no visible
damage.
If a card version is used, insert it in an appropriate slot on the OSD370 or OSD350 chassis and check
that the indicators illuminate accordingly on power up (see Table 8). If a module version (OSD8826C)
is used, connect the unit to an appropriate power source and check that the indicators illuminate
accordingly on power up (see Table 8).
To connect a video signal, connect a BNC terminated coaxial cable from the camera to the OSD8826T.
If the camera is operational, the "Video Present" indicator should illuminate ‘Amber’.
Connect a BNC terminated coaxial cable between the BNC socket on the rear of the OSD8826R and the
video monitor or switcher.
Plug in the optical connectors of the optical cable. If the set-up is connected correctly, the OSD8826R
"Link OK" LED will change from ‘Red’ to ‘Green’. If a video signal is being received the “Video
Present” indicator on the OSD8826R should be ‘Amber’; if no video signal is being received this
indicator will not be illuminated.
Plug the digital signal source (data) into 8 way terminal block connector on the rear of the module.
Ensure that the correct signals are connected to the correct pins of Data Input/Output connector as
specified in Table 3.
Ensure that both OSD8826T and OSD8826R switch settings are in the same modes (see Table 4).
2.6.2 OSD8826T AND OSD8826R INDICATORS
FIGURE 10: OSD8826TC AND OSD8826RC LED INDICATORS
TABLE 8: OSD8826 INDICATOR FUNCTION
INDICATOR PARAMETER COLOUR FUNCTION
VIDEO PRESENT Video Input Status Off No video signal present
Amber Video signal present
LINK OK Link Status Red No optical signal received
Green Optical Signal received
Video Present
Indicator
Link OK
Indicator
LED indicators

OPTICAL SYSTEMS DESIGN
DOC ID: 10110306
OSD8826 OPERATOR MANUAL
PAGE
16
3MAINTENANCE
3.1 INTRODUCTION
The following section outlines the fault-finding procedure for the OSD8826T and OSD8826R modems.
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 (ES) sensitive and Electrostatic Discharge
(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 is connected to the power socket.
▲ Check that the data signals are connected to the modem correctly and that the distant OSD8826T
or OSD8826R 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.
3.3 ROUTINE MAINTENANCE
▲ There is no routine maintenance required with the OSD8826T and OSD8826R.

OPTICAL SYSTEMS DESIGN
DOC ID: 10110306
OSD8826 OPERATOR MANUAL
PAGE
17
4WARRANTY
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 REPAIRS
Optical Systems Design reserves the right to repair or replace faulty modules/units. Please obtain a
“Return Material Authorisation” (RMA) form and number before returning goods.
Goods must be returned in adequate packing material to Optical Systems Design, Warriewood or its
nominated authorised representative, for all repairs.
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.
4.2.4 EXCLUSIONS
This warranty does not apply to defects caused by unauthorized modifications, misuse, abuse or
transport damage to the equipment. All modifications to OSD’s standard product will need written
authorization and will be charged at normal repair rates. All modifications are to be carried out by OSD
Technicians. Warranty is void if unauthorized removal and/or tampering with serial number and/or
labels is evident.

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: [e-mail]
Web Site: www.osd.com.au
OPTIC L
SYSTEMS
DESIGN
PTY LTD A.B.N. 83 003 020 504
Printed in Australia