Optical Systems OSD553 User manual

OPERATOR MANUAL
OSD553
TRIPLE VIDEO
FIBRE OPTIC RECEIVER

OPTICAL SYSTEMS DESIGN
DOC ID: 10103502
OSD553 OPERATOR MANUAL
PAGE 2
OSD553
TRIPLE VIDEO
FIBRE OPTIC RECEIVER
Document No: 101035 Revision 02

OPTICAL SYSTEMS DESIGN
DOC ID: 10103502
OSD553 OPERATOR MANUAL
PAGE 3
C O N T E N T S
1. TECHNICAL SUMMARY............................................................................................................4
1.1 BRIEF DESCRIPTION................................................................................................................4
1.2 TECHNICAL SPECIFICATION...................................................................................................5
2. INSTALLATION AND OPERATING INSTRUCTIONS .........................................................6
2.1 INTRODUCTION........................................................................................................................6
2.2 INSTALLATION.........................................................................................................................6
2.3 OTHER CONNECTIONS............................................................................................................6
2.4 OPERATION ...............................................................................................................................7
2.5 CONTROLS.................................................................................................................................7
2.6 INDICATORS..............................................................................................................................7
3. MAINTENANCE ...........................................................................................................................8
3.1 INTRODUCTION........................................................................................................................8
3.2 EXTERNAL INSPECTION.........................................................................................................8
3.3 ROUTINE MAINTENANCE ......................................................................................................8
4. WARRANTY..................................................................................................................................9
4.1 WARRANTY PERIOD................................................................................................................9
4.2 ALL REPAIRS.............................................................................................................................9
4.3 WARRANTY REPAIRS..............................................................................................................9
4.4 OUT-OF-WARRANY REPAIRS................................................................................................9
4.5 SITE REPAIRS............................................................................................................................9
4.6 EXCLUSIONS.............................................................................................................................9

OPTICAL SYSTEMS DESIGN
DOC ID: 10103502
OSD553 OPERATOR MANUAL
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1. TECHNICAL SUMMARY
1.1 BRIEF DESCRIPTION
The OSD553 is a triple video receiver compatible with all of OSD’s OSD300 series
analog video transmitters including
1. OSD361 video only transmitter module
2. OSD365 micro video only transmitter module
3. OSD351 video only transmitter card
4. OSD381 video only transmitter module
5. OSD551 triple video only transmitter card
When used with these units a video bandwidth of at least 10MHz is achieved. It is
typically used in control rooms with OSD361 or OSD381 video transmitter modules
located at fixed cameras or with OSD551 triple transmitter cards generally located in
other control rooms or signal aggregation points.
Each of the OSD553’s three receivers has an automatic gain control that utilises the sync
tips to ensure stable picture levels under all lighting conditions at the camera.
It is available to operate either at a wavelength of 850nm over multimode fibre (OSD553)
or at a wavelength of 1300nm to operate over either multimode or singlemode fibres
(OSD553L). Multimode systems based on the OSD553 can typically operate over
distances of up to 5km and those based on the OSD553L extend this to at least 20km.
Singlemode systems based on the OSD553L can typically operate over at least 40km.
The receiver is in OSD's standard card format designed to plug into the OSD350 or
OSD370 chassis.
The OSD553 operates off +12VDC or ±12VDC.

OPTICAL SYSTEMS DESIGN
DOC ID: 10103502
OSD553 OPERATOR MANUAL
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1.2 TECHNICAL SPECIFICATION
ELECTRICAL
Number of channels 3
Output Impedance 75Ω
Output Levels 1Vpp nominal
Receiver AGC Technique Sync tips
Connector BNC
Bandwidth 10Hz to 10MHz, ±3dB
Weighted Signal to Noise >50dB at –30dBm peak received optical power
Ratio (pk luminance/rms
noise over 5.5MHz)
OPTICAL
Number of fibres 3
Receiver operating wavelength 800 to 900nm (OSD553)
1200 to 1600nm (OSD553L)
Receiver sensitivity <-30dBm peak for 50dB SNR (OSD553)
<-31dBm peak for 50dB SNR (OSD553L)
Receiver saturation >-14dBm peak (OSD553)
>-15dBm peak (OSD553L)
Optical connectors ST standard Others optional (consult factory)
PHYSICAL
Power Requirements +12V @ 200mA
-12V @ 100mA
OR
+ 12V @ 300mA
Dimensions (mm) 25W X 100H X 208D
Weight 200g
Indicators RX Signal Present (3)
Operating Temperature 0 to 60°C
Relative Humidity 0 to 95% non-condensing

OPTICAL SYSTEMS DESIGN
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OSD553 OPERATOR MANUAL
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2. INSTALLATION AND OPERATING INSTRUCTIONS
2.1 INTRODUCTION
This section outlines the methods required to install and operate the OSD553
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 and packing to the supplier immediately.
2.2 INSTALLATION
Plug the unit into its OSD350 or OSD370 chassis and connect the video signal source to
the remote transmitter and the monitor or switcher to the OSD553.
Ensure that correctly terminated 75ΩBNC patch leads are used.
Fix the unit into the chassis using the captivated screws and connect the optical cable.
If a video signal is being transmitted through the link the appropriate "Video Signal
Present" LEDs will glow green on the front panel of OSD353 receiver. If not this LED
will glow red.
Note that the card can be plugged in or out of the OSD350 or OSD370 chassis with
power on or off.
2.3 OTHER CONNECTIONS
The video signal is connected to external equipment by a BNC jack.
The optical fibre 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 acetone or isopropyl alcohol and a lint
free tissue to remove contamination.

OPTICAL SYSTEMS DESIGN
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OSD553 OPERATOR MANUAL
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2.4 OPERATION
2.5 CONTROLS
The OSD553 automatically maintains the output video signal at 1.0±0.1Vpp
The OSD553 has the following controls:
LK4, LK3, LK2 Enable the video mute to operate on Channel 1 (Top), 2, 3
(Bottom). If installed the video output is disabled when the
associated “video present indicator” changes from green to red.
LK 7, LK6, LK5 Couple channels 1, 2 and 3 to the alarm relay (if fitted). This is
useful when the unit’s “Alarm” function is required as unused
channels can be disabled by removing the associated link.
LK1 Set to 1 if –12V is available (as is the case when used in an
OSD350 or OSD370 chassis fitted with an OSD911 or OSD922
power supply unit (PSU)) and to 3 if –12V is not available (as is
the case when an OSD921 PSU is used).
2.6 INDICATORS
The OSD553 has only three indicators, one for each channel.
"Video Signal Present" Green when a video signals is detected
Red when no video signal is detected
Note that this will glow red even if an optical signal is present but there is no video signal
transmitted by the remote transmitter.

OPTICAL SYSTEMS DESIGN
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OSD553 OPERATOR MANUAL
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3. MAINTENANCE
3.1 INTRODUCTION
The following section outlines the fault finding procedures for the OSD553 modem.
Please take note of the following:
Personnel without considerable technical 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 running are taken
carefully, as some components are extremely expensive and can be damaged by failure
of any portion of their support circuitry.
3.2 EXTERNAL INSPECTION
Visually check the following:
Check that the power supply voltages are correct on the Power Supply Unit (+12 to
+17VDC and -12 to -17VDC for the OSD911 and +11.5 to +12.5VDC on the OSD921).
Check that video signal is connected to the remote video transmitter and that the OSD553
has been correctly connected to properly terminated external equipment.
Inspect optical connectors, and clean using acetone and a lint free tissue to remove
contamination.
Check that the transmitter’s optical power is at a level appropriate to the link distance.
3.3 ROUTINE MAINTENANCE
No routine maintenance is required for this equipment.

OPTICAL SYSTEMS DESIGN
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4. WARRANTY
Optical Systems Design 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 an Optical Systems Design “Return Material Authorisation” form and
number before returning goods.
Goods must be returned in adequate packaging material to Optical Systems Design, or
its nominated authorised representative, for all repairs.
4.3 WARRANTY REPAIRS
Return shipments to Optical Systems Design shall be at customer’s expense and
freight back to the customer will be at Optical Systems Design’s expense.
4.4 OUT-OF-WARRANY REPAIRS
Optical Systems Design 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 Optical Systems Design will have a 3 month warranty from the date of
dispatch.
4.5 SITE REPAIRS
By agreement site repairs may be undertaken for which out of pocket, accommodation
and travel expenses will be charged.
4.6 EXCLUSIONS
This warranty does not apply to defects caused by unauthorised modifications,
misuse, abuse or transport damage to the equipment.
All modifications to Optical Systems Design standard products will need written
authorisation.
All modifications are to be carried out by Optical Systems Design and will be charged
at normal repair rates.
Warranty is void if unauthorised removal and/or tampering with serial number and/or
repair labels is evident.