Optical Systems Design OSD9003 User manual

OPERATOR MANUAL
OSD9003/OSD9004
WIDEBAND FIBEROPTIC RF LINK

OPTICAL SYSTEMS DESIGN
DOC ID: 10111701
OSD9003/OSD9004 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 TECHNICAL SPECIFICATIONS ........................................................................................... 5
2 INSTALLATION AND OPERATION..................................................................................... 6
2.1 INTRODUCTION .................................................................................................................... 6
2.2 INSTALLATION ..................................................................................................................... 6
2.2.1 WARNING AND PRECAUTIONS......................................................................................................... 6
2.3 OSD9003/OSD9004 D RAWINGS A ND D IMENSIONS ................................................................. 7
2.4 OSD9003/OSD9004 FRONT AND REAR PANELS............................................................... 7
2.5 OPERATION AND CONNECTIONS ..................................................................................... 8
2.5.1 POWER SUPPLY CONNECTIONS ....................................................................................................... 8
2.5.2 REMOTE ALARM CONNECTIONS ..................................................................................................... 8
2.5.3 OSD9003/OSD9004 SWITCH SETTINGS ............................................................................................. 9
2.5.4 SYSTEM SETTING RECOMMENDATIONS ..................................................................................... 11
2.5.5 OSD9003 LED INDICATORS .............................................................................................................. 12
2.5.6 OSD9004 LED INDICATORS .............................................................................................................. 12
2.5.7 OSD9003 CONNECTIONS................................................................................................................... 13
2.5.8 OSD9004 CONNECTIONS................................................................................................................... 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 REPAIRS................................................................................................................................ 15
4.2.1 WARRANTY REPAIRS........................................................................................................................ 15
4.2.2 OUT-OF-WARRANTY REPAIRS........................................................................................................ 15
4.2.3 SITE REPAIRS ...................................................................................................................................... 15
4.2.4 EXCLUSIONS ....................................................................................................................................... 15
FIGURE 1: OSD9003/OSD9004 MOUNTING DIMENSIONS.............................................................. 7
FIGURE 2: OSD9003/OSD9004 FRONT/REAR PANELS .................................................................... 7
FIGURE 3: OSD9003/9004 POWER SUPPLY CONNECTIONS.......................................................... 8
FIGURE 4: OSD9003 SWITCH SETTINGS........................................................................................... 9
FIGURE 5: OSD9003 LED INDICATORS........................................................................................... 12
FIGURE 6: OSD9004 LED INDICATOR ............................................................................................. 12
FIGURE 7: OSD9003 CONNECTIONS................................................................................................ 13
FIGURE 8: OSD9004 CONNECTIONS................................................................................................ 13
TABLE 1: OSD9003 TECHNICAL SPECIFICATIONS ........................................................................ 5
TABLE 2: OSD9004 TECHNICAL SPECIFICATIONS ........................................................................ 5
TABLE 3: DC OR AC POWER CONNECTION.................................................................................... 8
TABLE 4: OSD9003 SWITCH FUNCTION........................................................................................... 9
TABLE 5: ATTENUATOR SETTING MATRIX ................................................................................. 10
TABLE 6: TYPICAL LEVELS FOR SINGLE CARRIER ................................................................... 11
TABLE 7: OSD9003 LED INDICATOR FUNCTION.......................................................................... 12
TABLE 8: OSD9004 LED INDICATOR FUNCTION.......................................................................... 12

OPTICAL SYSTEMS DESIGN
DOC ID: 10111701
OSD9003/OSD9004 OPERATOR MANUAL
PAGE 4
1TECHNICAL SUMMARY
1.1 BRIEF DESCRIPTION
1.1.1 OVERVIEW
The OSD9003 transmitter provides an extremely wideband transmission capability which allows its use
in a variety of RF over fiber applications. It has an excellent frequency response characteristic which
enables its employment in paging systems as well as its primary applications of cellular RF trunking at
800-1000MHz and 1700-1900MHz. It employs extremely linear circuitry to ensure very wide dynamic
range performance as required in uplink applications. It is completely format independent so can
support any current or proposed cellular system.
The unit employs a very wideband laser driver and DFB laser to ensure outstanding linearity, noise
performance and dynamic range.
A very convenient feature is the user selectable automatic or manual input RF level adjustment.
The OSD9004 is designed to receive intensity modulated optical signals in the wavelength range 1200
to 1600nm. It also employs extremely linear circuitry to ensure very wide dynamic range performance
as required in uplink applications and is completely format independent so can support any current or
proposed cellular system.
The receiver is a wideband balanced PIN photodiode design which has outstanding linearity, noise
performance and dynamic range.
The OSD9004 is supplied with a built in automatic gain control (AGC) controlled by the received
optical level, a feature which greatly simplifies installation and ongoing operation. However the user
can elect to use manual gain control which can be useful in some specialized applications.
Both the OSD9003 and OSD9004 are packaged in a very small, rugged standalone enclosure operating
from a wide range of input power supply voltages, allowing totally non-critical powering.
Furthermore the enclosure has excellent RF shielding so that the unit can be installed in almost any RF
environment which, combined with its wide operating range of -20 to +65ºC, allows it to be installed
almost anywhere on the planet.
1.1.2 APPLICATIONS
▲ Any linear RF transmission over fiber
from 10 to 2500MHz such as
remoting and EMI/EMC
measurements
▲ Mobile RF systems between 800 and
1900MHz
▲ UHF/VHF radio links
1.1.3 FEATURES AND BENEFITS
▲ Standard optical and RF connectors
simplify system integration
▲ Operates over from at least 40km of
singlemode cable and optionally
available with high power laser to
operate over at least 80km
▲ OSD9003 has high linearity and low
noise DFB laser enables very wide
dynamic range links
▲ OSD9003 has user selectable manual
or automatic input level control
enables flexible system integration
▲ Operates with non-critical power
▲ OSD9003 has a bargraph display of
input RF level while the OSD9004
displays the input optical signal level
▲ OSD9004 is available with user
selectable manual gain control or
automatic gain control for convenient
system integration.
▲ Operates from -20° C to +65° C so can
be installed in almost any
environment
▲ Extremely rugged metal case
▲ Optional remote monitoring/alarming
capability

OPTICAL SYSTEMS DESIGN
DOC ID: 10111701
OSD9003/OSD9004 OPERATOR MANUAL
PAGE 5
1.2 TECHNICAL SPECIFICATIONS
TABLE 1: OSD9003 TECHNICAL SPECIFICATIONS
SPECIFICATION PERFORMANCE
Operating Wavelength
1310 ±
5nm nominal. Also available in all 18 CWDM wavelengths (1270-1610)nm
Optical Output Power +3.0 ±1.0dBm
Optical Connector SC/APC (FC/APC is optional)
Optical Return Loss >45dB
RF Input Impedance 50Ωnominal, unbalanced
RF Input Return Loss >10dB
RF Input Connector SMA
Transmitter Bandwidth 10 – 2500MHz ±2.0dB
Input Level Control Automatic over a 31dB range or user adjustable
User adjustable over 31dB range in 1dB increments using DIP switch
Input 1dB Compression Point >+15dBm (Input attenuation set to 0dB)
Input 3
rd
Order Intercept Point >+32dBm (Input attenuation set to 0dB)
Dimensions (mm) 60W x 94D x 26H
Weight 0.3kg
Power Requirements +9V to +28V
DC
@ 3VA
Operating Temperature -20°C to +65°C
Relative Humidity 0 to 95% non-condensing
102900302
TABLE 2: OSD9004 TECHNICAL SPECIFICATIONS
SPECIFICATION PERFORMANCE
Operating Wavelength 1260 – 1620nm
Receiver Bandwidth 30 – 2500MHz ±2.0dB
Optical Connector SC/APC (FC/APC is optional)
Optical Return Loss >45dB
Receiver Saturation >2dBm
Maximum Optical Input Power 3dBm continuous, 6dBm transient (60 seconds maximum)
RF Input Impedance 50Ωnominal, unbalanced
RF Input Return Loss >10dB
RF Input Connector SMA
Output Level Control (Manual) User adjustable over 31dB RF range (15.5dB optical) in 1dB increments
Output Level Control (Auto) Self adjusts from -15 to +1dBm optical input power
Output 1dB Compression Point >+18dBm
Output Third Order Intercept Point >+35dBm (Input attenuation set to 0dB)
Dimensions (mm) 60W x 94D x 26H
Weight 0.3kg
Power Requirements +9V to +28V
DC
@ 3VA
Operating Temperature -20°C to +65°C
Relative Humidity 0 to 95% non-condensing
102900402

OPTICAL SYSTEMS DESIGN
DOC ID: 10111701
OSD9003/OSD9004 OPERATOR MANUAL
PAGE 6
2INSTALLATION AND OPERATION
2.1 INTRODUCTION
This section outlines the methods required to install and operate the OSD9003/OSD9004 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.
Precautions have to be taken not to overdrive the OSD9003 RF input with excessive signal level. Laser
damage may occur as a result of excessive signal power being applied to the input. The total
maximum RF power applied to OSD9003 RF input port is < +20dBm.
OSD9004 uses a sensitive photodiode that can be damaged when optical power is too high. It is
necessary to ensure that optical power going into OSD9004 input is less than +3dBm or damage
to the unit may occur. The OSD9003 can launch optical power as high as +7dBm. In situations where
optical path attenuation is not high enough, a fixed optical attenuator must be used to reduce optical
power at the OSD9004 receiver input to less than +3dBm.
OPTICAL OUTPUT OPERATION
Class 1M
The OSD9003 is a Class 1M laser product.
Class 1M Laser Product per IEC/EN 60825-
1:20011 standard
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: 10111701
OSD9003/OSD9004 OPERATOR MANUAL
PAGE 7
2.3 OSD9003/OSD9004 DRAWINGS AND DIMENSIONS
The OSD9003/OSD9004 standalone module is designed to be mounted on an even surface and to be
secured by means of M4 or smaller screws.
FIGURE 1: OSD9003/OSD9004 MOUNTING DIMENSIONS
2.4 OSD9003/OSD9004 FRONT AND REAR PANELS
The front panel consists of an optical output (OSD9003) optical input (OSD9004), 6-way DIP switch
and LED indicators. The rear panel consists of a 3-way terminal block power/alarm connector, an RF
Input (OSD9003) and an RF Output (OSD9004) . Each section will be described further throughout this
manual.
FIGURE 2: OSD9003/OSD9004 FRONT/REAR PANELS
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
DIP Switch
LED Indicators
Optical Output
RF Input
Power/Alarm
Front Panel
Rear Panel
DIP Switch
LED Indicators
Optical Input
RF Output
Power/Alarm
OSD9003 OSD9004

OPTICAL SYSTEMS DESIGN
DOC ID: 10111701
OSD9003/OSD9004 OPERATOR MANUAL
PAGE 8
2.5 OPERATION AND CONNECTIONS
2.5.1 POWER SUPPLY CONNECTIONS
The OSD9003/OSD9004 module requires external 9 to 28V
DC
@ 3VA. Power should be connected to
the power socket located at the back of the case as indicated in Table 3.
TABLE 3: DC OR AC POWER CONNECTION
External Power Pin Specification
Pin 1 9 to 28V
DC
@ 3VA
Pin 2 Ground – 0V
Pin 3 Remote Alarm
FIGURE 3: OSD9003/9004 POWER SUPPLY CONNECTIONS
2.5.2 REMOTE ALARM CONNECTIONS
The OSD9003/OSD9004 provides a remote alarm connection located on pin 3 of the 3-way
power/alarm connector (see Figure 3). Open drain alarm output sinks current in the absence of an alarm
condition. When an alarm occurs, the output goes into a high impedance state.
When power to the OSD9003 unit is switched off or the laser current monitor indicates laser fail mode
Pin 3 becomes open circuit. The unit’s monitoring circuit connects Pin3 to Pin2 (circuit ground) when
there is no fault.
When power to the OSD9004 unit is switched off or there is a optical loss condition Pin 3 becomes
open circuit. The unit’s monitoring circuit connects Pin 3 to Pin 2 (circuit ground) when there is no
fault.
Power
/Alarm
Connector
3 2 1

OPTICAL SYSTEMS DESIGN
DOC ID: 10111701
OSD9003/OSD9004 OPERATOR MANUAL
PAGE 9
2.5.3 OSD9003/OSD9004 SWITCH SETTINGS
FIGURE 4: OSD9003 SWITCH SETTINGS
OSD9003 Settings
In Manual Mode the RF attenuation is controlled by dip switches (SW1-SW5). Each toggle switch
changes the Input RF attenuation level by 1,2,4,8 and 16dB respectively. Toggling the position on any
switch is the sum of the attenuated amount ie switch 1 (16dB) and 3 (4dB) enabled will provide an
attenuation of 20dB. See Table 4 for switch control Note: On is up position, down is off.
TABLE 4: OSD9003 SWITCH FUNCTION
Switch No 1 2 3 4 5 6*
Attenuation 16dB 8dB 4dB 2dB 1dB -
*Switch 6 has no function and can be either On or Off.
On
Off
1 2 3 4 5 6

OPTICAL SYSTEMS DESIGN
DOC ID: 10111701
OSD9003/OSD9004 OPERATOR MANUAL
PAGE 10
The RF input level to the transmitter is adjusted for optimum Optical Modulation Index (OMI). The
input RF attenuator has a range of 31dB. It is important to set the attenuator so that the laser is working
with optimum modulation that will provide the best signal to noise ratio for the received signal. Table 5
provides a matrix of attenuator settings (RF Attn in dB) for the number of carrier channels whilst
showing the RF input range in dBm per carrier.
TABLE 5: ATTENUATOR SETTING MATRIX
RF Att.
(dB)
Number of Carriers
1 2 4 6 10 15 30 60
0 -10 –13 –16 –18 –20 –22 –25 –28
RF Input Range (dBm/carrier)
1 -9 -12 -15 -17 -19 -21 -24 -27
2 -8 -11 -14 -16 -18 -20 -23 -26
3 -7 -10 -13 -15 -17 -19 -22 -25
4 -6 -9 -12 -14 -16 -18 -21 -24
5 -5 -8 -11 -13 -15 -17 -20 -23
6 -4 -7 -10 -12 -14 -16 -19 -22
7 -3 -6 -9 -11 -13 -15 -18 -21
8 -2 -5 -8 -10 -12 -14 -17 -20
9 -1 -4 -7 -9 -11 -13 -16 -19
10 0 -3 -6 -8 -10 -12 -15 -18
11 [phone]
12 [phone]
13 [phone]
14 +4 [phone]
15 +5 [phone]
16 +6 [phone]
17 +7 +4 +1 -1 -3 -5 -8 -11
18 +8 +5 +2 0 -2 -4 -7 -10
19 +9 +6 +3 +1 -1 -3 -6 -9
20 +10 +7 +4 +2 0 -2 -5 -8
21 +11 +8 +5 +3 +1 -1 -4 -7
22 +12 +9 +6 +4 +2 0 -3 -6
23 +13 +10 +7 +5 +3 +1 -2 -5
24 +14 +11 +8 +6 +4 +2 -1 -4
25 +15 +12 +9 +7 +5 +3 0 -3
26 +16 +13 +10 +8 +6 +4 +1 -2
27 +17 +14 +11 +9 +7 +5 +2 -1
28 +18 +15 +12 +10 +8 +6 +3 0
29 +19 +16 +13 +11 +9 +7 +4 +1
30 +20 +17 +14 +12 +10 +8 +5 +2
31 +21 +18 +15 +13 +11 +9 +6 +3
OSD9004 Settings
The OSD9004 receiver has one user adjustment available. The receiver attenuator can be set to the
required RF output power manually or alternatively can be set to automatic gain control by setting
switch 6 to the on position (up). In automatic gain control mode the unit maintains constant output level
over the optical range of 15dB.

OPTICAL SYSTEMS DESIGN
DOC ID: 10111701
OSD9003/OSD9004 OPERATOR MANUAL
PAGE 11
2.5.4 SYSTEM SETTING RECOMMENDATIONS
The RF output power can be set to provide system unity gain if there is sufficient received optical
power. Table 6 shows what levels to expect in OSD9003/9004 system
TABLE 6: TYPICAL LEVELS FOR SINGLE CARRIER
Input RF
[dBm]
OSD9003
RF
Attenuator
[dB]
Tx Optical
Power
[dBm]
Optical
Attenuation
[dB]
Rx Optical
Power
[dBm]
OSD9004
RF
Attenuator
[dB]
Output RF
[dBm]
-10 0 +5.0 5.0 0 Auto –26... –28
-10 0 +5.0 11 –6 Auto –26... –28
-10 0 +5.0 17 –12 Auto –26... –28
-10 0 +5.0 23 –18 Auto –32... –34
-10 0 +5.0 26 –21 Auto –38
-10 0 +5.0 26 –21 0 –38
-10 0 +5.0 23 –18 0 –32
-10 0 +5.0 20 –15 0 –26
-10 0 +5.0 17 –12 6 –26
-10 0 +5.0 14 –9 12 –26
-10 0 +5.0 11 –6 18 –27
-10 0 +5.0 8 –3 24 –27
-10 0 +5.0 5 0 30 –27
For best results, please note the following:
ALL RF Fiber Optic Transmission Systems operate best if:
a. Input carriers are as close as possible within each other, as this maximises the effective optical
power available to each carrier.
b. The combined RF input spectrum is adjusted just below the onset of inter-modulation
distortion where the laser is still reasonably linear.
c. It is important to have minimal optical reflections back to the laser diode. This is best ensured
by using only high quality, angle polished physical contact (SC/APC) optical connectors
which have a high optical return loss. Connectors must be clean and scratch free.
Similarly high quality splices (typically these are fusion splices) must be used to minimise
such reflections.
d. The receiver's optical input is not overloaded with too much optical power, ie more than
+3dBm optical power, as this will cause saturation and subsequent intermodulation
distortion.
RF level figures in Table 6 are given for a single carrier. Suggested power levels per carrier for
multichannel operation are in Table 5.

OPTICAL SYSTEMS DESIGN
DOC ID: 10111701
OSD9003/OSD9004 OPERATOR MANUAL
PAGE 12
2.5.5 OSD9003 LED INDICATORS
FIGURE 5: OSD9003 LED INDICATORS
TABLE 7: OSD9003 LED INDICATOR FUNCTION
LED Indicator LED Colour Input RF Power (dBm)
Red (blinking) > +20
Green LED ON > +10

Green LED ON > 0

Green LED ON > -10

Green LED ON > -20

Red LED ON < -30 (out of range)

Red LED ON Laser Fail*
*Laser Fail Red LED is laser over-current alarm indicator. It is normally off.
2.5.6 OSD9004 LED INDICATORS
FIGURE 6: OSD9004 LED INDICATOR
TABLE 8: OSD9004 LED INDICATOR FUNCTION
LED Indicator LED Colour Input Optical Power (dBm)
Red (blinking) > +3
Green LED ON > 0

Green LED ON > -5

Green LED ON > -10

Green LED ON > -15

Red LED ON < -17 (out of range)












OPTICAL SYSTEMS DESIGN
DOC ID: 10111701
OSD9003/OSD9004 OPERATOR MANUAL
PAGE 13
2.5.7 OSD9003 CONNECTIONS
FIGURE 7: OSD9003 CONNECTIONS
2.5.8 OSD9004 CONNECTIONS
FIGURE 8: OSD9004 CONNECTIONS
Optical Fiber
Output SMA RF Cable
Input
Power
Alarm
Optical Fiber
Input SMA RF Cable
Output
Power
Alarm

OPTICAL SYSTEMS DESIGN
DOC ID: 10111701
OSD9003/OSD9004 OPERATOR MANUAL
PAGE 14
3MAINTENANCE
3.1 INTRODUCTION
The following section outlines the fault-finding procedure for the OSD9003/OSD9004 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 RF cables are connected to the modem correctly and that the distant modem has
been connected correctly to any external equipment.
▲ Inspect the optical connectors (for fiber SFP option) for any contamination and clean using
isopropyl alcohol and a lint free tissue if any contamination is detected.
3.3 ROUTINE MAINTENANCE
▲ There is no routine maintenance required with the OSD9003/OSD9004.

OPTICAL SYSTEMS DESIGN
DOC ID: 10111701
OSD9003/OSD9004 OPERATOR MANUAL
PAGE 15
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 contact 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
repair 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