INSTRUCTION MANUAL
SL2150 Series
L-Band
Fiber Optic Extender
191 FOREST AVENUE
LOCUST VALLEY, NY 11560-2132 USA
(800)-488-8378 / (516)-671-7278 FAX (516)-671-3362
sales@multidyne.com
www.multidyne.com
REV A, Sep 21, 2011
MULTIDYNE, the Multidyne logo, SL2150-FTX and SL2150-FRX are registered trademarks
of MULTIDYNE Electronics, Inc.
Copyright 2011 MULTIDYNE Electronics, Inc., Locust Valley, New York. Printed in the United
States of America. All Rights Reserved. Contents of this publication may not be reproduced
in any form without the written permission of MULTIDYNE Electronics, Inc.
This product was designed and manufactured in the
UNITED STATES of AMERICA
REV A, Sep 21, 2011
TABLE OF CONTENTS
INTRODUCTION ..................................................................................................................... 1
FEATURES AND OPERATION ............................................................................................... 1
OPERATION: ....................................................................................................................... 2
TRANSMITTER, SL2150-FTX ............................................................................................. 2
RECEIVER, SL2150-FRX .................................................................................................... 4
INSTALLATION ................................................................................................................... 5
APPENDIX A. BLOCK DIAGRAMS ......................................................................................... 6
APPENDIX B. TECHNICAL SPECIFICATIONS ...................................................................... 7
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Instruction Manual, SL2150 Series
INTRODUCTION 1
INTRODUCTION
The SL2150 fiber optic links connect antennae with control rooms, network operation centers
or broadcast head ends. SL2150 links offer more than an alternative to coaxial cabling in
teleport earth stations. They have been designed to provide very low carrier-to-noise ratio
and extremely linear performance. This means a cost effective technically superior
installation for the satellite signal user. Multidyne systems have been engineered to give
industry-leading performance when compared with any other fiber optic link. Only SL2150
links have ultra wide dynamic range so that automatic gain control is not required to cope
with changing signal intensity caused by meteorological conditions. A range of options to suit
a variety of installations is offered, such as 75Ω or 50Ω impedance with either BNC or F
connectors. The standard link utilizes a high performance DFB laser, but for less demanding
short haul applications, a lower cost FP laser option is available. For installations where the
number of cross site fiber connections is limited the complete ITU range of CWDM
transmitter wavelengths is offered allowing up to 8 channels to be carried on one fiber.
Optical connector options include ST, LC, FC, or LC APC.
FEATURES and OPERATION
FEATURES:
• L-Band RF 950-2150 Mhz to optical fiber signal conversion
• Up to 50Km range using DFB optics
• 9 dB RF gain from FTX to FRX
• 20 dB Noise Figure
• LNB current up to 400mA
• Long Line Compensation (LCC) feature for LNB power
• LNB selectable polarity using 13V or 18V power
• LO Hi band selector using 22 KHz tone
• 75 Ohm F or 50 Ohm BNC connectors
• ST, LC, FC, or LC APC optical connectors
• Universal 9 to 24V DC power source independently of LNB Power needs.
• Menu Driven Front Panel Display for status and parameter selection
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Instruction Manual, SL2150 Series
Figure
1
. Front and Back of SL2150
-
FTX
OPERATION:
TRANSMITTER, SL2150-FTX
The transmitter module front and back is shown in figure 1.
FEATURES and OPERATION 2
The FTX front panel has a POWER LED that glows green when power is applied. The
POWER LED will flash red if there is a fault. The user may consult the status screens, below,
for details on the fault. The FTX also has a menu driven display and a joystick button labeled
SELECT for menu navigation and setting. There is also an infrared sensor on the front panel.
Normally the display is off to conserve power and display life. The IR sensor detects motion
and turns on the display when your hand is brought near the front panel. After a few
moments of inactivity, the display goes to a screen saver for a few minutes, after which it is
once again shut off. If the display is off, bringing your hand near the front panel will restore
the display to the screen saver. Pressing the SELECT button will restore the menus.
The FTX rear panel has a coaxial POWER jack for connecting 9~24VDC power. Connect a
suitable power source to this input, such as the included AC adapter or other source. There is
also a RF IN connector to which you would connect the coaxial cable to your satellite dish.
LNB power is also output over this cable. Up to 400ma of LNB current is permitted. This
connector is either a 75 ohm F or a 50 ohm BNC depending on model. Finally you would
connect a suitable fiber going to the FRX to the OPTICAL OUTPUT connector. Be sure to
use only fibers with APC connectors. Using UPC fibers could damage the unit if the fiber is
forced into the connector.
The FTX display has screens showing Power Status, Link Status, Display Configuration
and Link Configuration. To navigate between the screens, press on the left or right edge of
the SELECT button. Only the config screens have parameters you can set. Once you are in
one of these screens, press the upper or lower edges of the SELECT button to move up and
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Instruction Manual, SL2150 Series
FEATURES and OPERATION 3
down the list to highlight the parameter you wish to change. When the desired parameter is
highlighted, press the right or left edges of SELECT to cycle thru the settings. When you
have arrived at the desired setting, push SELECT straight in to invoke it. Doing so will also
cause any further left/right pressings to revert back to screen-to-screen navigation. If you
wish to stay within the screen to adjust other settings, only press SELECT up or down to
highlight other parameters in the screen you might wish to change. If you do so and highlight
a different parameter, the left/right pressings will remain in the parameter setting mode. To
revert to left/right screen-to-screen navigation, press SELECT straight in on a selection. The
status screens are “read-only” and they also show whether or not a parameter is in error. If
there is an error, the parameter will be shown in red, and the POWER LED will also be
flashing red. If there is no error, both the parameter and the POWER LED will be green.
The Power Status screen for the FTX shows the unit’s supply voltage (MAIN PWR) and the
LNB voltage (LNB PWR) going to the dish. If a parameter is within spec, it will be shown in
green, otherwise it will be red. Examples showing good and bad LNB power are shown
below:
The Link Status screen for the FTX shows the LASER current in mA and if the LASER
STATUS is good. If a parameter is in spec, it will be shown in green, otherwise it will be red.
An example is shown below:
The Display Configuration screen allows one to set the intensities of the RED, GREEN and
BLUE pixels of the display from 0 to 255. There are also settings for the seconds of inactivity
after which the SCReen SAVER will appear, and for the minutes of inactivity after which the
SCReen will shut OFF entirely. Bringing your hand near the front panel will restore the screen
saver. Pressing the SELECT button will restore the menu. An example of the Display Config
screen is shown below, along with the screen saver:
The Link Configuration screen allows one to choose the POLarity PoWeR to the dish,
either HOR (18V) or VER (13V). It also allows one to choose Long Line COMPensation to be
ON or OFF and HI band 22KHZ mode ON or OFF. Long Line Compensation adds an extra
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Instruction Manual, SL2150 Series
Figure
2. Front and Back of SL2150
-
FRX
FEATURES and OPERATION 4
1V to the polarity power voltages to offset any voltage drop caused by long coax cable runs.
This change in LNB voltage will also be reflected on the Power Status screen. An example
of the Link Config screen is shown below:
RECEIVER, SL2150-FRX
The receiver module front and back is shown in Fig 2.
The FRX front panel features and functionality are identical to those of the FTX. The rear
panel has the same POWER input as the FTX. The OPTICAL INPUT connector is for
connecting the fiber from the FTX. As with the FTX, use only fibers with APC connectors. The
RF-OUT connector is for connection of a 50 or 75 ohm coax for your L-band RF output. As
with the FTX, connector types are dependent on model.
The FRX display screens are similar to those of the FTX with the exception that there are
only 3 screens: Power Status, Link Status, and Display Config. Navigation is as described
in the FTX section. The Display Configuration screen is identical to that of the FTX. The
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Instruction Manual, SL2150 Series
Power Status screen for the FRX differs from the FTX in that only MAIN PWR is shown. An
example of the FRX Power Status screen is shown below:
The Link Status screen for the FRX differs from that of the FTX in that instead of laser
current and status, effective link gain is displayed as INPUT, along with received RF SIGnal
STATUS. Sufficient link gain from FTX to FRX is needed for good RF signal integrity. As with
the other status screens, parameters in spec will be shown in green, otherwise they will be
red. Below are some examples of displays where both the link gain and RF output signal
integrity are good; where the link gain has degraded but not yet to the point where RF output
signal integrity is impaired; and finally an example where link gain has degraded to the point
where RF output signal integrity is impaired. Link gain should be between -8 to +9dB.
APPENDIX A. Block Diagrams 5
INSTALLATION
The SL2150 Series operates from 85 to 240 VAC with the included wall-mount 12V power
supply or other source in a range from 9 to 24 VDC and at least 10W of power. It uses a
coaxial type connector (sleeve ground) on the rear panel labeled POWER. If desired, the
units can be powered from a battery pack or automotive battery instead of the wall unit.
If the dish uses LNB power, it should be connected to RF-IN before power is applied to the
FTX. Otherwise, hot-plugging the dish to RF-IN may cause the power supply overcurrent
protection to trip, and a fault condition to occur as evidenced by the POWER LED flashing
red. If this happens, remove power to FTX and try again after a few minutes. Once the dish is
connected to RF-IN, the SL2150 Series does not have any special sequencing requirements
for connection of fiber, RF-OUT, or power. RG58/59 or other 50/75 ohm coax cable must be
used for the RF inputs and outputs, and single mode fiber with the proper APC connectors
must be used for the fiber link. Multimode fiber cannot be used reliably with the SL2150
series. The SL2150 Series come standard as stand-alone units. An optional rack-mounting
kit is available to mount up to 3 units in a 1 Rack-unit or 1 ¾” by 19” rack space. The part
number is –RMT.
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Instruction Manual, SL2150 Series
Optical IN
22KHZ Ind.
APPENDIX A. Block Diagrams
LBAND TX BLOCK DIAGRAM
12V Sense
Laser fail
Laser current
CPU
APPENDIX A. Block Diagrams 6
FRONT DISPLAY
H or V Ind.
Laser Failure
Laser Current
LLC
Display settings
DC IN
9 to 24V
RF IN
75 ohm F
or 50 ohm BNC
12V 1A
Sepic Converter
3.3V 0.6A
Buck Converter
for
CPU & Display
RF to Optical
Conversion & LNB
Power Insertion
LNB POWER
H/V/22KHZ
Control Joystick
4 pos + Push
Motion Sensor
LED
Power
PIR
Optical Out
APC FC
LBAND RX BLOCK DIAGRAM
FRONT DISPLAY
Signal status
Optical level
Display Settings
LED
Power
RF Out
50 ohm BNC
or 75 ohm F
APC FC
12V Sense
Signal status
Optical level
Optical to RF
Conversion
CPU
Control Joystick
DC IN
9 to 24V
12V 1A
Sepic Converter
3.3V 0.6A
Buck Converter
for
CPU & Display
4 pos + Push
PIR
Motion Sensor
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Instruction Manual, SL2150 Series
APPENDIX B. Technical Specifications 7
APPENDIX B. Technical Specifications
General
Dimensions (LxWxH): .............................................. 7.09"x5.57"x1.52" (141x180x37mm)
Weight (Each end) ..................................................... 24 oz (0.68Kg)
Operating Temperature Range .................................. 0° C to +50°C
Relative Humidity ....................................................... 0 to 95%
Storage Temperature Range ..................................... -20° C to +70°C
Frequency Range ...................................................... 950 – 2150 MHz
Flatness ..................................................................... +/- 1.25 dB
IMD ............................................................................ -62 dBc
CNR ........................................................................... 56 dB
Gain Stability ............................................................. 0.25 dB
RF Link Gain (short distance) .................................... 9dB +/- 3dB
Noise Figure .............................................................. 20 dB
Link budget (Standard DFB) ...................................... Up to 50Km
Transmitter (-FTX)
Power: ...................................................................... 9-24V / 10W
Wavelength (Standard DFB)...................................... 1310nm Single Mode
Wavelength (CWDM or 1550nm option) .................... 1470 to 1610nm
Optical Power ........................................................... 4.5 dBm
Laser Safety ............................................................. Class 1
Optical Connector ...................................................... APC ST, FC, SC, or LC
RF Input .................................................................... F 75 Ohms / BNC 50 Ohms
Return Loss .............................................................. >15dB
LNB voltages (LCC off) .............................................. 13V Vert. / 18V Hor.
LNB voltages (LCC on) .............................................. 14V Vert. / 19V Hor.
Max LNB current ........................................................ 400ma.
Universal LNB (LO control) ........................................ 22 KHz
Indicators .................................................................. Power, 22KHz, Polarity, Laser
.................................................................................. Current/Status, Long Line Comp.
Receiver (-FRX)
Power: ...................................................................... 9-24V / 5W
Wavelength ............................................................... 1100 to 1600nm
Optical Sensitivity ..................................................... -16dBm
Optical Connector ...................................................... APC ST, FC, SC, or LC
RF Output .................................................................. F 75 Ohms / BNC 50 Ohms
Return Loss .............................................................. >15dB
Max Input Power ........................................................ +15dBm
Indicators .................................................................. Power, Optical Power, Signal Status
Specifications are subject to change without notice.
REV A, Sep 21, 2011
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