Nevion LB-OE User Manual Rev.E

LB-OE

L-BAND Optical to Electrical Converter

User manual

Rev. E

Nevion

nevion.com

Nordre Kullerød 1
3241 Sandefjord
Norway
Tel: [phone]

LB-OE Rev. E

Nevion Europe
P.O. Box 1020

3204 Sandefjord, Norway
Support phone 1: [phone]
Support phone 2: [phone]

Nevion USA

1600 Emerson Avenue

Oxnard, CA 93033, USA

Toll free North America: [phone]

Outside North America: +1 (805) 247-

8560

E-mail: [e-mail]

See http://www.nevion.com/support/ for service hours for customer support globally.

Rev.

Repl.

Date

Sign

Change description

E 4 2015-05-12

MB

Cover page update.
Removed Declaration of Conformity.
No other changes to content.

4 3 2011-02-21

AA

New template.
Updated Declaration of Conformity.
Removed Chapter 2.5 (Environmental
conditions).

3 2 2008-04-01

GMW

Added connector interface description and more
application details in product overview. Added
Declaration of Conformity.

2 1 2007-11-01

GMW

Changed maximum optical input from 0dBm to

-3dBm

1 0 2007-09-25

GMW

Changed optical budget to 16dB for 15T/CWDM
and 6dB for 13T

0 A 2007-03-29

GMW

First official version

A - 2006-05-01

GMW

Preliminary version

Nevion Support

Revision history

Current revision of this document is the uppermost in the table below.

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LB-OE Rev. E

Contents

Revision history ...................................................................................................................... 2

1 Product overview ................................................................................................................. 4

2 Specifications ................................................................................................ ...................... 6

2.1 RF Characteristics ............................................................................................................ 6

2.2 LNB Power Connector ...................................................................................................... 6

2.3 Optical Characteristics ...................................................................................................... 6

2.4 Power consumption .......................................................................................................... 6

3 Configuration ................................ ................................................................ ....................... 7

3.1 Format configuration ........................................................................................................ 7

4 Connections ........................................................................................................................ 8

4.1 Mounting the connector module ....................................................................................... 8

4.2 Terminal format support ................................................................................................... 9

5 Module status .................................................................................................................... 10

5.1 GPI Alarm – Module status outputs ................................................................ ................ 10

5.2 Front panel – Status monitoring ...................................................................................... 11

6 Laser safety precautions ................................................................................................... 12

General environmental requirements for Nevion equipment ................................................. 13

Product Warranty ................................................................................................................. 14

Appendix A Materials declaration and recycling information ................................................. 15

A.1 Materials declaration ...................................................................................................... 15

A.2 Recycling information ..................................................................................................... 15

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LB-OE Rev. E

1 Product overview

The Flashlink LB-OE is an optical to electrical converter module providing high
performance media conversion for analogue signals with bandwidth from 950 to 2150
MHz. This state of the art unit offers a high sensitivity PIN diode technology followed by
amplifiers with low noise, low distortion and capable of amplifying large signal levels.
The attenuator is a high performance digitally controlled device, giving low distortion
and flat frequency response. The LB-OE is therefore the first choice for all optical
transport demands on L-band.

The LB-OE together with LB-EO, can transport all L-band signals between 950 and
2150 MHz over large distances using fiber optical transport media. The optical input
comes with a sophisticated wideband PIN diode with a sensitivity typically better than –
20dBm operating in the 2nd and 3rd optical windows. The open system platform of
Network Electronics Flashlink system allows easy interoperability with third party fiber
optical systems.

There is also an attenuated monitor output for test and service purposes as well as a
remote control interface.

Figure 1: LB-OE L-band O/E converter.

This L-band link is normally used in conjunction with other equipment like satellite
tuners, LNBs in parabolic dishes etc, and the link performance is dependant of good
signal to noise ratio from the signal source and good noise figure of the receiver
equipment. The link quality is also dependant of the number of channels transferred on

the link. For instance, the link’s signal to noise ratio is reduced with 3dB when doubling

the number of the channels (twice the power).
An optical link will add some noise to the signal. The amount of noise is dependant of

the fiber loss, the satellite receiver sensitivity, number of channels and the total power
level of the signal. The combination if analogue and digital satellite signals is also
important. Many analogue satellite signals (which tend to have higher power), will

reduce the signal to noise ratio on the digital signals. This is because the link’s power

must be reduced according to the total power of the link.
Noise figure of the link is a number usually in dB that states how much the signal to

noise ratio (S/N ratio) is reduced from the input to the output. If the S/N ratio from the
dish is X dB, the noise figure on the link is Y dB, the S/N ratio on the output will be X-Y
dB. Dependant on the application (fiber loss, total power on signal and power of the
laser), one link will typically add 4-5dB noise for fiber distances less than 3000 meters.

A coaxial cable will attenuate more on higher frequencies than lower. If the attenuation
on 2GHz is more than the noise figure for the L-band link, there will be a system

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LB-OE Rev. E

improvement regarding total signal to noise ratio. Therefore, to distance from the dish
to the receiver must be significant (more than 200 meters, dependant of the coaxial
cable specification) for getting return of the investment of the L-band link. If the
application needs galvanic isolation, the L-band link is a very good way to achieve this
functionality.

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LB-OE Rev. E

Frequency band width

950-2150 MHz

Return loss

>10dB

RF interface

F-connector

Monitor interface

BNC (attenuated signal for connection to spectrum analyzer)

Gain flatness

±1.5dB over entire band
±0.25dB at any 36 MHz

Maximum output signal

> -5dBm

Inter modulation products

< -55dBc with two carriers –20dBm input signal,
5dB fiber loss

Link gain

40dB

Optical link budget

16dB/50km (with LB-EO-15T/LB-EO-C1xxx)
6dB (with LB-EO-13T)

1dB compression (output)

0dBm

Noise figure

<10dB @ 3dB fiber optical loss
<20dB @ 16dB fiber optical loss

Carrier to noise ratio (CNR)

>45dB with maximum input power @ 36MHz (with LB-EO­15T/LB-EO-C1xxx)
>35dB with maximum input power @ 36MHz (with LB-EO­13T)

Spurious free dynamic
range (SFDR)
(typically -25dBm)

>110dBc/Hz
Power connector

Not used on LB-OE

Wavelength

1270-1610 nm

Maximum input power

-3 dBm

Optical interface

SC/UPC, Single mode

Maximum power
consumption:

<3W (+5V)
<1.5W (-15V)
<1.5W (+15V)

2 Specifications

2.1 RF Characteristics

2.2 LNB Power Connector

2.3 Optical Characteristics

2.4 Power consumption

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LB-OE Rev. E

Switch #

Label

Function, DIP = ON

Function, DIP =

OFF

Comment

1

AGC

Automatic gain
control

Manual gain control

2

R/S

Run AGC

Sample AGC level

Only valid in
Automatic gain
control mode

3

Not used

4

Not used

5

Not used

6

Not used

7

Not used

8

OVR

Override GYDA
control. Config. with
DIP switch

GYDA control.
Config. with GYDA

Select configuration
from GYDA

3 Configuration

3.1 Format configuration

The LB-EO can be used in different user application, depending on the user wants
automatic gain control, fixed gain or automatically adjusted once and then fixed. The
correct configuration can either be set with a DIP switch or with the GYDA Control
System. The layout of LB-EO is shown in the drawing below with the DIP switch to the

upper left position.

Figure 2: LB-OE board layout.

DIP switch configuration must be set according to the table below:

All DIP switches are off when pointing towards the release handle.

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LB-OE Rev. E

4 Connections

The Flashlink LB-OE has a dedicated connector module: LB-EO-C1. This module is
mounted at the rear of the sub-rack. The module is shown in the figure below.

Monitor Fiber optical
output

RF input

LNB power supply GPI

Figure 3: Connector module for L-band.

In typical use, an LB-EO / LB-OE module at each end will be used. An LNB is
connected to the F-connector of the LB-EO, and a satellite tuner is connected to the F­connector of the LB-OE. The voltage/22kHz output from the satellite tuner, cannot be
transferred on the fiber between LB-EO and LB-OE, because this signal goes the other
way. The LB-OE can nevertheless detect voltage and/or tone, and put them to the GPI
output on the LB-OE. Using a separate communication line (two digital signals using
D422MG or similar), these signals can be transferred to the LB-EO. Another alternative
is controlling the LB-EO directly using either Gyda or GPI inputs.

The LB-OE will always detect the voltage/tone from the satellite tuner or other
equipment, and set the GPI according to the detected tone and voltage. A 22 kHz tone
on top of the LNB power supply indicates high band (11.7-12.75 GHz) and no tone is
for low band (10.7-11.7 GHz).

Vertical polarization is chosen with a voltage less than 15 volts, typically 13 volts. Most
LNBs will set vertical polarization within a voltage window (for instance from 11.5 to

14.2 volts dependant of the LNB). Accordingly the horizontal polarisation is voltage
greater than 15 volts, typically 18 volts (for instance from 15.8 to 19.0 volts). If the
voltage is near 15 (for instance between 14.2 and 15.8), the polarization will be
uncertain. The example voltages are LNB manufacturer dependant; please check the
user manual for the LNB voltage thresholds.

4.1 Mounting the connector module

The details of how the connector module is mounted, is found in the user manual for
the sub-rack frame FR-2RU-10-2.

This manual is also available from our web site: http://www.nevion.com/

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LB-OE Rev. E

Terminal

Function

Supported Format

Mode

OPT

Optical Input

Analogue 950-2150
MHz

Input

RF

Electrical Output

Analogue 950-2150
MHz

Output

GPI Output

Control High/low
band and polarity

Digital Output

Output
GPI Input

Data Input

Digital Input

CMOS Input

GPI
ALARM

Open Collector
Alarms

Wired alarms

OC Output

4.2 Terminal format support

The different input and output ports on LB-OE can support a number of formats. The
table below shows which signal formats are supported on the selected terminals.

Terminal format support:

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LB-OE Rev. E

Signal

Name

Pin #

Mode

Status

General error status for the module
(open = alarm)

Pin 1

Open Collector
LOS

Loss of Signal (open = signal detected)

Pin 2

Open Collector

LEVEL

Input level too high

Pin 3

Open Collector

H/L

Band select (open = low band = no tone)

Pin 4

Open Collector

H/V

Polarity horizontal/vertical
(open = horizontal = high voltage)

Pin 5

Open collector

DATA

Data input

Pin 6

CMOS Input
(Threshold at 2.5V)

Ground

0 volt pin

Pin 8

0V.

5 Module status

The status of the module can be monitored in three ways.

1. GYDA System Controller (optional).

2. GPI at the rear of the sub-rack.

3. LED’s at the front of the sub-rack.

Of these three, the GPI and the LED’s are mounted on the module itself, whereas the

GYDA System Controller is a separate module giving detailed information on the card
status. The functions of the GPI and the LED’s are described in sections 5.1 and 5.2.
The GYDA controller is described in a separate user manual.

5.1 GPI Alarm – Module status outputs

These outputs can be used for wiring up alarms for third party control systems. The
GPI outputs are open collector outputs, sinking to ground when an alarm is triggered.
The GPI connector is shown in figure below.

LB-OE module GPI pinning:

Figure 4: GPI output.

Electrical Maximums for GPI outputs:
Max current: 100mA
Max voltage: 30V

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LB-OE Rev. E

Diode \ State

Red LED

Green LED

Orange LED

No light

STATUS

Module is faulty,
or module is
initializing.

Module is OK
Module power
is OK

Module has
no power

LOS

No signal

Signal is
present

Module has
no power

LEVEL

Signal level too
high – increase
attenuation or
reduce input level

Signal level
critical - increase
attenuation or
reduce input
level

Signal level
not critical

5.2 Front panel – Status monitoring

The status of the module can be easily monitored visually by the LED’s at the front of

the module. The LED’s are visible through the front panel as shown in the figure below.

Figure 5: Front panel indicators for the LB-OE.

The LB-OE has 4 LED’s each showing a status corresponding to the GPI pinning.

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LB-OE Rev. E

1

6 Laser safety precautions

These are guidelines to limit hazards from laser exposure.
All the available EO units in the Flashlink range include a laser. Therefore this note on

laser safety should be read thoroughly.
The lasers emit light at wavelengths from 1270nm up to 1610nm. This means that the

human eye cannot see the beam, and the blink reflex cannot protect the eye. (The
human eye can see light between 400 nm to 700 nm).

A laser beam can be harmful to the human eye (depending on laser power and
exposure time). Therefore:

Be careful when connecting / disconnecting fiber pigtails (ends).
Never look directly into the pigtail of the laser/fiber.
Never use microscopes, magnifying glasses or eye loupes to look into a

fiber end.
Use laser safety goggles blocking light at 1310 nm and at 1550 nm

Instruments exist to verify light output power: Power meters, IR-cards etc.
Flashlink features:
All the laser module cards in the Flashlink product range, are Class 1 laser products

according to IEC 825-1 1993, and class I according to 21 CFR 1040.10 when used in
normal operation.

More details can be found in the user manual for the FR-2RU-10-2 frame.
Maximum output power1: 5 mW
Operating wavelengths: > 1270 nm

Max power is for safety analysis only and does not represent device performance.

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LB-OE Rev. E

1.

The equipment will meet the guaranteed performance specification under the
following environmental conditions:

-

Operating room temperature
range:

0°C to 40°C

-

Operating relative humidity range:

<90% (non-condensing)

2.

The equipment will operate without damage under the following environmental
conditions:

-

Temperature range:

-10°C to 55°C

-

Relative humidity range:

<95% (non-condensing)

General environmental requirements for Nevion equipment

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LB-OE Rev. E

Product Warranty

The warranty terms and conditions for the product(s) covered by this manual follow the
General Sales Conditions by Nevion, which are available on the company web site:

www.nevion.com

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LB-OE Rev. E

組成名稱

Part Name

Toxic or hazardous substances and elements

鉛

Lead

(Pb)

汞

Mercury

(Hg)

镉

Cadmium

(Cd)

六价铬

Hexavalent

Chromium

(Cr(VI))

多溴联苯

Polybrominated

biphenyls

(PBB)

多溴二苯醚

Polybrominated

diphenyl ethers

(PBDE)

LB-OE O O O O O O

O: Indicates that this toxic or hazardous substance contained in all of the homogeneous materials for this part is
below the limit requirement in SJ/T11363-2006.

X: Indicates that this toxic or hazardous substance contained in at least one of the homogeneous materials used
for this part is above the limit requirement in SJ/T11363-2006.

Appendix A Materials declaration and recycling
information

A.1 Materials declaration

For product sold into China after 1st March 2007, we comply with the “Administrative

Measure on the Control of Pollution by Electronic Information Products”. In the first
stage of this legislation, content of six hazardous materials has to be declared. The
table below shows the required information.

This is indicated by the product marking:

A.2 Recycling information

Nevion provides assistance to customers and recyclers through our web site

http://www.nevion.com/. Please contact Nevion’s Customer Support for assistance with

recycling if this site does not show the information you require.
Where it is not possible to return the product to Nevion or its agents for recycling, the

following general information may be of assistance:

 Before attempting disassembly, ensure the product is completely disconnected

from power and signal connections.

 All major parts are marked or labeled to show their material content.
 Depending on the date of manufacture, this product may contain lead in solder.
 Some circuit boards may contain battery-backed memory devices.

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