Motorola GX2 EA1000C Series User manual

b
User Guide
GX2 EA1000C*/*
Multi-Wavelength DWDM 1550 nm Laser
Transmitter

MOTOROLA and the Stylized M logo are trademarks or registered trademarks of Motorola Trademark Holdings, LLC. All
other product or service names are the property of their respective owners. ©2012 Motorola Mobility, Inc. All rights
reserved.
No part of this publication may be reproduced in any form or by any means or used to make any derivative work (such as
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revise this publication and to make changes in content from time to time without obligation on the part of Motorola to
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expressed, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.
Motorola may make improvements or changes in the product(s) described in this manual at any time.

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Compliance/Regulatory
Caution
These servicing instructions are for use by qualified personnel only. To reduce the risk of electrical shock, do not
perform any servicing other than that contained in the Installation and Troubleshooting Instructions unless you are
qualified to do so. Refer all servicing to qualified service personnel.
Special Symbols That Might Appear on the Equipment
DANGER
This is a class I product that contains a class IIIb laser and is intended for operation in a closed
environment with fiber attached. Do not look into the optical connector of the transmitter with
power applied. Laser output is invisible, and eye damage can result. Do not defeat safety
features that prevent looking into the optical connector.
This product contains a class IIIb laser and is intended for operation in a closed environment
with fiber attached. Do not look into the optical connector of the transmitter with power
applied. Laser output is invisible, and eye damage can result. Do not defeat safety features
that prevent looking into optical connector.
This symbol indicates that dangerous voltage levels are present within the equipment. These
voltages are not insulated and may be of sufficient strength to cause serious bodily injury when
touched. The symbol may also appear on schematics.
The exclamation point, within an equilateral triangle, is intended to alert the user to the
presence of important installation, servicing, and operating instructions in the documents
accompanying the equipment.
For continued protection against fire, replace all fuses only with fuses having the same
electrical ratings marked at the location of the fuse.
i

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Caring for the Environment by Recycling
When you see this symbol on a Motorola product, do not dispose of the product with residential
or commercial waste.
Recycling your Motorola Equipment
Please do not dispose of this product with your residential or commercial waste. Some countries
or regions, such as the European Union, have set up systems to collect and recycle electrical and
electronic waste items. Contact your local authorities for information about practices
established for your region. If collection systems are not available, call Motorola Customer
Service for assistance.
FCC Compliance
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the Installation Manual, may cause harmful interference to
radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which
case the user will be required to correct the interference at his/her own expense.
Caution: Any changes or modifications not expressly approved by Motorola could void the user’s authority to operate
this equipment under the rules and regulations of the FCC.
Canadian Compliance
This Class A digital device complies with Canadian ICES-003
Cet appareil numérique de la classe A est conforme àla norme NMB-003 du Canada.

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FDA Compliance
This product meets the requirements of the Code of Federal Regulations, Title 21, Chapter I, Subchapter J, Sections
1010.2, 1010.3, 1040.10, and 1040.11
CLASS 1 LASER PRODUCT
Declaration of Conformity
We Motorola Mobility, Inc.
101 Tournament Drive
Horsham, PA 19044, U.S.A.
declare under our sole responsibility that the
Multi-Wavelength DWDM 1550 nm Laser
Transmitter
Model GX2 EA1000C*/*
to which this declaration relates is in conformity with one or more of the following standards:
EMC Standards
EN55022 EN55024 EN50083-2 CISPR-22 CISPR-24
Safety Standards
EN60065 EN60825 EN60950 IEC 60950 + A1: 1992 + A2: 1993 + A3: 1995 +
A4: 1996
following the provisions of the Directive(s) of the Council of the European Union:
EMC Directive 89/336/EEC Low Voltage Directive 73/23/EEC WEEE Directive 2002/96/EC

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Contents
Compliance/Regulatory ................................................................................................................. i
Tables............................................................................................................................................. vi
Figures ........................................................................................................................................... vi
Introduction.................................................................................................................................... 1
Related Documentation................................................................................................................... 3
Getting Help..................................................................................................................................... 4
Customer Service (order entry)................................................................................................. 5
Replacement Parts.................................................................................................................... 5
Repair ........................................................................................................................................ 5
Overview ........................................................................................................................................ 6
Module Description ......................................................................................................................... 7
Operating Modes........................................................................................................................... 10
AGC Modes............................................................................................................................. 10
MGC Modes............................................................................................................................ 10
Quick-Swap Module Configuration ......................................................................................... 10
Additional Features ........................................................................................................................ 11
RF Section ..................................................................................................................................... 11
Embedded Section ........................................................................................................................ 12
Communication Interfaces ............................................................................................................ 12
Front-Panel..................................................................................................................................... 13
Rear Panel...................................................................................................................................... 15
Installation and Setup................................................................................................................. 17
Before You Begin........................................................................................................................... 17
Unpacking the GX2-EA1000C*/*................................................................................................... 18
Installing the RF Interface Connectors (if required)....................................................................... 18
Cleaning the GX2-EA1000C*/* Optical Bulkhead Fitting............................................................... 19
Cleaning the Interface Fiber Jumper SC/APC Connector.............................................................. 20
Inserting the SC/APC Connector ................................................................................................... 21
Installing the GX2-EA1000C*/* in the GX2-HSG* ......................................................................... 22
Power-Up and Reset Initialization.................................................................................................. 24
Measuring and Checking the Optical Output Power..................................................................... 25
Measuring and Checking the RF Input Signal Levels .................................................................... 26
Protecting the Laser................................................................................................................ 27
Operating Modes........................................................................................................................... 28
MGC Modes............................................................................................................................ 28
AGC Modes............................................................................................................................. 29
Operation...................................................................................................................................... 30

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Embedded Section ........................................................................................................................ 30
Boot Operation .............................................................................................................................. 30
Operating Modes........................................................................................................................... 30
AGC Modes............................................................................................................................. 31
MGC Modes............................................................................................................................ 32
Additional Controls and Configurations ......................................................................................... 33
Optical Output Control ............................................................................................................ 33
RF Drive Level Control ............................................................................................................ 33
Quick Swap ............................................................................................................................. 33
Implementing a Reduced Channel Load ....................................................................................... 34
Implementing an Increased Channel Load .................................................................................... 35
Using Set Mode ...................................................................................................................... 36
Using Manual Mode................................................................................................................ 36
Using Preset Mode (with AGC control in the GX2-EA1000C*/* and each node) ................... 36
Using Preset Mode (with AGC control in the GX2-EA1000C*/* only).................................... 37
Network Management .................................................................................................................. 37
Operating the GX2-EA1000C*/* with the Optional SDU............................................................... 40
Downloading New Firmware......................................................................................................... 40
Full Spectrum Multi-Wavelength Application ................................................................................ 41
Dispersion Compensation ............................................................................................................. 41
Troubleshooting .......................................................................................................................... 42
Using the Status LED .................................................................................................................... 42
Using Available Options................................................................................................................. 44
Specifications............................................................................................................................... 47
RF .................................................................................................................................................. 47
Optical............................................................................................................................................ 47
Power ............................................................................................................................................ 47
Environmental................................................................................................................................ 47
Physical.......................................................................................................................................... 48
GX2-EA1000C*/* Models.............................................................................................................. 49
Menus ........................................................................................................................................... 50
RF/OPTICAL Menu ........................................................................................................................ 51
MODULE STATUS Menu .............................................................................................................. 51
MODULE INFO Menu ................................................................................................................... 52
Status Reporting.......................................................................................................................... 53

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Tables
Table 1: Minimum GX2-HSG* Equipment-Shelf Configuration ....................................................... 7
Table 2: GX2-EA1000CC*/* Front Panel Features ........................................................................ 14
Table 3: GX2-EA1000C*/* Rear Panel Features............................................................................ 16
Table 4: GX2-EA1000C*/* Alarm Conditions................................................................................. 38
Table 5: Troubleshooting using the status LED only ..................................................................... 43
Table 6: Troubleshooting — Using Available Options ................................................................... 45
Table 7: Using the GX2-EA1000C*/* Menus ................................................................................ 50
Table 8: Event/Alarm messages for the GX2-EA1000C*/* Transmitter........................................ 53
Figures
Figure 1: GX2-EA1000C*/* Transmitter Front Panel ....................................................................... 1
Figure 2: Fully populated GX2-HSG* equipment shelf .................................................................... 2
Figure 3: GX2-HSG* ........................................................................................................................ 6
Figure 4: GX2-EA1000C*/* Block Diagram ..................................................................................... 8
Figure 5: GX2-EA1000C*/* Front and Rear Side Views .................................................................. 9
Figure 6: GX2-EA1000C*/*front panel .......................................................................................... 13
Figure 7: GX2-EA1000C*/* Rear Panel.......................................................................................... 15
Figure 8: Installing the RF interface connectors on the rear of the GX2-HSG* ............................ 18
Figure 9: Cleaning the Barrel of the Optical Bulkhead Fitting ....................................................... 20
Figure 10: Cleaning the SC/APC connector tip.............................................................................. 20
Figure 11: Inserting the SC/APC connector................................................................................... 21
Figure 12: Typical GX2-HSG* Configuration.................................................................................. 22
Figure 13: GX2-EA1000C*/* installation in a GX2-HSG*............................................................... 23
Figure 14: Inserting the GX2-EA1000C*/* in the GX2-HSG* ........................................................ 24
Figure 15: GX2-HSG*rear-panel RF connections........................................................................... 27
Figure 16: GX2-EA1000C*/* Model Number Conventions ........................................................... 49

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Introduction
The OmniStar®GX2 is a fiber optic broadband transmission platform for headend and
hub locations that supports advanced broadband hybrid-fiber/coax telecommunications
systems. The OmniStar GX2 platform includes a complete line of headend fiber optic
products designed to transport video and data signals in CATV systems and related
applications. The OmniStar GX2 platform is flexible in its application and includes a series
of modules and options that you can select to accommodate system requirements.
This manual describes the GX2-EA1000C*/* RoHS compliant, high-performance, Multi-
Wavelength DWDM 1550 nm distributed feedback (DFB) laser transmitters. This series
has a range of wavelength options to accommodate various systems designs. The
output power is 9 dBm and can be optically amplified through an EDFA for higher launch
powers.
The GX2-EA1000C*/* has one primary RF input for broadcast and one secondary RF
input for narrowcast applications. It is capable of transmitting a mix of analog and digital
channels from 52 MHz to 1 GHz through a front-panel optical output connector. It also
has a front-panel RF test point and a front-panel LED that provides status and alarm
information.
Figure 1: GX2-EA1000C*/* Transmitter Front Panel
1

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An internal microprocessor controls and monitors the GX2-EA1000C*/*. Remote control
is implemented through the GX2-HSG* backplane by the GX2-CM100B control module,
which can receive input from a variety of sources. Using status monitoring software, you
can electronically update the firmware without removing the GX2-EA1000C*/* from the
equipment shelf.
Different OmniStar GX2 application modules can be intermixed in the 16-slot GX2-HSG*.
For illustrative purposes, Figure 2 depicts a GX2-HSG* populated with 16 GX2* modules,
and a GX2-CM100B control module.
Figure 2: Fully populated GX2-HSG* equipment shelf
For more information regarding this product or other OmniStar GX2 modules, consult the
Motorola product catalog or visit the web site: http://www.motorola.com/broadband.

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Related Documentation
The following documents provide information that is required for products that can be
used with the GX2-EA1000C*/*:
•GX2-HSG* Equipment Shelf Installation and Operation Manual
•GX2-CM100B Control Module Installation and Operation Manual
•GX2-PSAC10*-R AC Power Supply Installation and Operation Manual
•GX2-PSDC10*-R DC Power Supply Installation and Operation Manual
Although these documents provide information that may be of interest to you, they are
not required to install or operate the GX2-EA1000C*/*:
•GX2-RX1000C Forward Path Receiver Installation and Operation Manual
•GX2-RX200BX2 Dual Return Path Receiver Installation and Operation Manual
•GX2-RX200BX4 Quad Return Path Receiver Installation and Operation Manual
•GX2-SDU100B Shelf Door Unit Installation and Operation Manual
•GX2-OA100* Optical Amplifier Installation and Operation Manual
•GX2-EM1000C* Externally Modulated Broadcast Transmitter Installation and
Operation Manual
•GX2-DM1000C* Directly Modulated Forward Path Transmitter Installation and
Operation Manual
•GX2-RSW200B RF Switch Installation and Operation Manual
•GX2-OSW10B Optical Switch Installation and Operation Manual
•GX20OA508B21 Gain Flattened Optical Amplifier Installation and Operation Manual
•Web Browser Interface Instruction Sheet

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Getting Help
To get assistance with your Motorola product or solution, or to access learning materials,
use one of the following channels:
Technical Assistance Center (TAC) provides access to technicians 24 hours a day, 7
days a week for all products. Contact the TAC at 888-944-HELP (888-944-4357) or dial
direct 847-725-4011. For specific toll-free numbers when calling from outside the United
States, please refer to the table in this manual or our Web page.
Motorola On-Line at http://mobilityonline.motorola.com provides access to order entry,
repair status, warranty tracking, and your portal to Motorola's Customer Care. There you
can view and create cases online as well as search, view, and download customer
documentation, such as user manuals and installation guides, or search our knowledge
database for common solutions to today's problems.
Learning Portal provides self-paced product training and course descriptions of
instructor-led training classes at http://www.motorolatraining.com. In many cases
training can be given at your location.
Digital Configuration Management provides access to software downloads and
release notes. Or you can order from our digital configuration management servers by
going to http://digitalcm.motorola.com.
Country Phone Number Country Phone
Number
Belgium 0-800-72-163 Luxembourg 0-800-2-5310
Denmark 80-88-6748 Netherlands-Holland 0-800-022-0176
Finland 0-800-114-263 Norway 800-15-670
France 0-800-90-7038 Poland 00-800-111-3671
Germany 0-800-18-73019 Portugal 800-81-3461
Hungary 06-800-18164 Spain 900-99-1771
Ireland 1-800-55-9871 Sweden 020-79-0241
Israel Golden
Lines
Israel Bezeq
Israel Barak
1-809-25-2071
1-809-42-9181
1-809-31-5435
Switzerland 0-800-561-872
Italy 800-788-304 United Kingdom 8-800-404-8439
All other countries [phone]

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Customer Service (order entry)
800-523-6678
Replacement Parts
Distribution Products: NCS http://www.ncsind.com 800-523-2342
Terminal Products: 800-227-0450
Repair
If repair is necessary, call the Motorola Technical Support Call Center for assistance in
verifying that the item is defective. The TSCC will create an RSA for repair or an RA for
replacement if equipment qualifies.
When shipping equipment for repair:
1. Pack the unit securely.
2. Enclose a note describing the exact problem. Complete and enclose the checklist
provided with the unit.
3. Enclose a copy of the invoice that verifies the warranty status.
4. Ship the unit PREPAID to the address supplied in your RSA or RA.

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Overview
OmniStar GX2 equipment is designed for increased rack density, reliability, ease of
operation, and computer-aided troubleshooting through extensive network management.
All OmniStar GX2 modules are accessible and replaceable from the front of the
GX2-HSG* equipment shelf, resulting in low time-to-repair. An installed module mates
with the equipment shelf connectors for signal interfacing and power. Fiber connections
are made at the front of a module.
The OmniStar GX2 housing incorporates blind-mate connectors that enable all modules
to be hot swapped without removing the RF cables. When modules are replaced with
power applied to the equipment shelf, ensure that all laser hazard warnings provided in
Section 3, “Installation” are strictly enforced.
You can install the GX2-EA1000C*/* in any of the sixteen universal slots in the
equipment shelf. The narrow slot on the far right is reserved for the GX2-CM100B
control module.
Although the GX2-HSG* can have a mix of different OmniStar GX2 modules, Figure 3
illustrates an equipment shelf populated with sixteen GX2-EA1000C*/* modules, a
GX2-CM100B control module, and an optional shelf door unit (SDU) with display.
Figure 3: GX2-HSG*
Table 1 describes a minimum GX2-HSG* equipment shelf configuration required for
operating a GX2-EA1000C*/*:
2

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Table 1: Minimum GX2-HSG* Equipment-Shelf Configuration
Component Model Function
Equipment-shelf GX2-HSG* Rack-mountable shelf that houses up to sixteen modules, AC or
DC power supplies, and a control module
Power supply
module
GX2-PSAC10* or
GX2-PSDC10*
The GX2-PSAC10*provides shelf power in an AC powered
system;
the GX2-PSDC10* provides shelf power in a DC system
Control module GX2-CM100B Provides status monitoring and control functions
Laser module GX2-EA1000C*/* Laser transmitter, available in different output powers to fit any
system requirement
Module Description
The GX2-EA1000C*/* provides an optical output used to transport video and data signals
on a broadband HFC network. The GX2-EA-1000C*/* family of transmitters operate in
the C-band wavelength range. These broadcast/narrowcast transmitter modules support
DWDM multi-wavelength downstream transport, providing multiple optical signals for
segmented or fiber deep applications over a single fiber. Each wavelength carries unique
broadcast and narrowcast content and feeds a separate optical receiver. This solution is
intended to accommodate Analog, Digital QAM or a mix of both full loading.
The GX2-EA1000C*/* occupies one application module slot in the GX2-HSG universal
housing. The module is designed for use in broadcast/narrowcast transport applications,
where it accepts Analog and/or QAM-based digital signals and modulates these signals
onto an optical carrier for transmission through a fiber medium. The GX2-EA1000C*/* is
intended for use in a GX2-HSG housing and may be placed either at a headend or hub
location.
The optical output is produced in the module by a DWDM ITU externally modulated
laser. The GX2-EA1000C*/* has a single optical output that can be optically amplified if
needed by application requirements. The trailing digits that replace the asterisks (*/*) in
the model number differentiate the laser module output-power levels and SBS threshold.
Table 7 in Appendix A, “Specifications” identifies the various models of the GX2-
EA1000C*/* and their respective optical outputs.
Each GX2-EA1000C*/* features a state-of-the-art pre-distortion circuit to provide
excellent composite second order (CSO) and composite triple beat (CTB) distortion
performance. During the manufacturing process, the performance of each laser is
characterized and its optimal operating point is stored in non-volatile memory (NVM)
within the unit.

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Figure 4: GX2-EA1000C*/* Block Diagram
A single front-panel mounted RF test point is provided for setup and maintenance of the
module. The test point directly monitors the combined RF input. The rear panel contains
two RF inputs and two cooling fans. Complete descriptions of the front and rear panel
features are provided later in this section.

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Figure 5: GX2-EA1000C*/* Front and Rear Side Views

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Operating Modes
The user can select one of several operating modes depending on the application. The
modes are characterized as either Automatic Gain Control (AGC) or Manual Gain Control
(MGC):
AGC Modes
Each of the following modes uses the AGC function of the module. The specific mode
determines the laser drive level relative to the factory-set reference point:
•Preset — initiates AGC using factory settings for optimal laser performance.
•Set — enables the user to adjust the AGC reference point for specific product
applications or performance requirements.
•Set Equate — places the transmitter in Set mode with the same laser drive level as
Preset. This is useful in resetting the Set mode operating point to a known level.
•CW/Video — this is a variable back-off from the level used to proof the system. This
mode is not a separate mode from Preset or Set but is used in conjunction with
these modes.
MGC Modes
In Manual mode, the attenuator setting is controlled directly and changes the laser drive
level.
•Manual — MGC is a fixed gain that is adjusted by the user.
•Manual Equate — places the module in Manual mode with the attenuator setting
remaining the same as the previous mode. After setting the Preset mode, you can
use manual equate to find the optimum laser drive level before you switch to Manual
mode.
Mode settings are stored in NVM. When powering up, a module reverts to the last
operating mode settings.
Quick-Swap Module Configuration
The quick-swap module configuration saves operators time when replacing application
modules. When selected, the system saves all previous settings for a module and then
automatically downloads those settings to a new module of the same type when it is
installed in the same housing slot. This feature works in conjunction with the
GX2-CM100B module.
Detailed information regarding operating the GX2-EA1000C*/* is provided in Section 4,
“Operation.”

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Additional Features
Functions performed by the GX2-EA1000C*/* include:
•Provides local alarm indication by changing the color of the front-panel STATUS LED
•Stores module identity, laser operating parameters, and set-up information in NVM
•Downloadable firmware to support field upgrades
•Factory birth certificate stored in NVM and accessible through local interfaces
RF Section
The RF input signals are applied to the GX2-HSG* equipment-shelf rear panel. The upper
connector is the main-broadcast input and the lower connector is provided for
narrowcast. The narrowcast input is a convenient method of adding channels to serve
select areas of the cable plant. The narrowcast input must be terminated in 75 ohms
when not in use. Both inputs provide full bandwidth. Gain through the narrowcast input
is -6 dB relative to the main input.
The RF input test point is located on the common path after the main and narrowcast
inputs are combined. This enables verification of the input signals.
Low noise, low distortion gain stages amplify the input signal to the optimum drive level
required for the laser. A programmable attenuator, located midway in the amplifier chain,
is controlled by the microprocessor and, in turn, controls the drive level.
A sample of the RF level is detected after the final gain stage. The output of the RF level
detector is a DC voltage level that corresponds to the total signal power applied to the
laser. There is also a pre-distortion circuit and some equalization in the RF path to help
with distortion levels and signal response.
When in Preset mode, the microprocessor references laser characteristics stored in the
NVM and adjusts the attenuator to apply the optimum RF level to the laser. The power
meter is constantly monitored and the attenuator is adjusted to maintain a constant drive
level into the laser.
Other AGC modes operate in a similar manner but use different laser drive level
reference points, as set by the user. These are described in the previous subsection,
“Operating Modes.”

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Embedded Section
The microprocessor section controls and monitors the laser module. The main and local
microprocessors:
•Control the RF level into the laser, the laser temperature, and its optical-output
power.
•Monitor laser module status and alarm conditions.
•Provide an interface to the GX2-CM100B control module through the GX2-HSG*
backplane to enable status monitoring. This interface is also used by the
GX2-CM100B to control the GX2-EA1000C*/*.
•Provide the ability to download new firmware code into the GX2-EA1000C*/*
through the status-monitoring and control interface.
•Ensure that the module continues to operate normally with minimal interruption from
the firmware download. When the download has completed, it resets the module, as
commanded by the operator, to start the new firmware.
•Reset the module to start new firmware if you switch firmware banks using the
status-monitoring software.
•Retain all settings in NVM and maintain operating conditions after a power cycle.
•Provide the ability to change settings using the network management interfaces.
Communication Interfaces
The GX2-EA1000C*/* can be monitored and controlled locally using the GX2-CM100B, in
conjunction with network management software. A PC interface is available through an
Ethernet port on the front of the GX2-CM100B. Using a standard Web browser, the
graphical user interface (GUI) provides a point-and-click method of monitoring and
controlling the shelf.
For higher-level management, the GX2-EA1000C*/* can be easily connected to a remote
network management system using the standard Ethernet SNMP interface.
See Table 4 in Section 4, “Operation” for specific information on alarm parameters.