Gx2 Rx200 Install

G X 2 - R X 2 0 0 B X 2

D u a l R e t u r n P a t h R e c e i v e r

I n s t a l l a t i o n a n d O p e r a t i o n M a n u a l

O m n i S t a r G X 2

STATUS

RX200BX2

RFTP1

RFTP2

CAUTIONRISK OF ELECTRIC SHOCK

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

TO REDUCE THE RISK OF ELECTRIC SHOCK,DO NOT REMOVE COVER (OR BACK).NO USER-SERVICEABLE PARTS INSIDE.

CAUTION:

CautionCautionCautionCaution 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 EquipmentSpecial Symbols That Might Appear on the EquipmentSpecial Symbols That Might Appear on the EquipmentSpecial Symbols That Might Appear on the Equipment

This product 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.

CAUTION Use of controls or adjustments on performance of procedures other than those specified herein may result in hazardous radiation exposure.

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.

Caution This product contains parts and assemblies susceptible to damage by electrostatic discharge (ESD).

For continued protection against fire, replace all fuses only with fuses having the same electrical ratings marked at the location of the fuse.

FCC ComplianceFCC ComplianceFCC ComplianceFCC 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. Any changes or modifications not expressly approved by Motorola could void the users authority to operate this equipment under the rules and regulations of the FCC.

Canadian ComplianceCanadian ComplianceCanadian ComplianceCanadian Compliance This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations. Cet appareil numrique de la classe A respects toutes les exigences du Rglement sur le matriel brouilleur du Canada.

Declaration of ConformityDeclaration of ConformityDeclaration of ConformityDeclaration of Conformity

We Motorola, Inc. 101 Tournament Drive

Horsham, PA 19044, U.S.A.

declare under our sole responsibility that the

OMNISTAR Model GX2-RX200BX2

to which this declaration relates is in conformity with one or more of the following standards:

EMC StandardsEMC StandardsEMC StandardsEMC Standards

EN55022 EN55024 EN50083-2 CISPR-22 CISPR-24

Safety StandardsSafety StandardsSafety StandardsSafety Standards

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

Copyright 2001 by Motorola, 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 translation, transformation or adaptation) without written permission from Motorola, Inc.

Motorola reserves the right to revise this publication and to make changes in content from time to time without obligation on the part of Motorola to provide notification of such revision or change. Motorola provides this guide without warranty of any kind, either implied or 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.

_______________________________________________________________________________________________________________________________

Motorola, the stylized M logo, and OMNISTAR are registered trademarks of Motorola, Inc. All other product or service marks are the property of their respective owners.

G X 2 - R X 2 0 0 B X 2 I n s t a l l a t i o n a n d O p e r a t i o n M a n u a l

C o n t e n t s

S e c t i o n 1 I n t r o d u c t i o n

Using This Manual .............................................................................................................. ..............1-2 Related Documentation.......................................................................................................... ...........1-3 Document Conventions........................................................................................................... ...........1-3 If You Need Help............................................................................................................... ................1-3 Calling for Repairs ............................................................................................................ ...............1-4

S e c t i o n 2 O v e r v i e w

Module Description ............................................................................................................. .............2-2 Receiver Paths ................................................................................................................. ................2-4 Embedded Section ............................................................................................................... .............2-5 Quick-Swap Module Configuration ......................................................................................................2-5 Communication Interfaces ....................................................................................................... .........2-5 Front-Panel Optical Connectors, Indicators, and Test Points ..................................................................2-6 Rear Panel ..................................................................................................................... .................2-8

S e c t i o n 3I n s t a l l a t i o n

Fiber Maintenance Kit .......................................................................................................... ............3-1 Unpacking the GX2-RX200BX2 ...........................................................................................................3-1 Installing the RF Interface Connectors ................................................................................................3-2 Cleaning the GX2-RX200BX2 Optical Bulkhead Fittings .........................................................................3-3 Cleaning the Interface Fiber Jumper SC/APC Connector ........................................................................3-4 Installing the GX2-RX200BX2 in the GX2-HSG* ....................................................................................3-4

Optical Input Level Check ....................................................................................................... 3-6 Inserting the SC/APC Connector ........................................................................................................3-7 Power-Up and Reset Initialization.......................................................................................................3-7 Operational Optical Input Level Check ................................................................................................3-8 Verify the RF Output (Gain) Signal ......................................................................................................3-8

Equipment-Shelf Rear Panel Connections ............................................................................... 3-8

i ii ii ii i C o n t e n t s


S e c t i o n 4 O p e r a t i o n

Operating Modes ................................................................................................................ ............. 4-1 Manual Gain Control ...............................................................................................................4-1 Off ........................................................................................................................................4-1

Input Optical Power Level Meters ....................................................................................................... 4-1 RF Test Points ................................................................................................................. ................ 4-1 RF Output Level ................................................................................................................ ............... 4-2 Redundant Switch Control ....................................................................................................... .......... 4-3 Embedded Section ............................................................................................................... ............ 4-3

Boot Operation........................................................................................................................4-3 Downloading New Firmware ....................................................................................................4-4

Network Management ............................................................................................................. .......... 4-5

A p p e n d i x A S p e c i f i c a t i o n s

RF Characteristics ............................................................................................................. .............. A-1 Optical Characteristics........................................................................................................ ............. A-1 Power .......................................................................................................................... ................... A-1 Environmental .................................................................................................................. ............... A-1 Physical....................................................................................................................... ................... A-1

A b b r e v i a t i o n s a n d A c r o n y m s

F i g u r e s

Figure 1-1 GX2-RX200BX2 front panel ............................................................................................ .... 1-1 Figure 1-2 Fully populated GX2-HSG* equipment shelf.......................................................................... 1-2 Figure 2-1 Fully populated OmniStar GX2 equipment shelf .................................................................... 2-1 Figure 2-2 GX2-RX200BX2 block diagram ......................................................................................... .. 2-3 Figure 2-3 GX2-RX200BX2 front and rear side views ............................................................................ 2-4 Figure 2-4 Front-panel optical connectors, test points, and status indicator ........................................... 2-6 Figure 2-5 GX2-RX200BX2 rear panel................................................................................................. 2-8 Figure 3-1 Installing the RF interface connectors on the rear of the GX2-HSG* ....................................... 3-2 Figure 3-2 Cleaning the barrel of the optical bulkhead fitting ................................................................ 3-3 Figure 3-3 Cleaning the SC/APC connector tip .................................................................................... 3-4 Figure 3-4 Typical GX2-HSG* configuration ......................................................................................... 3-4 Figure 3-5 GX2-RX200BX2 installation in a GX2-HSG* ......................................................................... 3-5 Figure 3-6 Inserting the GX2-RX200BX2 in the GX2-HSG*..................................................................... 3-6 Figure 3-7 Inserting the SC/APC connector ......................................................................................... 3-7 Figure 3-8 Rear panel of GX2-HSG* equipment shelf ............................................................................ 3-8

C o n t e n t s i i ii i ii i ii i i


T a b l e s

Table 2-1 Minimum GX2-HSG* equipment-shelf configuration ...............................................................2-2 Table 2-2 GX2-RX200BX2 front-panel features ....................................................................................2-7 Table 2-3 GX2-RX200BX2 rear-panel features .....................................................................................2-9 Table 4-1 Laser module input levels ............................................................................................ ........4-2 Table 4-2 GX2-RX200BX2 RF output levels (dBmV)................................................................................4-2 Table 4-3 Status LED indications for given parameter conditions ............................................................4-5


S e c ti o n 1 I n t r o d u c t i o n

The OmniStar GX2 system is a complete line of headend fiber optic products designed to transport video and data signals in Cable Access Television (CATV) systems and related applications. The OmniStar GX2 system 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 Motorola GX2-RX200BX2 dual return path optical receiver module, which is used in headend and hub applications (see Appendix B, Applications). The two receivers in the GX2-RX200BX2 share a common digital controller, but have independent outputs. Each receiver accepts either 1310 nm or 1550 nm modulated optical input and converts it to RF in the passband from 5 MHz through 200 MHz.

Control for each receiver is done locally through the GX2-SDU100B Shelf Door Unit (SDU) or the GX2-CM100B craft port interface. Remote monitoring and control can be accomplished using a Network Management System.

Figure 1-1 illustrates a front view of the GX2-RX200BX2:

F i g u r e 1 - 1 G X 2 - R X 2 0 0 B X 2 f r o n t p a n e l

STATUS

RX200BX2

RFTP1

RFTP2

1 - 2 I n t r o d u c t i o n


The GX2-RX200BX2 includes the following features:

! Low distortion performance

! High output capability

! Control outputs for RF switch operation

! High isolation off mode

Different OmniStar GX2 application modules can be intermixed in the 16-slot GX2-HSG*. For illustrative purposes, Figure 1-2 depicts a GX2-HSG* populated with various GX2* modules and a GX2-CM100B control module:

F i g u r e 1 - 2 F u l l y p o p u l a t e d G X 2 - H S G * e q u i p m e n t s h e l f

STATUS STATUS STATUS STATUS STATUS STATUS STATUS STATUS STATUS STATUS STATUS STATUS STATUS STATUS

D M1000B8/C H21

D M1000B8/C H23

D M1000B8/C H25

D M1000B8/C H27 LM 1000B12 LM 1000B12 LM 1000B12 LM 1000B12 LM 1000B12 LM 1000B12 OA100B17 R X1000B R X1000B R X1000B

RFTP1

RFTP1

RFTP1

RFTP1

RFTP1

RFTP1

RFTP1

RFTP1

RFTP1

RFTP1

RFTP

RFTP

RFTP

RFTP2

RFTP2

RFTP2

RFTP2

RFTP2

RFTP2

RFTP2

STATUS

R X200BX2

RFTP1

RFTP2

STATUS

LM 1000B12

RFTP1

RFTP2

RFTP2

RFTP2

RFTP2

C M100B

STATUS

CM

PS1

PS2

OMNISTAR GX2

OmniStar 2 GX

ENT

For more information regarding this product or other OmniStarGX2 modules and their applications, consult the Motorola Product Catalog.

U s i n g T h i s M a n u a l The following sections provide information and instructions to install and operate the GX2-RX200BX2:

Section 1 IntroductionIntroductionIntroductionIntroduction provides a product description, related documentation, the technical helpline, and repair/return information.

Section 2 OverviewOverviewOverviewOverview describes the functions of the GX2-RX200BX2.

Section 3 InstallationInstallationInstallationInstallation provides instructions on how to install the GX2-RX200BX2, clean its optical bulkhead, and clean the fiber connector.

Section 4 OperationOperationOperationOperation provides instructions on how to operate the GX2-RX200BX2.

Appendix A SpecificationsSpecificationsSpecificationsSpecifications provides general specifications for the GX2-RX200BX2.

Abbreviations and Acronyms

The Abbreviations and AcronymsAbbreviations and AcronymsAbbreviations and AcronymsAbbreviations and Acronyms list contains the full spelling of the short forms used in this manual.

I n t r o d u c t i o n 1 - 3


R e l a t e d D o c u m e n t a t i o n The following documents provide information that is required for products that can be used with the GX2-RX200BX2:

# GX2-HSG* Equipment Shelf Installation and Operation Manual

# GX2-CM100B Control Module Installation and Operation Manual

# GX2-PSAC10B AC Power Supply Installation and Operation Manual

# GX2-PSDC10B 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-RX200BX2*:

! GX2-RX1000B Forward Path Receiver Installation and Operation Manual

! GX2-SDU100B Shelf Door Unit Installation and Operation Manual

! GX2-OA100* Optical Amplifier Installation and Operation Manual

! GX2-EM1000* Externally Modulated Broadcast Transmitter Installation and Operation Manual

! GX2-DM1000* Directly Modulated Forward Path Transmitter Installation and Operation Manual

! GX2-RSW200B RF Switch Installation and Operation Manual

! GX2-LM1000B* 1310 Forward Path Transmitter Installation and Operation Manual

! GX2-OSW10B Optical Switch Installation and Operation Manual

# Web Browser Interface Instruction Sheet

! Return Path Level Selection, Setup, and Alignment Procedure Reference Guide

D o c u m e n t C o n v e n t i o n s Before you begin using the GX2-RX200BX2, familiarize yourself with the stylistic conventions used in this manual:

SMALL CAPS Denotes silk screening on the equipment, typically representing front- and rear-panel controls, input/output (I/O) connections, and light emitting diodes (LEDs)

* (asterisk) Indicates that several versions of the same model number exist and the information applies to all models; when the information applies to a specific model, the complete model number is given

Italic type Denotes a displayed variable, a variable that you must type, or is used for emphasis

I f Y o u N e e d H e l p If you need assistance while working with the GX2-RX200BX2, contact the Motorola Technical Response Center (TRC):

! Inside the U.S.: 1-888-944-HELP (1-888-944-4357)

! Outside the U.S.: 215-323-0044

! Online: http://www.motorola.com/broadband, click HTML/Modem Version, click Customer Support, then click Web Support.

1 - 4 I n t r o d u c t i o n


The TRC is open from 8 AM to 7 PM Eastern Time, Monday through Friday and 10 AM to 6 PM Eastern Time, Saturday. When the TRC is closed, emergency service only is available on a call-back basis. Web Support offers a searchable solutions database, technical documentation, and low priority issue creation/tracking 24 hours per day, 7 days per week.

C a l l i n g f o r R e p a i r s If repair is necessary, call the Motorola Repair Facility at 1-800-642-0442 for a Return for Service Authorization (RSA) number before sending the unit. The RSA number must be prominently displayed on all equipment cartons. The Repair Facility is open from 7 AM to 4 PM Pacific Time, Monday through Friday.

When calling from outside the United States, use the appropriate international access code, and then call 526-314-1000, extension 3194 to contact the Repair Facility.

When shipping equipment for repair, follow these steps:

1 Pack the unit securely.

2 Enclose a note describing the exact problem.

3 Enclose a copy of the invoice that verifies the warranty status.

Ship the unit PREPAID to the following address: Motorola BCS c/o Exel Attn: RSA #___________

6908 East Century Park Dr. Tucson, AZ 85706


S e c ti o n 2 O v e r v i e w

OmniStar GX2 equipment is designed for increased rack density, reliability, ease of operation, and computer-aided troubleshooting through extensive network management. All OmniStar GX2 application 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 option 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-RX200BX2 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.

The GX2-HSG* can have a mix of different OmniStar GX2 modules. Figure 2-1 illustrates an equipment shelf populated with four GX2-DM1000B*, seven GX2-LM1000B*, one GX2-OA100B*, three GX2-RX1000B*, one GX2-RX200BX2, a GX2-CM100B control module and an optional shelf door unit (SDU) with display:

F i g u r e 2 - 1 F u l l y p o p u l a t e d O m n i S t a r G X 2 e q u i p m e n t s h e l f


D M1000B8/C H21

D M1000B8/C H23

D M1000B8/C H25


RFTP1

RFTP1

RFTP1

RFTP1

RFTP1

RFTP1

RFTP1

RFTP1

RFTP1

RFTP1

RFTP

RFTP

RFTP

RFTP2

RFTP2

RFTP2

RFTP2

RFTP2

RFTP2

RFTP2

STATUS

R X200BX2

RFTP1

RFTP2

STATUS

LM 1000B12

RFTP1

RFTP2

RFTP2

RFTP2

RFTP2

C M100B

STATUS

CM

PS1

PS2

OMNISTAR GX2

OmniStar 2 GX

ENT

2222 ---- 2222 O v e r v i e w


Table 2-1 describes a typical OmniStar GX2 equipment shelf using the GX2-RX200BX2:

T a b l e 2 - 1 M i n i m u m G X 2 - H S G * e q u i p m e n t - s h e l f c o n f i g u r a t i o n

Co m p o n e n t M o d e l F u n c ti o n

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-PSAC10B or GX2-PSDC10B

The GX2-PSAC10B provides shelf power in an ac powered system; the GX2-PSDC10B provides shelf power in a dc system

Control module GX2-CM100B Provides status monitoring and control functions

Return receiver module

GX2-RX200BX2 Dual return path receiver

M o d u l e D e s c r i p t i o n The GX2-RX200BX2 fulfills a wide range of applications by receiving, monitoring, controlling, and converting modulated optical inputs into an RF output signal.

The GX2-RX200BX2 has two independent receivers, A and B, and a common digital controller. Each receiver accepts both 1310 nm and 1550 nm optical inputs and converts them to RF. Each receiver has an internal PIN attenuator, controlled by the embedded circuit, that sets the receiver output level.

Functions performed by the GX2-RX200BX2:

! Demodulates an optical input and provides an RF output

! Provides manual gain control of the RF output

! Monitors parameters and reports them to the network management system

! Provides local alarm indication by changing the color of the front-panel STATUS LED

! Stores module identity, operational parameters, and set-up information

! Enables downloadable firmware for field upgrades

! Controls the optional RF switch module GX2-RSW200B

O v e r v i e w 2222 ---- 3333


Figure 2-2 provides a GX2-RX200BX2 operational overview:

F i g u r e 2 - 2 G X 2 - R X 2 0 0 B X 2 b l o c k d i a g r a m

Attenuationcontrol

Tempmonitor

Opticalinput A

Opticalinput B

RFOUT

A

TP A

TP B

RFOUT

B

Backplaneinterface

Detector

Preamp

Postamp

A/D

A/D

D/A

Attenuationcontrol

Detector

Preamp

Postamp

A/D D/A

Microcontroller&

Firmware

2222 ---- 4444 O v e r v i e w


Figure 2-3 illustrates front and rear side views of the GX2-RX200BX2

F i g u r e 2 - 3 G X 2 - R X 2 0 0 B X 2 f r o n t a n d r e a r s i d e v i e w s

R e c e i v e r P a t h s Each receiver of the GX2-RX200BX2 accepts 1310 nm and 1550 nm wavelength optical inputs. The optical detector of each receiver demodulates its respective optical input and provides an RF output. Detector current is monitored by the embedded circuit and is used to determine the received optical power.

Signal-path control is provided by the variable attenuator across a 20 dB range, as determined by two operating modes: manual gain control (MGC) and OFF. You can select the operating mode from the SDU front panel, local craft port, or Network Management System.

Directional couplers in the paths of both receivers tap off a 20 dB signal from the RF outputs for RF TP1 and RF TP2. Individual connectors mounted on the back panel of the GX2-RX200BX2 (Figure 2-5, Key 3 and 4) provide an RF output for each receiver path.

O v e r v i e w 2222 ---- 5555


E m b e d d e d S e c t i o n The GX2-RX200BX2 is controlled and monitored by the microprocessor section, which performs the following tasks:

! Provides control of specified module functions.

! Monitors module operation and reports status and alarm conditions.

! Provides an interface to the GX2-CM100B control module through the GX2-HSG* backplane to enable status monitoring and control of the module.

! Provides the ability to download new firmware code into the module through a status monitoring and control interface with minimal interruption of operation.

Q u i c k - S w a p M o d u l e C o n f i g u r a t i o n 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-RX200BX2 is provided in Section 4, Operation.

C o m m u n i c a t i o n I n t e r f a c e s You can monitor the GX2-RX200BX2 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-RX200BX2 can be easily connected to a remote Network Management System using the standard Ethernet SNMP interface.

See Section 4, Operation, Table 4-1 for specific information on alarm parameters.

2222 ---- 6666 O v e r v i e w


F r o n t - P a n e l O p t i c a l C o n n e c t o r s , I n d i c a t o r s , a n d T e s t P o i n t s The GX2-RX200BX2 front panel provides an SC/APC bulkhead fitting and an RF output test point for each receiver. It also includes a tri-color STATUS alarm indicator.

Figure 2-4 illustrates the GX2-RX200BX2front panel:

F i g u r e 2 - 4 F r o n t - p a n e l o p t i c a l c o n n e c t o r s , t e s t p o i n t s , a n d s t a t u s i n d i c a t o r

STATUS

RX200BX2

RFTP1

RFTP2

1

2

3

4

5

O v e r v i e w 2222 ---- 7777


Table 2-2 describes the GX2-RX200BX2 front-panel features:

T a b l e 2 - 2 G X 2 - R X 2 0 0 B X 2 f r o n t - p a n e l f e a t u r e s

K e y F e a tu r e F u n c ti o n

1

STATUS

There are three STATUS LED colors:

! Green indicates normal operation with no alarms reported. ! Yellow indicates a minor alarm is detected. A minor alarm signals an

out-of-tolerance monitored parameter value, but the system can operate. ! Red indicates a significant error occurred or a major alarm limit was violated. ! Blinking STATUS LED indicates that the receiver is accessed locally.

2

RFTP1

The RF TP1 20 dB F-connector provides a 20 dB sample of the RF output level for the A path.

3

RFTP2

The RF TP2 20 dB F-connector provides a 20 dB sample of the RF output level for the B path.

4

Optical bulkhead fittings that have a protective shutter for the optical input fiber connection. The top connector is the A receiver input and the bottom connector is the B receiver input.

5

Slotted thumbscrew that secures the GX2-RX200BX2 to the GX2-HSG*.

2222 ---- 8888 O v e r v i e w


R e a r P a n e l The GX2-RX200BX2 rear-panel includes cooling fans, RF outputs, and an edge connector that mates to the GX2-HSG* backplane.

Figure 2-5 illustrates the GX2-RX200BX2 rear panel:

F i g u r e 2 - 5 G X 2 - R X 2 0 0 B X 2 r e a r p a n e l

1

2

3

4

5

6

O v e r v i e w 2222 ---- 9999


Table 2-3 describes the GX2-RX200BX2 rear-panel features:

T a b l e 2 - 3 G X 2 - R X 2 0 0 B X 2 r e a r - p a n e l f e a t u r e s

K e y F e a tu r e F u n c ti o n

1

Forced air fan that is required to circulate cooling air.

2

Additional forced air fan that is required to circulate cooling air.

3

G-type connector for receiver A output. This connector mates with the G- to F-type adapter on the GX2-HSG*.

4

G-type connector for receiver B output. This connector mates with the G- to F-type adapter on the GX2-HSG*.

5

This 24-pin connector provides the interface for dc power, ground, remote control, and monitoring functions to the GX2-RX200BX2. While this is a rear facing connector, it is located in a more forward location immediately above the slotted thumbscrew as illustrated in Figure 2-3.

6

The guide pin and thumbscrew secures the GX2-RX200BX2 to the GX2-HSG*.


S e c ti o n 3 I n s t a l l a t i o n

This section provides instructions to install the GX2-RX200BX2 receiver module, connect it to other equipment, and verify that it is operational. To function, the GX2-RX200BX2 receiver requires a GX2-HSG* configured with an ac or dc power supply, and a GX2-CM100B control module. These modules are shipped with documentation; follow the installation instructions in each manual to populate the GX2-HSG* equipment shelf.

Installing the GX2-RX200BX2 in the equipment shelf requires:

! Unpacking the module and recording the model number, serial number, and other related information

! Installing the RF interface connector on the rear of the GX2-HSG*

! Inserting the module in an equipment shelf slot and securing it with the thumbscrew

! Cleaning the bulkhead and fiber connectors

! Measuring and connecting the input signal

! Verifying the RF output signal

D A N G E R !

OmniStar GX2 modules can be damaged by electrostatic discharge (ESD). The use of an appropriate wrist ground strap is strongly recommended. A ground connection is provided on the power supply module.

F i b e r M a i n t e n a n c e K i t Before performing the installation, acquire a fiber maintenance kit (Alcoa Fujikura, part number C008812, ACT-1, or equivalent). See the instructions to properly use the kit. The following items are required for proper fiber maintenance:

! 99% isopropyl alcohol

! Lint-free anti-static wipes

! Compressed filtered air

! Lint-free swabs

U n p a c k i n g t h e G X 2 - R X 2 0 0 B X 2 1 Unpack the GX2-RX200BX2 and inspect it for damage. If damaged, set it aside in its

original packing material and contact the TRC for further instructions. See Section 1, Introduction.

2 Record the model number, serial number, and related information for future reference. This information is located on the side of the module.

3 - 2 I n s t a l l a t i o n


I n s t a l l i n g t h e R F I n t e r f a c e C o n n e c t o r s The GX2-HSG* is unique as it enables you to install the GX2-RX200BX2 in any application module slot. To accommodate this feature, you need to install the RF interface connectors provided with the GX2-RX200BX2.

To install the two RF G-to-F connectors on the rear of the GX2-HSG*:

1 Locate the plate containing the two G- to F-type connector and the two mounting screws included in the GX2-RX200BX2 shipping carton.

2 Identify the slot that the GX2-RX200BX2 will occupy in the GX2-HSG*.

3 Hold the connector plate so that the F side of the G- to F-type connectors face outward and the tabs are in the up position.

4 Insert the tabs on the mounting plate into the slots on the rear of the GX2-HSG* that correspond to the location of the GX2-RX200BX2.

5 Secure the plate with the two screws provided.

Figure 3-1 illustrates the RF connector plate and its correct position on the rear of the GX2-HSG*:

F i g u r e 3 - 1 I n s t a l l i n g t h e R F i n t e r f a c e c o n n e c t o r s o n t h e r e a r o f t h e G X 2 - H S G *

F-typeconnectors

Tabs

The GX2-HSG* is now ready to accept the GX2-RX200BX2. However before you insert the GX2-RX200BX2 into the GX2-HSG*, you need to perform some basic cleaning procedures on the optical interfaces.

It is highly recommended that you perform the following cleaning procedures before you install the GX2-RX200BX2 in the GX2-HSG*. GX2-RX200BX2 installation and routine maintenance should be performed by properly trained personnel. In all cases, they should be aware of and observe the following warnings associated with fiber optic receivers.

I n s t a l l a t i o n 3 - 3


D A N G E R !

Laser Hazard! Invisible laser radiation when the module is open and the interlock defeated. Avoid direct exposure to the beam. Do not look into the optical connector or a fiber connected to the output of a laser module. Laser output is invisible and eye damage can result.

C A U T I O N !

Handle fiber carefully and avoid sharp bends, strain, or pinching. Avoid contacting the highly polished end of the exposed fiber at the connector by keeping the protective boot in place when practical.

While some models of the GX2-RX200BX2 do not have SC/APC type connectors, cleaning procedures similar to the following are recommended as appropriate for the connector type installed.

C l e a n i n g t h e G X 2 - R X 2 0 0 B X 2 O p t i c a l B u l k h e a d F i t t i n g s To ensure the specified received power of the GX2-RX200BX2 is achieved at the optical bulkhead fittings, it is important to clean all the optical interfaces.

To clean the barrel of the optical bulkhead fitting:

1 Set the GX2-RX200BX2 on a clean flat surface.

2 Carefully open the shutter of the optical bulkhead fitting.

3 Gently clean the barrel of the optical bulkhead fitting with a lint-free swab as illustrated in Figure 3-2:

F i g u r e 3 - 2 C l e a n i n g t h e b a r r e l o f t h e o p t i c a l b u l k h e a d f i t t i n g

Lint free swab

Bulkhead fitting



C l e a n i n g t h e I n t e r f a c e F i b e r J u m p e r S C / A P C C o n n e c t o r In addition to cleaning the optical bulkhead on the GX2-RX200BX2, it is also important to clean the interface fiber jumper optical connector(s). This cleaning should be performed before you insert the GX2-RX200BX2 into the GX2-HSG*.

To clean the interface fiber jumper SC/APC connector(s):

1 Remove the protective boot from the end of the SC/APC connector.

2 Clean the tip gently with lint-free wipes moistened with 99% isopropyl alcohol.

Figure 3-3 illustrates the cleaning location:

F i g u r e 3 - 3 C l e a n i n g t h e S C / A P C c o n n e c t o r t i p

FerruleConnector

Wipe tip

3 Dry the SC/APC connector with compressed, filtered air or use a dry, lint-free wipe.

I n s t a l l i n g t h e G X 2 - R X 2 0 0 B X 2 i n t h e G X 2 - H S G * You are now ready to insert the GX2-RX200BX2 into the GX2-HSG*. All slots in the GX2-HSG* are universal and intended for the Omnistar GX2 application modules, except the narrow, right-most slot which is reserved for the GX2-CM100B. All GX2 application modules can be installed or removed in a powered-on or powered-off GX2-HSG*.

Figure 3-4 illustrates a fully installed, typical GX2-HSG* configuration:

F i g u r e 3 - 4 T y p i c a l G X 2 - H S G * c o n f i g u r a t i o n


D M1000B8/C H21

D M1000B8/C H23

D M1000B8/C H25


RFTP1

RFTP1

RFTP1

RFTP1

RFTP1

RFTP1

RFTP1

RFTP1

RFTP1

RFTP1

RFTP

RFTP

RFTP

RFTP2

RFTP2

RFTP2

RFTP2

RFTP2

RFTP2

RFTP2

STATUS

R X200BX2

RFTP1

RFTP2

STATUS

LM 1000B12

RFTP1

RFTP2

RFTP2

RFTP2

RFTP2

C M100B

STATUS

CM

PS1

PS2

OMNISTAR GX2

OmniStar 2 GX

ENT



To insert and power-up the GX2-RX200BX2 in the GX2-HSG*:

1 Slide the GX2-RX200BX2 fully into the designated shelf slot that contains the previously installed G- to F-type connector mounted on the GX2-HSG*.

2 Ensure that a firm connection is achieved with the GX2-HSG* backplane. Power is automatically applied when contact is made with the backplane connectors.

3 Tighten the thumbscrew at the bottom of the GX2-RX200BX2 to secure it in the GX2-HSG* slot. You can tighten the thumbscrew firmly with your fingers or torque to 7 3 in-lb.

Figure 3-5 illustrates the correct procedure of first installing the RF connector plate and then, installing the GX2-RX200BX2:

F i g u r e 3 - 5 G X 2 - R X 2 0 0 B X 2 i n s t a l l a t i o n i n a G X 2 - H S G *

1

2



Figure 3-6 illustrates a front view of the GX2-HSG* and the slots that guide the partially inserted GX2-RX200BX2:

F i g u r e 3 - 6 I n s e r t i n g t h e G X 2 - R X 2 0 0 B X 2 i n t h e G X 2 - H S G *

Guide slots

Optical Input L evel Check To ensure the maximum acceptable optical input power is not exceeded for each receiver, use an optical power meter to check the optical signal level before inserting each SC/APC connector. The acceptable optical input power range is 16 dBm through 0 dBm.



I n s e r t i n g t h e S C / A P C C o n n e c t o r Before inserting the GX2-RX200BX2 into the GX2-HSG*, insert the interface fiber jumper SC/APC connector into the optical bulkhead fitting.

To insert the SC/APC connector into the optical bulkhead fitting:

1 Carefully open the shutter of the optical bulkhead fitting.

2 Align the key on the SC/APC connector with the mating key slot of the optical bulkhead fitting. Figure 3-7 illustrates proper SC/APC alignment with the optical bulkhead fitting:

F i g u r e 3 - 7 I n s e r t i n g t h e S C / A P C c o n n e c t o r

Bulkhead fitting

SC/APC connector(properly mated whensnapped in place)

3 Insert the SC/APC connector into the optical bulkhead fitting.

4 Push the SC/APC connector into the fitting until it snaps in place.

P o w e r - U p a n d R e s e t I n i t i a l i z a t i o n When the GX2-RX200BX2 is fully installed in the GX2-HSG* and power is applied, the initialization process begins. The GX2-RX200BX2 STATUS LED completes a redyellowgreen cycle. A continuous green LED indicates normal operating conditions. Upon initial power-up of a new unit, the GX2-RX200BX2 conforms to the factory default conditions.



With subsequent power-ups the status LED completes its power-on cycle, information stored in the GX2-RX200BX2 NVM is recalled, and the unit defaults to the last stored operating settings before power was disrupted.

O p e r a t i o n a l O p t i c a l I n p u t L e v e l C h e c k Use the SDU, local PC interface, or Network Management System to verify the received optical power of each receiver is within the expected range.

V e r i f y t h e R F O u t p u t ( G a i n ) S i g n a l For proper return path level selections, see the Return Path Level Selection, Setup, and Alignment Procedure Reference Guide.

Use a signal level meter or a spectrum analyzer to ensure there are RF signal outputs of the slot occupied by the GX2-RX200BX2 receiver module. The outputs are located on the GX2-HSG* rear panel. As an alternative, you can use the front panel test points to verify output levels.

Figure 3-8 illustrates the rear panel of the GX2-HSG* equipment shelf:

F i g u r e 3 - 8 R e a r p a n e l o f G X 2 - H S G * e q u i p m e n t s h e l f

RF output ARF output B

Equipment-Shelf Rear Panel Connections 1 Connect the receiver A RF output cable to the top connector of the slot occupied by the

GX2-RX200BX2 receiver module.

2 Connect the receiver B RF output cable to the bottom connector of the slot occupied by the GX2-RX200BX2 receiver module.


S e c ti o n 4 O p e r a t i o n

This section provides additional information necessary to properly use the GX2-RX200BX2. It also provides a procedure to download new GX2-RX200BX2 firmware.

O p e r a t i n g M o d e s Each receiver in the GX2-RX200BX2 module has two operating modes: manual gain control (MGC), and off. You can control each receiver independently. To set the operating mode of a GX2-RX200BX2 receiver, use the SDU, local PC port, or Network Management System.

Manual Gain Control The manual gain control is used to increment or decrement RF outputs in 0.5 dB steps through a 20 dB range by varying the internal PIN attenuators. The attenuator values are retained in NVM and are restored after a power down/up or initialization sequence.

Off In Off mode, the receiver RF output is minimal to enable removal of the signals from an upstream receiver, transmitter, or set-top terminal. The off mode is also used to disable the alarms from an inactive receiver.

I n p u t O p t i c a l P o w e r L e v e l M e t e r s Each receiver has an internal optical power meter that determines the received optical power by measuring the optical detector current. Meter readings are accessed through the SDU, local PC port, or a Network Management System. Readings are reported in optical power (dBm) so you do not have to perform any conversions.

R F T e s t P o i n t s The front panel has two RF test-point connectors, one for each receiver. The top connector is for the A path and the bottom connector is for the B path. The level at the test point is 20 dB below the respective receiver RF output.

4 - 2 O p e r a t i o n


R F O u t p u t L e v e l The RF output level from the GX2-RX200BX2 depends on the type of laser that is used, the RF input level to the laser, the GX2-RX200BX2 gain setting, and the optical link loss between the laser and the GX2-RX200BX2.

Table 4-1 lists the various laser transmitter models and the suggested input level for each one:

T a b l e 4 - 1 L a s e r m o d u l e i n p u t l e v e l s

P l a t f o r m T y p e

M B R a n d B T N S G 2 0 0 0 O m n i S ta r

Laser Model

AM-MB-RPTD AM-BTN-RPTV1 AM-TC-RPT SG2-DFBT SG2-IFPT AM-OMNI-RPT

Input Level (dBmV)

40 45 45 15 15 15

Table 4-2 shows the RF output levels that result when the suggested input level is applied to the various transmitters and the GX2-RX200BX2 gain is adjusted to the midrange (nominal) setting. For output levels greater than 52 dBmV (shown in bold type in Table 4-2 to indicate these levels should not be used) the gain must be adjusted below the midrange setting until the output level is less than 52 dBmV. All levels are given in dBmV.

Table 4-2 lists the resulting GX2-RX200BX2 RF output levels:

T a b l e 4 - 2 G X 2 - R X 2 0 0 B X 2 R F o u t p u t l e v e l s ( d B m V )

O p t i c a l L i n k L o s s

A M - M B - R P T D

A M - B T N - R P T V 1

A M - T C - R P T

S G 2 -D F B T

S G 2 -I F P T

A M - O M N I -R P T

0 54545454 54545454 54545454 54545454 54545454 N/AN/AN/AN/A

1 54 54 54 54545454 54 N/AN/AN/AN/A

2 54 54 54 54545454 54 N/AN/AN/AN/A

3 52 52 52 54 52 54545454

4 50 50 50 53 50 54545454

5 48 48 48 51 48 54545454

6 46 46 46 49 46 54

7 44 44 44 47 44 53

8 42 42 42 45 42 51

9 40 40 40 43 40 49

10 38 38 38 41 38 47

11 36 36 36 39 36 45

12 34 34 34 37 34 43

O p e r a t i o n 4 - 3


R e d u n d a n t S w i t c h C o n t r o l You can use the GX2-RX200BX2 in conjunction with a GX2-RSW200B RF switch for redundant return paths. The RF switch has two inputs, one from the primary GX2-RX200BX2 and the other from the secondary GX2-RX200BX2. Normally, the RF switch passes the primary signal and switches to the redundant signal when problems are detected in the primary receiver. Each receiver of the GX2-RX200BX2 communicates with the GX2-RSW200B through a control signal multiplexed onto the RF signal line. A change in the dc impedance of the output indicates a state of change to the RF switch. Normal RF performance is not affected since the ac impedance maintains 75 ohms.

When the received optical power of the primary receiver drops below a user selectable threshold, the receiver signals the GX2-RSW200B to switch to the redundant path. Once the optical power rises above the threshold by 0.8 dB for 1 second the GX2-RSW200B is signaled to switch back to the primary input. (You can also set the GX2-RSW200B for non-revert mode which requires a manual intervention to cause the reversion). For further details on GX2-RSW200B modes and operation see the (GX2-RSW200B Installation and Operation Manual). You can set the threshold to any optical input level within most of the receivers normal operating range. The upper input power range is slightly restricted to keep threshold hysteresis from preventing recovery.

E m b e d d e d S e c t i o n The microprocessor section contains memory to hold two separate banks of operating firmware: factory code and download code. Factory code is programmed into the module at the factory and is read-only. Download code can be changed or updated by downloading new firmware as described below.

The microprocessor internal memory also stores module information and calibration data that is programmed at the factory.

The microprocessor contains digital-to-analog (D/A) and analog-to-digital (A/D) converters that are used to control and monitor module operation. The module communicates to the GX2-CM100B control module through the GX2-HSG* backplane.

Boot Operation When the module is powered on or reset, the microprocessor boots up and begins operating. The microprocessor determines which operating firmware bank to use factory code or download code. It then verifies the integrity of the selected bank code by performing a cyclic redundancy check (CRC). If the CRC indicates the firmware is error free, the microprocessor begins operation using that firmware code.

During the boot up, the front-panel receiver alarm STATUS LED is green and blinks on and off. After the boot up completes successfully the front-panel LED enters an initialization sequence.

If the CRC indicates errors in the firmware, the microprocessor checks to ensure that the other bank contains valid firmware. The microprocessor verifies the CRC of the code in the other bank and, if error free, begins operating with that firmware.

If an error occurs during the boot up, the STATUS LED illuminates red and an alarm message indicating which bank failed is sent to the Network Management System.

4 - 4 O p e r a t i o n


If both banks fail the CRC test, the microprocessor stops operating and the receiver STATUS LED blinks red to indicate that the boot up failed. The module continues to pass signal without microprocessor control.

Downloading New Firmware The GX2-RX200BX2 can store up to two sets of firmware programs which you can download through the Network Management System. When the download is complete, the GX2-RX200BX2 uses the new firmware for each subsequent boot up. You also have the option of selecting and using any stored set of firmware code at each boot up.

The Network Management System enables you to view the following information about the firmware programs stored in the GX2-RX200BX2:

! Firmware revision level

! Firmware code CRC

! Which set of firmware will run at the next boot up

You have the option of selecting a specific module or all modules of the target type for download. After you select all of the options, you can initiate the download.

To download firmware, the Network Management System must be running and communicating with the GX2-CM100B. The GX2-CM100B and the Network Management System perform the following tasks to download the new firmware:

! The Network Management System reads the firmware download file you selected and verifies the program code CRC. The software reads the target module type and firmware revision to be downloaded from the file and displays this information for your verification.

! The Network Management System transfers the download firmware and selected options to the GX2-CM100B. The GX2-CM100B verifies that the firmware was transferred correctly and that the selected options are valid. If the GX2-CM100B detects any errors it responds with an error message to the Network Management System. From this point on, the firmware download is handled exclusively by the GX2-CM100B.

! Following firmware verification, the GX2-CM100B begins the firmware download to the target modules. It monitors the programming of new firmware and reports any errors. It also sends a message informing the Network Management System that the firmware download was successful.

! The GX2-CM100B is now ready to reset the GX2-RX200BX2 to run the new firmware program. You can determine whether the reboot is immediate or occurs at a later time following the issuance of a reset command. This option enables you to choose between immediate, delayed, or scheduled reboots.

The GX2-RX200BX2 continues to operate normally during a firmware download which is transparent to you and the Network Management System.

Refer to the (GX2-CM100B Control Module Installation and Operation Manual) and the (Network Management System Instruction Manual) for additional information regarding the downloading of firmware.

O p e r a t i o n 4 - 5


N e t w o r k M a n a g e m e n t The receiver module monitors selected parameters during operation and compares the measurements to a table stored in memory. This table defines high and low limits, as well as, STATUS LED indication if a fault occurs. When a measurement exceeds the alarm limit, the appropriate status LED is illuminated and the fault is reported to the control module. The SDU, local PC interface, or Network Management System can be used to further isolate the fault condition.

Table 4-3 lists the status LED indications for given parameter conditions:

T a b l e 4 - 3 S t a t u s L E D i n d i c a t i o n s f o r g i v e n p a r a m e t e r c o n d i t i o n s

Pa ra m e t e r Co n d i t i on S ta tu s LE D

All No alarms Green

Optical Power The level is greater than or equal to the major high limit or the level is less than or equal to the major low limit

Red

Redundant Switch Threshold Alarm

The received optical power level is less than the redundant switch threshold point a minor alarm is generated

Yellow

Module Current The level is greater than or equal to the major high limit or the level is less than or equal to the major low limit

Red

Module Current The level is greater than or equal to the minor high limit or the level is less than or equal to the minor low limit

Yellow

Module Temp The level is greater than or equal to the major high limit or the level is less than or equal to the major low limit

Red

Module Temp The level is greater than or equal to the minor high limit or the level is less than or equal to the minor low limit

Yellow

NVM Status A major alarm is reported when the module cyclic redundancy check (CRC) information stored in the Non-volatile Memory at the factory is not correct

Red

FLASH Status A major alarm is reported when an error is detected while downloading firmware to the module

Red

Boot Status A major alarm is reported when the module fails to boot properly using the desired firmware code (either factory program or downloaded program)

Red


Ap p e n d i x A

S p e c i f i c a t i o n s

Specifications for the GX2-RX200BX2 are valid over the given bandwidth and operating temperature range listed in this section. The current Motorola Product Catalog may contain additional information not listed below.

R F C h a r a c t e r i s t i c s Rf bandwidth 5 MHz to 200 MHz

Maximum recommended total output power

52 dBmV

Gain control range 20 dB

Attenuation increments 0.5 dB

RF test points relative to RF output ports

20 dB

All RF ports return loss 18 dB

Ambient Operating temperature

20C to +65C

OFF mode attenuation >37 dB

O p t i c a l C h a r a c t e r i s t i c s Optical input power range 16 dBm to 0 dBm

Optical wavelength 1310 nm 30 nm, 1550 nm 30 nm

Eye protection Optical safety shutter

P o w e r Power consumption 18 W maximum, 13 W typical

E n v i r o n m e n t a l Operating temperature range 20C to +65C (4F to +149F)

Storage temperature range 40C to +80C (40F to +176F)

Over temperature laser protection

Software and hardware active

P h y s i c a l Dimensions 1W 5.9H 14.6D (2.5 cm 15 cm 37.1 cm)

Weight 2.2 lbs. (1 kgs)


A b b r e v i a t i o n s a n d A c r o n y m s

The abbreviations and acronyms list contains the full spelling of the short forms used in this manual:

A/D analog-to-digital

AGC automatic gain control

APC angled physical contact

c/n carrier-to-noise

CATV Community Antenna Television

CRC cyclic redundancy check

CW continuous wave

D/A digital-to-analog

dB decibels

dBm decibels per milliwatt

dBc decibels, carrier level

dBmV decibels per millivolt

DFB distributed-feedback laser

ESD electrostatic discharge

FCC Federal Communications Commission

LED light-emitting diode

MGC manual gain control

MHz Megahertz

mW milliwatts

NTSC National Television Systems Committee

NVM non-volatile memory

OMI optical modulation index

PIN positive intrinsic-negative

RF radio frequency

RSA Return for Service Authorization

SDU shelf door unit

TRC Technical Response Center

483149-001-99

10/01

ContentsIntroductionUsing This ManualRelated DocumentationDocument ConventionsIf You Need HelpCalling for Repairs

OverviewModule DescriptionReceiver PathsEmbedded SectionQuickSwap Module ConfigurationCommunication InterfacesFrontPanel Optical Connectors, Indicators, and Test PointsRear Panel

InstallationFiber Maintenance KitUnpacking the GX2RX200BX2Installing the RF Interface ConnectorsCleaning the GX2-RX200BX2 Optical Bulkhead FittingsCleaning the Interface Fiber Jumper SC/APC ConnectorInstalling the GX2-RX200BX2 in the GX2-HSG*Optical Input Level Check

Inserting the SC/APC ConnectorPower-Up and Reset InitializationOperational Optical Input Level CheckVerify the RF Output (Gain) SignalEquipmentShelf Rear Panel Connections

OperationOperating ModesManual Gain ControlOff

Input Optical Power Level MetersRF Test PointsRF Output LevelRedundant Switch ControlEmbedded SectionBoot OperationDownloading New Firmware

Network Management

Appx A - SpecificationsRF CharacteristicsOptical CharacteristicsPowerEnvironmentalPhysical

Abbreviations and Acronyms

Gx2 Rx200 Install

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