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Troubleshooting

B

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

•

User Guide

42

589569-001-a

Troubleshooting

This section provides troubleshooting procedures for the GX2-EA1000C*/*. You can use

the procedures to correct minor problems or better define the malfunction. If the error
condition cannot be corrected, contact the TRC at 1-888-944-HELP (1-888-944-4357).

Before you call, record the input signal levels, optical output power, operating mode(s),
and ambient temperature. This information is most useful to the TRC and repair facility in

troubleshooting and repairing your GX2-EA1000C*/*.

The GX2-EA1000C*/* is a self-contained unit; therefore, when a problem is diagnosed
within the module, the entire GX2-EA1000C*/* must be returned for repair. See

Section 1, “Introduction” for information on equipment return.

Using the Status LED

Table 5 lists the troubleshooting checks you can perform using the

STATUS

LED only. It is

assumed that an SDU, network management system, or local access port are not
available. If these additional options are available, this table can be used in conjunction

with Table 6.

To use Table 5, identify the symptom and then perform the checks in the order listed

under that symptom. For example:

•

If the front-panel

STATUS

LED is yellow, indicating a minor alarm, go to the yellow

column.

•

Find



and perform that check (Verify SC/APC connector . . .)

•

Continue performing all checks in the yellow column, in the order given, to help
identify the cause of the minor alarm and if possible, fix the problem.

5

«
...
48
49
50
51
52
...
»

Содержание GX2 EA1000C Series

Страница 1: ...User Guide GX2 EA1000C Multi Wavelength DWDM 1550 nm Laser Transmitter ...

Страница 2: ...ation 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 implied or expressed including but not limited to the implied wa...

Страница 3: ...eat 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 in...

Страница 4: ...o 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 in...

Страница 5: ...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 t...

Страница 6: ...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 ...

Страница 7: ...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...

Страница 8: ...nsmitter 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 1...

Страница 9: ...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 pri...

Страница 10: ...oring 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 ...

Страница 11: ...tall 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 Modulat...

Страница 12: ...nd 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...

Страница 13: ...all 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 t...

Страница 14: ...ates 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...

Страница 15: ...ate 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...

Страница 16: ...C 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 ...

Страница 17: ...Overview B GX2 EA1000C Multi Wavelength DWDM 1550 nm Laser Transmitter User Guide 9 589569 001 a Figure 5 GX2 EA1000C Front and Rear Side Views ...

Страница 18: ... 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 Pr...

Страница 19: ...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...

Страница 20: ...en 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 ...

Страница 21: ... Wavelength DWDM 1550 nm Laser Transmitter User Guide 13 589569 001 a Front Panel The GX2 EA1000C front panel includes an optical connector a tri color STATUS alarm indicator and one RF test point Figure 6 GX2 EA1000C front panel ...

Страница 22: ...onitored 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 transmitter is being accessed locally 2 The RF TP1 F type connector provides a sample of the RF input level relative to the main and secondary RF input ports on the rear of the GX2 EA1000C 3 Optical bulkhead fitting that has a pro...

Страница 23: ...gth DWDM 1550 nm Laser Transmitter User Guide 15 589569 001 a Rear Panel The GX2 EA1000C rear panel includes cooling fans the main broadcast RF input secondary narrowcast RF input and power signal connector Figure 7 GX2 EA1000C Rear Panel ...

Страница 24: ...1000C This connector mates with the G to F type adapter on the GX2 HSG 4 G type connector for secondary narrowcast RF input to the GX2 EA1000C 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 EA1000C While this is a rear facing connector it is located in a more forw...

Страница 25: ...terface connectors on the rear of the GX2 HSG Cleaning the GX2 EA1000C optical bulkhead and interface fiber connectors Inserting the optical interface connector in the GX2 EA1000C Installing the GX2 EA1000C in the GX2 HSG Powering up and initializing reset Measuring and checking the optical output power Measuring and checking the input signal levels Implementing the GX2 EA1000C MGC and AGC operati...

Страница 26: ...ot To accommodate this feature you need to install RF interface connectors Note The RF interface connectors are not provided with the GX2 EA1000C but are available upon request 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 connectors and the two mounting screws included in the GX2 EA1000C shipping carton 2 Identify the slot tha...

Страница 27: ...ule Laser output is invisible and eye damage can result CAUTION 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 CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous laser radiat...

Страница 28: ... it is also important to clean the interface fiber jumper optical connector s This cleaning should be performed before you insert the GX2 EA1000C 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 10 Cleaning the SC APC connec...

Страница 29: ...ibility for installation and can be used to verify the optical output power after the unit is installed 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 11 illustrates proper SC APC alignment with the optical bulkhead f...

Страница 30: ... narrow right most slot which is reserved for the control module All GX2 application modules can be installed or removed in a powered on or powered off GX2 HSG Figure 12 Typical GX2 HSG Configuration To insert and power up the GX2 EA1000C in the GX2 HSG 1 Slide the GX2 EA1000C fully into the designated shelf slot that contains the previously installed G to F type connectors mounted on the GX2 HSG ...

Страница 31: ...Installation and Setup B GX2 EA1000C Multi Wavelength DWDM 1550 nm Laser Transmitter User Guide 23 589569 001 a Figure 13 GX2 EA1000C installation in a GX2 HSG ...

Страница 32: ...w green cycle Upon initial power up of a new unit the GX2 EA1000C conforms to the factory default Preset Video mode with a 4 dB video mode offset from CW With subsequent power ups the status LED completes its power on cycle information stored in the GX2 EA1000C NVM is recalled and the unit defaults to the last stored operating mode before power was disrupted After initial power up or subsequent po...

Страница 33: ... power of the GX2 EA1000C Perform this verification using an optical power meter the SDU the network management system or the local access port However for initial installation it is recommended that you use the previously installed short optical interface jumper in combination with an optical power meter to verify the optical output power To measure and check the optical output power from the GX2...

Страница 34: ...input signal level to the specified RF input level noted in Appendix A Specifications It may be necessary to adjust the RF input per channel level to be within the noted specification 4 You can calculate this level based on the equation 10 x log10 ratio of channels Avoid varying from the nominal input as higher levels cause degraded distortion performance and lower levels can approach the AGC rang...

Страница 35: ...A1000C microprocessor and RF circuitry act to protect the laser diode if any of the following are detected The GX2 EA1000C optical output is turned off If you turn the optical output off the RF drive level to the laser diode is also turned off and the RF attenuator is set to maximum attenuation to protect the laser from damage When the GX2 EA1000C optical output is turned on the RF drive level is ...

Страница 36: ...tors on the rear of the GX2 HSG are complete 4 Measure the RF levels at RF TP1 RF input level on the GX2 EA1000C front panel 5 Select Preset mode and allocate time for the AGC to adjust the RF signal levels to the laser diode to the optimum operating point 6 The RF drive level is optimized during manufacturing to achieve the link performance required for each laser The factory default laser drive ...

Страница 37: ...hich AGC mode you prefer to use Preset or Set 6 If you choose Preset mode allocate time for the AGC to adjust the signal levels to the laser diode to the optimum operating point Additional level adjustments are not required 7 If you choose Set mode to optimize C N or distortion then select Set Equate This sub mode equates the Preset Mode RF drive level to the laser diode to Set mode and enables yo...

Страница 38: ...backplane Boot Operation When the GX2 EA1000C is powered on or reset the microprocessor boots up and begins operating It first performs a cyclic redundancy check CRC to verify the integrity of the firmware If the CRC indicates error free firmware the microprocessor begins operating After the boot up completes successfully the front panel LED communicates an initialization sequence Red Yellow Green...

Страница 39: ...ications or performance requirements In Set you can increase or decrease the OMI offset by 0 5 dB steps from the preset value through the backplane communication interface When the new offset from the preset value is set AGC maintains the laser OMI at the newly selected level and the OMI offset value is stored in NVM Set is most useful if you need to compromise c n for distortion You can do this b...

Страница 40: ...ou set the RF level this mode is referred to as the fixed gain mode When you select Manual the previously stored Manual mode RF attenuator setting is recalled from NVM Manual is most useful if the input load is fixed and you prefer to control the RF drive level to the laser to achieve a certain performance Reducing the RF attenuation level from the optimum setting may result in improved CNR but de...

Страница 41: ...ol is disabled If the RF drive level to the laser is ON when you turn the optical output power OFF it comes on automatically when the optical output power is restored If the RF drive level to the laser is OFF when you turn the optical output power OFF it remains off when the optical output power is restored Quick Swap The quick swap feature reduces down time by eliminating the need to manually rec...

Страница 42: ... provided in the GX2 CM100B Control Module Installation and Operation Manual Implementing a Reduced Channel Load The GX2 EA1000C performance is optimized during manufacturing for a full load of 79 NTSC channels 52 through 550 MHz and 450 MHz of digital at 6 dBc 550 through 1002 MHz However some CATV systems begin optical link operations with a reduced channel load and later add additional channels...

Страница 43: ...l power is calculated for analog and digital channels separately because they are normally at different levels These total powers are calculated using the following formulas Pa Ia 10 x log10 of analog channels Pd Id 10 x log10 of digital channels Where Pa Total Power of Analog Channels Pd Total Power of Digital Channels Ia Analog Input Level Per Channel Id Digital Input Level Per Channel These pow...

Страница 44: ...e need to re adjust levels to each fiber node in the field 7 Apply the planned additional channel loading Using Manual Mode To implement an increased channel load using Manual mode 1 Operate the GX2 EA1000C in Manual mode 2 Apply the preferred initial channel load 3 Adjust the RF attenuator setting to achieve the preferred performance 4 Apply the additional channel load 5 Manually adjust the RF at...

Страница 45: ...using Preset mode 1 Operate the GX2 EA1000C in Preset mode 2 Apply the preferred initial channel load 3 Allocate time for the AGC to adjust the RF drive level to the laser 4 Apply the additional channel load 5 With the GX2 EA1000C in Preset mode visit each fiber node in the field and adjust the drive levels as necessary 6 Additional adjustments to the GX2 EA1000C should not be necessary because th...

Страница 46: ...r Low Alarm Yellow Optical Output Power Major High Alarm Red Major Low Alarm Red TEC Temperature Deviation Major High Alarm Red Minor High Alarm Yellow Minor Low Alarm Yellow Major Low Alarm Red Laser Bias Current Major High Alarm Red Major Low Alarm Red TEC Current Major High Alarm Red Major Low Alarm Red Module Temperature Major High Alarm Red Minor High Alarm Yellow Minor Low Alarm Yellow ...

Страница 47: ...d report for each fan Minor Low Alarm Yellow Major Low Alarm Red Alarm Description Limit Status LED Action NVM CRC Error Factory Data Minor Alarm Fail Yellow R Alarm Data Major Alarm Fail Red R Calibration Data Major Alarm Fail Red R S Flash Memory Status Error Major Alarm Fail Red R Boot Status Major Alarm Fail Red R Hardware Error Major Alarm Fail Red R ...

Страница 48: ... 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 selected by the operator and verifies the program code CRC The software reads the target module type and firmware re...

Страница 49: ... large number of densely packed wavelengths in low dispersion environments Motorola recommends the following channel plan when doing multi wavelength applications For 2 wavelengths over a single fiber use Channels 29 31 For 4 wavelengths over a single fiber use Channels 29 31 33 35 For 8 wavelengths over a single fiber use Channels 21 22 24 27 29 31 33 35 For 12 wavelengths over a single fiber use...

Страница 50: ... problem is diagnosed within the module the entire GX2 EA1000C must be returned for repair See Section 1 Introduction for information on equipment return Using the Status LED Table 5 lists the troubleshooting checks you can perform using the STATUS LED only It is assumed that an SDU network management system or local access port are not available If these additional options are available this tabl...

Страница 51: ...cks before contacting the TRC Verify that the interface connector and optical bulkhead connector on the GX2 EA1000C are clean See Section 3 Installation and Setup for the cleaning procedure Ensure that you follow all safety precautions when cleaning the interface connector and optical bulkhead A red LED indicates that the signal level may be too high Measure the input signal level at RF TP1 and ve...

Страница 52: ...lf and the thumbscrew is fully tightened Reseat the GX2 EA1000C by removing it and reinstalling it in its designated GX2 HSG slot Check for proper input signal flatness using RF TP Relocate the GX2 EA1000C to a known good GX2 HSG slot Contact the TRC for additional support Using Available Options Table 6 lists the troubleshooting checks available and identifies the reported alarm condition display...

Страница 53: ...Loss of Signal Minor Low Alarm Yellow Optical Output Power Major High Alarm Red Optical Output Power Major Low Alarm Red TEC Temperature Deviation Major High Alarm Red TEC Temperature Deviation Minor High Alarm Yellow TEC Temperature Deviation Minor Low Alarm Yellow TEC Temperature Deviation Major Low Alarm Red Laser Bias Current Major High Alarm Red Laser Bias Current Major Low Alarm Red TEC Curr...

Страница 54: ... Corrective Action TEC Current Major Low Alarm Red Module Temperature Major High Alarm Red Module Temperature Minor High Alarm Yellow Module Temperature Minor Low Alarm Yellow Module Temperature Major Low Alarm Red Fan 1 Speed Minor Low Alarm Yellow Fan 1 Speed Major Low Alarm Red Fan 2 Speed Minor Low Alarm Yellow Fan 2 Speed Major Low Alarm Red ...

Страница 55: ...inimum Broadcast input analog 15 0 5 dBmV ch for 79 NTSC channels plus 450 MHz of digital at 6 dBc Narrowcast input Gain is 6 dB relative to Broadcast input Main RF input test point 20 0 5 dB relative to main RF input port AGC range 12 dB 2 dB below the nominal input to 10 dB above the nominal input Optical Optical wavelength ITU Grid Channels 18 62 Laser shutdown Enable disable through the contro...

Страница 56: ...DM 1550 nm Laser Transmitter User Guide 48 589569 001 a Storage temperature range 40 C to 80 C 40 F to 176 F Over temperature laser protection Software and hardware active Physical Dimensions 1 W 5 9 H 14 6 D 2 5 cm 15 cm 37 1 cm Weight 2 0 lbs 1 kgs ...

Страница 57: ...1000C Multi Wavelength DWDM 1550 nm Laser Transmitter User Guide 49 589569 001 a GX2 EA1000C Models Figure 16 identifies the conventions for the model numbers of the GX2 EA1000C Figure 16 GX2 EA1000C Model Number Conventions ...

Страница 58: ...TUS MODULE INFO and REMOTE Enter a level two menu from the top level menu Press the right arrow Then press the up and down arrows to scroll through the level two menu Change a parameter value Press the right arrow to enter edit mode Use the up and down arrows to change the value Press ENTER to save the new value or press the left arrow to exit edit mode without changing the value If you press no k...

Страница 59: ...dB OPTICAL OUTPUT ON OFF RF INPUT ON OFF ATTENUATOR SETTING xx y dB Can only be changed in manual mode OMI OFFSET CONTROL xx yy dB Can only be changed in set mode OMI OFFSET MONITOR xx yy dB OPTICAL POWER xx y dBm LASER BIAS CURRENT xx y mA LASER TEMP xx y C TEC CURRENT xxx y mA FACTORY DEFAULT RESET OFF ON MODULE STATUS Menu MODULE TEMP xx y C 12V CURRENT xxx y mA FAN 1 SPEED xxxxx y RPM FAN 2 SP...

Страница 60: ... DWDM 1550 nm Laser Transmitter User Guide 52 589569 001 a MODULE INFO Menu ALIAS THIS ALIAS OMNISTAR GX2 EA1000C LASER MODULE MODEL GX2 EA1000C SERIAL NUMBER 0123456789ABCDEF DATE CODE mm dd yyyy FIRMWARE REVISION XX HARDWARE REVISION XX ...

Страница 61: ...000C are listed in Table 9 Table 8 Event Alarm messages for the GX2 EA1000C Transmitter EMS Event Message SDU Display Message Status LED Event RF Input Loss of Signal Minor Low Alarm Yellow Optical Output Power Major High Alarm Red Optical Output Power Major Low Alarm Red TEC Temperature Deviation Major High Alarm Red TEC Temperature Deviation Minor High Alarm Yellow TEC Temperature Deviation Mino...

Страница 62: ...rm Red Laser Bias Current Major Low Alarm Red TEC Current Major High Alarm Red TEC Current Major Low Alarm Red Module Temperature Major High Alarm Red Module Temperature Minor High Alarm Yellow Module Temperature Minor Low Alarm Yellow Module Temperature Major Low Alarm Red Fan 1 Speed Minor Low Alarm Yellow Fan 1 Speed Major Low Alarm Red Fan 2 Speed Minor Low Alarm Yellow ...

Страница 63: ...Status Reporting B GX2 EA1000C Multi Wavelength DWDM 1550 nm Laser Transmitter User Guide 55 589569 001 a EMS Event Message SDU Display Message Status LED Event Fan 2 Speed Major Low Alarm Red ...

Страница 64: ...motorola com 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 registered owners 2012 Motorola Mobility Inc All rights reserved 589569 001 a 06 12 ...

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