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PWRLink™ II 4100S Series Optical Transmitter Product Manual Rev A (3/06)

 6–1

6

Troubleshooting

This chapter describes:

•

How to troubleshoot the PWRLink™ II 4100S Series Optical Transmitter

•

How to return the unit for service

•

Manufacturer disclaimer

6.1

Troubleshooting

Should a problem occur, check the following:

1. View the Status LED on the transmitter’s front panel to determine if an 

alarm condition is indicated. See 

Front Panel LED Indicators

 on page 3-6.

2. View the HLP 4200WD front panel display to determine if an alarm 

condition is indicated.

3. Confirm that the PWL 4100S is receiving power.
4. Confirm that the controller cable is connected to the transmitter module 

and the HLP 4200.

6.2

In Case of Problems

If you continue to have a problem, contact the Harmonic Customer Service 
department (see Appendix D, 

Harmonic Inc. – Offices

). A service technician 

will assist you in determining whether a fault exists with the unit.

If the service technician determines that you need to return the unit, she or he 
will issue you a Return Material Authorization (RMA) Number. You must 
include this RMA number on the shipping container when returning the unit, 
and with all correspondence regarding the unit.

To return the unit, send it to one of the Harmonic Headquarters addresses 
listed in Appendix D, 

Harmonic Inc. – Offices

. Please add the note:

Attn.: Customer Service
RMA no. _________

Содержание PWL 4102S

Страница 1: ...PWRLink II 4100S Series Optical Transmitter Product Manual Manual Part No 700 0052017 Rev A March 2006 ...

Страница 2: ...e all product designs Specifications are subject to change without notice Harmonic and logo design eXchange MAXLink METROLink NETWatch PWRBlazer TRANsend and Redefining the Network are trademarks of Harmonic Inc YAGLink and PWRLink are registered trademarks of Harmonic Inc All other names are trademarks or registered trademarks of their respective owners ...

Страница 3: ...troller 3 6 3 3 Front Panel RF Adjustment 3 6 3 4 Front Panel LED Indicators 3 6 Chapter 4 Transmitter Setup 4 1 Factory Optimized Settings 4 2 4 1 1 Returning to Factory Settings 4 2 4 2 Fine Tuning Each Transmitter 4 3 4 3 Autosetup Automatic Gain Control and Manual Gain Control 4 4 4 3 1 Autosetup 4 4 4 3 2 Automatic Gain Control and Manual Gain Control 4 6 4 4 Setup via HLP 4200WD Display 4 7 ...

Страница 4: ...nic Inc Chapter 6 Troubleshooting 6 1 Troubleshooting 6 1 6 2 In Case of Problems 6 1 6 3 Disclaimer 6 2 Appendix A Technical Specifications Appendix B HLP 4200WD Menu Display Appendix C Using Modulated Carriers Appendix D Harmonic Inc Offices ...

Страница 5: ...endix B shows additional user interface details Appendix C provides additional details about using modulated carriers Appendix D provides a list of Harmonic s offices 1 2 Description The PWL 4100S transmitter is a compact plug in module designed for use in the Harmonic HLP 4200 equipment platform An HMC 4001 module carrier is needed to mount the transmitter in the platform Harmonic has optimized t...

Страница 6: ...e employs a microprocessor based communication and monitoring architecture Figure 1 2 is a block diagram of the PWL 4100S transmitter The transmitter s microprocessor continuously monitors and controls all critical transmitter parameters in order to optimize performance over both time and temperature changes The microprocessor controlled parameters include Input signal attenuation pad Laser power ...

Страница 7: ...act plug in module that mounts easily in Harmonic s HLP 4200 platform via the HMC 4001 module carrier See Figure 1 3 for a functional diagram of the HLP 4200 platform The transmitter module draws power from the platform s 24 VDC power bus and communicates with the platform controller via the platform communication bus Figure 1 3 HLP 4200 functional diagram ...

Страница 8: ...rowcasting applications In combination with Harmonic s MAXLink 1550 nm transmission system for complete broadband network solutions The PWL 4100S provides an ultra linear RF input to optical output 1310 nm response for the simultaneous transmission of analog video and digital signals in the 45 to 1003 MHz frequency band The 1310 nm optical signal transmitted by a PWRLink II module can be received ...

Страница 9: ...ic bag touch a ground point for several seconds A suitable ground point is an unpainted part of the chassis of a grounded piece of equipment 2 2 Installing the Transmitter Module CAUTION To protect yourself from potential injury and to protect the equipment from further damage do not perform any operational tests if the equipment appears to be damaged The PWL 4100S transmitter module plugs into th...

Страница 10: ...C 4001 carrier in the HLP 4200 platform 1 Lower the HLP 4200 platform s control display panel 2 Slide the HMC 4001 carrier into any available slot in the platform until it is properly seated 3 Lock the carrier into position with the carrier locking screw shown in Figure 2 1 The PWL 4100S receives power from the HMC 4001 carrier The carrier is powered by the 24 VDC bus of the HLP 4200 For additiona...

Страница 11: ...f the fiber cable connector needs to be cleaned follow the cleaning procedure outlined in Section 5 1 1 Cleaning Patch Cord or Pigtail Fiber Optical Connectors on page 5 2 5 Verify that the PWRLink II optical connector has not been exposed to any contamination If you suspect that the connector may have been exposed to contamination for example by a dirty fiber cable connector follow the cleaning p...

Страница 12: ... cable Use of a connector with a center pin diameter greater than 0 8 mm can damage the input RF connector Insert the signal source connector into the PWL 4100S module RF input connector and tighten securely The input video signal level must be between 15 and 22 dBmV per analog video channel based on 80 NTSC channels 2 5 Testing RF Signal Input Once you have connected the RF signal source you can ...

Страница 13: ...means of monitoring and controlling PWL 4100S performance The Autosetup and Reset to Factory Settings commands are available only through this interface For initial setup of the transmitter Harmonic recommends using the HLP 4200WD display if available NETWatch Site Controller Element Management System Once installed and configured NETWatch Site Controller provides a straightforward way to monitor ...

Страница 14: ...tform interface hierarchy In this figure push button commands are framed in ovals and resultant display messages are framed in rectangular boxes Use the Main menu to scan through platform positions and select a specific transmitter module to monitor and control The Main menu also allows you to set the platform address for communication with NETWatch Site Controller Instructions for navigating the ...

Страница 15: ...tion 3 1 1 through Section 3 1 5 Figure 3 2 on page 3 4 shows the information and controls available in the Transmitter menu For further details see Appendix B HLP 4200WD Menu Display which contains a fully detailed chart of the menu display The status and control parameters in the Transmitter menu apply only to the specific transmitter module that is selected Use the HLP 4200WD s and buttons to s...

Страница 16: ...User Interface Options 3 4 Copyright 2006 Harmonic Inc Figure 3 2 HLP 4200WD platform Transmitter menu display chart ...

Страница 17: ...utosetup routine Select Manual Gain Control MGC or Automatic Gain Control AGC mode of operation Configure the transmitter in either CW or Video mode 3 1 4 Transmitter Adjustments The Transmitter Adjustments menu allows you to Adjust and optimize the RF pad settings Restore all transmitter parameters to the original factory settings 3 1 5 Transmitter Alarms The Transmitter Alarms menu displays the ...

Страница 18: ...es the following options Each clockwise turning step of the RF adjustment switch increases the RF attenuation by 0 1 dB Each counterclockwise step of the switch decreases the RF attenuation by 0 1 dB Each full turn has 10 steps equal to 1 0 dB Note that the RF adjustment switch works by communicating with the microprocessor which in turn adjusts the pad value 3 4 Front Panel LED Indicators The PWL...

Страница 19: ...up Automatic Gain Control and Manual Gain Control How to set up via the HLP 4200WD display How to set up via NETWatch Site Controller How to set up via the transmitter s front panel controls NOTE For initial setup of the transmitter Harmonic recommends using the HLP 4200WD platform s push buttons and display if available If you are using another platform such as HLP 4200ND that does not have a dis...

Страница 20: ...e transmitter s settings are changed you can always return the transmitter to the original factory settings through the HLP 4200WD display interface In the Transmitter Adjustments menu select the Return to Factory Settings option Follow the procedure in Section 4 4 3 Resetting the Transmitter to Factory Defaults When the transmitter reverts to the factory optimized settings If the transmitter is i...

Страница 21: ... laser is overdriven To optimize the transmitter s performance you need to adjust the RF input level to the factory setting 15 dBmV per channel Using AGC Reset to Factory Settings provides the adequate drive level to the laser with a pad value of 8 5 dB 4 2 Fine Tuning Each Transmitter Harmonic recommends fine tuning each transmitter to fit your specific requirements and preferences precisely You ...

Страница 22: ...erate Figure 4 1 Autosetup via the HLP 4200 front panel The Autosetup procedure works in three steps 1 When you enter the Autosetup command via the HLP 4200WD front panel the transmitter s internal microprocessor measures the input drive level to the transmitter Then it sets the attenuator pad so that the average RF drive level to the laser is at the same optimal value determined at the Harmonic f...

Страница 23: ...nds that you use 15 dBmV per channel to ensure that the system is easy to upgrade When should CW Mode or Video Mode be used The choice of mode depends on the loading Example In the case of a transmitter with the following setup Loading 80 unmodulated NTSC System M channels from 50 to 550 MHz and 200 MHz digital loading from 600 to 800 MHz 10 dBc down RF input level 18 dBmV per channel Factory opti...

Страница 24: ... be 5 5 18 15 2 10 5 dB For further information about using modulated carriers and how this changes the RF level see Appendix C Using Modulated Carriers 4 3 2 Automatic Gain Control and Manual Gain Control The AGC function operates by measuring the input RF level to the transmitter and continuously adjusting the RF pad to maintain constant drive level to the laser When you select AGC the input lev...

Страница 25: ...en properly connected to the transmitter See Section 2 4 Connecting the RF Broadband Input on page 2 4 5 On the HLP 4200WD press the Esc button until the display reads MODULE SELECTION then press Enter 6 Press the or button until the display indicates the transmitter module you wish to set up then press Enter 7 Press or until the display reads TRANSMITTER SETUP then press Enter The message appears...

Страница 26: ...Enter 3 Press or until the display reads TRANSMITTER ADJUSTMENTS then press Enter 4 Press or until the display reads ADJUST RF LEVEL then press Enter The current RF pad setting is displayed with the instruction SET UP DN TO CHANGE 5 Hold down the Set button and press or until the RF pad value you want is displayed then press Enter 6 To exit RF adjustment press Enter 4 4 3 Resetting the Transmitter...

Страница 27: ...in Section 2 2 Installing the Transmitter Module on page 2 1 2 Verify that the platform is powered on and that no alarm conditions exist within the transmitter module make sure that the module icon in the NETWatch display is green 3 Select automatic gain control AGC mode of operation 4 Set the RF input level to the value given in Table 4 1 Factory Setup on page 4 2 5 Select manual gain control MGC...

Страница 28: ...he transmitter See Section 2 3 Connecting the Fiber Cable on page 2 3 4 Using the RF Adj control on the front panel adjust the RF input level to the value given in Table 4 1 Factory Setup on page 4 2 For further details on how to use the RF adjustment switch see Section 3 3 Front Panel RF Adjustment on page 3 6 ...

Страница 29: ...ion performance Therefore Harmonic recommends that you clean all mating fiber connectors before connecting them to an optical device In addition if you suspect that the optical connector of a PWL 4100S may have been exposed to contamination by a dirty fiber cable connector for example you should properly clean the PWL 4100S optical connector before connecting optical fiber CAUTION Improper cleanin...

Страница 30: ... connector with either a 2 5 mm optical connector swab or bulkhead adapter cleaning tools such as the Seikoh Giken FerruleMate 4 If alcohol is used in above step finish with a dry swab or bulkhead adapter cleaning tools 5 Inspect the bulkhead adapter for cleanliness with a video inspection scope if available Repeat steps 3 and 4 until the adapter and internal connector meet applicable cleanliness ...

Страница 31: ...Fan Replacement PWRLink II 4100S Series Optical Transmitter Product Manual Rev A 3 06 5 3 Figure 5 1 HMC 4001 fan replacement Phillips Screws ...

Страница 32: ...Maintenance 5 4 Copyright 2006 Harmonic Inc ...

Страница 33: ...eiving power 4 Confirm that the controller cable is connected to the transmitter module and the HLP 4200 6 2 In Case of Problems If you continue to have a problem contact the Harmonic Customer Service department see Appendix D Harmonic Inc Offices A service technician will assist you in determining whether a fault exists with the unit If the service technician determines that you need to return th...

Страница 34: ...ing from the use of the products described herein except as expressly agreed to in writing by Harmonic The use and purchase of this product does not convey a license under any patent rights copyrights trademark rights or any intellectual property rights of Harmonic Nothing hereunder constitutes a representation or warranty that using any products in the manner described herein will not infringe an...

Страница 35: ...00S series transmitters with 80 NTSC System M channels1 3 4 running Figure A 1 CNR vs optical fiber loss 1 Channel loading 80 unmodulated System M NTSC channels up to 550 MHz and 450 MHz digital at 6 dBc 2 Performance expected at 25 C For operation over entire temperature range subtract 3 dB from CSO and 2 dB from CTB 3 Optical link defined as PWRLink II transmitter 100 fiber link HRM 3811 receive...

Страница 36: ...ional bandwidth 45 to 1003 MHz Frequency response 1 dB peak to valley RF attenuator adjustment range 10 dB Impedance 75 ohm Return loss 16 dB Level control manual MGC automatic AGC auto setup feature Table A 1 Optical Power Transmitter Model Optical Power dBm PWL 4102S 2 5 0 5 PWL 4103S 3 5 0 5 PWL 4104S 4 5 0 5 PWL 4105S 5 5 0 5 PWL 4106S 6 5 0 5 PWL 4107S 7 5 0 5 PWL 4108S 8 5 0 5 PWL 4109S 9 5 ...

Страница 37: ...nector types available see Section A 8 Element Management System NETWatch Site Controller HEM interface RS 485 RS 232C connectors in HLP 4200 Carrier Externally generated A 5 Power Requirements Nominal 24 VDC supplied by HLP 4200 bus Maximum 28 VDC Consumption 22 Watts maximum A 6 Environmental Operating temperature1 0 to 50 C 32 to 122 F Storage temperature 40 to 70 C 40 to 158 F Automatic fan ad...

Страница 38: ...er Optical connector type SC APC1 FC APC SC UPC FC UPC E2000 RF connector type Standard F RG 59 cable type accepts 0 64 to 0 8 mm center conductor diameter A 8 Models Available PWL 4102S through PWL 4115S PWL 41xxS zz xx Model Number 02 to 15 zz Connector Type AS AF US UF or AE AS SC APC AF FC APC US SC UPC UF FC UPC AE E2000 1 SC APC is the connector type recommended by Harmonic Other connector t...

Страница 39: ...pes within a distance of 100mm may pose an eye hazard WARNUNG UNSICHTBARE LASERSTRAHLUNG NICHT DIREKT MIT LUPE BETRACHTEN KLASSE 1M LASER PRODUKT Das betrachten des Laser Ausgangs mit optischen Instrumenten z B Vergrößerungsglas Mikroskope innerhalb eines Abstandes von 100mm kann eine Augenverletzungs Gefahr darstellen ATTENTION RADIATION LASER INVISIBLE NE PAS OBSERVER À LA LOUPE DIRECTEMENT PROD...

Страница 40: ...roducts that cannot be re used will be recycled in compliance with the WEEE Directive To that end users are advised that 1 Harmonic equipment is not to be discarded in household or office garbage 2 customers may consult the Harmonic web site www harmonicinc com for additional and updated information on this process ...

Страница 41: ...art of the commands and messages in the Transmitter Menu of the HLP 4200WD platform display In these figures push button commands are framed in ovals and resultant display messages are framed in rectangular boxes Use the HLP 4200WD s and buttons to scroll through the menus Use the Enter button to make a selection Use the Esc button to escape any menu ...

Страница 42: ...HLP 4200WD Menu Display B 2 Copyright 2006 Harmonic Inc Figure B 1 HLP 4200WD platform Transmitter menu display levels 0 and 1 ...

Страница 43: ...HLP 4200WD Menu Display PWRLink II 4100S Series Optical Transmitter Product Manual Rev A 3 06 B 3 Figure B 2 HLP 4200 WD platform Transmitter menu display level 2 ...

Страница 44: ...HLP 4200WD Menu Display B 4 Copyright 2006 Harmonic Inc ...

Страница 45: ...o different objectives as described in the two sections below You need to choose the objective that best fits your system requirements Objective 1 When following Objective 1 The goal is to achieve the maximum possible modulation with better CNR by about 2 dB compared to unmodulated carriers Average CSO and CTB will be the same as the unmodulated case Higher CSO and CTB occur occasionally for brief...

Страница 46: ...ter responds to this drop at the detector by setting the pad 2 dB lower than the factory optimized setting However in this case we know that the peak value of the carrier will be 2 dB higher To cope with this Video Mode adds 2 dB of pad and returns the peak carrier back to its original level Thus the pad value returns to its original value and the CNR returns to the same value as in the unmodulate...

Страница 47: ...Using Modulated Carriers PWRLink II 4100S Series Optical Transmitter Product Manual Rev A 3 06 C 3 Figure C 1 RF spectrum with modulated carriers ...

Страница 48: ...Using Modulated Carriers C 4 Copyright 2006 Harmonic Inc ...

Страница 49: ...9 Baltic Way Sunnyvale CA 94089 U S A Tel 1 800 788 1330 inside U S Tel 1 408 542 2500 outside U S Fax 1 408 490 6708 Asia Pacific Headquarters Harmonic Limited Suite 703 704 CMG Asia Tower The Gateway 15 Canton Road Tsimshatsui Kowloon Hong Kong Tel 852 2116 1119 Fax 852 2116 0083 Europe and Africa Headquarters Harmonic Inc Continental Square 4 Place de Londres Saturne Building 2nd Floor ROISSY C...

Страница 50: ...Harmonic Inc Offices D 2 Copyright 2006 Harmonic Inc ...

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