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Technical Specifications

PWRLink II 4800T Optical Transmitter Product Manual Rev A (2/02)

A–3

A.4 User

Interface

Front panel

Bi-state status LED: Normal = Green, Alarm = Red

Module selection indicator: Yellow LED

RF attenuation adjustment

Monitor point:

Monitor port to RF input: -20 dB

Flatness: ±1.0 dB

Return loss: >16 dB

Connector type: Female F

Rear panel

RF input connector type: Female F

Optical output (for connector types available, see Section A.8)

Element Management System—NETWatch Site Controller

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 temperature

: 0

to +50

C (+32

to +122

Storage temperature: -40

to +70

C (-40

to +158

Automatic fan adjustment at: 40

& 50

C (104

& 122

Relative humidity: 85% non-condensing

Over temperature laser protection: Software and hardware

For operation over entire temperature range, subtract 2 dB from CSO and CTB worst-case
performance specifications.

Содержание PWRLink II 4800T Series

Страница 1: ...PWRLink II 4800T Series Optical Transmitter Product Manual Manual Part No 700 0051934 Rev A February 2002...

Страница 2: ...lified service personnel Other than those specific measurements adjustments and tests specified in the manual make NO attempt to modify or alter any circuit or assembly in any manner ATTENTION Toute i...

Страница 3: ...el 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...

Страница 4: ...Summary 6 2 6 4 Limitations of Warranty 6 2 6 5 Exclusive Remedies 6 2 Appendix A Technical Specifications A 1 Link Performance A 1 A 2 Optical Output A 2 A 3 RF Input A 2 A 4 User Interface A 3 A 5...

Страница 5: ...endix C provides a list of Harmonic s offices 1 2 Description The PWRLink II 4800T transmitter is a compact plug in module designed for use in the Harmonic HLP 4200 equipment platform An HMC 4000 modu...

Страница 6: ...re 1 2 is a block diagram of the PWL 4800T transmitter The transmitter s microprocessor continuously monitors and controls all critical transmitter parameters in order to optimize performance over bot...

Страница 7: ...lug in module that mounts easily in Harmonic s HLP 4200 platform via the HMC 4000 module carrier See Figure 1 3 for a functional diagram of the HLP 4200 platform The transmitter module draws power fro...

Страница 8: ...casting applications In combination with Harmonic s MAXLink 1550 nm transmission system for complete broadband network solutions The PWL 4800T provides an ultra linear RF input to optical output 1310...

Страница 9: ...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 pot...

Страница 10: ...rrier in the HLP 4200 platform 1 Lower the HLP 4200 platform s control display panel 2 Slide the HMC 4000 carrier into any available slot in the platform until it is properly seated 3 Lock the carrier...

Страница 11: ...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 procedure outlined in Section 5 1 2 Clean...

Страница 12: ...ntegrity use RG 59 coaxial cable Use of a connector with a center pin diameter greater than 0 8 mm can damage the input RF connector 2 5 Testing RF Signal Input Once you have connected the RF signal s...

Страница 13: ...NETWatch Site Controller Element Management System Once installed and configured NETWatch Site Controller provides a straightforward way to monitor and control a network of multiple PWRLink II transm...

Страница 14: ...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 Main menu a...

Страница 15: ...1 through Section 3 1 4 Figure 3 2 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 char...

Страница 17: ...ings Restore all transmitter parameters to the original factory settings 3 1 4 Transmitter Alarms The Transmitter Alarms menu displays the active alarms in the transmitter NOTE If an alarm condition i...

Страница 18: ...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 Indicato...

Страница 19: ...matic 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...

Страница 20: ...ime the 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 th...

Страница 21: ...des the adequate drive level to the laser with a pad value of 7 5 dB 4 2 Fine Tuning Each Transmitter Fine tuning each transmitter is recommended to precisely fit your specific requirements or prefere...

Страница 22: ...er is at the same optimal value determined at the Harmonic factory using CW carriers 2 Once this is done the menu asks you to choose between CW Mode and Video Mode By entering CW Mode you leave the cu...

Страница 23: ...lated carriers Harmonic recommends running Autosetup in CW Mode In the factory the transmitter is optimized using unmodulated carriers Therefore running Autosetup in CW Mode with the same channel load...

Страница 24: ...t 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 level to the transmitter laser remains at its previously...

Страница 25: ...t signal has been properly connected to the transmitter See Section 2 4 Connecting the RF Broadband Input on page 2 3 5 On the HLP 4200WD press the Esc button until the display reads MODULE SELECTION...

Страница 26: ...st then press 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 5 The current RF pad setting is disp...

Страница 27: ...n 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...

Страница 28: ...e 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 F...

Страница 29: ...lean all mating fiber connectors before connecting them to an optical transmitter In addition if you suspect that the optical connector of a PWL 4800T module may have been exposed to contamination by...

Страница 30: ...odule from the HLP 4200 platform 2 Remove the optical connector plate including the Optical Out shutter by unscrewing the two screws See Figure 1 1 on page 1 2 3 Pull the connector plate away removing...

Страница 31: ...ions the transmitter can operate without fan cooling for a limited time Should a fan failure occur contact Harmonic s technical service see Section Section 6 2 To replace the fan 1 Disconnect the fan...

Страница 33: ...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 Harmonic s Customer Se...

Страница 34: ...hall pay all shipping charges duties and taxes for products returned to Harmonic Inc from another country Harmonic Inc warrants that its software as well as firmware designated by Harmonic Inc for use...

Страница 35: ...1 PWRLink II 4800T series CNR vs optical fiber loss 1 These performances specifications are typical given for 100 fiber optical links Subtract 1dB from CSO and CTB for worst case performance 2 Perfor...

Страница 36: ...ohm Return loss 16 dB Level control Manual MGC Automatic AGC Table A 1 Optical Power Transmitter Model Optical Power dBm Optical Power mW PWL 4802T 2 5 0 5 1 8 1 6 to 2 0 PWL 4803T 4 0 0 5 2 5 2 2 to...

Страница 37: ...lable see Section A 8 Element Management System NETWatch Site Controller Interface RS 485 RS 232C connectors in HLP 4200 Carrier Externally generated A 5 Power Requirements Nominal 24 VDC supplied by...

Страница 38: ...platform one half module slot Optical connector type SC APC 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 Availab...

Страница 39: ...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 rectangul...

Страница 41: ...HLP 4200WD Menu Display PWRLink II 4800T Optical Transmitter Product Manual Rev A 2 02 B 3 Figure B 2 HLP 4200 WD platform Transmitter menu display level 2...

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