Prisma II 1 GHz 1550 nm Transmitters

Transcription

1 Optoelectronics Prisma II 1 GHz 1550 nm Transmitters Description The Prisma II optical network is an advanced transmission system designed to optimize network architectures and increase reliability, scalability, and cost-effectiveness. Prisma II 1 GHz 1550 nm Transmitters offer the ultimate in network architecture flexibility with products designed specifically for broadcast or narrowcast transmission to long distances and at various wavelengths. Features 1 GHz operation Designed to operate within the Prisma II platform Multiple channel plans available Superior Stimulated Brillouin Scattering (SBS) suppression RF predistortion for maximum CNR while maintaining excellent CTB and CSO performance Status LEDs indicate module condition and simplify troubleshooting Blind-mate (push-on) RF and DC connectors RF input test points Nonvolatile storage of pre-set operating parameters simplifies installation procedures User selectable Automatic Gain Control (AGC) Multiple set-up and control options - Local control via Local Craft Interface (LCI) - Local control via Intelligent Communications Interface Module (ICIM) - Remote monitoring via Transmission Network Control System (TNCS) Transmitter Modules The Prisma II 1 GHz 1550 nm Transmitter Family includes: Long Reach Externally-Modulated Broadcast Transmitter Extended Reach Externally-Modulated Broadcast Transmitter Forward QAM Transmitter High-Density Forward QAM Transmitter 1550 nm EMT Transmitters 1550 nm Forward QAM Transmitter 1550 nm High-Density Forward QAM Transmitter

2 Block Diagrams 1550 nm EMT Transmitters Broadcast RF Input Voltage Controlled Attenuator Predistortion Optical Modulator Optical Outputs New Media (narrowcast) RF Input SBS Suppression DFB Laser ICIM (optional module) RF Test Point Microprocessor LCI User Interface Connector (on chassis) 1550 nm Forward QAM and High-Density Forward QAM Transmitter Broadcast RF Input Voltage Controlled Attenuator Predistortion DFB Laser Optical Output New Media (narrowcast) RF Input ICIM (optional module) RF Test Point Microprocessor LCI User Interface Connector (on chassis)

3 Specifications Optical Units Long Reach Extended Reach Forward QAM Tx Notes & High-Density QAM Tx Wavelength Range Options nm nm 1545 to to Connector Type Standard Standard Standard E000/APC Optional Optional Optional Output Power (minimum) m Modulation Type External External Direct SBS Threshold m rated output Electrical Units Long Reach Extended Reach Forward QAM Tx & High-Density QAM Tx Bandwidth MHz Broadcast (BC) RF Input Required nominal RF Input Level per Ch: Notes 40 NTSC ch s (Low or High) NTSC analog ch s with: -00 MHz QAM ( MHz QAM ( PAL B/G analog ch s with: -150 MHz QAM ( MHz QAM ( PAL D/K analog ch s with: -150 MHz QAM ( MHz QAM ( QAM ch s Narrowcast (NC) RF Input Required RF Input Level per Ch (QAM): -for -6c relative to analog ch s ± 1.5 3,4 Required RF Input Level per Ch (analog): -for equal amplitude analog ch s (BC & NC) RF Test Point Relative to Input +1 (above Broadcast RF analog level) Broadcast Input -0 ± 0.5 Narrowcast Input -3 ± (above Broadcast RF analog level) Broadcast Input -0 ± 0.5 Narrowcast Input -3 ± 0.5 Broadcast Input -0 ± 1.0 RF Input Return Loss MHz Frequency Response 45 MHz 550 MHz 45 MHz 100 MHz ± 0.50 ± 0.75 ± 0.50 ± 0.75 ± 0.75 Power Consumption (maximum) W DC (Forward QAM Tx) 7.5 (High-Density QAM Tx) Notes: 1. See Ordering Information for other available ITU wavelengths.. RF input levels specified are with Tx AGC off. 3. For the Forward QAM Tx or High Density QAM Tx with 16 QAM channels,-8 m input to the receiver, and -6 RF between the broadcast and narrowcast (QAM) signal. 4. For the Forward QAM Tx or High Density QAM Tx, as used in 8 wavelength DWDM narrowcast network HE HUB architecture. Unless otherwise noted, specifications are based on measurements made in accordance with NCTA Practices for Measurements made on Cable Television Systems using standard frequency assignments and are referenced to the ambient air temperature at the inlet to the Prisma II chassis. 3

4 Specifications, continued Link Performance Specifications Long Reach Externally-Modulated Broadcast Transmitters 8 Channel Loading CNR* CSO* CTB* Notes 40 NTSC analog ch s (Low or High) ,3 78 NTSC analog ch s with: -00 MHz QAM ( PAL B/G analog ch s with: -150 MHz QAM ( ,,3 59 PAL D/K analog ch s with: -150 MHz QAM ( *For Links using PII 1 GHz Long Reach Externally-Modulated followed by EDFA and launched into 65 km SM fiber, with 0 m optical input to the receiver. 4,6,7,11 Extended Reach Externally-Modulated Broadcast Transmitters 9,10 Channel Loading CNR** CSO** CTB** Notes 40 NTSC analog ch s (Low or High) ,3 78 NTSC analog ch s with: -00 MHz QAM ( PAL B/G analog ch s with: -150 MHz QAM ( ,,3 59 PAL D/K analog ch s with: -150 MHz QAM ( **For Links using PII 1 GHz Extended Reach Externally-Modulated followed by EDFA launched into 40 km SM fiber, into a nd EDFA followed by 30 km SM fiber, with +1 m optical input to the receiver. 4,11 Forward QAM & High-Density Forward QAM Directly-Modulated Broadcast Transmitters Channel Loading MER BER CNR + Notes 16 QAM56 or QAM64 ch s 35 1 e ,3,5,1 + For Links using PII 1 GHz Forward QAM 10 m Tx or PII 1 GHz High Density Forward QAM 10 m Tx, launched into 60 km SM fiber with -8 m optical input to the receiver. 11 Notes: 1. With specified RF input levels and optical link conditions.. For 78 NTSC, 64 PAL B/G or 59 PAL D/K with full QAM loading through 100 MHz, subtract 1 from listed CNR. 3. Receiver with NEP = 7 pa / Hz; ρ = 0.9 A/W. 4. EDFA minimum input power is 5.0 m; noise figure is BER is before Forward Error Correction (pre-fec), with ITU-B J.83 Annex B QAM modulation. 6. Primary (J1) output. Secondary (J). 7. Second port (J) may have some performance degradation as compared with J1. J is available for back-up or route-redundant systems. 8. The Long Reach Tx is used to service point to point, or point to multipoint architectures with links up to 65 km. 9. The Extended Reach Tx is used to service point to point, or point to multipoint architectures with link distances between 65 km to 80 km. 10. For applications with links greater than 80 km using the Extended Reach Tx, Dispersion Compensation Modules will improve composite distortion values. CNR will continue to degrade as distance increases. 11. Typical operating parameters. For other performance levels, please contact Applications Engineering. 1. CNR with 16 CW channels. Unless otherwise noted, specifications are based on measurements made in accordance with NCTA Practices for Measurements made on Cable Television Systems using standard frequency assignments and are referenced to the ambient air temperature at the inlet to the Prisma II chassis. 4

5 Specifications, continued Environmental Units Long Reach Extended Reach Forward High-Density Notes QAM Tx Forward QAM Tx Temperature Range Full Specs C F -0 to to to to +65 Operational C F Humidity % 0 to 95 0 to 95 0 to 95 0 to 95 1 Mechanical Units Long Reach Extended Reach Forward QAM Tx High-Density Forward QAM Tx Physical Dimensions Depth in cm Width in cm Height in cm Weight lb kg Module Width slots Notes Notes: 1. Recommended for use in non-condensing environments only. Unless otherwise noted, specifications are based on measurements made in accordance with NCTA Practices for Measurements made on Cable Television Systems using standard frequency assignments and are referenced to the ambient air temperature at the inlet to the Prisma II chassis. 5

6 Ordering Information Long Reach Externally-Modulated Broadcast Transmitter Sample P 1 5 T X L 1 0 G H Z N T 4 0 L S A P 1 5 T X L Platform Product 1550 Long Reach 15TXL Output Power +10 m 10* Channel Load & Format NTSC 40 Low NTSC 40 High NTSC 78 PAL B/G 64 PAL D/K 59 NT40L NT40H NT78 PBG64 PDK Wavelength ITU8 ITU30 ITU33 ITU39 ITU40 Passband 1 GHZ GHZ Connectors E000/APC SA E (optional) Extended Reach Externally-Modulated Broadcast Transmitter Sample P 1 5 T X X 1 0 G H Z N T 4 0 L S A I T U 8 P 1 5 T X X Platform Product 1550 Extended Reach Output Power +10 m 10 Passband 1 GHZ 15TXX GHZ Channel Load & Format NTSC 40 Low NTSC 40 High NTSC 78 PAL B/G 64 PAL D/K 59 NT40L NT40H NT78HI PBG64 PDK E000/APC Wavelength Connectors ITU8 ITU30 ITU40 SA E (optional) 6

7 Ordering Information Forward QAM Transmitters Prisma II products include some of the industry s most complete range of high performance optical components: Sample P H D 1 5 T X Q 1 0 G H Z D M Q A M S A I T U 5 5 P 1 5 T X Q Platform Product 1550 Forward QAM Tx 1550 High-Density QAM Tx Output Power +10 m 10 Passband 1 GHZ GHZ Modulation Direct DM 15TXQ HD15TXQ Channel Load & Format QAM E000/APC QAM Connectors SA E (optional) Wavelength ITU59 ITU57 ITU55 ITU53 ITU51 ITU49 ITU47 ITU45 ITU43 ITU41 ITU39 ITU37 ITU35 ITU33 ITU31 ITU9 ITU7 ITU5 ITU3 ITU1 ITU19 For more information please refer to: Platform Prisma II Data Sheet Part Number nm Transmitters Prisma II Data Sheet Part Number Forward Optical Receivers Prisma II Data Sheet Part Number Reverse Optical Receivers Prisma II Data Sheet Part Number nm Optical Amplifiers Prisma II Data Sheet Part Number 7390 Receivers Prisma II Data Sheet Part Number Ancillary Modules Prisma II Data Sheet Part Number bdr Digital Reverse :1 Multiplexing System Prisma II Data Sheet Part Number Scientific-Atlanta, the Scientific-Atlanta logo, and Prisma are registered trademarks of Scientific-Atlanta, Inc. Prisma II and bdr are trademarks of Scientific-Atlanta, Inc. Cisco, Cisco Systems, and the Cisco Systems logo are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the U.S. and certain other countries. All other trademarks shown are trademarks of their respective owners. Specifications and product availability are subject to change without notice. 007 Scientific-Atlanta, Inc. All rights reserved. Scientific-Atlanta, Inc or Part Number Rev D May 007 7