Model 6944 Four Port Optoelectronic Node 870 MHz with 42/54 MHz Split

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Annabelle Atkins
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Optoelectronics Model 6944 Four t Optoelectronic Node 870 MHz with 42/54 MHz Split Description The Model 6944 Node is Scientific-Atlanta s latest generation 870 MHz optical node platfm.

The fward path of the Model 6944 Node can be initially deployed as a broadcast 1310/1550 nm optical receiver with common services distributed to either four outputs (all high level) six outputs (two

1 Optoelectronics Model 6944 Four t Optoelectronic Node 870 MHz with 42/54 MHz Split Description The Model 6944 Node is Scientific-Atlanta s latest generation 870 MHz optical node platfm. This platfm allows independent segmentation redundancy f both the fward and reverse paths in a reliable, cost-effective package. The fward path of the Model 6944 Node can be initially deployed as a broadcast 1310/1550 nm optical receiver with common services distributed to either four outputs (all high level) six outputs (two high level and four lower level). Fward segmentation can be implemented via use of additional optical receivers, to provide unique broadcast services at each of the high level pts. The Model 6944 Node s reverse path is equally flexible. erse traffic can be combined and routed to F DFB reverse transmitters, and redundant (back-up) transmitters may also be utilized. The platfm provides f reverse segmentation through the addition of transmitters. Up to four transmitters - one per reverse input pt can be configured using the eight position optical interface board. Where fiber counts are limited, the six-position optical interface module allows f space to add advanced Baseband Digital erse, reverse path segmentation technology using Scientific-Atlanta s bdr system. The six-position optical interface board has two transmitter mounting positions. If the reverse path is not segmented, one position is used f the primary reverse transmitter and the other f an optional redundant transmitter. F dual reverse segmentation, two transmitters are installed, each dedicated to reverse traffic from a pair of station reverse input pts. The Model 6944 Node RF launch amplifier module is common to all configurations from the most basic to a fully featured, fward and reverse segmented node. The fward path of the RF launch amplifier includes four high level distribution outputs. Utilizing a plug-in splitter, the outputs f pts one and six can be split and routed to pts two and five respectively, thereby providing six output pts, two high level and four lower level. The reverse path in the RF launch amplifier module is passive. Each of the four reverse path inputs includes a plug-in location f an optional three state reverse switch. There are three fward configuration modules f the Model 6944 Node, each specific to the level of fward path segmentation desired. When the fward path of the node is not segmented, a standard fward configuration module is utilized, and the four station output pts are fed from a common receiver. A dual fward segmentation module is utilized when two receivers are installed - with each providing unique broadcast services to a pair of station output pts. A quad fward segmentation module is utilized when four receivers are installed with each providing unique broadcast services to one of four dedicated station output pts.

2 Model 6944 Four t Optoelectronic Node 5-42/ MHz Features Six pt 1 GHz RF platfm 15 ampere continuous power passing Independent scalability of fward and reverse path erse segmentation capable in fiber limited systems with bdr digital reverse erse four pt (quad) segmentation with four optical transmitters erse two pt (dual) segmentation with two optical transmitters (redundancy optional) Fward four pt (quad) segmentation with four 1310/1550 nm optical receivers Fward two pt (dual) segmentation with two 1310/1550 nm optical receivers (redundancy optional) Standard fiber management tray (9 ) provides fiber and connect stage f up to 6 connect pairs Extended fiber management tray (12 ) provides fiber and connect stage f up to 12 connect pairs and room f mounting WDMs and couplers Screwless seizures f ease of connect installation 40 to 90 V high-efficiency, switch-mode power supply power supply redundancy Local test points and LED indicats on optical receivers and transmitters simplify installation and maintenance status moniting and control (TNCS other compatible element management system required) 3-state reverse switch (on/off/-6 db) allows each reverse input to be isolated f noise and ingress troubleshooting (status moniting required) 2

3 Model 6944 Four t Optoelectronic Node 5-42/ MHz No Segmentation One Fward Optical Receiver and One erse Optical Transmitter 1-30dB T.. BYASS ower Direct 1-20dB T.. Splitter 1 & 2 Jumper Input -20dB T.. Launch Amplifier Standard Fward Configuration Module Input -20dB T.. -20dB T.. 4 ower Direct 4-30dB T dB T dB T.. ower Direct Crowbar ower Direct 3-20dB T.. Input -20dB T.. NET Input -20dB T.. Splitter 5 & 6 Jumper -20dB T.. 6 ower Direct ower Direct -30dB T dB T.. F2 erse Router Status Local Insert LF Optical Interface Board Status Fward Redundancy lug-in Location XMTR 75 Term RCVR -20dB T rimary ower Supply Secondary ower Supply T F1 Laser Diode hoto Diode Fiber Management Tray 3

4 Model 6944 Four t Optoelectronic Node 5-42/ MHz Dual Fward and Dual erse Segmentation Two Fward Optical Receivers and Two erse Optical Transmitters 1-30dB T dB T dB T.. BYASS ower Direct ower Direct Crowbar ower Direct dB T.. Splitter 1 & 2 Jumper -20dB T.. Input -20dB T.. Input -20dB T.. Launch Amplifier Dual Fward Segmentation Module NET NET Input -20dB T.. Input -20dB T.. -20dB T.. Splitter 5 & 6 Jumper -20dB T ower Direct ower Direct ower Direct 4-30dB T dB T dB T.. erse Router Optical Interface Board F2 Status Local Insert Return Router lug-in Location LF LF Fward Redundancy lug-in Location Status #1 XMTR 75 Term 75 Term #2 #3 #4 XMTR #1 RCVR -20dB T #2 #3 RCVR -20dB T #4 rimary ower Supply Secondary ower Supply T T F1 Laser Diode Laser Diode hoto Diode hoto Diode Fiber Management Tray 4

5 Model 6944 Four t Optoelectronic Node 5-42/ MHz Quad Fward and Quad erse Segmentation Four Fward Optical Receivers and Four erse Optical Transmitters 1-30dB T.. BYASS ower Direct 1-20dB T.. Splitter 1 & 2 Jumper Input -20dB T.. Launch Amplifier Quad Fward Segmentation Module NET NET Input -20dB T.. -20dB T.. 4 ower Direct 4-30dB T dB T dB T.. ower Direct Crowbar ower Direct 3-20dB T.. Input -20dB T.. NET NET Input -20dB T.. Splitter 5 & 6 Jumper -20dB T.. 6 ower Direct ower Direct -30dB T dB T.. F2 erse Router Status Local Insert LF LF LF LF Optical Interface Board Status Fward Redundancy lug -in Location XMTR XMTR XMTR XMTR RCVR -20dB T RCVR -20dB T RCVR -20dB T RCVR -20dB T rimary ower Supply Secondary ower Supply T T T T F1 Laser Diode Laser Diode Laser Diode Laser Diode hoto Diode hoto Diode hoto Diode hoto Diode Fiber Management Tray 5

6 Model 6944 Four t Optoelectronic Node 5-42/ MHz Six osition Optical Interface Board with Fward and erse lug-in Modules erse Router Module lug-in Location Status Fward Redundancy Module Fward Narrowcast Module lug-in Location #1 #2 #1 #2 #3 #4 p/n osition Optical Interface Board f 6944 (installed in housing lid) In (from launch amp) Status -27 db DC-20 Out Local Insert LF Status Out p/n Standard (1X) erse Router Module (Two Wide) 5-42 MHz (used when reverse segmentation is not needed, allows redundancy) p/n Fward Redundancy Module (used f redundancy with either dual no segmentation) In (from launch amp) Status -27 db LF LF DC-20 DC-10 Local Insert Status Out p/n Dual Segmentation (2X) erse Router Module (Two Wide) 5-42 MHz (no redundancy) p/n Fward Narrowcast (Tiering) Module (used f combining broadcast and narrowcast RX outputs, allows redundancy) 6

7 Model 6944 Four t Optoelectronic Node 5-42/ MHz Eight osition Optical Interface Board with Fward and erse lug-in Modules erse Router Module lug-in Location Status Fward Redundancy Module Fward Narrowcast Module lug-in Location #1 #2 #3 #4 #1 #2 #3 #4 p/n osition Optical Interface Board f 6944 (Installed in housing lid) Status In (from launch amp) DC-20 Out -27 db Local Insert LF Status Out p/n Standard (1X) erse Router Module (Four Wide) 5-42 MHz (used when reverse segmentation is not needed, allows redundancy) p/n Fward Redundancy Module (used f redundancy with either dual no segmentation) Status -27 db Local Insert LF In (from launch amp) LF p/n Dual Segmentation (2X) erse Router Module (Four Wide), 5-42 MHz (allows redundancy) In (from launch amp) p/n DC-20 Status Out DC-10 Fward Narrowcast (Tiering) Module (used f combining broadcast and narrowcast RX outputs, allows redundancy) Status -27 db LF LF LF LF Local Insert p/n Quad Segmentation (4X) erse Router Module (Four Wide) 5-42 MHz (no redundancy) 7

8 Model 6944 Four t Optoelectronic Node 5-42/ MHz Optical Section Specifications Optical Section - Fward Receiver Module Units 6944 Standard RX Notes Wavelength nm 1310 and 1550 Optical Input Range mw dbm 0.5 to to + 2 ass Band MHz Frequency Response db ± Tilt (± 1.5 db) db 0 Optical Input Test oint (± 20%) V DC 1V/mW Optical Input ower Threshold f On/Off dbm -4 / -6 3 (f Redundancy) RF Output 0 dbm Optical Input dbmv Refer to chart (below) 2 RF Output Test oint (± 1.0 db) db - 20 Receiver RF Output Level Vs Transmitter OMI (using Standard Receiver) Minimum RF Output Level 2 (dbmv) % 2.50% 2.75% 3.00% 3.25% 3.50% 3.75% 4.00% 4.25% Transmitter OMI per Channel 1310 nm 1550 nm Notes f Optical Section Specifications: 1. F fward receiver module only. Does not include frequency response contributions from fward optical transmitter. 2. Minimum receiver RF output level f the stated transmitter percent OMI/ch. (Optical Modulation Index per channel), with receiver optical input power of 0 dbm. To determine RF output levels at other optical input power, add ( subtract) 2 db in RF level f each 1 db increase ( decrease) in receiver optical input power. 3. Redundant Control Module (RCM) status moniting transponder is required f redundancy. Threshold stated is f RCM. Threshold is adjustable via element management software if Transponder is used (TNCS equivalent). Optical input power below the Off threshold causes an RF switch from rimary to Redundant. Optical input power above the On threshold causes an RF switch back to rimary. F reverse optical transmitter and link perfmance, see the Analog erse Optical Transmitters f Model 6940/6944 and GainMaker Optoelectronic Stations data sheet, and the Model 6940/44 bdr data sheet(s). Unless otherwise noted, the above specifications reflect typical station perfmance at stated reference levels in the recommended operating configuration(s). Unless otherwise noted, specifications are based on measurements made in accdance with NCTA Recommended ractices f Measurements on Cable Television Systems using standard frequency assignments and are referenced to 68 F (20 C). 8

9 Model 6944 Four t Optoelectronic Node 5-42/ MHz RF Section Specifications General Station erfmance Units Fward erse Notes ass Band MHz Return Loss db Fwd t to t Isolation MHz db 60 see erse Station 12,13 (with jumper) MHz 50 erfmance Fwd t to t Isolation MHz db 60 see erse Station 13 (with splitter) MHz 40 erfmance Hum 12 A db 70 ( MHz) 60 (5-10 MHz) db 65 ( MHz) 65 (11-42 MHz) Hum 15 A db 65 ( MHz) 60 (5-10 MHz) db 60 ( MHz) 65 (11-42 MHz) Internal RF Test oints (±1.0 db) db RF Test oints (±1.5 db) db Launch Amplifier erfmance - Fward Units Fward Notes Amplifier Type -- HD Operational Gain (minimum) db 26 4,12 Frequency Response db ± Internal Tilt (±1 db) db +10 1,3 Noise Reference Output 870 MHz 750 MHz 650 MHz 550 MHz 55 MHz 870 MHz 750 MHz 650 MHz 550 MHz 55 MHz db dbmv Reference Output Tilt ( MHz) db ,5 78 NTSC channels (CW) with digital 15 Composite Triple Beat db 74 6 Cross Modulation db 71 6 Composite Second Order (high side) db NTSC channels (CW) with digital 16 Composite Triple Beat db 69 6 Cross Modulation db 66 6 Composite Second Order (high side) db NTSC channels (CW) with digital 17 Composite Triple Beat db 65 6 Cross Modulation db 62 6 Composite Second Order (high side) db Fward Insertion Loss Optical Interface Board and lug-ins (Loss from specified optical receiver RF output to launch amplifier RF input) Units with no Module Installed with Redundancy Module Installed with Narrowcast Module Installed Receiver position 1 db Receiver position 2 db Receiver position 3 and 4 db Notes Unless otherwise noted, the above specifications reflect typical station perfmance at stated reference levels in the recommended operating configuration(s). Unless otherwise noted, specifications are based on measurements made in accdance with NCTA Recommended ractices f Measurements on Cable Television Systems using standard frequency assignments and are referenced to 68 F (20 C). 9

10 Model 6944 Four t Optoelectronic Node 5-42/ MHz RF Section Specifications, continued Launch Amplifier erfmance - erse Units erse Notes Frequency Response db +/ Internal Tilt (+/- 1 db) db Insertion Loss db ,11 Station erfmance - erse Units With no With Dual With Quad Notes (Station pt input to optical transmitter input) segmentation segmentation segmentation Amplifier Type -- ath to ath Isolation db na > 50 > Insertion Loss db ,11 Noise Figure db ,11 Reference Output 5 and 42 MHz dbmv NTSC Channels (CW) Composite Triple Beat db Cross Modulation db Composite Second Order db Station Delay Characteristics Fward (Chrominance to Luminance Delay) erse (Group Delay in 1.5 MHz BW) Frequency (MHz) Delay (ns) Frequency (MHz) Delay (ns) Unless otherwise noted, the above specifications reflect typical station perfmance at stated reference levels in the recommended operating configuration(s). Unless otherwise noted, specifications are based on measurements made in accdance with NCTA Recommended ractices f Measurements on Cable Television Systems using standard frequency assignments and are referenced to 68 F (20 C). 10

11 Model 6944 Four t Optoelectronic Node 5-42/ MHz RF Section Specifications, continued Notes f RF Section Specifications: 1. Reference output tilt and internal tilt are both Linear tilt. 2. Launch amplifier fward noise figure specified with interstage equalizer (IS) installed to achieve reference tilt. 3. Fward internal tilt specified with facty installed 0 db IS. 4. Launch amplifier fward gain from RF input to station output pt, with IS installed to achieve reference tilt. Stated gain applies f all fward segmentation configurations. 5. The fward reference output tilt specified is achieved via field installation of appropriate IS, in conjunction with the internal tilt of the launch amplifier and the tilt associated with the optical link (transmitter/receiver combination). 6. Station perfmance can be determined by combining optic perfmance and launch amplifier perfmance. Stated disttion perfmance is f launch amplifier section operated at reference output levels and tilt. 7. erse output reference level at the RF input to the optical transmitter (RF output of specified reverse plug-in module). 8. Launch amplifier reverse insertion loss from station reverse input(s) to launch amplifier reverse output. Launch amplifier module has passive loss only in the reverse path (no gain stage). 9. Station reverse insertion loss from station reverse input(s) to the RF input of the optical transmitter (RF output of the specified reverse plug-in module). 10. erse noise figure at station input, with specified degree of reverse segmentation (appropriate reverse plug-in module installed in optical interface board) and 0 db reverse input pad in launch amplifier. 11. All reverse specifications are with reverse switch installed. 12. With jumper installed in launch amplifier RF signal direct location(s). 13. Fward pt-to-pt isolation is specified as the isolation between any two pts that are configured to be on separate segmentation paths. This is the minimum loss that a fward signal measured at any output pt will incur if measured at an alternate (undriven) pt. 14. erse path-to-path isolation is specified as the isolation between any two reverse paths that are configured as separate segmentation paths. This is the minimum loss that a reverse signal present at the input of any optical transmitter will incur if measured at an alternate (undriven) transmitter input. 15. Digital refers to MHz loading with 53 QAM carriers at -6 db relative to analog video carrier levels. 16. Digital refers to MHz loading with 20 QAM carriers at -6 db relative to analog video carrier levels. 17. Digital refers to MHz loading with 37 QAM carriers at -6 db relative to analog video carrier levels. 18. Insertion loss from optical receiver RF output to launch amplifier RF input, with specified fward plug-in module installed in the optical interface board. Subtract this loss from the launch amplifier operational gain to determine fward station gain from optical receiver output to station output. 19. Model 6944 Node with bdr has minimum reverse return loss of 15 db. 11

12 Model 6944 Four t Optoelectronic Node 5-42/ MHz Specifications Electrical Units Notes Max. Through Current (continuous) Amps 15 Max. Through Current (surge) Amps 25 Component DC ower Consumption VDC 1 Launch Amplifier with 4 HD hybrids Amps Standard (1X) Fward Configuration Module Amps Dual (2X) Fward Segmentation Module Amps Quad (4X) Fward Segmentation Module Amps Standard (1X) erse Router Module Amps Dual Segmentation (2X) erse Router Module Amps Quad Segmentation (4X) erse Router Module Amps Fward Redundancy Module Amps 0.04 Fward Narrowcast Module Amps 0.04 Status Moniting Transponder Amps Standard Optical Receiver Amps High Gain Optical Receiver Amps /44 erse Transmitter - High Gain F Amps /44 erse Transmitter - High Gain DFB Amps /44 erse Amps ower Supply DC Current Rating Amps ower Supply Operating Efficiency % 85 Input Low Voltage Cutoff V 33 Minimum Restart Voltage V 41 Station owering Data 6944 Station I DC (Amps at 24 V DC) Voltage x1 Configuration Current (A) (1 Std Receiver & 1 DFB F 2.59 ower (W) Transmitter) 2x2 Configuration Current (A) (2 Std Receivers & 2 DFB F 2.96 ower (W) Transmitters) 4x4 Configuration Current (A) (4 Std Receivers & 4 DFB F Transmitters) 4.09 ower (W) Data is based on stations configured f 2-way operation with status moniting transponder. currents specified are based on measurements made with typical CATV type ferro-resonant power supply (quasi-square wave), and standard version DC power supply (pn ). Note: 1. The total DC power consumption of installed components should not exceed the power supply DC current rating. Environmental Units Operating Temperature Range degrees -40 F to 140 F (-40 C to 60 C) Relative Humidity Range percent 5 to 95 Mechanical Housing Dimensions Weight 20.2 in. L x 10.8 in. H x 10.8 in. D Station with 2 RX, 2 TX, 2 power supplies: 39 lbs (17.7 kg) (51.3 cm L x 27.4 cm H x 27.4 cm D) Station with 4 RX, 4 TX, 2 power supplies: 42 lbs (19.1 kg) 12

13 Model 6944 Four t Optoelectronic Node 5-42/ MHz Ordering Infmation The risma Node Ordering Matrix provides dering infmation f configured nodes. This page contains dering infmation f required and optional accessies that may not be included as part of a configured node. lease consult with Sales Access Netwks Applications Engineering to determine the best configuration f your particular need. The following Required Accessies must be dered separately (not included via risma Node Ordering Matrix): Required Accessies f Model 6944 Node lug-in ads (attenuats) 1 required per Fward Fiber Optic Receiver Output 1 required per each erse RF Input used 1 required per erse Fiber Optic Transmitter lug-in Fward Equalizer - Available in 1.5 db steps from 0 to 15 db at 870 MHz 1 required per Fward RF output* *note when using the standard (1x) fward configuration module, the on that module (common to all 4 outputs) may also be used to set output tilt. art Number See ad (attenuat) part number table See /Inverse part number table The following Accessies may be dered separately: Optical Transmitters, Receivers and Related arts Note: Transmitters and Receivers include coax cable f connection to launch amplifier art Number 6940/44 - Standard Gain Optical Receiver with SC/ connect /44 - Standard Gain Optical Receiver with SC/UC connect /44 - High Gain Optical Receiver with SC/ connect * /44 - High Gain Optical Receiver with SC/UC connect * nm F Optical Transmitter - High Gain, with SC/ connect nm F Optical Transmitter - High Gain, with SC/UC connect nm DFB Optical Transmitter - High Gain, with SC/ connect nm DFB Optical Transmitter - High Gain, with SC/UC connect nm DFB Optical Transmitter - High Gain, with SC/ connect nm DFB Optical Transmitter - High Gain, with SC/UC connect SC/ (green) Bulkhead Mating Adapt (mounts in fiber handling tray), (qty 10) SC/UC (blue) Bulkhead Mating Adapt (mounts in fiber handling tray), (qty 10) lug-in Modules f 6944 Optical Interface Board Use with Optical Interface Board: 6 osition pn osition pn Std. erse Router Module (4 wide), 5-42 MHz - X Dual Segmentation (2X) erse Router Module (4 wide), 5-42 MHz - X Quad Segmentation (4X) erse Router Module(4 wide), 5-42 MHz - X Standard (1X) erse Router Module (2 wide), 5-42 MHz X Dual Segmentation (2X) erse Router Module (2 wide), 5-42 MHz X Fward Redundancy Module X X Fward Narrowcast Module X X lug-in Modules f Launch Amplifier 2 Way RF Splitter (f activation of auxiliary pts) Standard (1X) Fward Configuration Module (f no segmentation) Dual (2X) Fward Segmentation Module Quad (4X) Fward Segmentation Module /44 erse (one may be dered f each reverse input pt) Related Equipment 6940/44 Standard DC ower Supply V /44 Crowbar Surge rotect Redundant Control Module - Required f receiver redundancy operation when Status Moniting Transponder is not used Status Moniting Transponder See Transponder Data Sheet 75 Ohm Transmitter Terminat (used when no TX in redundant slot) Ohm SMB Terminat (f female SMB connect termination) SMB to F Test Cable Assembly /44 RF Test robe * Standard gain receiver is recommended. 13

Model 6944 Four t Optoelectronic Node 5-42/54-870 MHz Ordering Infmation, continued Fward Equalizers / Inverse Equalizers 870 MHz Linear Fward Equalizers art Number 0 db (jumper) 717929 1.

14 Model 6944 Four t Optoelectronic Node 5-42/ MHz Ordering Infmation, continued Fward Equalizers / Inverse Equalizers 870 MHz Linear Fward Equalizers art Number 0 db (jumper) db db db db db db db db db db MHz Inverse Equalizers art Number 1.5 db db db db db db db ads (attenuats) ad Value (db) art Number ad Value (db) art Number ohm terminat Scientific-Atlanta, the Scientific-Atlanta logo, risma, and GainMaker are registered trademarks of Scientific-Atlanta, Inc. bdr is a trademark of Scientific-Atlanta, Inc. Specifications and product availability are subject to change without notice Scientific-Atlanta, Inc. All rights reserved. Scientific-Atlanta, Inc art Number E May

Model 6942 Four Port Optoelectronic Node 870 MHz with 42/54 MHz Split

Model 6942 Four Port Optoelectronic Node 870 MHz with 42/54 MHz Split Optoelectronics Model 6942 Four ort Optoelectronic Node 870 MHz with 42/54 MHz Split Description The Model 6942 Node is a high performance, four output optoelectronic node. The Model 6942 Node can be configured