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1. Figure 4 4 LCe 4 User Interface Software Install Dialogue Boxes 4 4 304823 A Rev 01 Console Port Interface LCe 4 User Interface Software Access Screen Figure 4 5 displays the LCe 4 User Interface screen when the software is launched The current revision number of the software is displayed on its title revision screen prior to opening the main screen functions are entered and processed via the main screen Descriptions of each function selection are provided in paragraphs following the main screen figure Fai ya Figure 4 5 LCe 4 User Interface Main Screen LCe 4 User Interface Main Screen is divided into six areas System Status Unit Configuration e Network A Configuration Network B Configuration Status Bar 304823 A Rev 01 4 5 LCe 4 Integrated Headend Controller Installation Manual System Com Port Baud Rate The System area of the LCe 4 User Interface main screen is where you Select serial port of the PC that connects you to LCe Choose the baud rate at which you wish PC to operate Enter a phone number and initiate the dial up connection process nitiate the direct connection process Refer to the Remote Connector Cabling section for information on connecting your PC to the LCe Use the Comm 1 and Comm 2 option buttons to select the Com Port that you will use to connect the PC to the LCe Use the 9600 a
2. The displayed value on the LCD or Remote User Interface is accurate to 4 dB When the RF Level Adjust Mode is selected the first line of the display will read RFout XX X dBmV where XX X is the currently measured RF power To set the RF level cycle the MODE button to the XX X dBmV display The RF level can now be adjusted using the UP DOWN arrow buttons While in this mode the approximate RF output level will be displayed on the top line of the Display If the RF level is too high or too low an appropriate warning will be displayed RF Output Enable When the RF Output Enable Mode is selected and the output is currently enabled the first line of the display will read RFout Enabled When the RF Output Enable Mode is selected and the output is currently disabled the first line of the display will read RFout Disabled To Enable or Disable the RF Output cycle the MODE button to the above display The RF Output status can then be adjusted using the UP DOWN arrow buttons Depressing either button will cause the display to toggle between Enabled and Disabled 3 10 304823 A Rev 01 Operator Instructions Remote Address When the Remote Address Mode 15 selected the first line of the display will read e Address where XXX 15 current remote address To select a new Remote Address cycle the MODE button to the above display The selected address can then be changed usi
3. 4 Integrated Controller Installation Manual NORTEL NETWORKS LCe 4 Integrated Headend Controller Installation Manual Radio Frequency Interference Statement NOTE This equipment has been tested and found to 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 instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which cause the user will be required to correct the interference at his own expense This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications Le pr sent appareil num rique n met pas de bruits radio lectriques d passant les limites applicables aux appar eils num riques de classe A pr scrite dans le R glement sur le brouillage radio lectrique dict par le Minist re des Communications du Canada To maintain compliance with FCC radio frequency emission limits the use of quadshield RG 6 U type CATV cable is required for connection to the CATV s
4. 1 CableTVTX Cable TV Sync Figure 1 1 LCe 4 Integrated Headend Controller Wiring complexity is minimized by integrating the required components for RF level settings to and from the headend reference nodes Only RF connections for the upstream and downstream channels are required providing an easy to manage wiring plan for the headend The is at the heart of the Nortel Networks LANcity cable modem Plug and Play technology minimizing the installation and maintenance costs of a data network A cable modem need only be physically installed at the customer premises with no local configuration or cable adjustment required Functions such as channel selection transmit level adjustment frequency effect compensation and bandwidth allocation are done automatically and periodically under the control of the LCe The cable TV data channel is part of the worldwide Internet and the LCe provides the connectivity Integrating a very high performance bridge architecture provides interconnectivity between multiple data channels and an Internet router The open and scalable Nortel Networks LANcity network architecture enables either direct connectivity through the Ethernet port or a routed or switched solution using equipment from the leading internetworking vendors The LCe system is frequency agile over its operating range of 8 75 to 42 MHz upstream and 88 to 750 MHz downstre
5. Parameters Response Set IF Attenuation Description Command Code Parameters Response Sets input frequency for the specified network FI Desired frequency in MHz in the form XXX XX Leading zeros are optional but not required The decimal point and two trailing characters are required Valid input frequencies are between 11 75 MHz and 110 00 MHz Valid trailing characters are 00 25 50 and 75 OK or ERR or CRC Sets output frequency for the specified network FO Desired frequency in MHz in the form XXX XX Leading zeros are optional but not required The decimal point and two trailing characters are required The range of acceptable output frequencies is 55 00 MHz to 860 00 MHz Allowed trailing characters are 00 25 50 and 75 OK or ERR or CRC Sets the IF attenuation for the specified network AI Desired IF output attenuation in dB in the form XX XX Leading zeros are optional but not required The decimal point and two trailing characters are required Valid attenuation values are between 0 dB and 48 dB in 0 25 dB steps Valid trailing characters are 00 25 50 or 75 OK or ERR or CRC 304823 A Rev 01 LCe 4 Integrated Headend Controller Installation Manual Set RF Attenuation Description Command Code Parameters Response Enable RF Output Description Command Code Parameters Response Disable RF Output Description Command Code Parameters
6. Eod 4 6 des o T u u R 4 6 Bud Pr RERO 4 6 Local GOO tl u 4 6 rdum yj 4 6 4 7 Unit ua asap aaa N 4 7 SS M URNE 4 7 bocal Cono 4 7 Ei 1 4 7 PAL T pl in aksu TETTE 4 7 Luc Eme me uuu ua sn a 4 8 gp eT M 4 8 DE MEE UNT 4 8 Liga eter CE 4 9 tU TU i T IIT 4 9 imi ERI 4 9 LEVEI eme ERNE 4 9 BRU edis a aa Po Gb ON E RO re Card 4 9 Menor T tC Saa Qa huu commen 4 10 TP nas 4 10 Usno Timia SS 4 10 Boni nU NE a sn EOS 4 10 I 4 10 siad E emi c SM ODE S das shna khas Fed dO 4 10 le Fun 4 10 Generating Commands with Windows Based Terminal Emulators 4 11 L gia e 4 11 Si MR EE 4 11 uice ss iu u u uu T vcr 4 14 Command Descriptions and Syst
7. IF Level User set to 37 dBmV 0 4 dB with every frequency change Forward channel output level 42 dBmV to 58 dBmV adjustable Return channel input level auto configured to 1 dBmV 2 dB Gain 57 dB Variable 0 to 16 dB allowed Gain variation over any 5 MHz channel 2 0 dB Peak to Valley Input frequency range 11 75 to 39 MHz Center Frequency Selectable in 250 KHz increments Output frequency range 91 to 747 MHz Center Frequency Selectable in 250 KHz increments Stability 2 0 KHz 0 to 40 C Impedance all ports 75 Ohms Output return loss gt 8 dB In Operating Channel Input return loss gt 12 dB 5 to 42 MHz Spurs harmonics gt 55 dBc 54 to 750 MHz Noise Figure 9 dB at maximum gain Cable Television Network Requirements Allowed Amplitude variation inband Forward channel 1 dB MHz 5 dB total Reverse channel 1 dB MHz 5 dB total Allowed Group delay variation inband Forward channel 60 nsec MHz 240 nsec total Reverse channel 200 nsec MHz 800 nsec total Allowed tap to tap level variation 27 dB 304823 A Rev 01 Chapter 2 System Installation This chapter describes the set up procedures for the installation of the LCe 4 with detailed descriptions of set up requirements Unpacking and Inspection Carefully remove the equipment from its packing material and set it on a solid surface such as a table or desk If it appears damaged in any way notify the carrier and keep all packing materials for i
8. lt start gt ADD lt sp gt NET lt sp gt CC lt sp gt PARM lt sp gt CRC lt cr gt Most commands to a single network at a single address may be concatenated by using an ASCII ampersand amp character see the detailed command descriptions for commands that cannot be concatenated Concatenated commands will be in one of the following two general formats lt start gt ADD lt sp gt NET lt sp gt CC lt sp gt amp lt sp gt CC lt sp gt lt sp gt CRC lt cr gt or lt start gt ADD lt sp gt NET lt sp gt CC lt sp gt PARM lt sp gt amp lt sp gt CC lt sp gt lt sp gt CRC lt cr gt 304823 A Rev 01 4 11 LCe 4 Integrated Headend Controller Installation Manual The message must conclude with either a carriage return ASCII 13 or a carriage return and linefeed ASCII 13 followed by ASCII 10 ADD Address three ASCII characters Addresses are three digit numbers Three digits including leading zeros are required to correctly define an address NET Network one ASCII character A Network A B z Network B CC Command Code two ASCII characters FI Set Input Frequency FO z Set Output Frequency AI Set IF Attenuation AR Set RF Attenuation OE Enable RF Output OD Disable RF Output LE Enable Local Control LD Disable Local Control SU Unit Status Request SC z Configuration Status Request CRC CRC 16 checksum three characters The checksum is preferred but not required If the checksum is used the
9. 304823 A Rev 01 DO CUT FOLD HERE APPLY POSTAGE HERE Nortel Networks Broadband Technology Division 200 Bulfinch Drive Andover MA 01810 Attn Technical Publications DO NOT CUT FOLD HERE AND TAPE Nortel Networks Cable Modems The World Standard in Cable Modems Printed in U S A
10. SU None OK or ERR or CRC If the response is OK then the following parameters will also be returned in space delimited format in the order shown below Note X may be replaced by any valid character other characters will be as shown Parameter Units Format Example Model XXXXXXXX FT3020 Options XXXXXXXX ABCD Hardware Revision XXXX 1 00 Software Revision XXXX 1 00 Controller SN XXXXXX 012345 Display SN XXXXXX 012345 Unit A Upconverter SN XXXXXX 012345 Unit A Downconverter SN XXXXXX 012345 Unit B Upconverter SN XXXXXX 012345 Unit B Downconverter SN XXXXXX 012345 Miscellaneous 132 chars 304823 A Rev 01 LCe 4 Integrated Headend Controller Installation Manual Status Configuration Request Description The Status Configuration Request command returns the current configuration The detailed contents of the reply are shown in the response section The network 15 irrelevant and can be either or B This command cannot be concatenated Command Code SC Parameters None Response OK or ERR or CRC If the response is OK then the following parameters will also be returned in space delimited format in the order shown below Note X may be replaced by any valid character other characters will be as shown Parameter Units Format Example Error Code XXXX 0D63 Local Control EorD Temperature
11. XX 50 Network A A A Input Freq MHz XXX XX 110 00 IF Attenuation dB XX X 10 5 IF Power dBmV XX X 37 1 Output Freq MHz XXX XX 408 25 RF Attenuation dB 05 5 Power dBmV 57 0 Output E or D E Network B B B Input Freq MHz XXX XX 011 75 IF Attenuation dB XX X 04 0 IF Power dBmV XX X 36 9 Output Freq MHz XXX XX 408 25 RF Attenuation dB 06 0 Power dBmV 58 3 Output E or D E 4 18 304823 A Rev 01 Console Port Interface CRC Calculations Example The CRC calculations are performed using a table driven approach The polynomial used is 16 15 X 2 1 Only the basic algorithm and lookup table will be described here Sample code is also included for generating the lookup table For further information this approach is described in detail in the following paper Perez Aram Byte wise CRC Calculations IEEE Micro June 1983 pp 40 50 The algorithm for the CRC calculation is as follows 1 Exclusive OR the input byte with the low order byte of the CRC register to get X 2 Shift the CRC register eight bits to the right 3 Exclusive OR the CRC register with the contents of the table using X as an index 4 Repeat steps 1 through 3 for all message bytes Notes The CRC register is 16 bits long and should be cleared to 0 before beginning the calculations For the transmit message After all the message bytes have been processed th
12. Chapter 1 Introduction BOIS DU DEO on dete cue Ebr D MUI E OMM ME 1 1 Installation Tools and Equipment Required rne 1 1 ps I U eb RE 1 2 Installation and Verification Equipment You Need u 1 2 Additional Installation Equipment You May Need 1 2 Ph ga Desorption 1 2 LCe 4 Dual Headend Reference Cable Modems 1 4 Headend Reference Cable Modem Functions 1 4 Headend Reference Cable Modem LEDS 1 4 L2 4 Dual Freguenoy Translator uu 1 5 BEI CoO E D T 1 5 F li ir XY u u n bud 1 5 Sis li ONS Oi NE 1 5 Eo n OO boissons dard utc ed veg a au Dn pa x ans od t nO 1 7 installation and Operating Environment J L ien rtm 1 7 Util OL SE 1 7 Mogulalon Uu u uu TES 1 7 Regulatory HOG INIA m 1 7 1 8 Cable Television Network Requirements 1 8 304823 A Rev 01 vii LCe 4 Integrated Headend Controller Installation Manual Chapter 2 System Installation Unpackno and NCD P c EN 2 1 nicer 2 1 L G TP nU T US 2 1 F PR Q il u a 2 1 pcs eris Fiir
13. Email United States 800 LANCcity 978 682 3200 Support lancity com and Canada 978 916 3700 direct Attn Support Contracts Europe 33 4 92 96 69 66 33 4 92 96 69 96 Information about customer service is also available on the World Wide Web at support baynetworks com How to Get Help If you purchased a service contract for your Nortel Networks product from a distributor or authorized reseller contact the technical support staff for that distributor or reseller for assistance If you purchased a Nortel Networks service program call one of the following Nortel Networks Technical Solutions Centers Support Center Telephone Fax number Email number Andover MA 800 2LANWAN 978 682 3200 support lancity com 978 916 3700 Attn Support Contracts Valbonne France 33 4 92 96 69 68 33 4 92 96 69 98 baypoint baynetworks For cable modems and cable modem family products use Express Routing Code 174 304823 A Rev 01 XV LCe 4 Integrated Headend Controller Installation Manual Associated Document Refer to the following document for further information Nortel Networks Broadband Technology Division User Guide Provisioning Server LCn describes how to install and use the basic functions of the Provisioning Server LCn Also included is information on setting up a network using the LCn Safety Precautions This document provides safet
14. in whole or in part Except as expressly provided in this Agreement Licensee may not copy or transfer the Software or user manuals in whole or in part The Software and user manuals embody Bay Networks and its licensors confidential and proprietary intellectual property Licensee shall not sublicense assign or otherwise disclose to any third party the Software or any information about the operation design performance or implementation of the Software and user manuals that is confidential to Bay Networks and its licensors however Licensee may grant permission to its consultants subcontractors and agents to use the Software at Licensee s facility provided they have agreed to use the Software only in accordance with the terms of this license 3 Limited warranty Bay Networks warrants each item of Software as delivered by Bay Networks and properly installed and operated on Bay Networks hardware or other equipment it is originally licensed for to function substantially as described in its accompanying user manual during its warranty period which begins on the date Software is first shipped to Licensee If any item of Software fails to so function during its warranty period as the sole remedy Bay Networks will at its discretion provide a suitable fix patch or workaround for the problem that may be included in a future Software release Bay Networks further warrants to Licensee that the media on which the Software is provided will be free from
15. tilt and micro reflections Transmit periodic broadcasts of the base network parameters allowing newly installed CDMs to scan for the assigned receive frequency and then obtain the information needed to contact the LCn Headend Reference Cable Modem LEDs Following is a brief description of the Headend Reference Cable Modem LEDs Ethernet TX Indicates Ethernet Transmit Power Indicates AC Power is ON Cable TV TX Indicates Cable TV Transmit Cable TV Sync Indicates Diagnostic Status and Block Synchronization achieved The Headend Reference Cable Modem goes through the following sequence when it is connected to a properly rated power outlet using the supplied power cord The Provisioning Server LCn must be connected during initial power up and the LCn must be configured for the LCe in order for the Headend Reference Cable Modems to achieve Block Sync The Power LED activates within three seconds of plugging in the LCe If this does not happen unplug the power and verify that the power source is functional The LCe Power Up Diagnostics run during the first 30 seconds after power is on The diagnostics use all four LEDs during the test 304823 A Rev 01 Introduction The LCe s Headend Reference Cable Modems receive their authorization from the LCn and achieve Block Sync The Power LED and the Cable TV Sync LED will remain illuminated If no remote modems are on the network the LCe will periodically drop Block Sync and then rees
16. 00 240 00 241 75 28 O 247 25 249 00 246 00 247 75 29 P 253 25 255 00 252 00 253 75 30 Q 259 25 261 00 258 00 259 75 31 R 265 25 267 00 264 00 265 75 32 S 27125 273 00 270 00 271 75 33 T 277 25 279 00 276 00 277 75 34 U 283 25 285 00 282 00 283 75 35 V 289 25 291 00 288 00 289 75 36 W 295 25 297 00 294 00 295 75 37 AA 301 25 303 00 300 00 301 75 38 BB 307 25 309 00 306 00 307 75 39 313 25 315 00 312 00 313 75 40 DD 319 25 321 00 318 00 319 75 41 EE 325 25 327 00 324 00 325 75 42 331 25 333 00 330 00 331 75 43 337 25 339 00 336 00 337 75 44 343 25 345 00 342 00 343 75 45 349 25 351 00 348 00 349 75 A 2 304823 A Rev 01 EIA Old Standard Data HRC Video HRC Data NCTA Designation Video Channel Frequency Channel Center Channel Historical Frequency Center Frequency Reference Frequency 46 JJ 355 25 357 00 354 00 355 75 47 KK 361 25 363 00 360 00 361 75 48 LL 367 25 369 00 366 00 367 75 49 MM 373 25 375 00 372 00 373 75 50 NN 379 25 381 00 378 00 379 75 51 OO 385 25 387 00 384 00 385 75 52 PP 391 25 393 00 390 00 391 75 53 QQ 397 25 399 00 396 00 397 75 54 RR 403 25 405 00 402 00 403 75 55 55 409 25 411 00 408 00 409 75 56 415 25 417 00 414 00 415 75 57 UU 421 25 423 00 420 00 421 75 58 VV 427 25 429 00 426 00 427 75 59 WW 433 25 435 00 432 00 433
17. 304823 A Rev 01 3 5 LCe 4 Integrated Headend Controller Installation Manual Examples 1 The Network A Block Sync Data output measures 58 dBmV The user defined output requirement is 54 dBmV No signal connected to the Network RF Input Adjust the Network A RF Output Level with the front panel or remote controls until the level reported at the LCD remote display or measurement tool reads the desired level of 54 dBmV 2 The Network B Block Sync Data output measures 57 dBmV The user defined output requirement output is 45 dBmV No signal connected to the Network B RF Input Adjust the Network B RF Output Level with the front panel or remote controls until the level reported at the LCD remote display or measurement tool reads the desired level of 45 dBmV 3 The Network A Block Sync data output measures 58 dBmV The user defined output requirement output level is 55 dBmV No signal connection to the Network A RF input Insert a 3 dB attenuator to the Network A s forward channel output 4 Network B Block Sync data output measures 57 dBmV The user defined output requirement output level is 37 dBmV No signal connection to the Network B forward channel output Insert a 20 dB attenuator to the Network B s forward channel output To monitor the output of Network or B while the Network 15 operational it is recommended to use an output of the forward combiner or to install single tap directio
18. 6240 C7 9241 8 C601 48 3600 88 6600 C8 9601 9 6 0 49 F6C1 89 A6C1 C9 56C0 A 780 4A F781 781 5780 741 4 3740 8 6740 9741 500 4 501 8 501 5500 C5CI 4D 35 0 8D 65 0 CD 95C1 E C481 4E 3480 8E 6480 CE 9481 440 4 441 8 441 5440 10 CC01 50 3C00 90 6C00 D0 9C01 CC0 51 91 DI 5CC0 12 080 52 FD81 92 AD81 D2 5D80 13 CD41 53 3D40 93 6D40 D3 9D41 14 F00 54 FF01 94 AF01 D4 5 00 15 55 3FCO 95 6FC0 D5 9FC1 16 CE81 56 3E80 96 6E80 D6 9 81 17 40 57 FE41 97 41 07 5 40 18 00 58 01 98 01 D8 5 00 19 59 99 6AC0 D9 9AC1 CB81 5 3B80 9A 6B80 DA 9 81 1 40 5 41 9B AB41 DB 5B40 1C C901 5 3900 9 6900 DC 9901 ID 9C0 5D F9C1 9D A9C1 DD 59C0 IE 880 5E F881 9E 881 DE 5880 IF C841 5 3840 9F 6840 DF 9841 4 22 304823 A Rev 01 Console Port Interface X TERM ENTRY XTERM ENTRY XTERM ENTRY XTERM ENTRY 20 0801 60 2800 0 7800 0 8801 21 18 0 61 E8Cl Al B8Cl El 48 0 22 1980 62 981 2 981 2 4980 23 D941 63 2940 A3 7940 E3 8941 24 1B00 64 4 01 4 4 00 25 DBCI 65 2BCO A5 7BCO 8BCI 26 DA81 66 2A80 6 7 80 E6 8 81 27 1 40 67 41 7 41 4 40 28 1 00 68 1 8 1 8 4 00 29 DECI 69 2EC0 A9 9 8ECI
19. 630 00 631 75 93 637 25 639 00 636 00 637 75 94 643 25 645 00 642 00 643 75 100 649 25 651 00 648 00 649 75 101 655 25 657 00 654 00 655 75 102 661 25 663 00 660 00 661 75 103 667 25 669 00 666 00 667 75 104 673 25 675 00 672 00 673 75 105 679 25 681 00 678 00 679 75 106 685 25 687 00 684 00 685 75 107 691 25 693 00 690 00 691 75 108 697 25 699 00 696 00 697 75 109 703 25 705 00 702 00 703 75 110 709 25 711 00 708 00 709 75 111 71525 717 00 714 00 715 75 112 721 25 723 00 720 00 721 75 113 727 25 729 00 726 00 727 75 114 733 25 735 00 732 00 733 75 115 739 25 741 00 738 00 739 75 116 745 25 747 00 744 00 745 75 4 304823 01 Comparison of LCe Products Features DE3804015 Domestic DE3804016 International DE3837033 Domestic DE3837034 International Serial port Remote Interface Software Does not have software package for serial port interface the software scripts are provided in the manual It supports 9600 bps Serial port remote interface software for remote control of the translator settings using a visual basic windows interface Direct serial port connection to PC or through telephone modem at 9600 or 19200bps Windows 95 required Power output value displayed Does not have this feature Power output value displayed in dBmV for constant carrier and QPSK signal on front panel LCD and over remote interface to visual basic graphical
20. 75 60 XX 439 25 441 00 438 00 439 75 61 YY 445 25 447 00 444 00 445 75 62 ZZ 451 25 453 00 450 00 451 75 63 AAA 457 25 459 00 456 00 457 75 64 BBB 463 25 465 00 462 00 463 75 65 CCC 469 25 471 00 468 00 469 75 66 DDD 475 25 477 00 474 00 475 75 67 EEE 481 25 483 00 480 00 481 75 68 FFF 487 25 489 00 486 00 487 75 69 GGG 493 25 495 00 492 00 493 75 70 HHH 499 25 501 00 498 00 499 75 71 III 505 25 507 00 504 00 505 75 72 JJJ 511 25 513 00 510 00 511 75 73 KKK 517 25 519 00 516 00 517 75 74 LLL 523 25 525 00 522 00 523 75 75 MMM 529 25 531 00 528 00 529 75 76 NNN 535 25 537 00 534 00 535 75 71 000 541 25 543 00 540 00 541 75 78 547 25 549 00 546 00 547 75 304823 01 A 3 LCe 4 Integrated Headend Controller Installation Manual EIA Old Standard Data HRC Video HRC Data NCTA Designation Video Channel Frequency Channel Center Channel Historical Frequency Center Frequency Reference Frequency 79 553 25 555 00 552 00 553 75 80 559 25 561 00 558 00 559 75 81 565 25 567 00 564 00 565 75 82 571 25 573 00 570 00 571 75 83 577 25 579 00 576 00 577 75 84 583 25 585 00 582 00 583 75 85 589 25 591 00 588 00 589 75 86 595 25 597 00 594 00 595 75 87 601 25 603 00 600 00 601 75 88 607 25 609 00 606 00 607 75 89 613 25 615 00 612 00 613 75 90 619 25 621 00 618 00 619 75 91 625 25 627 00 624 00 625 75 92 631 25 633 00
21. ETE 2 2 Power UI T 2 3 Rear Panel Coie tna nS ender 2 4 2 2 5 Chapter 3 Operator Instructions Setting LCe s Reverse Channel Input Level 3 1 Selecting the Reverse Channel Attenuation 3 1 Selecting Reverse Attenuation When Multiple Nodes Are Combined 3 3 Maintaining Reverse Channel Signal to Noise Optimization 3 4 Limiting The Number of Combining Segment 3 4 Networks and B Forward Channel Output Level 3 5 Setting LCe s Forward Channel Output Level 3 5 Measuring the LCe QPSK Output Signal _ LLL ca rente ri 3 7 oa iOS G Se u codd Fas at nd ex us tl Gd Oa 3 8 input Fregueney m 3 9 lE 3 9 ABL EV RR URP ERU 3 10 PUP LEVEN AGUSI M 3 10 BE RAO EAN u aa OO 3 10 min PAL ER E 3 11 Chapter 4 Console Port Interface CODE SSSR Mm 4 1 Remo Gonneciar 4 1 Daisy a erem 4 3 LCe 4 Headend Controller User Interface 400000 1000 4 4 Installing The LCe 4 User 4 4 viii 304823 A Rev 01 Table of Contents LCe 4 User Interface Software Access Screen 044400 4 5 EB ID tla ik SS SEES estt
22. Manual Example Value measured on Power Meter Minus 16 28 dBm Value measured on Power Meter Correction Factor lt Power dBm 16 28 dBm 24 82 8 54 dBm To convert to dBmV add the value to 49 dBmV 48 54 49 dBmV 57 54 dBm V Spectrum Analyzer Recommended HP8591E or HP8591C The accuracy of a spectrum analyzer will vary from model to model The two Hewlett Packard models recommended have been used with the following settings and displayed an accuracy within 2 dB 4 dB We cannot guarantee however that the spectrum analyzer will always maintain this level of accuracy as all the variables that could affect the accuracy are not known The QPSK signal is a periodic signal occupying 6 MHz of bandwidth Spectrum Analyzers from other vendors have not been evaluated for this measurement and are likely to measure the QPSK power value differently from the Hewlett Packard Models The equipment manufacturer should be contacted to determine if any calibration factor is required to assure an accurate measured value Set the spectrum analyzer as follows Frequency as required Resolution Bandwidth 3 MHz Video Bandwidth auto or 1 MHz Frequency Span 10 MHz Max Hold On Marker 1 MHz from center frequency Input Impedance Select 75 Ohms from Amplitude menu Operating Controls Four soft touch push buttons and a LCD display are located on the front panel The Unit Select button allows the user to select which network Net
23. all copies Bay Networks is not liable to Licensee for damages in any form solely by reason of the termination of this license 304823 A Rev 01 V LCe 4 Integrated Headend Controller Installation Manual 8 Export and Re export Licensee agrees not to export directly or indirectly the Software or related technical data or information without first obtaining any required export licenses or other governmental approvals Without limiting the foregoing Licensee on behalf of itself and its subsidiaries and affiliates agrees that it will not without first obtaining all export licenses and approvals required by the U S Government 1 export re export transfer or divert any such Software or technical data or any direct product thereof to any country to which such exports or re exports are restricted or embargoed under United States export control laws and regulations or to any national or resident of such restricted or embargoed countries or ii provide the Software or related technical data or information to any military end user or for any military end use including the design development or production of any chemical nuclear or biological weapons 9 General If any provision of this Agreement is held to be invalid or unenforceable by a court of competent jurisdiction the remainder of the provisions of this Agreement shall remain in full force and effect This Agreement will be governed by the laws of the state of California Shou
24. calculation is as follows Do for all message bytes X TXCRC AND 00FF XOR DBTX TXCRC TXCRC 256 XOR TBL X Loop e the CRC onto the outgoing burst LSB first The algorithm for the RX CRC calculation is as follows Do for all message bytes X RXCRC AND 00FF XOR DBRX RXCRC RXCRC 256 TBL X Loop X RXCRC AND 500 XOR TXCRC AND 255 RXCRC RXCRC 256 TBL X X RXCRC AND 00FF XOR TXCRC 256 AND 255 RXCRC RXCRC 256 XOR TBL X At this point all received message bytes have been processed by CRC and the RXCRC should be zero If itis not zero at least one bit error has occurred If it is zero it is assumed that no errors occurred The probability of an error escaping detection is 1 65536 for a 16 bit CRC 4 24 304823 A Rev 01 Console Port Interface Routine Definitions for the CRC routines Variables TBL holds the precomputed lookup table TXCRC stores the computed transmit CRC 16 RXCRC stores the computed receive CRC 16 Public TBL 0 To 255 As Long stores the CRC 16 lookup table Public TXCRC As Long stores the computed TX CRC 16 Public As Long stores the computed RX CRC 16 Routine Initializes the CRC 16 lookup table Public Sub CRC Initialize initialize form XMAX 255 initialize CRC 16 lookup table For X 0 To XMA X7 X And 128 128 X6 X And 64 64 X5 X And 32 32 X4 X And 16 16 X3 X And
25. display Local and remote control of translator Has local control of output disable Does not have remote Has both features output enable control of output disable disable Bandpass filtering 3 3 dB bandpass 6 0 MHz 3 dB bandpass 5 4 MHz Provides dB point improved adjacent channel filtering from the upstream Selectable lock out of local control Does not have local lock out feature Local control can be locked out allowing only remote control of the translator settings also local and remote control can be both enabled Local and remote adjustment of output power Requires tuning a front panel potentiometer and or doing an enable disable of the preamp switch Does not have remote control for adjusting output power Front panel local control with push button interface Remote interface has attenuation values from a pop up menu Translator error code shown on the front panel and remote interface Does not have failure monitoring or coding There are 16 translator failure conditions monitored internally If any of these failures or multiple failures occur they are displayed with the four digit error code This provides the operator with a quick check of the translator condition 304823 A Rev 01 5 LCe 4 Integrated Headend Controller Installation Manual Features DE3804015 Domestic DE3804016 International DE3837033 Domestic DE3837034 Int
26. s HFC signal levels If you are a cable TV technician and or installation technician trained to perform system installations you need to read this manual If you want Go to The LCe s physical description and specifications and or Chapter 1 a list of required tools and materials Set up procedures for the LCe including rack mount Chapter 2 instructions The location and description of the unit s control panel Chapter 3 and status LEDs and how to set input and output frequencies The console port interface for remote management Chapter 4 304823 A Rev 01 Xi LCe 4 Integrated Headend Controller Installation Manual Conventions Used in This Guide angle brackets lt gt bold text brackets Capitalized word ellipsis points italic text quotation marks Screen text separator gt vertical line l Indicate that you choose the text to enter based on the description inside the brackets Do not type the brackets when entering the command Example if command syntax is ping lt address you enter ping 192 32 10 12 Indicates text that you need to enter command names and buttons in menu paths Example Enter wfsm amp Example Use the dinfo command Example DXI gt Interfaces gt PVCs identifies the PVCs button in the window that appears when you select the Interfaces option from the ATM DXI menu Indicate optional elements You can c
27. 2A DF81 2F80 AA 7 80 8 81 2 1F40 6B EF41 AB BF41 EB 4F40 2C 0001 6C 2D00 AC 7D00 EC 8001 20 1DC0 6D EDCI AD BDCI ED 4DCO 2E 1C80 6E 81 81 4 80 2 DC41 6F 2C40 AF 7C40 EF 8C41 30 1400 70 E401 401 FO 4400 31 D4CI 71 24 0 74 0 Fi 84 1 32 D581 72 2580 B2 7580 F2 8581 33 1540 73 E541 B3 B541 F3 4540 34 D701 74 2700 B4 7700 F4 8701 35 17C0 75 E7CI B5 7 5 47 0 36 1680 70 E681 B6 B681 F6 4680 37 D641 TI 2640 B7 7640 F7 8641 38 D201 78 2200 B8 7200 F8 8201 39 12C0 79 E2C1 B9 B2C1 F9 42C0 3A 1380 TA E381 BA B381 FA 4380 3B D341 7B 2340 BB 7340 FB 8341 3C 1100 7C 101 101 4100 3D 7 21C0 BD 71C0 FD 81C1 3E D081 TE 2080 BE 7080 FE 8081 3F 1040 TE E041 BF B041 4040 304823 01 4 23 LCe 4 Integrated Headend Controller Installation Manual Sample Code The sample code shows how to compute the lookup table used in the CRC 16 calculations It also demonstrates how to compute the CRC 16 checksums for both the receive and transmit messages All code was generated using Microsoft Visual Basic Professional Edition Version 5 0 It should also work with other versions Program CRC Sample Code Written by Douglas Fast Date 1997 March 4 Note This sample code generates the CRC 16 lookup table and demonstrates how to compute receive and transmit CRC 16 The polynomial used is 16 15 X42 1 The algorithm for
28. 3dBmVA LCe RF in 1 dBm V 26 dBm V 23 dBm V D 27 dBm V 5 24 dBmV 11 dB 24 dBmV 8 Way Combiner Figure 3 2 Selecting Attenuation When Multiple Nodes Are Combined Maintaining Reverse Channel Signal to Noise Optimization Limiting The Number of Combining Segments As each segment of the network is combined at the headend the noise from each segment will combine and give an aggregate value at the LCe input The number of combined segments should be limited to a number that does not create a signal to noise ratio less than 25 dB This allows 3 dB of headroom from the LCP s 22 dB signal to noise specification Every doubling of segments decreases the base signal to noise ratio by 3 dB 304823 A Rev 01 Operator Instructions LCe Networks and B Forward Channel Output Level The output level is set at the factory with a 1 dBmV signal connected to the reverse channel input of Networks A and B The RF output frequency is set to 627 MHz and the RF Output is adjusted for 55 dBmV The output power over the 91 to 747 MHz range varies by 2 dB When setting gain for the operational frequency do not set the output to greater than 58 dBmV or lower than 42 dBmV as verified with a calibrated measuring device The IF level must be set to 37 dBmV 0 4 dB as shown on the front panel display every time you set change frequency settings Mode 1 See Chapter 1 LCe Controls Mode Information Setting LCe s Forward Chann
29. 52 227 19 and the limitations set out in this license for civilian agencies and subparagraph c 1 ii of the Rights in Technical Data and Computer Software clause of DFARS 252 227 7013 for agencies of the Department of Defense or their successors whichever is applicable 6 Use of Software in the European Community This provision applies to all Software acquired for use within the European Community If Licensee uses the Software within a country in the European Community the Software Directive enacted by the Council of European Communities Directive dated 14 May 1991 will apply to the examination of the Software to facilitate interoperability Licensee agrees to notify Bay Networks of any such intended examination of the Software and may procure support and assistance from Bay Networks 7 and termination This license is effective until terminated however all of the restrictions with respect to Bay Networks copyright in the Software and user manuals will cease being effective at the date of expiration of the Bay Networks copyright those restrictions relating to use and disclosure of Bay Networks confidential information shall continue in effect Licensee may terminate this license at any time The license will automatically terminate if Licensee fails to comply with any of the terms and conditions of the license Upon termination for any reason Licensee will immediately destroy or return to Bay Networks the Software user manuals and
30. 8 8 X2 X And 4 4 X1 X And 2 2 X7 Xor X6 Xor X5 Xor X2 Xor X6 Xor X5 Xor X4 Xor X3 Xor X2 Xor X1 Xor XO X6 Xor X5 X5 Xor X4 5 4 13 X7 Xor X6 2 1 0 X4 Xor X3 R9 X3 Xor X2 R8 X2 Xor X1 R7 R6 X0 R5 0 R4 0 R3 0 R2 0 304823 A Rev 01 4 25 LCe 4 Integrated Headend Controller Installation Manual RI 0 RO R15 TX R15 32768 R14 16384 R13 8192 R12 4096 R11 2048 R10 1024 TX TX R9 512 R8 256 R7 128 R6 64 R5 32 R4 16 R3 8 TX TX R2 4 R1 2 RO TBL X TX Next X End Sub Name CRCTxCompute Purpose Computes the CRC 16 on an array of bytes Arguments bytOutput Contains the input byte array This array must be long enough to also contain the computed CRC i e it must be dimensioned 4 characters longer than required Returns bytOutput Contains the resulting array including the computed CRC 16 Public Sub CRCTxCompute ByRef bytOutput As Byte Dim I As Integer Dim intLength As Integer Dim DBTX As Byte Dim X As Byte TXCRC 0 X 0 intLength UBound bytOutput calculate upper array bound bytOutput intLength 3 Asc add preliminary CRC characters bytOutput intLength 2 Asc V For 0 To intLength 2 compute CRC DBTX bytOutput I X TXCRC And 255 DBTX TXCRC Int IXCRC 256 Xor TBL X Next bytOutput in
31. 8 75 2 55 25 57 00 54 00 59 79 3 61 25 63 00 60 00 61 75 4 67 25 69 00 66 00 67 75 1 IRC A 8 4 73 25 75 00 72 00 73 75 HRC 5 71 25 79 00 78 00 79 75 5 7 79 25 81 00 6 83 25 85 00 84 00 85 75 6 IRC 6 85 25 87 00 95 5 91 25 93 00 90 00 91 75 96 4 97 25 99 00 96 00 97 75 97 3 103 25 105 00 102 00 103 75 98 2 109 25 111 00 108 00 109 75 99 1 115 25 117 00 114 00 115 75 14 121 25 123 00 120 00 121 75 15 127 25 129 00 126 00 127 75 16 133 25 135 00 132 00 133 75 17 D 139 25 141 00 138 00 139 75 18 E 145 25 147 00 144 00 145 75 19 F 151 25 153 00 150 00 151 75 304823 A Rev 01 A 1 LCe 4 Integrated Headend Controller Installation Manual EIA Old Standard Data HRC Video HRC Data NCTA Designation Video Channel Frequency Channel Center Channel Historical Frequency Center Frequency Reference Frequency 20 G 157 25 159 00 156 00 157 75 21 H 163 25 165 00 162 00 163 75 22 I 169 25 171 00 168 00 169 75 7 175 25 177 00 174 00 175 75 181 25 183 00 180 00 181 75 9 187 25 189 00 186 00 187 75 10 193 25 195 00 192 00 193 75 11 199 25 201 00 198 00 199 75 12 205 25 207 00 204 00 205 75 13 211 25 213 00 210 00 211 75 23 J 217 25 219 00 216 00 217 75 24 K 223 25 225 00 222 00 223 75 25 L 229 25 231 00 228 00 229 75 26 M 235 25 237 00 234 00 235 75 27 N 241 25 243
32. A or Net B will be displayed The MODE button allows the user to cycle through each of six different displays The UP DOWN arrow buttons adjust the settings for the currently selected mode If no configuration adjustments are being made via the front panel controls the display back light will shut off after a four minute time out 3 8 304823 A Rev 01 Operator Instructions Input Frequency Adjust After power up initialization the first line of the display will read Fn MHz where XXX XX 15 the last stored frequency at shutdown The displayed frequency corresponds to the frequency at the center of the band 1 channel 8 11 75 17 75 MHz 14 75 MHz To adjust the input frequency use the UP DOWN arrow buttons Single stepping will allow 250 KHz adjustment while keeping the buttons depressed will change the frequency more quickly If the display does not read as above step the MODE button until the top line reads Fin XXX XX MHz and use the UP DOWN arrow buttons to change the input frequency During frequency change the output is muted for five seconds to avoid undesirable interference and mute is displayed in the status line IF Level Adjust The IF level must be adjusted to 37 dBmV 0 4 dB every time the input or output frequencies are set changed When the IF Level Adjust Mode is selected the first line of the display will read dBmV where XX X is the currently meas
33. DC3 Device Control 3 14 24 10100 20 DC4 Device Control 4 15 25 10101 21 U NAK Negative Acknowledgement 16 26 10110 22 V SYN Synchronous Idle 17 27 10111 23 W ETB End of Transmissin Block 18 30 11000 24 X CAN Cancel 19 31 11001 25 Y EM End of Medium 32 11010 26 Z SUB Substitute 1B 33 11011 27 5 34 11100 28 AN FS File Separator ID 35 11101 29 GS Group Separator 1E 36 11110 30 A RS Record Separator IF 37 11111 31 US Unit Separator 304823 A Rev 01 LCe 4 Integrated Headend Controller Installation Manual Response Structure The response structure consists of a sequence of ASCII characters terminated by a carriage return Responses will be in one of the two following general formats lt start gt ADD lt sp gt R lt sp gt RC lt sp gt CRC lt cr gt or lt start gt ADD lt sp gt R lt sp gt RC lt sp gt PARM lt sp gt CRC lt cr gt There will be one response returned for all commands ADD Address three characters The address of the unit that is responding to the command R ASCII R character one character Indicates that this is a response to a previous message RC Response Code three characters OK Command Accepted ERR Command Denied because of Syntax Error CRC Command Denied because of CRC 16 error Note For non concatenated commands a response code of ERR indicates that the command failed before the unit s settings were changed For concatenated co
34. LUDING WITHOUT LIMITATION ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE Licensee is responsible for the security of its own data and information and for maintaining adequate procedures apart from the Software to reconstruct lost or altered files data or programs 4 Limitation of liability IN NO EVENT WILL BAY NETWORKS OR ITS LICENSORS BE LIABLE FOR ANY COST OF SUBSTITUTE PROCUREMENT SPECIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES ANY DAMAGES RESULTING FROM INACCURATE OR LOST DATA OR LOSS OF USE OR PROFITS ARISING OUT OF OR IN CONNECTION WITH THE PERFORMANCE OF THE SOFTWARE EVEN IF BAY NETWORKS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES IN NO EVENT SHALL THE LIABILITY OF BAY NETWORKS RELATING TO THE SOFTWARE OR THIS AGREEMENT EXCEED THE PRICE PAID TO BAY NETWORKS FOR THE SOFTWARE LICENSE 5 Government Licensees This provision applies to all Software and documentation acquired directly or indirectly by or on behalf of the United States Government The Software and documentation are commercial products licensed on the open market at market prices and were developed entirely at private expense and without the use of any U S Government funds The license to the U S Government is granted only with restricted rights and use duplication or disclosure by the U S Government is subject to the restrictions set forth in subparagraph c 1 of the Commercial Computer Software Restricted Rights clause of FAR
35. Response Enable Local Control Description Command Code Parameters Response Sets the RF attenuation for the specified network AR Desired IF output attenuation in dB in the form XX XX Leading zeros are optional but not required The decimal point and two trailing characters are required Valid attenuation values are between 0 dB and 40 dB in 0 25 dB steps Valid trailing characters are 00 25 50 or 75 OK or ERR or CRC Turns on the RF output to the specified network OE None OK or ERR or CRC Turns off the RF output to the specified network OD None OK or ERR or CRC Enables local control of the Frequency Translator The network 15 irrelevant and can be either or B This command cannot concatenated LE None OK or ERR or CRC 4 16 304823 A Rev 01 Console Port Interface Disable Local Control Description Command Code Parameters Response Status Unit Request Description Command Code Parameters Response Disables local control of the Frequency Translator The network is irrelevant and can be either or B This command cannot concatenated LD None OK or ERR or CRC The Status Unit Request command returns the factory model and revision history for the unit at the time of shipping The detailed contents of the reply are shown in the response section The network is irrelevant and be either or B This command cannot concatenated
36. access point Remote control access Translator remote control Two 9 pin D Sub data loop input and daisy chain output connectors AC Power Receptacle Power input Single phase power with grounded neutral conductor 2 4 304823 A Rev 01 System Installation Rack Installation The LCe should be supported at the rear of the unit The Rear Rack Mount Support Kit is provided for this purpose Perform the following procedure to install LCe in a rack 1 Referring to Figure 2 1 measure the distance between outer surfaces of front and rear mounting rails in the 19 rack 2 Install Rear Support Plates to both sides of the LCe so that dimension A equals the distance measured in step 1 minus 1 29 inches 3 Orient the plates so that the captive nuts are on the outside Use the two 6 32 x 3 8 screws that are provided If necessary install clip nuts on front and rear mounting rails where the LCe will be positioned 4 Install the LCe in the rack Support unit and align holes in front mounting ears with holes in the front mounting rail Secure with four 10 32 x 4 Truss Head screws and nylon washers that are provided 5 Align Rear Support Bracket with captive nuts in Rear Support Plate and holes in rear mounting rail Secure to rear mounting rail with four 10 32 x 34 Truss Head screws that are provided Secure to Rear Support Plate with four 6 32 x 3 8 screws that are provided 6 Remove the LCe Contro
37. am band edge to band edge in 250 KHz increments The LCe allows configuration of modem frequencies through the easy to use front panel control or the serial port connection which enables remote configuration using a telephone modem Refer to Chapter 4 Console Port Interface for more information on the LCe s serial connection Data channels can be moved in frequency allowing a dynamic management of spectrum 304823 A Rev 01 1 3 LCe 4 Integrated Headend Controller Installation Manual LCe 4 Dual Headend Reference Cable Modems The headend reference cable modem section of the LCe provides references for Nortel Networks LANcity Cable Data Modems CDM s The reference nodes receive Nortel Networks LANcity cable TV network operational parameters including the upstream and downstream frequencies from the Nortel Networks LANcity Provisioning Server LCn The reference cable modems broadcast these parameters periodically on each of their specific downstream channels so Nortel Networks LANcity CDMs LCP LCb and LCw on those specific networks can receive them Each CDM can then use those network parameters to contact the LCn for its definitive operational parameters Headend Reference Cable Modem Functions The reference nodes provide the following functions Dynamically allocate data bandwidth Transmit periodic reference packets allowing CDMs to equalize dynamically for downstream cable plant characteristics such as group delay
38. ansferable license a to use the Software either on a single computer or if applicable on a single authorized device identified by host ID for which it was originally acquired b to copy the Software solely for backup purposes in support of authorized use of the Software and c to use and copy the associated user manual solely in support of authorized use of the Software by Licensee This license applies to the Software only and does not extend to Bay Networks Agent software or other Bay Networks software products Bay Networks Agent software or other Bay Networks software products are licensed for use under the terms of the applicable Bay Networks Inc Software License Agreement that accompanies such software and upon payment by the end user of the applicable license fees for such software iv 304823 A Rev 01 LCe 4 Integrated Headend Controller Installation Manual 2 Restrictions on use reservation of rights The Software and user manuals are protected under copyright laws Bay Networks and or its licensors retain all title and ownership in both the Software and user manuals including any revisions made by Bay Networks or its licensors The copyright notice must be reproduced and included with any copy of any portion of the Software or user manuals Licensee may not modify translate decompile disassemble use for any competitive analysis reverse engineer distribute or create derivative works from the Software or user manuals or any copy
39. d trademarks are the property of their respective owners Restricted Rights Legend Use duplication or disclosure by the United States Government is subject to restrictions as set forth in subparagraph c 1 ii of the Rights in Technical Data and Computer Software clause at DFARS 252 227 7013 Notwithstanding any other license agreement that may pertain to or accompany the delivery of this computer software the rights of the United States Government regarding its use reproduction and disclosure are as set forth in the Commercial Computer Software Restricted Rights clause at FAR 52 227 19 Statement of Conditions In the interest of improving internal design operational function and or reliability Bay Networks Inc reserves the right to make changes to the products described in this document without notice Bay Networks Inc does not assume any liability that may occur due to the use or application of the product s or circuit layout s described herein Portions of the code in this software product may be Copyright O 1988 Regents of the University of California All rights reserved Redistribution and use in source and binary forms of such portions are permitted provided that the above copyright notice and this paragraph are duplicated in all such forms and that any documentation advertising materials and other materials related to such distribution and use acknowledge that such portions of the software were developed by the Univer
40. de becomes the hexadecimal sum of the failure codes Examples Bits 0 4 and 5 fail the four bit code is 0031 e Bits O 1 2 3 and 10 fail the four bit code is 040 Bits 4 5 8 9 and 10 fail the four bit code 15 0730 304823 A Rev 01 Introduction Specifications Installation and Operating Environment Rack mount Dimensions 17 25 x 15 75 x 3 5 Weight 24 Ibs Operating Temperature 0 to 40 degrees C Storage Temperature 40 to 66 degrees C Humidity 20 to 80 non condensing Voltage 88 to 260 Volts 47 to 63 Hz Input Power 70 watts max 110 volts 85 watts max 220 volts Ethernet connectivity AUI Performance e Filtering rate 14 000 pkts sec Forwarding rate 13 000 pkts sec e Distance features Round trip delays to 1 25 msec Typical coax up to 200 miles Typical fiber up to 160 miles Modulation Specifications Data Rate 10 Mbps transmit and receive Modulation Quadrature Phase Shift Keying QPSK Spectral Efficiency 1 67 bits Hz Regulatory Specifications Safety UL 1950 CSA 22 2 950 EN60950 Emissions FCC Class EU Class EN61000 3 2 EN61000 3 3 Immunity 50082 1 EN55024 304823 A Rev 01 1 7 LCe 4 Integrated Headend Controller Installation Manual RF Electrical Specifications Displayed RF Out power measurement accuracy 4 dB over operating range with a 75 Ohm load on the output port
41. defects in materials and workmanship under normal use for a period of 90 days from the date Software is first shipped to Licensee Bay Networks will replace defective media at no charge if it is returned to Bay Networks during the warranty period along with proof of the date of shipment This warranty does not apply if the media has been damaged as a result of accident misuse or abuse The Licensee assumes all responsibility for selection of the Software to achieve Licensee s intended results and for the installation use and results obtained from the Software Bay Networks does not warrant a that the functions contained in the software will meet the Licensee s requirements b that the Software will operate in the hardware or software combinations that the Licensee may select c that the operation of the Software will be uninterrupted or error free or d that all defects in the operation of the Software will be corrected Bay Networks is not obligated to remedy any Software defect that cannot be reproduced with the latest Software release These warranties do not apply to the Software if it has been 1 altered except by Bay Networks or in accordance with its instructions ii used in conjunction with another vendor s product resulting in the defect or iii damaged by improper environment abuse misuse accident or negligence THE FOREGOING WARRANTIES AND LIMITATIONS ARE EXCLUSIVE REMEDIES AND AREIN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INC
42. e Switched Multimegabit Data Service Simple Network Management Protocol Spanning Tree Protocol Shielded Twisted Pair Transmission Control Protocol Internet Protocol Telecommunication Network Trivial File Transfer Protocol Maximum Rated Ambient Temperature Twisted Pair Ethernet Transmit Unshielded Twisted Pair Wide Area Network Nortel Networks Technical Publications You can now print technical manuals and release notes free directly from the Internet Go to support baynetworks com library tpubs Find the Nortel Networks products for which you need documentation Then locate the specific category and model or version for your hardware or software product Using Adobe Acrobat Reader you can open the manuals and release notes search for the sections you need and print them on most standard printers You can download Acrobat Reader free from the Adobe Systems Web site www adobe com Xiv 304823 A Rev 01 About This Document Documentation sets and CDs are available through your local Nortel Networks sales office or account representative Nortel Networks Customer Service You can purchase a support contract from your Nortel Networks distributor or authorized reseller or directly from Nortel Networks Services For information about or to purchase a Nortel Networks service contract either call your local Nortel Networks field sales office or one of the following numbers Region Telephone number Fax number
43. e CRC is tagged on to the end of the message with the least significant byte first For the received message After all the received message bytes have been processed the resulting CRC should be zero If it is not zero at least one bit error has occurred If it is Zero it is assumed that no errors have occurred In the following table the transmitted message is shown in the first column The second column shows the value labeled as X in the algorithm The third column shows the table value obtained from the lookup table using X as an index The final column shows the computed CRC at each step of the calculation The first row shows the values before beginning the calculation while the last two rows add the final computed CRC onto the transmit message 304823 A Rev 01 4 19 LCe 4 Integrated Headend Controller Installation Manual TX DATA BYTE XTERM TABLEVALUE TX CRC 0 0 0 86 86 281 281 22 7940 79 2 17 F5 47 0 47 9 2D 94 AF01 AF46 9C DA 9B81 9B2E BD 93 6D40 6DDB 7B 0 7800 7860 9C Fl 84C1 84B9 70 C9 56 0 5644 6E 2A DF81 DFD7 FF 28 1 00 IEDF 59 86 A281 A29F EB 74 2700 27A2 45 E7 4A40 4A67 8 6F 2 40 2C0A 38 32 D581 D5AD 60 CD 95 9514 END OF TX MSG 14 lt CRC LOW BYTE 95 lt CRC HIGH p m BYTE In the following table the received message is shown in first column The second column shows
44. efore You Begin You should be familiar with cable TV systems Many of the operations described by this guide could disrupt the entire cable TV system if performed improperly This guide assumes you are familiar with the LCe 4 System s architecture and its technical terms such as Pacer max loop delay etc If you are not familiar with these terms refer to the Nortel Networks Broadband Technology Division Training Manual You must have the permission and authorization of the cable TV system operator before you begin the installation Installation Tools and Equipment Required When installing the LCe on a cable TV network a portion of the installation process involves testing the cable s forward and return frequency signal levels These tests are in preparation for installing the LCPs and LCbs The following sections describe the required tools and test equipment and their uses 304823 A Rev 01 14 LCe 4 Integrated Headend Controller Installation Manual Tools You May Need There are no special tools required to install the LCe The tool kit should include 7 16 inch open end wrench Phillips screwdriver Installation and Verification Equipment You Need The following equipment is required during initial system set up and installation CW signal generator 15 required during initial system set up and installation This device is used to inject a RF carrier signal on the provided reverse channel of the cable TV network Th
45. el Output Level For the initial installation of the LCe the LCn must be connected locally to each Ethernet port of the headend Reference Nodes Thereafter the LCn may be left connected or connected remotely via an LCP LCw or an LCb Configure the LCn for the LCe s Headend Reference Cable Modems operating channel frequencies and other configuration parameters Power up the LCe with the LCn connected via the Ethernet ports Using the front panel controls set the LCe s input and output frequencies for both the A and B Networks Refer to the Operating Controls Section Monitor the front panel LEDs Cable TV Sync for the Block Sync achieved indication With Block Sync achieved the forward channel Network A and B outputs will be active This allows the output level to be set using the LCe s front panel display and controls or using the LCe Remote User Interface without having an input signal at the Network A or B inputs Before setting the output level set the IF level using the front panel LCD value Set the IF level to 37 dBmV 0 4 dB When using the front panel LCD to set the output level the forward channel output must be terminated into 75 Ohms The output can be set by selecting the RF Level Adjust Mode or by using external padding The RF Level Adjust Mode has an operational range of 16 dB Note Do not adjust the output to be lower than 42 dBmV If levels below 42 dBmV are required use external attenuation
46. el less than 37 dBmV will degrade noise performance and a level above 37 dBmV will promote intermodulation products To set the IF level use the mouse cursor and click on the entry field s pulldown arrow The IF level can now be adjusted to 37 dBmV by using the mouse cursor to select an appropriate attenuation number While in this mode the approximate IF output level will be displayed in the IF Level display box 4 8 304823 A Rev 01 Console Port Interface IF Level The IF Level indicates the currently measured Intermediate Frequency power See IF Adj above Fout After connecting the Network A Configuration Fout pulldown entry field will read e XXX XX MHz e where XXX XX is the currently stored output frequency The displayed frequency corresponds to the frequency at the center of the band 1 e VHF channel 80 558 00 564 00 MHz 2561 00 MHz To adjust the output frequency use the mouse cursor and click on the entry field s pulldown arrow Click on the desired center frequency During frequency change the output is muted for five seconds to avoid undesirable interference Modified frequencies are implemented as soon as the frequency is selected RF Adj The maximum recommended output is 58 dBmV the minimum allowed output is 42 dBmV The output is as measured not as displayed on the local LCD or the remote user interface After connecting the Network A Configuration RF Adj pulldown entr
47. em Responses 4 15 sut derne a d DURER 4 15 Ser OPU Sana eT 4 15 ME EDU EUM 4 15 Sel RF e Re pev bb ER vbt E ORE 4 16 zinc RF lp T 4 16 Diane RF E ER 4 16 T T 4 16 MR 4 17 eris Lo PISOS ul L e POE 4 17 Statue Ce TIA BEES iu uoces iaa ayasa a stad dn cua 4 18 304823 A Rev 01 ix LCe 4 Integrated Headend Controller Installation Manual DL GS ONS bb Od es dat 4 19 l uuu TU 4 19 Eou om a E Er 4 21 cd eigo cx CP TN UNE 4 24 Appendix arcu nier ET A 1 debe LCS PN c A 5 304823 A Rev 01 About This Document The LCe 4 Integrated Headend Controller Installation Manual describes how to Install the LCe 4 for operation on your HFC systems Select return channel attenuation Adjust the LCe s output Read the LCe s control panel Setthe LCe s transmit and receive frequencies Monitor the output of the LCe s signal to the forward combiner The LCe 4 Integrated Headend Controller Installation Manual provides the LCe s major specifications instructions for setting up the integrated cable TV single channel translators and verifying the LCe
48. ernational Internal thermal monitoring to detect a thermal overload Does not have thermal monitoring If thermal monitor exceeds 90 degrees Celsius it sets an alarm and reports an error to the four digit error code Australian emission and safety conformance Japanese VCCI approval Does not have these approvals and will not These approvals are currently being sought Reverse channel operating range 5 0 MHz to 42 MHz band edge to band edge 8 75 to 42 band edge to band edge Note Range has been reduced Forward channel operating range 54 to 750 MHz band edge to band edge 88 to 750 MHz band edge to band edg Note Range has been reduced A 6 304823 A Rev 01 LCE 4 Integrated Headend Controller Installation Manual READER S COMMENTS What do you think of this document Your comments and suggestions will help us to improve the quality and usefulness of our publications Please rate this document Poor Excellent Accuracy 1 2 3 4 5 Readability 1 2 3 4 5 Examples 1 2 3 4 5 Organization 1 2 3 4 5 Completeness 1 2 3 4 5 Did you find errors in this document If so please specify error s and page number s General comments Suggestions for improvement Name Date Title Department Company Street City State Country Zip code
49. first character is an ASCII V followed by the low and high bytes respectively of the computed CRC 16 checksum the checksum characters are not necessarily ASCIT The checksum is to be computed on all characters after the initial start character up to and including the first V character in the section If the checksum is not used the three characters should be ASCII NNN These characters MUST be uppercase PARM is one or more characters and is command specific start ASCII Asterisk character sp ASCII Space character cr ASCII Carriage Return character M 4 12 304823 A Rev 01 Console Port Interface ASCII Control Character Set Hex Oct Binary Dec Key Symbol Meaning 0 0 0 0 NUL NULL 1 1 1 SOH Start Heading 2 2 10 2 B STX Start Text 3 3 11 3 C ETX End Text 4 4 100 4 D EQT End of Transmission 5 5 101 5 AE ENQ Enquiry 6 6 110 6 F ACK Acknowledge 7 7 111 7 AG BEL Bell 8 10 1000 8 BS Backspace 9 11 1001 9 AJ HT Horizontal Tab 12 1010 10 J LF Newline Linefeed OB 13 1011 11 K VT Vertical Tab 0C 14 1100 12 L FF Form Feed OD 15 1101 13 M CR Carriage Return OE 16 1110 14 AN SO Shift Out 17 1111 15 O SI Shift In 10 20 10000 16 DLE Data Link Escape 11 21 10001 17 Q DCI Device Control 1 12 22 10010 18 R DC2 Device Control 2 13 23 10011 19 S
50. h the Nortel Networks Data Over Cable Division Provisioning Server LCn User Guide describes how to install and config ure the Integrated Headend Controller LCe 4 This manual is intended for the hardware installer and the network manager Suppression Update Information This is a new manual Revision 01 304823 A March 1999 NORTEL NETWORKS Bay Networks Inc 8 Federal Street Billerica MA 01821 Copyright 1998 Bay Networks Inc All rights reserved Printed in the USA Test Date The information in this document is subject to change without notice The statements configurations technical data and recommendations in this document are believed to be accurate and reliable but are presented without express or implied warranty Users must take full responsibility for their applications of any products specified in this document The information in this document is proprietary to Bay Networks Inc The software described in this document is furnished under a license agreement and may only be used in accordance with the terms of that license A summary of the Software License is included in this document Trademarks Microsoft Microsoft Access MS DOS Windows 95 and Windows NT are registered trademarks of Microsoft Corporation Bay Networks and Optivity are registered trademarks and the Bay Networks logo LANcity Personal and Where Information Flows are trademarks of Bay Networks Inc All other trademarks and registere
51. hain Cabling Example 304823 A Rev 01 4 3 LCe 4 Integrated Headend Controller Installation Manual LCe 4 Headend Controller User Interface You use PC based LCe 4 Headend Controller software to access the LCe remotely Refer to the following sections for descriptions on how to verify and modify the LCe s frequency translator s parameters Installing The LCe 4 User Interface on a PC Install the two disk LCe 4 User Interface software on a PC that you will use to connect directly to the LCe via null modem cable or on a PC that you connect remotely to the LCe via dial up modem When you install the LCe User Interface on a PC running Windows 95 you will view dialogue boxes as shown in Figure 4 4 jm the name of a program folder or document and gt Windows will open it for you Open Setup exe i Cancel Browse Welcome to the LCeEA 3 Headend Controller Interface installation E program Setup cannot install system files or update shared files if they are in use Before proceeding we recommend that you close any applications you may be running Exit Setup Begin installation clicking the button below Click this button to install LCeEA 3 Headend Controller Interface software the specified destination directory Directory Change Directory Exit Setup LCeEA 3 Headend Controller Interface Setup was cornpleted
52. hat requires large current drains AN Caution Circuit Overloading Consideration should be given to the connection of to the supply circuit and the effect that overloading of circuits might have on overcurrent protection and supply wiring Appropriate consideration of the LCe s nameplate ratings should be used when addressing this concern Warning To reduce the risk of electric shock always plug the Nortel Networks Integrated Headend Controller power cord into a grounded Power outlet Power outlet ground must be permanently connected to the power service earth ground 304823 A Rev 01 2 3 LCe 4 Integrated Headend Controller Installation Manual Rear Panel Connections There are nine connectors on the rear panel of the LCe The following Table 2 1 describes their functions and cable requirements Familiarize yourself with each item prior to putting the unit into service Table 2 1 Rear Panel Connections Connector Function Type Translator RF In Return channel input Translator RF Out Forward channel output F Translator B RF In Return channel input F Translator RF Out Forward channel output SES Network A Ethernet Network A s Provisioning 15 Pin D subminiature Server LCn connection and AUI internetworking access point Network B Ethernet Network B s Provisioning 15 Pin D subminiature Server LCn connection and AUI internetworking
53. hoose none one or all of the options Indicates a key that you press For example Press Return or Enter When you see two key names press and hold the first key and then type the second character For example To Press Control C press and hold the Control key and then press the C key Horizontal and vertical ellipsis points indicate omitted information Indicates variable values in command syntax descriptions new terms file and directory names and book titles Indicate the title of a chapter or section within a book Indicates data that appears on the screen Example Set Nortel Networks Trap Monitor Filters Separates menu and option names in instructions and internal pin to pin wire connections Example Protocols AppleTalk identifies the AppleTalk option in the Protocols menu Example Pin 7 19 20 Indicates that you enter only one of the parts of the command The vertical line separates choices Do not type the vertical line when entering the command Example If the command syntax is show at routes nets you enter either show at routes or show at nets but not both Xii 304823 A Rev 01 Acronyms ASIC BootP BRI BS BW CDM CM dB dBc dBm dBmV DCE DES DHCP FSH FTP GUI HDLC HFC HRN IP IRQ ISP Kbps LAN LCb LCD LCe LCh LCn LCP LCT LCw MAC About This Document Applications Specific Integrated Circuit Bootstrap Protocol Basic Rate Interface Bloc
54. is allows the user to measure the input and output signal levels and verify the operating frequency Spectrum analyzer or power meter and tone generator Instruments such as the spectrum analyzer power meter and tone generator may be used to create and measure signals signal levels and operating frequencies Additional Installation Equipment You May Need It is recommended that the following additional installation equipment is within easy access Flash light Power extension cords strips Multimeter Ohm meter volt meter 75 Ohm Attenuators various values 1 e 3 6 10 dB Splitters directional couplers single port multi port various values Coaxial cables various lengths Physical Description The LCe 4 Integrated Headend Controller provides a highly integrated headend solution for the cable operator As subscriber penetrations increase and new data channels are installed headend rack space becomes a precious commodity requiring space efficient equipment In only 3 5 inches of space the LCe integrates all the equipment necessary to support two data channels including frequency translators cable TV to Ethernet bridges data bandwidth allocator and timing frequency amplitude reference see Figure 1 1 304823 A Rev 01 Introduction Bay Networks Headend Controller Network Ethernet TX Power O Cable TV Sync Network B Network B Ethernet TX Power
55. k Sync Bandwidth Cable Data Modem Cable Modem Decibel Decibel Carrier Decibel Milliwatt Decibel Millivolt Data Communications Equipment Data Encryption Standard Dynamic Host Configuration Protocol Field Support History Log File Transfer Protocol Graphical User Interface High Level Data Link Control Hybrid Fiber Coax Headend Reference Node Internet Protocol Interrupt Request Internet Service Provider Kilobytes per Second Local Area Network LANcity Multiple User Cable Modem Liquid Crystal Display LANcity Integrated Headend Controller LANcity Headend Equalization Node Provisioning Server LANcity Personal Cable Modem LANcity Transmaster Frequency Translator LANcity Work Group Bridge Media Access Control 304823 A Rev 01 xiii LCe 4 Integrated Headend Controller Installation Manual MAU Mbps MIB MSO MTBF MTD NIC NMS NVRAM OSI OSPF PPP QPSK RDBMS RF RMA RX SMDS SNMP STP TCP IP Telnet TX UTP WAN Media Access Unit Megabytes Per Second Management Information Base Multiple System Operator Mean Time Between Failures Max Transit Delay Network Interface Card Network Management System Non Volatile Random Access Memory Open Systems Interconnection Open Shortest Path First Protocol Point to Point Protocol Quadrature Phase Shift Keying Relational Database Management System Radio Frequency Return Merchandise Authorization Receiv
56. ld you have any questions concerning this Agreement contact Bay Networks Inc 4401 Great America Parkway P O Box 58185 Santa Clara California 95054 8185 LICENSEE ACKNOWLEDGES THAT LICENSEE HAS READ THIS AGREEMENT UNDERSTANDS IT AND AGREES TO BE BOUND BY ITS TERMS AND CONDITIONS LICENSEE FURTHER AGREES THAT THIS AGREEMENT IS THE ENTIRE AND EXCLUSIVE AGREEMENT BETWEEN BAY NETWORKS AND LICENSEE WHICH SUPERSEDES ALL PRIOR ORAL AND WRITTEN AGREEMENTS AND COMMUNICATIONS BETWEEN THE PARTIES PERTAINING TO THE SUBJECT MATTER OF THIS AGREEMENT NO DIFFERENT OR ADDITIONAL TERMS WILL BE ENFORCEABLE AGAINST BAY NETWORKS UNLESS BAY NETWORKS GIVES ITS EXPRESS WRITTEN CONSENT INCLUDING AN EXPRESS WAIVER OF THE TERMS OF THIS AGREEMENT vi 304823 A Rev 01 Table of Contents About This Document Conventions Used in This Guide xii ii NE DU USE xiii Nortel Networks Technical Publications eie e aeter abc tsi PR xiv Nortel Networks Customer Lu tas ddnde bordi dedu adn pend ae XV Howto Ger ede XV Lu S sala uuu 722224 SiS xvi f HM xvi Placement of the Integrated Headend Controller xvii Foner o UL o xvii The Integrated Headend Controller xviii
57. ller Access Cover from LCe to gain access to LCe functions Replace cover when setup is complete to prevent accidental changing of settings Rear Support 6 32x3 8 Nylon 10 32 x 3 4 N N Screw x4 Washer Truss Head E Screw 4 P d cM P we Nylon x EL c Washer 4 7 10 32 x 3 4 x4 captive Truss Head nuts Screw x4 6 32 x 3 8 Screw 4 BES k d 2 Rear Support Plate Figure 2 1 LCe 4 Rear Rack Mount Support View 304823 A Rev 01 2 5 LCe 4 Integrated Headend Controller Installation Manual 2 6 304823 A Rev 01 Chapter 3 Operator Instructions This chapter describes the LCe 4 s operator instructions and provides a detailed description of setting up the LCe Setting LCe s Reverse Channel Input Level The reverse channel input is automatically set by the LCe internal headend reference nodes to be 1 dBmV 2 dB The remote nodes auto adjust their transmitters for the reverse path attenuation to match the level of the internal headend reference node transmitter level at the input of the Translator Optimization of the remote nodes auto adjustment is done by installing appropriate attenuation to the reverse channel inputs for both A and B Networks at the LCe Selecting the Reverse Channel Attenuation The designed output level of the last active device of the network must be known If fiber connects the last amplifie
58. mmands a response code of ERR indicates that the command failed during processing The unit s settings may have been partially modified depending upon which subcommand generated the error For example assume a three part concatenated command is sent to the unit If the second part generates an error the first part will have been processed correctly and the unit settings would reflect this The second part failed so the unit settings will not have been modified The third part will have been discarded so the unit settings will again not be modified CRC CRC 16 checksum 3 characters The response checksum is always valid The first character will be an ASCII V followed by the low and high bytes respectively of the computed CRC 16 checksum the checksum characters are not necessarily ASCII The checksum will be computed on all characters after the initial lt start gt character up to and including the first V character in the CRC section PARM one or more characters and is command specific lt start gt ASCII Asterisk character lt sp gt ASCII Space character lt cr gt ASCII Carriage Return character 4 14 304823 A Rev 01 Console Port Interface Command Descriptions and System Responses This section defines each of the command codes and the associated parameters Set Input Frequency Description Command Code Parameters Response Set Output Frequency Description Command Code
59. nal couplers or two way splitters directly at the Network A and B outputs All unused ports should always be terminated The IN port of the directional coupler should be connected to the RF output of the LCe Use the tap port of the directional coupler as the test point Connect the output port of the directional coupler to the forward channel coaxial cable To minimize the throughput loss a 20 dB or higher directional coupler is recommended If the throughput loss is not a problem a two way splitter can be used to provide the RF output test point Note When reading the power value on the LCD the RF output must be terminated with a 75 Ohm terminator or into a 75 Ohm system The output will drop out approximately every two minutes when there are no cable modems connected to the system Note A signal level meter SLM Spectrum Analyzer or power meter cannot be used to measure an active data channel accurately unless the instrument is specifically designed to measure a periodic QPSK signal through vendor specific options Contact your instrument vendor for information on calibration factors needed to obtain an accurate measurement 3 6 304823 A Rev 01 Operator Instructions Measuring the LCe QPSK Output Signal To measure the QPSK signal at the output of the Headend controller the following methods are recommended 1 Power Meter recommend HP437B meter 8482 Power Sensor and HP11852B min loss pad Caution The
60. nd 19200 option buttons to select the baud rate of the PC serial port that you will use to connect to a dial up modem to connect the PC to the LCe Local Connect Use the Local Connect button to initiate the connection if connected via direct cable connection Upon successful connection the Local Connect button becomes the Disconnect button Use the Disconnect button to release the PC s communications port connecting the PC to the LCe via a direct connect cable Phone Number Use the Phone Number field to enter the phone number of a dial up modem that you will use to connect the PC to the LCe The Local Connect button becomes a Remote Connect button upon entering a phone number Upon successful connection the Remote Connect Button becomes the Disconnect button Use the Disconnect button to release the PC s communications port connecting the PC to the LCe via a dial up modem Local and remote telephone modem requirements Both must be Hayes compatible Remote modem modem connected to LCe must be set up to power up in auto answer mode and set to answer on one ring Remote modem interface rate should be set up to follow connection rate Connection speed after pressing connect button Local Connect approximately 3 seconds Remote Connect approximately 25 seconds 4 6 304823 A Rev 01 Console Port Interface Status Use the Status button to refresh and update the LCe 4 User Interface screen Unit Co
61. nfiguration Address The Unit Configuration area provides entry space via a pull down menu for the LCe s three digit decimal address This area also provides an entry box to check off whether or not the LCe is enabled for local control In addition the Unit Configuration area displays error codes and the current temperature Use the Address pulldown to select a specific identifier when your is connected to more that one LCe in the daisy chain configuration as discussed in the LCe Daisy Chain Configuration section The range of allowed addresses is from 001 to 999 units are shipped from the factory with address 999 pre selected Local Control Enabled Error Code Temperature You can use the Local Control Enabled option box to lock out the LCe s front panel control buttons When the LCe 4 User Interface is connected to an LCe and the Local Control Enabled box is not checked the LCe s front panel buttons are disabled Table 1 1 LCe 4 Translator Error Message Table in Chapter 1 provides brief descriptions of the Error Code messages The Temperature display box provides the current sampled temperature in Celsius for the addressed LCe An error code is initiated to the 4 digit error value if the temperature exceeds 90 Celsius 304823 A Rev 01 4 7 LCe 4 Integrated Headend Controller Installation Manual Network A Configuration Fin IF Adj This area of the LCe 4 User Interface screen provides the pulldo
62. ng the UP DOWN arrow buttons The range of allowed addresses is from 001 to 999 units are shipped from the factory with address 999 pre selected 304823 A Rev 01 3441 LCe 4 Integrated Headend Controller Installation Manual 304823 A Rev 01 4 Console Port Interface This chapter describes the LCe 4 s console port interface for remote management Operation The frequency translator may be controlled via the RS 232 Remote Interface connector The connector has two sockets The top socket is used for input and the bottom socket is for use in a daisy chain configuration Up to 10 units may be daisy chained and controlled at one time from a single serial port Connecting the input connector on the first unit to a computer terminal configures a daisy chain The input connector on the second unit should be connected to the daisy chain connector on the first unit Each successive unit in the chain should be connected similarly The input data rate can be 9600 or 19200 bps The frequency translator will automatically determine which data rate is in use and adjust accordingly There are no user settings relating to baud rate selection Remote Connector Cabling Figure 4 1 shows the pinout for a 9 pin to 9 pin cable used to connect the LCe s Remote Connector to a PC This cable is also used to daisy chain LCe s Refer to the LCe Daisy Chain Configuration section for more information Figure 4 2 shows the pi
63. nout for a 9 pin to 9 pin cable used to connect the LCe s Remote Connector to a telephone modem 304823 A Rev 01 4 1 LCe 4 Integrated Headend Controller Installation Manual DCE DCE i wo 00 10 AU N U Nme DCD Data Carrier Detect RD Receive Data TD Transmit Data DTR Data Terminal Ready SG Signal Ground DSR Data Set Ready RTS Request to Send CTS Clear to Send RI Ring Indicator A Figure 4 1 DB9 F F Null ModemCable Pinout SANA Q UC SrNIA MB WN Figure 4 2 LCe 4 DB9 Serial Modem Cable Pinout 4 2 304823 A Rev 01 Console Port Interface LCe 4 Daisy Chain Configuration The bottom serial port connector is the daisy chain connector It is used to connect to the input of another LCe The LCe s can be daisy chained up to a total of ten units Figure 4 1 shows the pinouts of the LCe s 9 pin serial ports Figure 4 3 is an example of the LCe daisy chain cabling Refer to Chapter 3 Operating Control s Remote Address section for information on using the LCe s front panel switches to assign unit configuration addresses Refer to the LCe 4 Headend Controller User Interface s Remote Address section in this chapter for information on using the LCe s PC user interface application to assign unit configuration addresses Remote Terminal Figure 4 3 4 Daisy C
64. nspection by the carrier s agent Taking Inventory Check the packing slip to verify you have everything you ordered The unit s shipping box contains the following Mounting LCe and its power cord One copy of the document LCe 4 Integrated Headend Controller Installation Manual LCe Rear Rack Support Kit LCeEA 4 Headend Controller User Interface Software Disk Rack Requirements The Nortel Networks Integrated Headend Controller is designed to be mounted in a standard 19 rack compliant with EIA RS 310 304823 A Rev 01 2 1 LCe 4 Integrated Headend Controller Installation Manual Caution The 19 rack suitable for Nortel Networks Integrated Headend Controller installation must support a minimum of 25 pounds Do not mount Nortel Networks Integrated Headend Controller in any manner that could cause a hazardous condition due to uneven mechanical loading Cooling Requirements The LCe is designed for standard rack mounting in a 19 equipment rack It requires 3 5 inches of vertical rack space It should be installed in a rack allowing some access to the back of the unit The LCe should be free of strong RF radiation emanating from local equipment in the rack Power line transients that may cause damage to the unit should be avoided It should be installed in a location with adequate ventilation It is designed to operate at temperatures ranging from 5 C to 40 As with all electrical equipment ope
65. ntegrated Headend Controller near a radiator or heat register Power Cord Connection A A Warning The Integrated Headend Controller is shipped with a grounding type 3 wire power cord To reduce the risk of shock always plug the cord into a grounded power outlet Warning The Integrated Headend Controller is designed to work with single phase power systems having a grounded neutral conductor To reduce the risk of electrical shock do not plug the Integrated Headend Controller into any other type of power system Contact your facilities manager or certified electrician if you are not sure what type of power is supplied to your building Note The LCeEA xx must be operated with the supplied line cord or with a line cord meeting IEC227 H03 VV F or IEC227 H03 VVH2 F having conductors with a cross sectional area not less than 75 mm 304823 A Rev 01 xvii LCe 4 Integrated Headend Controller Installation Manual The Integrated Headend Controller Cover A Warning It is not safe to operate the Integrated dend Controller without the cover in place Failure to take this precaution may result in personal injury and system damage xviii 304823 A Rev 01 Chapter 1 Introduction This manual explains how to install an LCe 4 Integrated Headend Controller This chapter describes the LCe s physical characteristics and specifications Chapter 1 also provides a list of required tools and materials B
66. played conditions are as follows Be indicates that the RF output for Network B is enabled Bm indicates that the RF output for Network B is muted e Bd indicates that the RF output for Network is disabled The next three characters indicate the local control status The possible displayed conditions are as follows e L R indicates that both local and remote control is enabled e R indicates that only remote control is enabled The final four characters refer to the error status of the Frequency Translator The displayed characters correspond to a 16 bit hexadecimal error code Each bit in the error code corresponds to a specific error condition The bit definitions for the error code are shown in Table 1 1 Table 1 1 LCe 4 Translator Error Message Table Bit 0 LSB 0001 Unit A DownConverter Variable LO Unlocked Bit 1 0002 Unit DownConverter Fixed LO Unlocked Bit 2 0004 Unit A UpConverter Variable LO Unlocked Bit 3 0008 Unit A UpConverter Fixed LO Unlocked Bit 4 0010 Unit B DownConverter Variable LO Unlocked Bit 5 0020 Unit B DownConverter Fixed LO Unlocked Bit 6 0040 Unit B UpConverter Variable LO Unlocked Bit 7 0080 Unit B UpConverter Fixed LO Unlocked Bit 8 0100 30 Volt Supply too low Bit 9 0200 10 Volt Supply too low Bit 10 0400 5 Volt Supply too low Bit 11 0800 Temperature Sensor above 90 degrees Celsius If there are multiple error conditions the four bit co
67. power meter power sensor is sensitive to shock and precautions should be taken to protect the sensor from shock The minimum loss pad converts from 50 Ohms to 75 Ohms and a type N female to type F female adapter is required to allow connection to a coaxial cable This method can only be done at the headend in a stand alone state with block synchronization achieved The time on and time off variables are random values when the network is operational and so this method can not be used to measure the power on an operational network The accuracy of this measurement is as good as the sensor accuracy but should be within 1 dB Headend Controller has block sync and is not attached to network It is in a stand alone state Set the IF level to 37 dBmV 0 4 dB with the LCe front panel controls or remote interface e Attach a Calibrated Power Meter Sensor Min Loss Pad to the Forward Channel Output following formula shows how the correction factor has been calculated 10log ton ton tore min loss pad value Correction Factor ton 387 us Synchronization signaling on period tore 31 254 ms Synchronization signaling off period 10log 387 us 387 31254 us 19 12 absolute value The value of the minimum loss pad is added to the Correction Factor 19 12 5 7 dB 24 82 dB Correction Factor for average power 304823 A Rev 01 3 7 LCe 4 Integrated Headend Controller Installation
68. r you have to know the designed output level of the Fiber Receiver node at the headend The designed input level to the first active device of the reverse channel is a prerequisite to knowing the designed output level of the last active device 1 Locate the reverse combiner It is selected for connecting to the input of Network A or B labeled Reverse at the connector of the LCe 2 Record the loss for that combiner and any other loss between the combiner and the last amplifier driving the input of the combiner 3 Subtract the loss in step 2 from the designed output level It is the level as predicted at that output with the required input to the trunk amplifiers 304823 A Rev 01 3 1 LCe 4 Integrated Headend Controller Installation Manual Example 30 dBmV Designed last active device output level 7 dBCombiner Loss 23 dBmV Select Reverse Channel Pad to provide optimum LCP signal to first active amplifier The Output Level of the combiner is used as the starting point 4 Example 23 dBmV Level to be padded for LCT input minus 1 dBmV Desired input level to LCT input 22 dB Reverse Channel Pad The automatic power adjust causes all transmitters to hit the input of the RF to Fiber Transceiver or the first active amplifier at the same level The automatic power adjustment range is 27 dB The attenuation for the reverse upstream path at the headend determines the value of the signal level at the input to the
69. ration at excessive temperature accelerates the deterioration of components and adversely affects performance For this reason measures should be taken to prevent the buildup of excessive heat in the rack Precautions should include Full rack space between every unit Forced ventilation in an enclosed rack Caution The LCe has vents on the front panel for air intake The LCe also has a fan on the back panel When you install the LCe in a rack make sure objects do not block the vents on the front panel or the fan on the back the operating ambient temperature of the rack environment may be greater than room ambient Therefore consideration should be given to installing the LCe in an environment compatible with the maximum rated ambient temperature Tmra as specified in the Specifications section in Chapter 1 1 If the LCe is installed in a closed or multi unit rack assembly Installation of the equipment in a rack should be such that the amount of air flow required for safe operation of the equipment is not compromised 2 2 304823 A Rev 01 System Installation Power Requirements The equipment has an international auto ranging internal power supply which allows it to be powered from any 100 120 220 240 VAC 50 60 Hz source Note the total current consumption of all equipment on the same line before applying power to the LCe Avoid sharing an AC source which feeds heavy motors or other equipment t
70. rd Combiner Combiner Figure 3 1 Selecting the Reverse Channel Pad Selecting Reverse Attenuation When Multiple Nodes Are Combined To optimize the reverse path for the correct signal levels the output of the reverse combiner should be within 1 5 dB of the lowest signal before padding In the example shown in Figure 3 2 six nodes are combined The test signal is injected to be at the designed input level for the first active element amplifier As the test signal is injected measure the input level to the combiner at the headend and record the level The lowest level signal becomes the reference for adjusting the level to the input of the combiner In the figure the lowest level signal is the input at 24 dBmV The signals should be padded at the input of the combiner to be within 1 5 dB of the lowest signal If a signal is 2 dB hotter than the lowest signal add a 3 dB pad to make it 1 dB lower See the input at D 304823 A Rev 01 3 3 LCe 4 Integrated Headend Controller Installation Manual If a signal is 4 dB hotter than the lowest signal add a 3 dB pad to make it 1 dB hotter See the input at B This ensures that when the remote nodes auto adjust their transmit levels they will not exceed the designed input level of the first active device Follow the reverse pad selection Instructions for the pad on the output of the combiner A 30dBmV o 24 dBmV 28 dBmV 25 dBmV B 12 dB Attenuator 25 dBmV 25 dBmV 1
71. reverse channel amplifiers In forward path calculations the key reference point is the output level of the amplifier For reverse path calculations the input level to the first active device becomes the key reference point Once the level is known by system design all reverse path losses and gains back to the headend and translator are accounted for The key for selecting the attenuation for the reverse path is knowing the input level to the first active device see Figure 3 1 The cable modems minimum output is 30 dBmV The path loss from the subscriber location to the first active device must be sufficient enough so that a lower level is not required to reach the designed input level of the first active device When this process is followed the reverse path is optimized for the 27 dB of cable modem TX range The path loss from the subscriber to the first active device cannot exceed 27 dB If exceeded the cable modem transmitter would be at its maximum output and not be able to reach the TX level required to provide optimum performance 3 2 304823 A Rev 01 Operator Instructions r A C Bay Networks Headend Controller Q Pads based on designed output level oflastactive device in the S Res upstream path gt Reverse Forward Y Combiner Combiner Reverse Forwa
72. s Comm Port 2 Baud 19200 Data Bits 8 Stop Bits 1 Parity none Flow Control none off Emulation VT100 Miscellaneous Function arrow and Ctrl keys as Terminal Keys Append LF line feed to incoming line ends 4 10 304823 A Rev 01 Console Port Interface Generating Commands with Windows Based Terminal Emulators The following sequence can be used to enter commands to the LCe 4 using Windows based terminal emulator software 1 Open Notepad exe 2 Enter the desired command using proper structure as described in the next section Use the Enter or Return key to generate the CR at the end of the command line 3 Highlight the entire command line including the CR 4 From the Edit menu select copy In Windows 3 11 Terminal exe 5 From Edit menu select paste In Windows 95 HyperTerminal 5 Position pointer in the terminal window and Right click mouse or open the Edit menu and select Paste to Host Using Function Keys When programming F Keys to perform commands always add the carriage return symbol M at the end of the command string Command Structure The command structure consists of a sequence of ASCII characters terminated by a carriage return There can be a maximum of 4 ms between consecutive message bytes ASCII characters are case insensitive Commands are to be in one of the following two general formats lt start gt ADD lt sp gt NET lt sp gt CC lt sp gt CRC lt cr gt or
73. sity of California Berkeley The name of the University may not be used to endorse or promote products derived from such portions of the software without specific prior written permission SUCH PORTIONS OF THE SOFTWARE ARE PROVIDED AS IS AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE In addition the program and information contained herein are licensed only pursuant to a license agreement that contains restrictions on use and disclosure that may incorporate by reference certain limitations and notices imposed by third parties Bay Networks Inc Software License Agreement NOTICE Please carefully read this license agreement before copying or using the accompanying software or installing the hardware unit with pre enabled software each of which is referred to as Software in this Agreement BY COPYING OR USING THE SOFTWARE YOU ACCEPT ALL OF THE TERMS AND CONDITIONS OF THIS LICENSE AGREEMENT THE TERMS EXPRESSED IN THIS AGREEMENT ARE THE ONLY TERMS UNDER WHICH BAY NETWORKS WILL PERMIT YOU TO USE THE SOFTWARE If you do not accept these terms and conditions return the product unused and in the original shipping container within 30 days of purchase to obtain a credit for the full purchase price 1 License Grant Bay Networks Inc Bay Networks grants the end user of the Software Licensee a personal nonexclusive nontr
74. tLength 1 TXCRC And 255add CRC characters LSB first bytOutput intLength Int TXCRC 256 And 255 End Sub 4 26 304823 A Rev 01 Console Port Interface Name CRCRxCompute Purpose computes the CRC 16 on an array of bytes Arguments bytInput Contains the input byte array This array must contain only the received message including CRC The result is computed using all the elements in this array Returns Error Code 0 success 1 fail Function int CRCRxCheck bytInput As Byte As Integer Dim I As Integer Dim DBRX As Byte Dim X As Byte RXCRC 0 X 0 For I 0 To UBound bytInput DBRX bytInput I X RXCRC And 255 Xor DBRX RXCRC Int RXCRC 256 TBL X Next If RXCRC 0 Then check computed CRC intCRCRxCheck 0 if 0 then success Else intCRCRxCheck 1 otherwise fail End End Function 304823 A Rev 01 4 27 LCe 4 Integrated Headend Controller Installation Manual 4 28 304823 A Rev 01 Channel Chart Appendix EIA Old Standard Data HRC Video HRC Data NCTA Designation Video Channel Frequency Channel Center Channel Historical Frequency Center Frequency Reference Frequency T 7 7 00 8 75 NA NA 8 13 00 14 75 9 19 00 20 75 10 25 00 26 75 T 11 31 00 32 75 12 37 00 3
75. tablish Block Sync If there is transmit traffic on either the Ethernet or Broadband networks the respective transmit LEDs will flash intermittently when traffic is present LCe 4 Dual Frequency Translators The frequency translator section of the LCe consists of a local controller and two frequency translators The controller has remote control capabilities but all functions can be performed locally without any remote connection LCe 4 Controls Mode Information The first line on the display is the Mode Information Line It shows the settings for the currently selected mode The six possible operating modes are Mode 0 Input Frequency Adjustment Display Mode 1 IF Power Adjustment Display Mode 2 Output Frequency Adjustment Display Mode 3 RF Power Adjustment Display Mode 4 RF Output Enable Disable Mode 5 Remote Address Select gt gt Se Status Information The second line on the display is the Status Information Line The Status Line is divided as follows The two leftmost characters refer to the status of Network A The possible displayed conditions are as follows Ae indicates that the RF output for Network A is enabled Am indicates that the RF output for Network is muted Ad indicates that the RF output for Network is disabled 304823 A Rev 01 1 5 LCe 4 Integrated Headend Controller Installation Manual The next two characters refer to the status of Network B The possible dis
76. the value labeled as X in the algorithm The third column shows the table value obtained from the lookup table using X as an index The final column shows the computed CRC at each step of the calculation The first row shows the values before beginning the calculation The last row shows that the CRC computed on the received message is zero 4 20 304823 A Rev 01 Console Port Interface RX DATA BYTE X TERM TABLE VALUE RX CRC 0 0 0 86 86 A281 A281 22 A3 7940 79 2 17 F5 47C0 47B9 2D 94 AF01 AF46 9C DA 9 81 9 2 BD 93 6D40 6DDB 7B A0 7800 786D 9C F1 84C1 84B9 70 C9 56 0 5644 6E 2A DF81 DFD7 FF 28 1E00 1EDF 59 86 A281 A29F EB 74 2700 27 2 45 4 40 4 67 8 6F 2C40 2C0A 38 32 D581 D5AD 60 CD 95 9514 14 0 0 95 95 0 0 0 Lookup Table The following table is used in the CRC 16 calculations All values in the table are in Hex format 304823 A Rev 01 4 21 LCe 4 Integrated Headend Controller Installation Manual X TERM ENTRY X TERM ENTRY X TERM ENTRY X TERM ENTRY 0 0 40 001 80 001 CO 5000 1 COCI 41 30 0 81 60 0 90 1 2 C181 42 3180 82 6180 C2 9181 3 140 43 141 83 141 5140 4 C301 44 3300 84 6300 C4 9301 5 3C0 45 F3C1 85 C5 53 0 6 280 46 281 86 281 C6 5280 7 C241 47 3240 87
77. ured IF power To configure the translator for optimum performance for both noise and intermodulation products the IF level should be adjusted to 37 dBmV An IF level less than 37 dBm V will degrade noise performance and a level above 37 dBmV will promote intermodulation products To set the IF level cycle the MODE button to the XX X dBmV display The IF level can now be adjusted to 37 dBmV using the UPIDOWN arrow buttons While in this mode the approximate IF output level will be displayed on the top line of the Display If the IF level is too high or too low an appropriate warning will be displayed 304823 A Rev 01 3 9 LCe 4 Integrated Headend Controller Installation Manual Output Frequency Adjust When the Output Frequency Mode is selected the first line of the display will read e XXX XX MHz where XXX XX is the currently stored output frequency The displayed frequency corresponds to the frequency at the center of the band 1 VHF channel 80 558 00 564 00 MHz 2561 00 MHz To adjust the output frequency use the UP DOWN arrow buttons Single stepping will allow 250 KHz adjustment while keeping the buttons depressed will change the frequency more quickly During frequency change the output is muted for five seconds to avoid undesirable interference and mute is displayed in the status line RF Level Adjust The maximum recommended output is 58 dBmV the minimum allowed output is 42
78. wn entry and display fields for Network A s pertinent LCe translator parameters These fields include Fin Input Frequency measured in MHz IF Adj Intermediate Frequency Adjust measured in dB IF Level Intermediate Frequency Level measured in dBmV Fout Output Frequency measured in MHz RF Adj Radio Frequency Adjust measured dB RF Level Radio Frequency Level measured in dBmV Output Enabled After connecting the Network A Configuration Fin pulldown entry field will read Fin XXX XX MHz where XXX XX is last stored frequency at shutdown The displayed frequency corresponds to the frequency at the center of the band 1 channel T 8 11 75 17 75 MHz 14 75 MHz To adjust the input frequency use the mouse cursor and click on the entry field s pulldown arrow Click on the desired center frequency During frequency change the output is muted for five seconds to avoid undesirable interference Modified frequencies are implemented as soon as the frequency is selected The IF level must adjusted to 37 dBmV 0 4 dB every time the input or output frequencies are set changed After connecting the Network A Configuration IF Adj pulldown entry field will read XX XdBmV where XX X is the currently measured IF power To configure the translator for optimum performance for both noise and intermodulation products the IF level should be adjusted to 37 dBmV An IF lev
79. y field will read RFout where XX X is the currently measured RF power To set the RF level use the mouse cursor and click on the entry field s pulldown arrow The RF level can now be adjusted using the mouse cursor to select an appropriate attenuation number While in this mode the approximate RF output level will be displayed in the RF Level display box RF Level The RF Level indicates the currently measured Radio Frequency power See RF Adj above Output Enabled When the RF Output Enabled box is selected and the output is currently enabled then the RF out is enabled 304823 A Rev 01 4 9 LCe 4 Integrated Headend Controller Installation Manual When the RF Output Enabled box is selected and the output is currently disabled then the RF out is disabled Network B Configuration This area of the LCe 4 User Interface screen provides the pulldown entry and display fields for Network B s pertinent LCe translator parameters Refer to Network A Configuration for descriptions of the parameters Status Bar The Status Bar displays the date and time and the last entered command Using Terminal Emulation Terminal Configuration It is possible to communicate with the LCe 4 using any standard terminal program 1 the Terminal exe with Win3 1 or Win95 It is also possible to use HyperTerminal with Win95 The following connection settings are required to communicate with the LCe 4 Port setting
80. y precautions to follow when installing the Integrated Headend Controller For your protection observe the following safety precautions when setting up your equipment Follow all warnings and instructions marked on the equipment Ensure that the voltage and frequency of your power source matches the voltage and frequency inscribed on the equipment s electrical rating label Never push objects of any kind through openings in the equipment Dangerous voltages may be present Conductive foreign objects could produce a short circuit that could cause fire electric shock or damage to your equipment Symbols The following international symbols appear in this book in places where you must perform procedures requiring proximity to electrical current Modifications to Equipment Do not make mechanical or electrical modifications to the equipment The Integrated Headend Controller may not meet regulatory compliance if modified Caution You risk damaging your equipment if you do not heed the instructions Warning Hazardous voltage is present To lessen the risk of electrical shock and danger to personal health follow the instructions carefully xvi 304823 A Rev 01 About This Document Placement of the Integrated Headend Controller AN Caution To ensure reliable operation of the Integrated Headend Controller and to protect it from overheating do not block or cover openings in the equipment Never place the I
81. ystem Any changes or modifications may void the user s authority to oper ate this equipment EN 55 022 Statement This is to certify that Bay Networks LCe 4 is shielded against the generation of radio interference in accordance with the application of Council Directive 89 336 EEC Article 4a Conformity is declared by the application of EN 55 022 Class A CISPR 22 Voluntary Control Council for Interference Statement COE EKRE VCCI DRE CED 72A ARERR CHATS CBR TEMNDVET HKIBRKENSTEMHVET This is a Class A product based on the standard of the Voluntary Control Council for Interference from Information Technology Equipment VCCI If this is used near a radio or television receiver a domestic environment it may cause radio interference Install and use the equipment according to the instruction manual Reglement sur le brouillage radio lectrique du ministere des Communications Cet appareil num rique LCe 4 respecte les limites de bruits radio lectriques visant les appareils num riques de Classe prescrites dans le R glement sur le brouillage radio lectrique du Minist re des Communications du Canada EC Declaration of Conformity This product conforms to the provisions of Council Directive 89 336 EEC and 73 23 EEC ii 304823 A Rev 01 4 Integrated Controller Installation Manual This manual in conjunction wit

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