Alpha CMD-N Cisco GS7000 Technical Manual

Brand: Alpha

Model: CMD-N Cisco GS7000

Type: Technical Manual

CMD-N GS7000

Technical Manual

Effective: May 2016

Safety Notes

Alpha considers customer safety and satisfaction its most important priority. To reduce the risk of

injury or death and to ensure continual safe operation of this product, certain information is presented

differently in this manual. Alpha tries to adhere to ANSI Z535 and encourages special attention and

care to information presented in the following manner:

The following sections contain important safety information that must be followed during the installa-

tion and maintenance of the equipment and batteries. Read all of the instructions before installing or

operating the equipment, and save this manual for future reference.

There may be multiple warnings associated with the call out. Example:

ATTENTION provides specic regulatory/code requirements that may affect the placement of equip-

ment and /or installation procedures.

ATTENTION:

NOTICE provides additional information to help complete a specic task or procedure.

NOTICE:

ELECTRICAL HAZARD WARNING provides electrical safety information to PREVENT

INJURY OR DEATH to the technician or user.

WARNING! ELECTRICAL HAZARD

FUMES HAZARD WARNING provides fumes safety information to PREVENT INJURY OR

DEATH to the technician or user.

WARNING! FUMES HAZARD

FIRE HAZARD WARNING provides ammability safety information to PREVENT INJURY OR

DEATH to the technician or user.

WARNING! FIRE HAZARD

This WARNING provides safety information for both Electrical AND Fire Hazards

WARNING! ELECTRICAL & FIRE HAZARD

CAUTION provides safety information intended to PREVENT DAMAGE to material or

equipment.

CAUTION!

GENERAL HAZARD WARNING provides safety information to PREVENT INJURY OR

DEATH to the technician or user.

WARNING! GENERAL HAZARD

3018-345-B0-001, Rev. A (05/2016)

CMD-N GS7000

Technical Manual

018-345-B0-001 Rev. A

Effective Date: May 2016

2016 by Alpha Technologies, Inc.

Disclaimer

Images contained in this manual are for illustrative purposes only. These images may not match

every installation.

Operator is cautioned to review the drawings and illustrations contained in this manual before

proceeding. If there are questions regarding the safe operation of this powering system, contact Alpha

Technologies or the nearest Alpha representative.

Alpha shall not be held liable for any damage or injury involving its enclosures, power supplies,

generators, batteries or other hardware if used or operated in any manner or subject to any condition

not consistent with its intended purpose or is installed or operated in an unapproved manner or

improperly maintained.

Contact Information

Sales information and customer service in USA

(7AM to 5PM, Pacic Time):

Complete technical support in USA

(7AM to 5PM, Pacic Time or 24/7 emergency support):

Website:

866 944 1482

www.alpha.com

412 923 3486

4 018-345-B0-001, Rev. A (05/2016)

Table of Contents

1.0 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.2 Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.3 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.4 Technical Support Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.0 Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

2.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

2.2 Connector Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.3 CMD-N Transponder Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

RF Transmit/Receive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.0 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.1 Provisioning the Transponders in the Network . . . . . . . . . . . . . . . . . . . . . . . . 14

3.2 Network Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.3 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.4 Cable Modem Conguration File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.5 Installing the CMD-N Transponder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

GS7000 Node Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

1 GHz GS7000 Non-Redundant Node Installation . . . . . . . . . . . . . . . . . . . . . . 22

GS7000 Optical Hub Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.6 Conguring the Transponder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

SA-HMS-FIBERNODEGS7000-MIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

3.7 Module Firmware Download Using the CHEETAH-MGMT-UPDATE-MIB . . . . . . . . . . 33

3.8 Checking the LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

4.0 Provisioning the SNMP Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

4.1 MIB Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

4.2 Acquiring the Transponders by the SNMP Manager . . . . . . . . . . . . . . . . . . . . . 39

5.0 Using the Craft Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

5.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

5.2 Web Page Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

5.3 Console Access. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

5018-345-B0-001, Rev. A (05/2016)

6.0 CMD-N Web Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

6.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

6.2 Logging In . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

6.3 Web Page Summaries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Home Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

System Pages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Hardware Diagram Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

HFC Node Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

System Data Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

DOCSIS Page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Alarms Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Modem Log Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Constellation Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

6.4 Conguring the Node . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

General Node Conguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Node Module Conguration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Other Congurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

6.5 Conguring the Web Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

7.0 Cable Pinout Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

7.1 Ethernet Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

8.0 Upgrading the CMD-N Firmware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Table of Contents

6 018-345-B0-001, Rev. A (05/2016)

Figures

Fig. 1-1, The CMD-N Transponder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Fig. 2-1, CMD-N Transponder Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Fig. 2-2, CMD-N Transponder Upstream Pad Location . . . . . . . . . . . . . . . . . . . . . . . 12

Fig. 3-1, A Typical Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Fig. 3-2, Cable Modem Conguration File Example . . . . . . . . . . . . . . . . . . . . . . . . . 16

Fig. 3-3, Upstream Pad Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Fig. 3-4, Fiber Node Interface Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Fig. 3-5, Fiber Node Transponder Slot and Interface Connector . . . . . . . . . . . . . . . . . . 18

Fig. 3-6, Transponder Mounting Screw Locations . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Fig. 3-7, Transponder RF1 Cable Attachment Points . . . . . . . . . . . . . . . . . . . . . . . . 20

Fig. 3-8, Transponder RF2 Cable Attachment Points . . . . . . . . . . . . . . . . . . . . . . . . 21

Fig. 3-9, Completed Transponder Installation in the Node . . . . . . . . . . . . . . . . . . . . . . 21

Fig. 3-10, Transponder with Return Path Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Fig. 3-11, Pad Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Fig. 3-12, Pad Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Fig. 3-13, Fiber Node Interface Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Fig. 3-14, Fiber Node Transponder Slot and Interface Connector . . . . . . . . . . . . . . . . . . 24

Fig. 3-15, Transponder Mounting Screw Locations . . . . . . . . . . . . . . . . . . . . . . . . . 25

Fig. 3-16, Return Path Cable Installed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Fig. 3-17, RF1 to Optical Receiver 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Fig. 3-18, RF2 to Optical Receiver 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Fig. 3-19, Completed Transponder Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Fig. 3-20, Upstream Pad Socket with Proper 0 dB Pad Installed . . . . . . . . . . . . . . . . . . 29

Fig. 3-21, Optical Hub Interface Connector on CMD-N . . . . . . . . . . . . . . . . . . . . . . . 30

Fig. 3-22, Optical Hub Transponder Slot and Interface Connector . . . . . . . . . . . . . . . . . 30

Fig. 3-23, Transponder Mounting Screw Locations . . . . . . . . . . . . . . . . . . . . . . . . . 31

Fig. 3-24, Update Example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Fig. 3-25, The CMD-N Transponder LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Fig. 5-1, Console Main Page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Fig. 5-2, Console Prompt Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Fig. 5-3, Console Device Folder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Fig. 5-4, Console Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Fig. 6-1, GS7000 Home Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Fig. 6-2, Log in via GS7000 Home Page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Fig. 6-3, GS7000 Home Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Fig. 6-4, System Link, Navigation Pane, GS7000 Home Page . . . . . . . . . . . . . . . . . . . 47

Fig. 6-5, Hardware Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Fig. 6-6, HFC Node Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Fig. 6-7, Alarm Settings Popup Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Fig. 6-8, System Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Fig. 6-9, DOCSIS Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Fig. 6-10, Limit Properties, Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Fig. 6-11, Discrete Properties, Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Fig. 6-12, Modem Log Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Fig. 6-13, Constellation Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

7018-345-B0-001, Rev. A (05/2016)

Tables

Table 1-1, CMD-N Package Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Table 1-2, Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Table 1-3, Technical Support Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Table 2-1, Connector Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Table 3-1, Network Worksheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Table 3-2, SA-HMS-FIBERNODEGS7000-MIB . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Table 3-3, LED Status Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Table 4-1, Management Information Base (MIB) Files . . . . . . . . . . . . . . . . . . . . . . . . 37

Table 4-2, Management Information Base (MIB) Files . . . . . . . . . . . . . . . . . . . . . . . . 37

Table 4-3, Additional Supported Management Information Base (MIB) Files . . . . . . . . . . . . 38

Table 4-4, High-resolution optical power in ATI-DEV-HFC-NODES-MIB. . . . . . . . . . . . . . . 38

Table 5-1, OIDs for Usernames, Passwords, Telnet Access for Console Access . . . . . . . . . . 41

Table 5-2, TelnetIpStackInterfaces OID Values and Descriptions . . . . . . . . . . . . . . . . . . 42

Table 5-3, Telnet Access Matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Table 5-4, Commands Available in the Device Section of Console Mode . . . . . . . . . . . . . . 43

Table 6-1, Alarm Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Table 6-2, Downstream Table Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Table 6-3, QAM Constellation Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Table 6-4, Node Conguration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Table 6-5, OIDs for Port Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Table 6-6, OIDs for Usernames and Passwords for Web Interface Access . . . . . . . . . . . . . 65

Table 6-7, ATI-MGMT-SYS-HTTP-LOGINS-MIB . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Table 7-1, Pin Number Conguration Chart for the Ethernet Cable . . . . . . . . . . . . . . . . . 67

Fig. 6-14, Normal Centered Dots (Good Sound Quality). . . . . . . . . . . . . . . . . . . . . . . 58

Fig. 6-15, Fuzzy (Low CNR and/or Low MER) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Fig. 6-16, Circular Smear (Phase Noise). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Fig. 6-17, Corners Squeezed to Center (Gain Compression) . . . . . . . . . . . . . . . . . . . . 59

Fig. 6-18, Rectangular vs. Square (I-Q Imbalance) . . . . . . . . . . . . . . . . . . . . . . . . . 60

Fig. 6-19, Twisted or Skewed (Quadrature Distortion) . . . . . . . . . . . . . . . . . . . . . . . . 60

Fig. 6-20, GS7000 Hardware Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Fig. 6-21, Conguring Module Slots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Fig. 6-22, System Data Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Figures

8 018-345-B0-001, Rev. A (05/2016)

1.0 Introduction

1.1 Overview

The CMD-N transponder provides the ability to manage ber nodes and optical hubs through an existing cable modem

infrastructure. Contact an Alpha Technologies representative for a complete listing of supported ber nodes.

The transponder transmits data to a management system over the network’s existing DOCSIS® infrastructure, using

standard SNMP (Simple Network Management Protocol). Status monitoring information is compatible with ANSI/SCTE

HMS standards.

Fig. 1-1, The CMD-N Transponder

The CMD-N transponder:

• Uses ANSI/SCTE HMS standards

• Measures analog values and digital states or receives digital SCTE/HMS data from ber nodes

• Can be network managed through the existing CMTS.

• Allows remote control and conguration of the node.

• Can provide a remote upgrade of node module rmware.

To the cable network infrastructure, the CMD-N transponder appears as a DOCSIS 2.0 cable modem. The transponder

is assigned an IP address like any other DOCSIS device on the DOCSIS network. The assigned IP address is used to

access the HMS status monitoring data via SNMP and the HMS MIBs.

For complete DOCSIS specications, see Cable Laboratories specications (Cable Labs Public DOCSIS SPECS) at

www.cablelabs.com.

1.0 Introduction, continued

9018-345-B0-001, Rev. A (05/2016)

CMD-N Package Parts List

Description Part Number Qty

CMD-N Cisco GS7000, 1.2GHz 018-345-20 1

CMD-N Cisco GS7000, 1GHz 66900-0722 1

Optional GS7000 RF Cable Kit

(required for 1GHz nodes with cable modem downstream

frequencies above 140MHz; not required for optical hubs)

66905-0340 1

Optional non-redundant upstream cable

(required for 1Ghz nodes with segmented upstream paths)

66900-1205 1

0 dB pad N/A 1

10 dB pad N/A 1

Revision History - P/N 050-0201

Version Date Description of Changes and New Features

A 6 / 2009 Initial Release of Document

B 1 / 2010 Formatting and Graphic Updates

C 9 / 2010 Added Support for Cisco’s Optical Hub

D 3 / 2015 Formatting, Section 3.7 MIB Update, Other Minor Section Changes

1.2 Parts List

Table 1-1 lists the transponder and any other items that may be available as options. For damage or discrepancies, please

contact an Alpha Technologies representative.

Table 1-1, CMD-N Package Parts List

1.3 Revision History

This section contains revision tracking information such as document version, release date, and descriptions of changes

and new features.

Revision History - 018-345-B0

Version Date Description of Changes and New Features

A 05/2016

Initial Release of Document under new part number, updating of

transponder and node models and rmware revision.

Table 1-2, Revision History

1.0 Introduction, continued

10 018-345-B0-001, Rev. A (05/2016)

1.4 Technical Support Contact Information

For technical issues, Cisco customers should call the following Cisco Technical Support and Customer Service Numbers.

Technical Support Contact Information

Region Centers Telephone and Fax Numbers

North America Atlanta, Georgia

Technical Support Customer Service

Toll-Free: 1-800-722-2009

Local: 678-277-1120 (Press 3 at

the prompt)

Local: 678-277-1120

Fax: 770-236-5477

Email: customer-service@cisco.

com

Europe, Middle East,

Africa

Belgium

Technical Support Customer Service

Telephone #1: 32-56-445-197 Telephone: 32-56-445-444

Telephone #2: 32-56-445-155 Fax: 32-56-445-051

Fax: 32-56-445-061 Email: [email protected]

Japan Japan

Telephone #1: 81-3-5908-2153

Telephone #2: +81-3-5908-2154

Fax: 81-3-5908-2155

Korea Korea

Telphone: 82-2-3429-8800

Fax: 82-2-3452-9748

Email: [email protected]

China (mainland) China

Telephone: 82-2-3429-8800

Fax: 82-2-3452-9748

Email: [email protected]

All other Asia Pacic

countries & Australia

Hong Kong

Telephone: 852-2588-4746

Fax: 852-2588-3139

Email: [email protected]

Brazil Brazil

Telephone: 11-55-08-9999

Fax: 11-55-08-9998

Email #1: [email protected]

Email #2: [email protected]

Mexico, Central

America, Carribean

Mexico

Technical Support Customer Service

Telephone: 52-351512599 Telephone: 52-55-50-81-8425

Fax: 52-3515152599

Fax: 52-55-52-61-0893

Email: [email protected]

All other Latin

America countries

Argentina

Technical Support Customer Service

Telephone: 54-23-20-403340

ext: 109

Telephone: 770236-5662

Fax: 770-236-5888

Fax: 54-23-20-403340 ext: 103 Email: [email protected]

Table 1-3, Technical Support Contact Information

11018-345-B0-001, Rev. A (05/2016)

2.0 Connections

2.1 Overview

The CMD-N transponder includes six status LEDs, the Craft port (which is a standard RJ-45 Ethernet connector), an

optical tamper sensor, and a node interface connector. The transponder receives its power and performs communications

all via the node interface connector. The transponder also has a pad socket to attenuate the upstream signal from the

transponder. This is so the transponder can be congured for different implementations. If the transponder is to be used in

a GS7000 node then the 10 dB pad must be used. If the transponder is to be used in a GS7000 Optical Hub then the 0 dB

pad must be used. The locations of these components are shown in Fig. 2-1 and Fig. 2-2.

Fig. 2-1, CMD-N Transponder Connections

The Craft port provides local access to the transponder. However, it is important to note that the Craft port is a fully

functional standard Ethernet port capable of providing all the functionality of any standard Ethernet connections.

NOTICE:

Interface Connector

Tamper Sensor

Craft Port

LEDs

Downstream RF

Cable Connectors

Label with Transponder

Serial Number

2.0 Connections, continued

12 018-345-B0-001, Rev. A (05/2016)

Fig. 2-2, CMD-N Transponder Upstream Pad Location

Upstream Pad

Socket with

Pad Installed

Connector Summary

Connector Description

DS RF1 CABLE*

The Forward (Downstream) RF1 cable is the physical connection to the forward RF -20dB test

point of optical receiver 1 (OPTRX1).

DS RF2 CABLE*

The Forward (Downstream) RF2 cable is the physical connection to the forward RF -20dB test

point of optical receiver 2 (OPTRX2).

CRAFT

The Craft port provides a local, physical connection to the transponder. This connection can be

used for onsite conguration of the node, modules and transponder. In addition, the Craft port is

a fully functional standard Ethernet port capable of providing all the functionality of any standard

Ethernet connection.

INTERFACE

CONNECTOR

The Interface Connector is the physical connection point at which the transponder attaches

to the node or optical hub. The interface connector provides the transponder power, internal

communications and a possible upstream RF connection.

TAMPER SENSOR

The Tamper Sensor provides an indication of physical tampering (opening of the node

enclosure).

LED Indicators

The CMD-N transponder includes six green LEDs:

• PWR

• DS

• US

• Online

• Elink

• Stat

These indicate transponder status. For details on the LEDs and their indications, see the

section titled “Checking the LEDs” presented in this manual.

Upstream Pad Socket

The Pad Socket is to attenuate the upstream signal from the transponder. If the transponder is

to be used in a GS7000 node then the 10 dB pad must be used. If the transponder is to be used

in a GS7000 Optical Hub then the 0 dB pad must be used.

* Not required for optical hubs or 1.2GHz nodes.

If a pad with a value less than 10 dB is used and the transponder is used in a GS7000, there is a risk the output

power of the transponder may be too high for the node transmitter.

NOTICE:

The Interace Connector is fragile and must be handled carefully to avoid damage

CAUTION!

Table 2-1, Connector Summary

2.2 Connector Summary

2.0 Connections, continued

13018-345-B0-001, Rev. A (05/2016)

2.3 CMD-N Transponder Specications

General

DOCSIS: Version 2.0

HMS Monitoring Protocol: SNMP v1

DOCSIS Monitoring Protocol: SNMP v1, v2, v3

RF Interface: Internal

RF Internal Padding: Congurable JXP pad for 15 dB Upstream

Ethernet Interface: RJ45

Operating Temperature: –40°C to +75°C

Humidity: 10% to 90% (non-condensing)

EMI/EMC: FCC Part 15 Class A, CE EN50022 Class A

RF Transmit/Receive

Tx Frequency Range: 5 to 42 MHz

Tx Output Power: +8 to +58 dBmV

Rx Frequency Range: 88 MHz to 860 MHz

Rx Input Level: –15 to +15 dBmV

Channel Bandwidth: 6 and 8 MHz

14 018-345-B0-001, Rev. A (05/2016)

3.0 Installation

Cable modem infrastructures are likely to have unique characteristics; therefore, Alpha Technologies strongly

recommends completely installing one transponder and making it operational before deploying the entire system

throughout the network.

Installing the transponders and making them operational consists of the following steps, which are explained in detail in

this chapter.

• Provisioning the transponders in the network

• Adding conguration data to the cable modem conguration le

• Installing the transponder

• Powering the transponder and checking the LEDs for status.

3.1 Provisioning the Transponders in the Network

Before installing CMD-N transponders, the transponder must be provisioned in the network for the network to recognize,

discover, and communicate with the transponders when they are powered up. The following graphic shows a typical

network.

Fig. 3-1, A Typical Network

Some provisioning systems require that the transponder’s MAC address be added to the CMTS prior to installing

the transponder to achieve full functionality.

NOTICE:

HFC

Tap

Power Supply

Fiber Node

CMD-N

Transponder

Web Client

Softswitch

Cable Modem.cfg TFTP

Server

Provisioning

Server

Time of Day

Server

CheetahXD /

SNMP Manager

Fault and

Performance

Management

OSS Integration

IP Network

Alpha DOCSIS Cable Modem

Firmware Image Upgrade

CMTS

3.0 Installation, continued

15018-345-B0-001, Rev. A (05/2016)

3.2 Network Information

Record the values of the network items below to facilitate the deployment process.

Network Worksheet

Network Item Value

Cable Modem MAC Address

Cable Modem IP Address

TFTP Server IP Address

Provisioning Server IP Address

Time of Day Server IP Address

DHCP Server IP Address

Table 3-1, Network Worksheet

3.3 Security

Different security methods are used to ensure network integrity. Some common issues are:

• The transponder’s MAC address may have to be pre-loaded into the CMTS

• MAC ltering may have to be modied to allow MAC addresses starting with 00:90:EA:xx:xx:xx, 00:26:97:xx:xx:xx,

and 00:10:3F:xx:xx:xx to be registered

• For SNMP access, UDP ports 161 and 162 must not be blocked.

• Remote transponder Web page access requires TCP port 80 to be opened.

• Firewalls must allow communication between the cable modem and the various servers.

3.4 Cable Modem Conguration File

Alpha Technologies strongly recommends you ensure that the cable modem conguration le has been successfully

modied and tested prior to deploying transponders into the system in quantity. The transponder manages SNMP lters

and trap destinations via the docsDevNmAccessTable.

To ensure the proper management of SNMP access, such as limiting access to certain SNMP managers or allowing

the transponder to send SNMP/HMS traps, the docsDevNmAccessTable must be populated via the cable modem

conguration le.

Additional OIDs may be added to further congure other options such as the transponder’s HTTP port, its username and

password conguration information (please refer to “6.0 CMD-N Web Interface”), or its support for telnet server access

(please refer to “5.3 Console Access”).

3.0 Installation, continued

16 018-345-B0-001, Rev. A (05/2016)

The following is a sample cable modem conguration le. Include only those OIDs that will provide the desired features

and functionality.

The conguration le entries shown above starting with “docsDevNmAccess” all end with a “.1”. The “.1” is a

row index indicating row 1 in the docsDevNmAccess table. Additional rows can be added to this table by adding

additional sets of docsDevNmAccess entries with different row indexes. A given row index may only be used once.

NOTICE:

Fig. 3-2, Cable Modem Conguration File Example

3.0 Installation, continued

17018-345-B0-001, Rev. A (05/2016)

3.5 Installing the CMD-N Transponder

The following sections provide information for installing the CMD-N transponder in the following devices:

• GS7000 Node

• 1GHz GS7000 Non-redundant Node

• GS7000 Optical Hub

Refer to the appropriate section for installing the CMD-N transponder into the appropriate node hardware.

GS7000 Node Installation

If a pad with a value less than 10 dB is used and the transponder is used in a GS7000 Node, there is a risk that the

output power of the transponder may be too high for the node transmitter.

NOTICE:

Fig. 3-3, Upstream Pad Replacement

If the transponder is congured as “non redundant” and being installed in a 1GHz node, refer to the next section, “1

GHz GS7000 Non-Redundant Node Installation.”

NOTICE:

Remove the transponder from the shipping package.

Ensure the correct pad for the desired application is installed in the pad socket. For GS7000 Node installations, verify the

use of the 10 dB pad in the transponder pad socket. If any other size pad is in place (e.g., a zero (0) dB pad), replace it

with the 10 dB pad as shown below.

3.0 Installation, continued

18 018-345-B0-001, Rev. A (05/2016)

Position the transponder so that the interface connector shown in Fig. 3-4 aligns with the node’s interface connector

shown in Fig. 3-5.

Interface Connector

Fiber Node Interface Connector

Fig. 3-4, Fiber Node Interface Connector

Fig. 3-5, Fiber Node Transponder Slot and Interface Connector

3.0 Installation, continued

19018-345-B0-001, Rev. A (05/2016)

Firmly push the transponder down onto the node’s mother board until transponder seats into position. Use the screws

provided with the transponder to secure the transponder to the motherboard. The screw locations are shown in Fig. 3-6.

Transponder Screw Locations

The Interface connector is a complex high density connector; appropriate care must be exercised when installing

the transponder to assure proper alignment between the connectors so that the pins are not damaged.

CAUTION!

Fig. 3-6, Transponder Mounting Screw Locations

3.0 Installation, continued

20 018-345-B0-001, Rev. A (05/2016)

For installation in a 1GHz node, attach the Forward RF1 cable to the Optical Receiver 1 -20 dB test point. Route the

cable(s) appropriately within the node. Refer to Fig. 3-7.

The cable must be inserted into the Optical Receiver 1 -20dB test point to ensure correct functionality. This is

because the transponder DS RF port that is used corresponds with which receiver is active, RCVR 1 or RCVR 2. If

RCVR 1 is the active receiver then the transponder DS RF 1 port is used. If RCVR 2 is the active receiver then the

transponder DS RF 2 port is used.

NOTICE:

Node RCVR 1 Connection

Transponder RF1 Connection

Fig. 3-7, Transponder RF1 Cable Attachment Points

If the transponder is installed into a 1.2GHz GS7000 node, the Forward RF1 and RF2 cables do not need to be

installed. The Forward signal will be received by the transponder through the interface connector on the OIB board.

NOTICE:

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Alpha CMD-N Cisco GS7000 Technical Manual

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