Alpha DOCSIS Analog User Manual

™

AlphaNet

Series

External DOCSIS® Analog T ransponder

Technical Manual

Effective: January, 2006

Alpha Technologies

Alpha Technologies

Power

®

External DOCSIS® Analog T ransponder

Technical Manual

745-419-C0-002, Rev. B

Effective Date: January, 2006

Copyright © 2006

Alpha Technologies, Inc.

member of The Group

NOTE:

Alpha denies responsibility for any damage or injury involving its enclosures, power supplies, generators,
batteries or other hardware, manufactured by Alpha or members of the Alpha Group, when used for an
unintended purpose, installed or operated in an unapproved manner, or improperly maintained.

NOTE:

Photographs and drawings contained in this manual are only for illustrative purposes. These photographs and
drawings my not exactly match your installation.

NOTE:

Review the written and illustrative information contained in this manual before proceeding. If there are
questions regarding the safe installation or operation of this powering system or enclosure, please contact
Alpha Technologies or your nearest Alpha representative.

TM

Contacting Alpha Technologies: www.alpha.com

or

For general product information and customer service (7 AM to 5 PM, Pacifi c Time), call

1-800-863-3930,

For complete technical support, call

1-800-863-3364

7 AM to 5 PM, Pacifi c Time or 24/7 emergency support

DOCSIS® is a Registered Trademark of CableLabs.

3

Table of Contents

Safety Notes .......................................................................................................................... 6

1.0 Introduction to the DOCSIS Transponder ...................................................................7

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

1.2 LED Indicators ................................................................................................. 9

2.0 Transponder Installation ...........................................................................................10

2.1 Provisioning the Transponder ........................................................................ 10

2.1.1 Network Connectivity ..........................................................................10

2.1.2 Transponder Confi guration Using the HMS.INI File .............................11

2.1.3 Transponder Confi guration Using Cable Modem Confi g File .............. 13

2.2 Battery Sense Cable and Aux Power Connections ........................................ 15

2.3 Power Supply Communication Card Settings ................................................ 20

2.4 Power Supply Interface Connection............................................................... 21

2.5 Input and Output Connections, XM2, XM, and AM Models............................ 23

2.6 Input and Output Connections, ZTT and ZTT+ Models ................................. 24

2.7 Input and Output Connections, Generic Models ............................................ 25

2.8 Transponder Placement ................................................................................. 26

2.9 Local and RF Connectors .............................................................................. 27

2.10 Verify Transponder Operation ........................................................................ 27

3.0 Network/Element Management Software ................................................................. 28

3.1 Provisioning the SNMP Manager ...................................................................28

3.2 Transponder Communication with the SNMP Manager ................................. 28

4.0 Using the Local Port ................................................................................................. 29

5.0 Specifi cations............................................................................................................ 30

4

745-419-C0-002, Rev. B

List of Figures

Fig. 1-1, DOCSIS External Analog Transponder ........................................................ 7

Fig. 1-2, Basic System Block Diagram ....................................................................... 8

Fig. 1-3, LEDs ............................................................................................................. 9

Fig. 2-1, 24VDC Battery Sense ................................................................................ 16

Fig. 2-2, 36VDC Battery Sense ................................................................................ 17

Fig. 2-3, 48VDC Battery Sense ................................................................................ 18

Fig. 2-4, Aux Power and Generator Ignition Battery Connectors .............................. 19

Fig. 2-5, Power Supply Interface Connections ......................................................... 22

Fig. 2-6, Input and Output Connections, XM2, XM, and AM Models ........................ 23

Fig. 2-7, Input and Output Connections, ZTT and ZTT+ Models .............................. 24

Fig. 2-8, Input and Output Connections, Generic Models.........................................25

Fig. 2-9, Suggested Transponder Mounting Location ............................................... 26

Fig. 2-10, Local Port ................................................................................................. 27

Fig. 2-11, RF Connection .......................................................................................... 27

Table 2-1, TLGDHMSInit MIB ................................................................................... 14

Table 2-2, Power Supply Communication Card Settings ..........................................20

Table 2-3, Power Supply Interface Connection......................................................... 21

5745-419-C0-002, Rev. B

Safety Notes

Review the drawings and illustrations contained in this manual before proceeding. If there are any questions
regarding the safe installation or operation of the system, contact Alpha Technologies or the nearest Alpha
representative. Save this document for future reference.

To reduce the risk of injury or death and to ensure the continued safe operation of this product, the following
symbols have been placed throughout this manual. Where these symbols appear, use extra care and
attention.

ATTENTION:

The use of ATTENTION indicates specifi c regulatory/code requirements that may affect the placement of
equipment and /or installation procedures.

NOTE:

A NOTE provides additional information to help complete a specifi c task or procedure.

CAUTION!
The use of CAUTION indicates safety information intended to PREVENT DAMAGE to material or

equipment.

WARNING!

WARNING presents safety information to PREVENT INJURY OR DEATH to the technician
or user.

6

745-419-C0-002, Rev. B

1.0 Introduction to the DOCSIS Transponder

The DOCSIS Analog Transponder provides the ability to manage network powering through existing
cable modem infrastructure. A single transponder can monitor and manage a power supply, batteries,
and generator. The transponder transmits data to a management system over the network’s existing
CMTS, and using standard SNMP (Simple Network Management Protocol) keeps bandwidth use to a
minimum. Status Monitoring information is compatible with ANSI/SCTE HMS standards.

With optional VoIP test functionality, the power supply transponder becomes a powerful network
diagnostics tool.

Whether extending the life of your network backup power through battery balancing, managing QoS
for VoIP services, or monitoring for trouble areas during an AC power outage, the Alpha DOCSIS
Analog Transponder provides the tools needed to manage today’s network power requirements, and
the ability to upgrade for tomorrow’s needs.

Features:

• Uses existing headend equipment

• Uses ANSI/SCTE HMS standards

• Single transponder supports a variety of power supply models

RF

GEN

P/N: 745-419-20-XXX
CM: 00:10:3F:XX:XX:XX
S/N: XXXXXX

1

PWR SPLY

1

Fig. 1-1, DOCSIS External Analog Transponder

BAT A/B

1

BAT C/D

AUX PWR

11

LOCAL

TX

RX

LCL

RDY

7745-419-C0-002, Rev. B

1.0 Introduction to the DOCSIS Transponder, continued

1.1 System Overview

The DOCSIS Analog Transponder receives data from a Universal Status Monitoring Card on
XM series power supplies, from the status monitor connector on Lectro ZTT power supplies,
or from the RPM card on AM power supplies. The transponder and power supply can be
network managed through your existing CMTS.

Power Supply

(XM, XM2, ZTT, or AM)

AlphaGen
Generator

System

To CMTS

R
F

P/N: 745-419-20-XXX

CM: 00:10:3F:XX:XX:XX

S/N: XXXXXX

Battery

String

1

PWR SPLY

GEN

Battery

String

BAT A/B AUX PWR

1

1

BAT C/D

1

1

LOCAL

TX

RX

Up to Four 24V, 36V, or 48V Battery Strings

Battery

String

Battery

String

Fig. 1-2, Basic System Block Diagram

8

745-419-C0-002, Rev. B

1.0 Introduction to the DOCSIS Transponder, continued

1.2 LED Indicators

TX: Indicates status of data transmission to CMTS.
OFF: Idle Status.
Flickering ON: Communicating with CMTS.
LCL: Indicates the status of the local Craft port.
OFF: No communication.

AUX PWR

1

LOCAL

TX

RX

LCL

RDY

ON fl ickering OFF: Ongoing communication.
RDY: Indicates operation status of the transponder.
Flashing ON and OFF: Normal Operation.
OFF: No power or malfunctioning transpon-

der.
ON: Transponder reset in progress.
RX: Status of data reception from CMTS.
ON: Communication established with

CMTS.
OFF: No communication with CMTS.
ON fl ickering OFF: Receiving data, CMTS link estab-

lished.
Flashing ON & OFF: Indicates loss of communication with

CMTS

Fig. 1-3, LEDs

9745-419-C0-002, Rev. B

2.0 Transponder Installation

Steps to a Successful Installation:

• Operator’s IT Department must allow the transponder’s Cable Modem (CM) to obtain an IP
address from the DHCP Server.

• Operator’s IT Department must load the hmsinit.ini fi le on the TFTP Server, or use the cable
modem confi g fi le (see section 2.1.3).

• Operator’s network security policies must allow SNMP traffi c to pass between transponder and
SNMP manager.

• Install the transponder and any related equipment in the enclosure.

• Connect an RF drop.

• Verify proper operation.

Quick Start Transponder Operation:

1. Verify the power supply communication card settings are correct. See Section 2.3 for details.

2. Provide power by connecting the battery sense cable or Auxiliary Power connection. Refer to
Section 2.2 for details.

3. Wait until the RDY LED begins fl ashing, and then connect the power supply interface connection.
See Section 2.4.

4. Connect all other Input/Output connections. See Section 2.5, 2.6, or 2.7 for details.

2.1 Provisioning the Transponder

Complete Sections 2.1.1 and 2.1.2 before connecting the transponder to the RF network.
Otherwise, you must reset each transponder.

2.1.1 Network Connectivity

The transponder’s cable modem must be recognized by the CMTS as a valid device,
be able to obtain an IP address from the DHCP server, locate the TFTP and TOD
servers, and communicate with the SNMP management server (trap receiver). Differ­ent security methods are used to insure network integrity, some common issues are:

• A “subscriber account” (where the subscriber is the transponder) may be required
for each transponder.

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

• MAC fi ltering may have to be modifi ed to allow MAC addresses starting with
00:10:3f:xx:xx:xx to be registered.

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

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

10

• If the address of the TFTP and/or TOD server is different than the DHCP server,
the response from the DHCP server must contain the TFTP and TOD
addresses.

745-419-C0-002, Rev. B

2.0 Transponder Installation, continued

2.1 Provisioning the Transponder, continued

2.1.2 Transponder Confi guration Using the HMS.INI File

The transponder’s cable modem, at fi rst power-up or reset command, requests a
confi guration fi le from the TFTP server. The fi le must contain the IP address of the
SNMP manager. It may also contain up to fi ve additional SNMP trap recipients.
The SNMP manager is the only device that can perform SNMP set/get/get-next
commands. The trap recipients and SNMP manager receive the same traps from the
transponder.

The following is a guideline on how to setup/write the hmsinit.ini fi le for the
transponder. Ensure the hmsinit.ini fi le has been successfully modifi ed, installed,
and tested prior to installing transponders into the system.

File Name

The fi le name of the HMS initialization fi le is: hmsinit.ini. Please note that the
fi le name is entirely in lower case. The alpha-case of the fi le name is unimportant on

a Windows based server, however the alpha-case is critical in a UNIX server. As a
result, it is considered good practice to have the fi le name in lower case regardless of
the server operating system.

Sample hmsinit.ini File
====BEGIN sample hmsinit.ini fi le===THIS LINE NOT IN FILE
// This identifi es the IP address of the SNMP manager

[SERVER IP]

10.1.1.5
// This identifi es the IP addresses of up to 5 SNMP trap receivers

[TRAP SERVER IP]

10.1.1.6

10.1.1.7
// This identifi es the IP address of the TOD server

[TIME SERVER IP]

10.1.1.8
// This sets the SNMP community string (default DOCSIS)

[DISCOVERY COMMUNITY]
DOCSIS

// This sets the Read Only access community string
[READ COMMUNITY]
apple

// This sets the Read/Write access community string
[READ/WRITE COMMUNITY]
ORANGE

// This sets the SNMP access to ENABLE or DISABLE (default DISABLE)
[SECURE SNMP]
ENABLE

//This identifi es the IP addresses of up to 5 Secure Host IPs
[SECURE HOSTS]

10.1.1.9

10.1.1.10
====END sample hmsinit.ini fi le===THIS LINE NOT IN FILE

11745-419-C0-002, Rev. B

2.0 Transponder Installation, continued

2.1 Provisioning the Transponder, continued

2.1.2 Transponder Confi guration Using the HMS.INI File, continued

NOTES:

• The “//” characters indicate an optional comment line.

• Please note that there is only one each <CR> and a <LF> (cursor return and line feed) at the end of every
section.

• There must also be only one <CR> and only one <LF> past the last character at the end of the fi le.

• The identifi ers (in brackets) must be in upper-case.

• The IP addresses must appear on the next line after the identifi er, one address per line. The addresses
that are shown are examples only.

• The “Trap Server” IP identifi er/section is optional.

• Only enter READ, READ/WRITE sections to enable the SNMP access list.

• Up to 5 IP addresses can be specifi ed under SECURE HOSTS. The Secure Host list will always include
the IP address under SERVER IP for a total of 6.

• The Community Strings (Discovery, Read, Read/Write) can be any alphanumeric string 20 characters
or less. Any combination of upper or lower case can be used, the string is case-sensitive. “Special”
characters or punctuation are allowed (@#$%^&*<>;:~ etc.).

• The DISCOVERY COMMUNITY string is effectively the same as the READ/WRITE COMMUNITY. It’s
default is DOCSIS and is primarily used by Cheetah software. With SECURE SNMP set to ENABLE, the
IP address making the read/write request must be in the SECURE HOSTS access list.

• Through the Local/Craft Port, the command SETREAD allows setting of the READ COMMUNITY string,
in case the hmsinit.ini fi le is not used or does not exist.

• Through the Local/Craft Port, the command SETWRITE allows setting of the READ/WRITE COMMUNITY
string, in case the hmsinit.ini fi le is not used or does not exist.

• Through the Local/Craft Port, the command SECURELIST will reveal the contents of the Secure SNMP
Access List as well as whether the feature is enabled or disabled.

12

745-419-C0-002, Rev. B

2.0 Transponder Installation, continued

2.1 Provisioning the Transponder, continued

2.1.3 Transponder Confi guration Using Cable Modem Confi g File

To eliminate the hmsinit.ini confi guration fi le, a select set of MIB variables
must be added to the cable modem confi g fi le. These MIB variables contain the
initialization parameters that replace the hmsinit.ini fi le. If the parameters are not
set in the cable modelm confi g fi le, the code will fall back to its previous operation
and attempt to load an hmsinit.ini fi le from the TFTP server.

Single IP Operation

1. The settings are obtained by the transponder through the normal boot process
via the cable modem confi g fi le. The transponder code uses the new MIB
variables to construct a fi le image in RAM. The fi le image will be transferred from
the transponder to the Dallas chip in the same manner as the hmsinit.ini.

2. If there are no hmsinit settings in the cable modem confi g fi le, the code will
attempt to retrieve the hmsinit.ini fi le from the TFTP server. This allows
current customers to continue with their existing setup utilizing hmsinit.ini.

Dual IP Operation

1. For customers specifying a different TFTP server for the HMS confi g, the code
operates as it currently does. The Dallas chip gets a TFTP fi le name from its
DHCP offer. It downloads hmsinit.ini directly as it does now. In this case
settings are not required in the cable modem confi g fi le.

2. Dual IP customers can use the cable modem confi g fi le to obtain the settings. In
this case, there is no need to supply a fi lename in the DHCP offer. The Dallas
side of the chip looks to see if there is a fi lename, if there is not, it attempts to
retrieve hmsinit.ini. When it recognizes there is no .ini fi le, it queries the
chip for the data.

NOTE:

The HMS confi g data, whether confi gured using the cable modem confi g fi le or hmsinit.ini, is set when
the unit boots. The transponder must be reset for confi guration changes to update. A separate HMS reset is
not required.

The following parameters will be supported in the MIB that replaces hmsinit.ini.
Note that this is the maximum set of parameters, some are optional.

[SERVER IP]

[TIME SERVER IP]

[TRAP SERVER IP]

[DISCOVERY COMMUNITY]

[READ COMMUNITY]

[READ/WRITE COMMUNITY]

[SECURE SNMP]

[SECURE HOSTS]

13745-419-C0-002, Rev. B

2.1 Provisioning the Transponder, continued

2.1.3 Transponder Confi guration Using CM Confi g File, continued

The following table lists the OID’s from the MIB for each parameter. In case of
any discrepancy the MIB itself should be considered correct. This is included as a
reference for creating the cable modem confi g fi les.

TLGDHMSInit MIB

PARAMETER OID TYPE VALUE
SERVER IP 1.3.6.1.4.1.2082.5.1.1.1.1.0 IP address Dotted decimal IP Eg. 172.16.3.42
TIME SERVER IP 1.3.6.1.4.1.2082.5.1.1.1.2.0 IP address Dotted decimal IPEg. 172.16.3.42
DISCOVERY

COMMUNITY
READ COMMUNITY 1.3.6.1.4.1.2082.5.1.1.1.4.0 Octet String
READ/WRITE

COMMUNITY
SECURE SNMP 1.3.6.1.4.1.2082.5.1.1.1.6.0 Integer 1 enabled 2 disabled
TRAP SERVER IP 1.3.6.1.4.1.2082.5.1.1.1.7.1.2.1 IP address 1 Dotted decimal IPEg. 172.16.3.42
TRAP SERVER IP 1.3.6.1.4.1.2082.5.1.1.1.7.1.2.2 IP address 2 Dotted decimal IPEg. 172.16.3.42
TRAP SERVER IP 1.3.6.1.4.1.2082.5.1.1.1.7.1.2.3 IP address 3 Dotted decimal IPEg. 172.16.3.42
TRAP SERVER IP 1.3.6.1.4.1.2082.5.1.1.1.7.1.2.4 IP address 4 Dotted decimal IPEg. 172.16.3.42
TRAP SERVER IP 1.3.6.1.4.1.2082.5.1.1.1.7.1.2.5 IP address 5 Dotted decimal IPEg. 172.16.3.42
SECURE HOSTS 1.3.6.1.4.1.2082.5.1.1.1.8.1.2.1 IP address 1 Dotted decimal IPEg. 172.16.3.42
SECURE HOSTS 1.3.6.1.4.1.2082.5.1.1.1.8.1.2.2 IP address 2 Dotted decimal IPEg. 172.16.3.42
SECURE HOSTS 1.3.6.1.4.1.2082.5.1.1.1.8.1.2.3 IP address 3 Dotted decimal IPEg. 172.16.3.42
SECURE HOSTS 1.3.6.1.4.1.2082.5.1.1.1.8.1.2.4 IP address 4 Dotted decimal IPEg. 172.16.3.42
SECURE HOSTS 1.3.6.1.4.1.2082.5.1.1.1.8.1.2.5 IP address 5 Dotted decimal IPEg. 172.16.3.42

1.3.6.1.4.1.2082.5.1.1.1.3.0 Octet String

1.3.6.1.4.1.2082.5.1.1.1.5.0 Octet String

25 character maxe.g.
DOCSISdefaults to DOCSIS

25 character maxdefaults to MAC
address

25 character maxdefaults to MAC
address

14

Table 2-1, TLGDHMSInit MIB

745-419-C0-002, Rev. B

2.0 Transponder Installation, continued

2.2 Battery Sense Cable and Aux Power Connections

The battery sense cable (BSC) is used for battery sensing and for powering the transponder.
Acceptable voltages are 20-60VDC. Install the cables as shown in the following diagrams.
The Aux Power connection is only needed when the battery pack is greater than 15 feet from
the transponder.

CAUTION!
Verify battery connections are correct prior to applying power. Incorrect battery connections can

permanently damage the transponder.

NOTE:

XM With Alpha External DOCSIS Transponder Installation Note: Alpha Battery Sense Cables, (BSC),

were designed to be used with all Alpha AM, XM, ZTT+, and XM2 power supplies. When using with an XM
power supply the following procedure must be used to ensure proper operation.

New Installs

1. When using with XM power supply and Alpha External DOCSIS Transponder, do not connect the black
(negative) wire on the BSC to the negative post on Battery #1.

Existing Sites

1. Disconnect BSC from battery connector (BAT A/B) on the transponder.

2. Locate the black (negative) wire and disconnect from the negative post on battery #1.

3. Remove the wire completely from the negative battery post. Insulate the ring lug connector using suitable
material, such as heat shrink or non-conductive tape.

4. Reconnect BSC to the battery connector (BAT A/B) and verify transponder operation.

15745-419-C0-002, Rev. B

2.0 Transponder Installation, continued

2.2 Battery Sense Cable and Aux Power Connections, continued

24V Systems

1

5

2

6

3

7
8

4

Back of Plug

1

5

2

6

3

7
8

4

Back of Plug

875-401-20 (6')
875-401-22 (9')

875-401-21 (6')
875-401-23 (9')

NEG

2A

POS

A/B [C/D] NEG (pin 1)

NEG

2A

POS

A/B [C/D] NEG (pin 1)

Vbatt 2A [C] 24V (pin 3)

Vbatt 2A [C] 24V (pin 3)

NEG

1A

POS

Vbatt 1A [C] 12V (pin 2)

NEG

1A

POS

Vbatt 1A [C] 12V (pin 2)

Vbatt 2B [D] 24V (pin 6)

NEG

2B

POS

Fig. 2-1, 24VDC Battery Sense Wire Kits

CAUTION!
When using the battery sense kit with XM power supplies, do not connect the A/B [C/D] NEG wire.

16

745-419-C0-002, Rev. B

Vbatt 1B [D] 12V (pin 5)

NEG

1B

POS

2.0 Transponder Installation, continued

2.2 Battery Sense Cable and Aux Power Connections, continued

36V Systems

1

5

2

6

3

7
8

4

Back of Plug

874-842-21 (6')
874-842-27 (9')

NEG

3A

POS

A/B [C/D] NEG (pin 1)

NEG

3A

POS

NEG

2A

POS

Vbatt 3A [C] 36V (pin 4)

NEG

2A

POS

NEG

1A

POS

Vbatt 2A [C] 24V (pin 3)

Vbatt 1A [C] 12V (pin 2)

NEG

1A

POS

CAUTION!

1

5

2

6

3

7
8

4

Back of Plug

874-842-20 (6')
874-842-28 (9')

Fig. 2-2, 36VDC Battery Sense Wire Kits

pin 3)
4V (

A/B [C/D] NEG (pin 1)

Vbatt 3B [D] 36V (pin 7)

Vbatt 3A [C] 36V (pin 4)

Vbatt 2B [D] 24V (pin 6)

NEG

3B

POS

2B

NEG

POS

Vbatt 2A [C] 2

Vbatt 1B [D] 12V (pin 5)

Vbatt 1A [C] 12V (pin 2)

NEG

1B

POS

When using the battery sense kit with XM power supplies, do not connect the A/B [C/D] NEG wire.

17745-419-C0-002, Rev. B

2.0 Transponder Installation, continued

2.2 Battery Sense Cable and Aux Power Connections, continued

48V Systems

1

5

2

6

3

7
8

4

Back of Plug

875-841-21 (6')
875-841-25 (9')

NEG

4A

POS

NEG

3A

POS

A/B [C/D] NEG (pin 1)

NEG

3A

POS

NEG

2A

POS

Vbatt 3A [C] 36V (pin 4)

NEG

2A

POS

NEG

1A

POS

Vbatt 2A [C] 24V (pin 3)

Vbatt 1A [C] 12V (pin 2)

NEG

1A

POS

1

5

2

6

3

7
8

4

Back of Plug

874-841-20 (6')
874-841-24 (9')

A/B [C/D] NEG (pin 1)

Vbatt A/B [C/D] 48V (pin 8)

NEG

4B

POS

Vbatt 3B [D] 36V (pin 7)

3B

Vbatt 3A [C] 36V (pin 4)

Vbatt 2B [D] 24V (pin 6)

NEG

POS

Vbatt 2A [C] 24V (pin 3)

NEG

2B

POS

Fig. 2-3, 48VDC Battery Sense Wire Kits

CAUTION!
When using the battery sense kit with XM power supplies, do not connect the A/B [C/D] NEG wire.

18

745-419-C0-002, Rev. B

Vbatt 1A [C] 12V (pin 2)

n 5)
(pi

12V

Vbatt 1B [D]

NEG

1B

POS

2.0 Transponder Installation, continued

2.2 Battery Sense Cable and Aux Power Connections, continued

Use the Aux Power connector to connect the ignition battery sense and auxiliary power
connections when the battery strings are located more than 15 feet from the transponder. The
Generator Ignition Battery Sense cable must be connected as shown below. Connect the Aux
Power connector where the red and black cables leading to the power supply are connected.

3

4
2

1

Back of Plug

NEG

1A

POS

To DOCSIS
Transponder

Optional
Auxiliary
Power

Alpha P/N 874-976-20

Wire
Entry
View

2

Ignition Pos.

1

Ignition Neg.

Optional Generator Ignition Battery Sense

Alpha P/N 875-038-20 (11')

Pin 1 - GEN NEG

Generator Ignition Battery Sense
Alpha P/N 875-038-20 (11’)

Pin 4 - AUX NEG

POS

4A

NEG

Pin 2 - GEN POS

ng

ri

48V St

String
36V

POS

3A

NEG

POS

2A

NEG

ring

24V St

Pin 3 - AUX POS

POS

1A

NEG

Fig. 2-4, Aux Power and Generator Ignition Battery Connectors

NOTE:

Pin 3 AUX POS connects to the last positive terminal in the string. This may vary depending on whether a
24V, 36V, or 48V string is used.

19745-419-C0-002, Rev. B

2.0 Transponder Installation, continued

2.3 Power Supply Communication Card Settings

The power supply communication card settings determine the digital/analog setup and
scaling that affect how information is reported to your network management system. Refer to
your power supply’s communication card settings to be certain that your communication card
is set up correctly. The following table is for reference only.

NOTE:

RPM-AM boards marked 700-019-28, 700-019-31, and 700-019-40 are compatible with the DOCSIS HMS
Analog Transponder.

XM - USM
P1 = 2 & 3
P2, P4, P5, P6 = Closed
P3 = Open
P7 = 5V
P8, P9, P13 = 1 & 2
SW4 = 0
XM2 - USM2
SW1-1, 2, 6, 8 = On
SW2-1, 3, 4 = On
JP1 = C & 1
JP2 = 1 & 2
XM2 - USM2.5
SW1-1, 2, 6 = On

Table 2-2, Power Supply Communication Card Settings

NOTE:

Output Current switch settings are determined by the output current capability of the power supply and should
be setup accordingly. See your power supply user manual for setting details.

• USM: N/A

• USM2: SW1-3 = Output #1, SW1-4 = Output #2

• USM2.5: SW1-3 = Output Current Scaling, 15A or 22A

20

745-419-C0-002, Rev. B

2.0 Transponder Installation, continued

2.4 Power Supply Interface Connection

The table below describes the POWER SUPPLY connector. The interface confi g bits (pins
7,8, and 9) allow the transponder to monitor different power supplies, and provide varying
monitoring capabilities.

12
910

Pin Description Type States

1 (GND) Reference Return
2 Inverter Test/Reset Digital Out Low/High
3 RTS Power Analog Out +5V Power to RTS
4 Tamper Status Digital In High/Low
5 Output Fail Alarm Digital In High/Low
6 Equipment Fail Alarm Digital In High/Low
7 Interface Confi g Bit 1 Digital In Open/Ground
8 Interface Confi g Bit 2 Digital In Open/Ground
9 Interface Confi g Bit 3 Digital In Open/Ground
10 Output Current 1 Analog In 0.4VDC/1A AC (AM, XM, XM2)
11 Output Current 2 Analog In 0.4VDC/1A AC (XM2 Only)
12 Standby/Line Fail Analog In High/Low
13 RTS Analog In 2.98VDC @ 25ºC,

14
15 AC Input Voltage Analog In 0.1VAC/1VAC (ZTT option)

16 AC Output Voltage Analog In

AC Input Voltage -or- Analog In 0-2.8Vpk (XM2)

Output Current 1 Analog In 0.1VDC/1A AC (ZTT option)

345678

11 121314

Back of Plug

(Active State in BOLD)

15 16

Scaling

10µV change per ºC

0.5VAC/1VAC (XM, XM2)
1VAC/1VAC (ZTT option)

Table 2-3, Power Supply Interface Connection

21745-419-C0-002, Rev. B

2.0 Transponder Installation, continued

2.4 Power Supply Interface Connection, continued

Connect the Interface cable to the USM, USM2, USM2.5 or RPM card as shown below. Verify
that pin 1 lines up with pin 1 on the connector (furthest from the 2 pin tamper connector).

Tamper

Connector

Pin 1

Pin 1

Tamper

Connector

XM2 Series with USM-2 or USM2.5

Power Supply Interface Cable
From DOCSIS Transponder

Transponder Connector

USM, USM2 or USM2.5 Ci rcuit Board

Side View of Connector

XP Series with USM

Sheet Metal

Pin 1

22

AM Power Supply with RPM Card

Fig 2-5, Power Supply Interface Connections

745-419-C0-002, Rev. B

2.0 Transponder Installation, continued

2.5 Input and Output Connections, XM2, XM, and AM Models

Connect the battery string or Aux Power connector to power the transponder. Connect the
remaining cables as shown below.

NOTE:

Verify the transponder cable modem MAC address is recorded in the CMTS before connecting the RF cable
and powering up the transponder.

1. Generator Interface, Alpha P/N 874-975-20

2. Battery Sense Kit See Sec. 5.0 for list

3. Ignition Battery/
Aux Power Cable,

Alpha P/N 874-976-20

4. Power Supply Interface See Sec. 5.0 for list

5. Battery Sense Kit See Sec. 5.0 for list

6. Craft Port Cable Alpha P/N 875-349-10

7. RTS Cable Alpha P/N 745-178-21

8. Vin Sense Alpha P/N 875-493-21

Surge Suppresser

Ground Block

To Generator Starter Battery

To Auxiliary Power

To Generator

RF

P/N: 745-419-20-XXX
CM: 00:10:3F:XX:XX:XX
S/N: XXXXXX

To Battery String

A and B

1

GEN

1

PWR SPLY

2

BAT A /B

1

1

1

BAT C/D

AUX PWR

LOCAL

3

1

TX

LCL

RDY

RX

8

To Power Supply

5

4

To Battery String

C and D

6

Logic Level

7

To RTS

Converter

Alpha P/N 875-349-10

Fig. 2-6, Input and Output Connections, XM2, XM, and AM Models

CAUTION!
A ground block with surge suppression device is required to protect sensitive electronic components.

23745-419-C0-002, Rev. B

2.0 Transponder Installation, continued

2.6 Input and Output Connections, ZTT and ZTT+ Models

Vout/Iout Sense

Alpha P/N 875-456-10

#4

RTS Cable

Alpha P/N 745-178-21

ZTT/+

Vin

Sense

48V

#3

36V

#2

24V

#1

12V

SPI

Power Supply Interface Cable

Alpha P/N 875-335-22 (ZTT & ZTT/+ post 1998)

Alpha P/N 875-335-23 (ZTT/+ pre 1998)

AUX PWR

R
F

Battery Sense Cable Kits (see Section 5.0)

1

PWR SPLY

Fig. 2-7, Input and Output Connections, ZTT and ZTT+ Models

BAT A /B

1

BAT C/D

LOCAL

11

TX

RX

Tamper Wire Kit

Alpha P/N 875-494-20

24

745-419-C0-002, Rev. B

2.0 Transponder Installation, continued

2.7 Input and Output Connections, Generic Models

Vout/Iout Sense

Alpha P/N 875-456-10

#4

RTS Cable

Alpha P/N 745-178-21

Vin

Sense

48V

#3

36V

#2

24V

#1

12V

SPI

R
F

Battery Sense Cable Kits (see Section 5.0)

Fig. 2-8, Input and Output Connections, Generic Models

1

PWR SPLY

Power Supply Interface Cable

Alpha P/N 875-335-25

AUX PWR

BAT A /B

11

LOCAL

TX

RX

1

BAT C/D

Tamper Wire Kit

Alpha P/N 875-494-20

25745-419-C0-002, Rev. B

2.0 Transponder Installation, continued

2.8 Transponder Placement

Place the transponder in the power supply section of the enclosure away from other heat
sources.

Procedure:

1. Connect all cables to the front of the transponder before mounting.

2. Select an area on the right side of the enclosure if possible (as shown below).

3. Test fi t the transponder to ensure that the cables are long enough.

4. Clean the area to ensure a strong bond with the adhesive.

5. Remove the protective tape over the adhesive and press into place.

Power Supply Compartment

Fig. 2-9, Suggested Transponder Mounting Location

Mount Transponder

in this area

1

1

1

1

1

26

745-419-C0-002, Rev. B

2.0 Transponder Installation, continued

D

a

2.9 Local and RF Connectors

The Local connector allows the technician to communicate with the transponder and power
supply through a PC’s RS-232 serial port.

The RF connector is the primary I/O port to the CMTS.

T A/B

T C/D

AUX PWR

11

LOCAL

TX

RX

LCL

RDY

Fig. 2-10, Local Port Fig. 2-11, RF Connection

2.10 Verify Transponder Operation

During initial transponder power-up, the RDY LED will be on solid.

• Once the reset is complete, the RDY LED will fl ash at a ½ sec ON, ½ sec OFF rate.

• The RX LED will now be ON, fl ickering OFF occasionally, indicating a link with the CMTS
has been established.

RF

Tr

• The TX LED will be off (idle state), but will fl icker on when transmitting data to the CMTS.

27745-419-C0-002, Rev. B

3.0 Network/Element Management Software

3.1 Provisioning the SNMP Manager

The following MIB (Management Information Base) fi les are required for the SNMP Manager
to collect data from the transponders. These fi les can be found on the Society of Cable
Telecommunications (SCTE) web site www.scte.org. These are dependencies between MIB
fi les so they should be compiled in the following order listed below:

ANSI/SCTE 36 2002 (formerly HMS 028), SCTE-ROOT Management Information Base (MIB)
Defi nitions

ANSI/SCTE 37 2003 (formerly HMS 072), Hybrid Fiber/Coax Outside Plant Status Monitoring
SCTE-HMS-ROOTS Management Information Base (MIB) Defi nition

ANSI/SCTE 38-1 2002 (formerly HMS 026), Hybrid Fiber/Coax Outside Plant Status
Monitoring SCTE-HMS-PROPERTY-MIB Management Information Base (MIB) Defi nition

ANSI/SCTE 38-2 2002 (formerly HMS 023), Hybrid Fiber/Coax Outside Plant Status
Monitoring SCTE-HMS-ALARMS-MIB Management Information Base (MIB) Defi nition

ANSI/SCTE 38-3 2002 (formerly HMS 024), Hybrid Fiber/Coax Outside Plant Status
Monitoring SCTE-HMS-COMMON-MIB Management Information Base (MIB) Defi nition

ANSI/SCTE 38-4 2002 (formerly HMS 027), Hybrid Fiber/Coax Outside Plant Status
Monitoring SCTE-HMS-PS-MIB Management Information Base (MIB) Defi nition

ANSI/SCTE 38-6 2003 (formerly HMS 033) Hybrid Fiber/Coax Outside Plant Status
Monitoring - SCTE-HMS-GEN-MIB Management Information Base (MIB) Defi nition

ANSI/SCTE 38-7 2002 (formerly HMS 050), Hybrid Fiber/Coax Outside Plant Status
Monitoring SCTE-HMS-Transponder-Interface-Bus(TIB)-MIB Management Information Base
(MIB) Defi nition

3.2 Transponder Communication with the SNMP Manager

The transponder must fi rst complete its initialization/registration and retrieve the .ini or
cable modem confi g fi le from the TFTP server. The transponder will then send a warm
start trap to the SNMP Manager (specifi ed as the Server IP in the .ini or cable modem
confi g fi le). This trap provides the SNMP Manager with the MAC and IP addresses of the
transponder, and should, depending on the confi guration of the manager software, initiate
monitoring of the power supply system.

28

745-419-C0-002, Rev. B

4.0 Using the Local Port

Local Port Connection Procedure:

1. Connect the RS-232 to logic level converter (Alpha P/N 875-349-10) to the computer and
the transponder.

2. Setup computer to use Hyper-Terminal. Settings are: 19200 baud, 8, N, and 1.

3. Press ENTER to view the display.

4. Press ? to display the menu:

HELP - This help
? - This help
RESET - Reset transponder
STATUS - Transponder confi g and status
ALARMS - Display active alarms
ID - Enter logical ID
PSDATA - Display power supply data
DEVICE - Display device status
PSTEST - Initiate power supply test
GENDATA - Display generator data
GENTEST - Initiate generator test
GENRESET - Reset generator alarms

5. Verify using menu item PSDATA1 that communications between the power supply,
communication card, and the transponder is established and reliable. Verify valid data
is displayed for the addressed power supply.

6. Verify using menu item STATUS that the transponder version data is consistent and
record the address:

MAC Address: 00-10-3F-00-00-0D
Serial No: E1E8E7
Version: 1.0.2.L 1600 950-0315 A 05.00
IP Address: 192.168.1.102
Check code: 0x0000
CommonNEStatus: 0x19

(actual data will be different)

NOTE:

To access additional confi guration options type “gubed” at the command prompt, followed by password
“THEBEST”.

29745-419-C0-002, Rev. B

5.0 Specifi cations

DOCSIS® Network Power Monitoring
General Specifi cations

General
Power Supplies

Supported:
DOCSIS Compat-

ibility:
Monitoring Protocol: SNMPv1
Devices Monitored: Power Supply, Batteries and Generator

RF Transmit / Receive
Tx Frequency

Range:
Output Power: +8 to +58 dBmV
Channel Bandwidth: 6 MHz
Receive Center

Freq Range:
Input Level: -15 to +15 dBmV
Monitored Parameters
Power Supply Data:

Model XM2 XM/AMZTT/

Output Voltage X X X X
Battery Voltage X X X X
Output Current X X X X
AC Line Voltage X X X X
Standby/AC Line

Fail
Equipment/Test Fail X X
Output Fail X X
Enclosure Door X X X X
Test (Control) X X X
Cabinet Temp. X X X X
Notes: 1) This option enables monitoring or basic information

from power supply models not listed.
Number of Battery

Strings:
Battery Data: Individual Battery Voltages
Generator Control: Remote test (start/stop)
Generator Data: (Requires AlphaGen generator system with

ECM status interface)
Major Alarm (Consists of: Low Oil Pressure, Engine Over-temp,

Engine Over-speed, Crank Limit, Over Voltage, Low Fuel, Water
Intrusion, Pad Shear, Gas Hazard, Test Fail)

Minor Alarm (Consists of: Control Fail, Alternator Fail, Low Igni­tion Battery Voltage, Manual Bypass Active, Enclosure Door, DC
Voltage Tolerance, Engine Disabled, Service Required)

Engine Alarm (Consists of: Low Oil Pressure, Engine Over-temp,
Engine Over-speed, Crank Limit, Engine Disabled)

Gas Hazard
Enclosure Alarm
Test Status (pass/fail)
Enclosure Door (open/closed)
Management
NMS/EMS: Cheetah™ DOCSIS® Power Supply Management

Software Standard SNMP Management Tools
HMS MIBs: Power Supply (ANSI/SCTE 38-4) Generator (ANSI/

SCTE 38-6)Transponder (ANSI/SCTE 38-3) Alarm/Trap (ANSI/
SCTE 38-1 and 38-2)

XM2 using USM2 or USM2.5 XM/AM us­ing USM/RPM, ZTT, ZTT+, Generic

Firmware DOCSIS 1.1

(analog status approximates ANSI/SCTE
25-3 2002, formerly HMS 022)

5 to 42 MHz

91 to 857 MHz (Standard, HRC, IRC
channels)

Other1

ZTT+

XXX

1-4 Strings of 24V, 36V or 48V

Hardware
RF Cable Interface: F-connector, female, 75 ohm
Local Interface: RJ-12, RS-232, 19.2kb,N,8,1 Requires

LED Indicators: RF Transmit

Environmental: -40ºC to +65ºC 10% to 90% non-con-

Emissions: EN50022 Class A and FCC Part 15 Class

Warranty: 2 years
Dimensions: 4.6”D x 5.75”W x 1.5”H
Ordering Information
745-419-20 DOCSIS Analog Transponder with VoIP

745-419-22 DOCSIS Analog Transponder, Dual IP

875-335-20 Interface cable for monitoring XM2

875-335-21 Interface cable for monitoring XM/AM

875-335-22 Interface cable for monitoring ZTT or

875-335-23 Interface cable for monitoring ZTT+ (pre-

875-335-24 XM2 with USM2.5 (240VAC input)
875-335-25 Interface kit for monitoring other power

875-349-10 Local port adaptor
Battery Sense Wire Kits:
XP-BSC-24-2-6 1x24V, 6’ 875-401-20
XP-BSC-24-4-6 2x24V, 6’ 875-401-21
XP-BSC-24-2-9 1x24V, 9’ 875-401-22
XP-BSC-24-4-9 2x24V, 9’ 875-401-23
XP-BSC-3-6 1x36V, 6’ 874-842-21
XP-BSC-3-9 1x36V, 9’ 874-842-27
XP-BSC-6-9 2x36V, 9’ 874-842-28
XP-BSC-4-6 1x48V, 6’ 874-841-21
XP-BSC-8-6 2x48V, 6’ 874-841-20
XP-BSC-4-9 1x48V, 9’ 874-841-25
XP-BSC-8-9 2x48V, 9’ 874-841-24
RTS

(Required in cabinets with
tamper using screw terminals)

Tamper Wire Kit 845-494-20
Vin 120V Sense

applications except USM2.5)

Extended wire lengths available. Contact Alpha for ordering
information.

serial port adapter and PC with terminal
emulation software (Hyper-Terminal
recommended)

RF Receive/Link
Transponder Ready

Local Data

densing humidity

A (Installed in power supply enclosure
system)

Test Functions Order power supply
interface cable and battery sense kit
separately.

Order power supply interface cable and
battery sense kit separately.

with USM2 (120/240VAC) or USM2.5
(120VAC) status interface

with USM/RPM status interface

ZTT+ (post 1998)

1998 versions)

supplies not listed herein. Contact Alpha
for details.

745-178-21

(Required for all

875-493-21

30

745-419-C0-002, Rev. B

Alpha Technologies

Power

Copyright © 2006 Alpha Technologies, Inc. All rights reserved. Alpha is a registered trademark of Alpha Technologies. 745-419-C0-002, Rev. B.

Due to continuing product improvements, Alpha reserves the right to change specifi cations without notice.

®

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