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E31N2V1 DOCSIS 3.1 EMTA

User’s Guide

Version 1.0 - 11/2017

Hitron E31N2V1 User’s Guide

About This User’s

Guide

Intended Audience

This manual is intended for people who want to configure the E31N2V1’s features via

its Graphical User Interface (GUI).

How to Use this User’s Guide

This manual contains information on each the E31N2V1’s GUI screens, and

describes how to use its various features.



Use the Introduction on page 9 to see an overview of the topics covered in this

manual.



Use the Table of Contents (page 5), List of Figures (page 7) and List of Tables

(page 8) to quickly find information about a particular GUI screen or topic.



Use the Index (page 45) to find information on a specific keyword.



Use the rest of this User’s Guide to see in-depth descriptions of the E31N2V1’s

features.

Related Documentation



Quick Installation Guide: see this for information on getting your E31N2V1 up

and running right away. It includes information on system requirements,

package contents, the installation procedure, and basic troubleshooting tips.



Online Help: each screen in the E31N2V1’s Graphical User Interface (GUI)

contains additional information about configuring the screen.

Hitron E31N2V1 User’s Guide

Document Conventions

This User’s Guide uses various typographic conventions and styles to indicate

content type:



Bulleted paragraphs are used to list items, and to indicate options.

1 Numbered paragraphs indicate procedural steps.

NOTE: Notes provide additional information on a subject.

Warnings provide information about actions that could harm you or your

device.

Product labels, field labels, field choices, etc. are in bold type. For example:

A mouse click in the Graphical User Interface (GUI) is denoted by a right angle

bracket ( > ). For example:

means that you should click Settings in the GUI, then Advanced settings.

A key stroke is denoted by square brackets and uppercase text. For example:

Customer Support

For technical assistance or other customer support issues, please consult your Hitron

representative.

Select UDP to use the User Datagram Protocol.

Click Settings > Advanced Settings.

Press [ENTER] to continue.

Hitron E31N2V1 User’s Guide

Default Login Details

The E31N2V1’s default IP address and login credentials are as follows. For more

information, see Logging in to the E31N2V1 on page 17.

registered trademarks used are the properties of their respective owners.

DISCLAIMER: The information in

this User’s Guide is accurate at the time of writing.

This User’s Guide is provided “as is” without express or implied warranty of any kind.

Neither Hitron Technologies nor its agents assume any liability for inaccuracies in this

User’s Guide, or losses incurred by use or misuse of the information in this User’s

Guide.

Table 1: Default Credentials

IP Address 192.168.100.1

Username technician

Password PoD Tool

Hitron E31N2V1 User’s Guide

Table of Contents

About This User’s Guide ................................................................. 2

Table of Contents ........................................................................... 5

List of Figures ................................................................................. 7

List of Tables ................................................................................. 8

Introduction ................................................................................... 9

1.1 E31N2V1 Overview ............................................................................. 9

1.1.1 Key Features .............................................................................. 9

1.2 Hardware Connections ...................................................................... 10

1.3 Battery Operations ............................................................................ 13

1.4 LEDs ................................................................................................. 14

1.5 IP Address Setup .............................................................................. 15

1.5.1 Manual IP Address Setup ......................................................... 16

1.6 Logging in to the E31N2V1 ............................................................... 17

1.7 GUI Overview .................................................................................... 17

1.8 Resetting the E31N2V1 ..................................................................... 18

Status ........................................................................................... 19

1.1 Status Overview ................................................................................ 19

1.1.1 DOCSIS .................................................................................... 19

1.1.2 IP Addresses and Subnets ....................................................... 20

1.1.2.1 IP Address Format ........................................................... 20

1.1.2.2 IP Address Assignment .................................................... 20

1.1.2.3 Subnets ............................................................................ 21

1.1.3 DHCP ........................................................................................ 22

1.1.4 DHCP Lease ............................................................................. 23

1.1.5 MAC Addresses ........................................................................ 23

1.1.6 Downstream and Upstream Transmissions .............................. 24

Hitron E31N2V1 User’s Guide

1.1.7 Cable Frequencies .................................................................... 24

1.1.8 Modulation ................................................................................ 24

1.1.9 TDMA, FDMA and SCDMA ...................................................... 25

1.1.10 OFDM ..................................................................................... 25

1.1.11 FFT ......................................................................................... 25

1.1.12 OFDMA ................................................................................... 26

1.2 The Status: System Information Screen ........................................... 26

1.3 The Status: DOCSIS Provisioning Screen ........................................ 27

1.4 The Status: DOCSIS WAN Screen ................................................... 28

1.5 The Status: DOCSIS Event Screen .................................................. 33

1.6 The Status: LAN Port Status Screen ................................................. 35

1.7 The Status: Spectrum Screen ........................................................... 36

1.7.1 The Spectrum Scan Screen ...................................................... 36

1.7.2 The Spectrum RealTime Monitor Screen ................................. 37

1.7.3 The Spectrum Constellation Screen ......................................... 38

1.8 The Status: MTA Line Status Screen ................................................ 39

1.9 The Status: MTA DHCP Screen ........................................................ 40

Troubleshooting ........................................................................... 43

Index ............................................................................................ 45

Hitron E31N2V1 User’s Guide

List of Figures

Figure 1: Application Overview .............................................................................9

Figure 2: Hardware Connections ........................................................................11

Figure 3: Power Adaptor .....................................................................................13

Figure 4: LEDs ....................................................................................................14

Figure 5: Login ....................................................................................................17

Figure 6: GUI Overview ......................................................................................18

Figure 1: The Status: System Information Screen ..............................................26

Figure 2: The Status: DOCSIS Provisioning Screen ...........................................27

Figure 3: The Status: DOCSIS WAN Screen ......................................................29

Figure 4: The Status: DOCSIS Event Screen .....................................................34

Figure 5: The Status: Port Status Screen ...........................................................35

Figure 6: The Status: Spectrum Screen ..............................................................36

Figure 7: The Spectrum Scan Screen .................................................................37

Figure 8: The Spectrum RealTime Monitor Screen ............................................38

Figure 9: The Spectrum Constellation Screen ....................................................39

Figure 10: The Status: MTA Line Status Screen ................................................40

Figure 11: The Status: MTA DHCP Screen ........................................................41

Hitron E31N2V1 User’s Guide

List of Tables

Table 1: Default Credentials ................................................................................4

Table 2: Hardware Connections ........................................................................11

Table 3: LEDs ....................................................................................................14

Table 4: GUI Overview .......................................................................................18

Table 1: Private IP Address Ranges ..................................................................21

Table 2: IP Address: Decimal and Binary ..........................................................21

Table 3: Subnet Mask: Decimal and Binary .......................................................22

Table 4: The Status: System Information Screen ..............................................26

Table 5: The Status: DOCSIS WAN Screen ......................................................30

Table 6: The Status: DOCSIS Event Screen .....................................................34

Table 7: The Status: Port Status Screen ...........................................................35

Table 8: The Status: Spectrum Screen ..............................................................36

Table 9: The Spectrum Scan Screen .................................................................37

Table 10: The Spectrum RealTime Monitor Screen ...........................................38

Table 11: The Spectrum Constellation Screen ..................................................39

Table 12: The Status: MTA Line Status Screen .................................................40

Table 13: The Status: MTA DHCP Screen ........................................................41

Hitron E31N2V1 User’s Guide

Introduction

This chapter introduces the E31N2V1 and its GUI (Graphical User Interface).

1.1 E31N2V1 Overview

Your E31N2V1 is a DOCSIS cable modem, router and embedded Multimedia

Terminal Adapter (eMTA) that allows you to connect your cabled Ethernet and analog

telephones to one another and to the Internet via your building’s cable connection.

Figure 1: Application Overview

1.1.1 Key Features

The E31N2V1 provides:



DOCSIS 3.1 certified.



Integrated DLNA media server with support for video, audio and image serving.

Hitron E31N2V1 User’s Guide



Two RJ11 FXS (Foreign Exchange Station) ports to connect analog telephones

for use with VoIP services.



Extensive operator control via configuration file and SNMP.



Well-defined LEDs clearly display device and network status.



TR-069 and HNAP for easy setup and remote management.



Enhanced management and stability for low total cost of ownership.

1.2 Hardware Connections

This section describes the E31N2V1’s physical ports and buttons.

Hitron E31N2V1 User’s Guide

Figure 2: Hardware Connections

Table 2: Hardware Connections

RESET Use this button to reboot or reset your E31N2V1 to its

factory default settings.

To reboot the E31N2V1, press the button and hold it for

four seconds, then release. The E31N2V1 restarts,

using your existing settings.

To reset the E31N2V1, press the button and hold it for

ten seconds or more, then release. All user-configured

settings are deleted, and the E31N2V1 restarts using its

factory default settings.

TEL 1 Use these ports to connect your analog phones for VoIP

services, using cables with RJ11 connectors.

TEL 2

CABLE Use this to connect to the Internet via an F-type RF

cable.

Hitron E31N2V1 User’s Guide

ETHERNET Use this port to connect your computer and/orother

network devices, using a Category 5 or 6 Ethernet cable

with RJ45 connectors.

The LED on the left displays the speed of the connection

on the relevant port:



When the LED on the left is off, the connection is at

10Mbps (Megabits per second).



When the LED on the left glows green, the

connection is at 100Mbps.



When the LED on the left glows amber, the

connection is at 1Gbps (Gigabits per second).

The LED on the right displays whether or not there is

activity on the relevant port:



When the LED on the right is blinking, there is

activity on the port.



When the LED on the right is off, there is no activity

on the port.

Table 2: Hardware Connections

Hitron E31N2V1 User’s Guide

1.3 Battery Operations

The E31N2V1 has an optional battery backup unit (BBU) enabling you to connect a

lithium-ion battery that provides emergency power to the device in the event of a

power outage. If you ordered this option, connect the battery by following the Quick

Installation Guide that accompanied it.

NOTE: The E31N2V1 battery is intended for use as a backup to the main power

source, not as a replacement for it. For optimal power performance you

should use the battery in conjunction with the main power source.

POWER Use this to connect to the 12v/1.5A power adapter that

came with your E31N2V1.

NEVER use another power adapter with your

E31N2V1. Doing so could harm your E31N2V1.

Figure 3: Power Adaptor

BATTERY Use this port to connect the optional battery back up unit

(see Battery Operations on page 13).

Table 2: Hardware Connections

Hitron E31N2V1 User’s Guide

1.4 LEDs

This section describes the E31N2V1’s LEDs (lights).

Figure 4: LEDs

Table 3: LEDs

LED STATUS DESCRIPTION

Power Off The E31N2V1 is not receiving power.

On The E31N2V1 is receiving power, has completed

powering-up, and is ready to use.

Blinking The E31N2V1 is receiving power and is powering-

up.

Online Blinking The E31N2V1’s cable modem is registering with the

service provider’s CMTS.

On The E31N2V1’s cable modem has successfully

registered with the service provider and is ready for

data transfer (see DOCSIS on page 19).

Off The E31N2V1’s cable modem is offline.

Hitron E31N2V1 User’s Guide

1.5 IP Address Setup

Before you log into the E31N2V1’s GUI, your computer’s IP address must be in the

same subnet as the E31N2V1. This allows your computer to communicate with the

E31N2V1.

If your computer is configured to get an IP address automatically, or if you are not

sure, try to log in to the E31N2V1 (see GUI Overview on page 17).



If the login screen displays, your computer is already configured correctly.



If the login screen does not display, your computer is not configured correctly.

Follow the procedure in Manual IP Address Setup on page 16 and set your

computer to get an IP address automatically. Try to log in again. If you cannot

address as shown. Try to log in again.

NOTE: If you still cannot see the login screen, your E31N2V1’s IP settings may have

been changed from their defaults. If you do not know the E31N2V1’s new

address, you should return it to its factory defaults. See Resetting the

E31N2V1 on page 18. Bear in mind that ALL user-configured settings are

lost.

Voice Off No telephone is connected to either the TEL 1 or

TEL 2 port, or both, or voice service has not been

enabled by your service provider.

Blue, steady A telephone is connected to either the TEL 1 or

TEL 2 port, or both, one or both of which are off-

hook.

Blue, blinking A telephone is connected to either the TEL 1 or

TEL 2 ports, or both, both of which are on-hook.

Battery Off No battery is connected to the E31N2V1.

Blue, blinking A battery is connected to the E31N2V1, and is

charging (with more than 10% of its charge

remaining).

Red, blinking A battery is connected to the E31N2V1, and is

charging (with 10% or less of its charge remaining).

Table 3: LEDs

Hitron E31N2V1 User’s Guide

1.5.1 Manual IP Address Setup

By default, your E31N2V1’s local IP address is 192.168.100.1. If your E31N2V1 is

using the default IP address, you should set your computer’s IP address to be

between 192.168.100.2 and 192.168.100.254.

Take the following steps to manually set up your computer’s IP address to connect to

the E31N2V1:

NOTE: This example uses Windows 7; the procedure for your operating system may

be different.

1 Click the Start Orb, then click Control Panel.

2 In the window that displays, double-click Network And Sharing Center.

3 In the left-hand panel, click Change Adapter Settings.

4 Right-click your network connection (usually Local Area Connection) and click

Properties.

5 In the Networking tab’s This connection uses the following items list, scroll

down and select Internet Protocol (TCP/IPv4). Click Properties.

6 You can get an IP address automatically, or specify one manually:



If your network has an active DHCP server, select Get an IP address

automatically.



If your network does not have an active DHCP server, select Use the

following IP address. In the IP address field, enter a value between

192.168.100.2 and 192.168.100.254 (default). In the Subnet mask field,

enter 255.255.255.0 (default). In the Default Gateway field, enter

192.168.100.1 (default).

NOTE: If your E31N2V1 is not using the default IP address, enter an IP address and

subnet mask that places your computer in the same subnet as the E31N2V1.

7 Click OK. The Internet Protocol (TCP/IP) window closes. In the Local Area

Connection Properties window, click Close.

Your computer now obtains an IP address from the E31N2V1, or uses the IP address

that you specified, and can communicate with the E31N2V1.

Hitron E31N2V1 User’s Guide

1.6 Logging in to the E31N2V1

Take the following steps to log into the E31N2V1’s GUI.

1 Open a browser window.

2 Enter the E31N2V1’s IP address (default 192.168.100.1) in the URL bar. The

Figure 5: Login

3 Enter the Username and Password. The default user name is technician and

the default password is PoD Tool.

NOTE: The Username and Password are case-sensitive; “password” is not the same

as “PASSWORD”.

4 If you want to use a language other than English, select it from the Language

dropdown.

5 If you want to log in without entering the password in future, select Remember

me on this computer. Only select this on your own, private computer (not

public computers, or those easily-accessible by others).

6 Click Login. The System Information screen displays (see The Status: System

Information Screen on page 26).

1.7 GUI Overview

This section describes the E31N2V1’s GUI.

Hitron E31N2V1 User’s Guide

Figure 6: GUI Overview

1.8 Resetting the E31N2V1

When you reset the E31N2V1 to its factory defaults, all user-configured settings are

lost, and the E31N2V1 is returned to its initial configuration state.

To reset the E31N2V1, press and hold the RESET button for ten seconds. The

E31N2V1 turns off and on again, using its factory default settings.

NOTE: Depending on your E31N2V1’s previous configuration, you may need to re-

configure your computer’s IP settings; see IP Address Setup on page 15.

Table 4: GUI Overview

Primary

Navigation Bar

Use this section to move from one part of the GUI to another.

Main Window Use this section to read information about your E31N2V1’s

configuration, and make configuration changes.

Hitron E31N2V1 User’s Guide

Status

This chapter describes the screens that display when you click Status in the toolbar.

It contains the following sections:



Status Overview on page 19



The Status: System Information Screen on page 26



The Status: DOCSIS Provisioning Screen on page 27



The Status: DOCSIS WAN Screen on page 28



The Status: DOCSIS Event Screen on page 33



The Status: LAN Port Status Screen on page 35



The Status: Spectrum Screen on page 36



The Status: MTA Line Status Screen on page 39



The Status: MTA DHCP Screen on page 40

1.1 Status Overview

This section describes some of the concepts related to the Status screens.

1.1.1 DOCSIS

The Data Over Cable Service Interface Specification (DOCSIS) is a

telecommunications standard that defines the provision of data services) Internet

access) over a traditional cable TV (CATV) network.

Your E31N2V1 supports DOCSIS version 3.0.

Hitron E31N2V1 User’s Guide

1.1.2 IP Addresses and Subnets

Every computer on the Internet must have a unique Internet Protocol (IP) address.

The IP address works much like a street address, in that it identifies a specific

location to which information is transmitted. No two computers on a network can have

the same IP address.

1.1.2.1 IP Address Format

IP addresses consist of four octets (8-bit numerical values) and are usually

represented in decimal notation, for example 192.168.1.1. In decimal notation, this

means that each octet has a minimum value of 0 and a maximum value of 255.

An IP address carries two basic pieces of information: the “network number” (the

address of the network as a whole, analogous to a street name) and the “host ID”

(analogous to a house number) which identifies the specific computer (or other

network device).

1.1.2.2 IP Address Assignment

IP addresses can come from three places:



The Internet Assigned Numbers Agency (IANA)



Your Internet Service Provider



You (or your network devices)

IANA is responsible for IP address allocation on a global scale, and your ISP assigns

IP addresses to its customers. You should never attempt to define your own IP

addresses on a public network, but you are free to do so on a private network.

In the case of the E31N2V1:



The public network (Wide Area Network or WAN) is the link between the cable

connector and your Internet Service Provider. Your E31N2V1’s IP address on

this network is assigned by your service provider.

Hitron E31N2V1 User’s Guide



The private network is your Local Area Network (LAN) and Wireless Local Area

Network (WLAN), if featured and enabled. You are free to assign IP addresses

to computers on the LAN and WLAN manually, or to allow the E31N2V1 to

assign them automatically via DHCP (Dynamic Host Configuration Protocol).

IANA has reserved the following blocks of IP addresses to be used for private

networks only:

If you assign addresses manually, they must be within the E31N2V1’s LAN

subnet.

1.1.2.3 Subnets

A subnet (short for sub-network) is, as the name suggests, a separate section of a

network, distinct from the main network of which it is a part. A subnet may contain all

of the computers at one corporate local office, for example, while the main network

includes several offices.

In order to define the extent of a subnet, and to differentiate it from the main network,

a subnet mask is used. This “masks” the part of the IP address that refers to the main

network, leaving the part of the IP address that refers to the sub-network.

Each subnet mask has 32 bits (binary digits), as does each IP address:



A binary value of 1 in the subnet mask indicates that the corresponding bit in the

IP address is part of the main network.



A binary value of 0 in the subnet mask indicates that the corresponding bit in the

IP address is part of the sub-network.

For example, the following table shows the IP address of a computer (192.168.1.1)

expressed in decimal and binary (each cell in the table indicates one octet):

Table 1: Private IP Address Ranges

FROM... ...TO

10.0.0.0 10.255.255.255

172.16.0.0 172.31.255.255

192.168.0.0 192.168.255.255

Table 2: IP Address: Decimal and Binary

192 168 0 1

11000000 10101000 00000000 00000001

Hitron E31N2V1 User’s Guide

The following table shows a subnet mask that “masks” the first twenty-four bits of the

IP address, in both its decimal and binary notation.

This shows that in this subnet, the first three octets (192.168.1, in the example IP

address) define the main network, and the final octet (1, in the example IP address)

defines the computer’s address on the subnet.

The decimal and binary notations give us the two common ways to write a subnet

mask:



Decimal: the subnet mask is written in the same fashion as the IP address:

255.255.255.0, for example.



Binary: the subnet mask is indicated after the IP address (preceded by a forward

slash), specifying the number of binary digits that it masks. The subnet mask

255.255.255.0 masks the first twenty-four bits of the IP address, so it would be

written as follows: 192.168.1.1/24.

1.1.3 DHCP

The Dynamic Host Configuration Protocol, or DHCP, defines the process by which IP

addresses can be assigned to computers and other networking devices

automatically, from another device on the network. This device is known as a DHCP

server, and provides addresses to all the DHCP client devices.

In order to receive an IP address via DHCP, a computer must first request one from

the DHCP server (this is a broadcast request, meaning that it is sent out to the whole

network, rather than just one IP address). The DHCP server hears the requests, and

responds by assigning an IP address to the computer that requested it.

If a computer is not configured to request an IP address via DHCP, you must

configure an IP address manually if you want to access other computers and devices

on the network. See

IP Address Setup on page 15 for more information.

By default, the E31N2V1 is a DHCP client on the WAN (the CATV connection). It

broadcasts an IP address over the cable network, and receives one from the service

provider. By default, the E31N2V1 is a DHCP server on the LAN; it provides IP

addresses to computers on the LAN which request them.

Table 3: Subnet Mask: Decimal and Binary

255 255 255 0

11111111 11111111 11111111 00000000

Hitron E31N2V1 User’s Guide

1.1.4 DHCP Lease

“DHCP lease” refers to the length of time for which a DHCP server allows a DHCP

client to use an IP address. Usually, a DHCP client will request a DHCP lease

renewal before the lease time is up, and can continue to use the IP address for an

additional period. However, if the client does not request a renewal, the DHCP server

stops allowing the client to use the IP address.

This is done to prevent IP addresses from being used up by computers that no longer

require them, since the pool of available IP addresses is finite.

1.1.5 MAC Addresses

Every network device possesses a Media Access Control (MAC) address. This is a

unique alphanumeric code, given to the device at the factory, which in most cases

cannot be changed (although some devices are capable of “MAC spoofing”, where

they impersonate another device’s MAC address).

MAC addresses are the most reliable way of identifying network devices, since IP

addresses tend to change over time (whether manually altered, or updated via

DHCP).

Each MAC address displays as six groups of two hexadecimal digits separated by

colons (or, occasionally, dashes) for example 00:AA:FF:1A:B5:74.

NOTE: Each group of two hexadecimal digits is known as an “octet”, since it

represents eight bits.

Bear in mind that a MAC address does not precisely represent a computer on your

network (or elsewhere), it represents a network device, which may be part of a

computer (or other device). For example, if a single computer has an Ethernet card

(to connect to your network via a wired interface) and also has a wireless card (to

connect to your network over the wireless interface) the MAC addresses of the two

cards will be different. In the case of the E31N2V1, each internal module (cable

modem module, Ethernet module, etc.) possesses its own MAC address.

Hitron E31N2V1 User’s Guide

1.1.6 Downstream and Upstream Transmissions

The terms “downstream” and “upstream” refer to data traffic flows, and indicate the

direction in which the traffic is traveling. “Downstream” refers to traffic from the

service provider to the E31N2V1, and “upstream” refers to traffic from the E31N2V1

to the service provider.

1.1.7 Cable Frequencies

Just like radio transmissions, data transmissions over the cable network must exist

on different frequencies in order to avoid interference between signals.

The data traffic band is separate from the TV band, and each data channel is

separate from other data channels.

1.1.8 Modulation

Transmissions over the cable network are based on a strong, high frequency periodic

waveform known as the “carrier wave.” This carrier wave is so called because it

“carries” the data signal. The data signal itself is defined by variations in the carrier

wave. The process of varying the carrier wave (in order to carry data signal

information) is known as “modulation.” The data signal is thus known as the

“modulating signal.”

Cable transmissions use a variety of methods to perform modulation (and the

“decoding” of the received signal, or “demodulation”). The modulation methods

defined in DOCSIS 3 are as follows:



QPSK: Quadrature Phase-Shift Keying



QAM: Quadrature Amplitude Modulation



QAM TCM: Trellis modulated Quadrature Amplitude Modulation

In many cases, a number precedes the modulation type (for example 16 QAM). This

number refers to the complexity of modulation. The higher the number, the more data

can be encoded in each symbol.

NOTE: In modulated signals, each distinct modulated character (for example, each

audible tone produced by a modem for transmission over telephone lines) is

known as a symbol.

Hitron E31N2V1 User’s Guide

Since more information can be represented by a single character, a higher number

indicates a higher data transfer rate.

1.1.9 TDMA, FDMA and SCDMA

Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA)

and Synchronous Code Division Multiple Access (SCDMA) are channel access

methods that allow multiple users to share the same frequency channel.



TDMA allows multiple users to share the same frequency channel by splitting

transmissions by time. Each user is allocated a number of time slots, and

transmits during those time slots.



FDMA allows multiple users to share the same frequency channel by assigning a

frequency band within the existing channel to each user.



SCDMA allows multiple users to share the same frequency channel by assigning

a unique orthogonal code to each user.

1.1.10 OFDM

Orthogonal Frequency-Division Multiplexing (OFDM) is a physical-layer data

encoding method for transmitting and receiving data on Radio Frequency (RF)

media, such as the E31N2V1’s cable connection.

OFDM takes a single wide-band signal and separates it into multiple simultaneous

subcarriers across the available RF spectrum, separated by the minimum frequency

necessary to ensure non-interference among sub-carriers. “Orthogonal”, in this

usage, refers to this non-interfering quality of the technique.

The primary advantage of OFDM is that a signal encoded using the method can

withstand suboptimal conditions on the RF medium. Depending on its

implementation, OFDM can also enable faster signal throughput.

1.1.11 FFT

The Fast Fourier Transform (FFT) is an algorithm for rapidly implementing Fourier

analysis of a data stream, used by modulation methods such as OFDM. Fourier

analysis is a mathematical technique that enables the representation of data using

simpler trigonometric functions.

Hitron E31N2V1 User’s Guide

In this implementation, Fourier analysis is used to construct the frequency data for

transmission, and to deconstruct received frequency data.

1.1.12 OFDMA

Orthogonal Frequency-Division Multiple Access (OFDMA) is a multiuser adaptation

of OFDM (see OFDM on page 25) that permits simultaneous use by multiple users by

assigning a specific group of OFDM subcarriers to each individual user.

1.2 The Status: System Information Screen

Use this screen to view information about the E31N2V1’s system and statistics.

Click Status > System Information. The following screen displays.

Figure 1: The Status: System Information Screen

The following table describes the labels in this screen.

Table 4: The Status: System Information Screen

HW Version This displays the version number of the E31N2V1’s

physical hardware.

SW Version This displays the version number of the software that

controls the E31N2V1.

Hitron E31N2V1 User’s Guide

1.3 The Status: DOCSIS Provisioning Screen

This screen displays the steps successfully taken to connect to the Internet over the

Cable connection.

Use this screen for troubleshooting purposes to ensure that the E31N2V1 has

successfully connected to the Internet; if an error has occurred you can identify the

stage at which the failure occurred.Click Status > DOCSIS Provisioning. The

following screen displays.

Figure 2: The Status: DOCSIS Provisioning Screen

For each step:

Serial Number This displays the uniquely identifying number of the

E31N2V1. If you contact your cable service provider for

assistance, they may ask you for this number.

RF MAC This displays the Media Access Control (MAC) address

of the E31N2V1’s radio frequency (RF) module. This is

the module that connects to the Internet through the

Cable connection.

System Time This displays the current date and time.

System Up Time This displays the amount of time that has elapsed since

the E31N2V1 was last restarted.

Table 4: The Status: System Information Screen (continued)

Hitron E31N2V1 User’s Guide



Process displays when the E31N2V1 is attempting to complete a connection

step.



Success displays when the E31N2V1 has completed a connection step.



Disable displays when the relevant feature has been turned off.

1.4 The Status: DOCSIS WAN Screen

Use this screen to discover information about:



The nature of the upstream and downstream connection between the E31N2V1

and the device to which it is connected through the CABLE interface.



IP details of the E31N2V1’s WAN connection.

Click Status > DOCSIS WAN. The following screen displays.

Hitron E31N2V1 User’s Guide

Figure 3: The Status: DOCSIS WAN Screen

Hitron E31N2V1 User’s Guide

The following table describes the labels in this screen.

Table 5: The Status: DOCSIS WAN Screen

DOCSIS Overview

Network Access This displays whether or not your service provider

allows you to access the Internet over the CABLE

connection.



Permitted displays if you can access the Internet.



Denied displays if you cannot access the Internet.

IP Address This displays the E31N2V1’s WAN IP address. This IP

address is automatically assigned to the E31N2V1

Subnet Mask This displays the E31N2V1’s WAN subnet mask.

Gateway IP This displays the IP address of the device to which the

E31N2V1 is connected on the WAN.

DHCP Lease Time This displays the time that elapses before your device’s

IP address lease expires, and a new IP address is

assigned to it by the DHCP server.

Downstream Overview

NOTE: The downstream signal is the signal transmitted to the E31N2V1.

Port ID This displays the ID number of the downstream

connection’s port.

Frequency (Hz) This displays the actual frequency in Hertz (Hz) of each

downstream data channel to which the E31N2V1 is

connected.

Modulation This displays the type of modulation that each

downstream channel uses.

Signal Strength

(dBmV)

This displays the power of the signal of each

downstream data channel to which the E31N2V1 is

connected, in dBmV (decibels above/below 1 millivolt).

Signal Noise Ratio

(dB)

This displays the Signal to Noise Ratio (SNR) of each

downstream data channel to which the E31N2V1 is

connected, in dB (decibels).

Octets This displays the total number of octets received.

Correcteds This displays the number of blocks received that

required correction due to corruption, and were

corrected.

Hitron E31N2V1 User’s Guide

Uncorrectables This displays the number of blocks received that

required correction due to corruption, but were unable to

be connected.

Channel ID This displays the ID number of each channel on which

the downstream signal is transmitted.

Reset FEC Counters Click this to return the Forward Error Connection (FEC)

columns (Correcteds and Uncorrectables).

OFDM Downstream Overview

Receiver This displays the index number of the OFDM receiver

(see OFDM on page 25).

FFT Type This displays the type of Fast Fourier Transform in use

on the relevant OFDM receiver (see FFT on page 25).

Subcarr 0 Frequency

(Hz)

Each OFDM signal consists of multiple subcarriers.This

displays the frequency, in Hertz, of the first OFDM

subcarrier on the relevant receiver.

PLC Locked This displays whether or not the relevant OFDM

connection’s physical link channel (PLC) data is locked.

The PLC tells the E31N2V1 how to decode the OFDM

signal, and what power level to use. Once the E31N2V1

receives a PLC without uncorrectable errors, the PLC is

locked and subsequent communication can continue.

NCP Locked This displays whether or not the relevant OFDM

connection’s next codeword pointer (NCP) data is

locked. The NCP tells the E31N2V1 which codewords

are to be used for OFDM communication, and which

profile to use for each codeword. Once the E31N2V1

receives an NCP without uncorrectable errors, the NCP

is locked and subsequent communication can continue.

MDC1 Locked This displays whether or not the relevant OFDM

connection’s Multipath Delay Commutator (MDC) data

is locked. This provides information about the method of

Fast Fourier Transform (FFT) to be used on the OFDM

connection. Once the E31N2V1 receives an MDC1

without errors, the MDC1 is locked and subsequent

communication can continue.

PLC Power (dBmV) This displays the power level the E31N2V1 has been

instructed to use on the relevant OFDM connection by

the physical link channel (PLC) data, in dBmV (decibels

above/below 1 millivolt).

Table 5: The Status: DOCSIS WAN Screen (continued)

Hitron E31N2V1 User’s Guide

Upstream Overview

NOTE: The upstream signal is the signal transmitted from the E31N2V1.

Port ID This displays the ID number of the upstream

connection’s port.

Frequency (Hz) This displays the actual frequency in Hertz (Hz) of each

upstream data channel to which the E31N2V1 is

connected.

Bandwidth This displays the maximum available bandwidth on the

relevant channel.

Modulation Type This displays the type of modulation that each upstream

channel uses.

DOCSIS Mode This displays the DOCSIS communications standard

that each upstream channel uses.

Signal Strength

(dBmV)

This displays the power of the signal of each upstream

data channel to which the E31N2V1 is connected, in

dBmV (decibels above/below 1 millivolt).

Channel ID This displays the ID number of each channel on which

the upstream signal is transmitted.

OFDMA Upstream Overview

Channel Index This displays the index number of the OFDM/OFDMA

channel.

State This displays whether or not the relevant channel is

currently in use, or not.



ENABLED displays when the channel is in use.



DISABLED displays when the channel is not in

use.

Lin Digital Att. This displays the digital attenuation, or signal loss, of

the transmission medium on which the channel’s signal

is carried, in decibels (dB).

Digital Att. This displays the measured digital attenuation of the

channel’s signal, in decibels (dB). Digital attenuation is

affected by the frequency of the signal; a higher-

frequency signal will suffer more attenuation than a

lower-frequency signal.

Table 5: The Status: DOCSIS WAN Screen (continued)

Hitron E31N2V1 User’s Guide

1.5 The Status: DOCSIS Event Screen

Use this screen to view information about local WAN activity events.

Click Status > DOCSIS Event. The following screen displays.

BW (sc’s*fft) This displays the bandwidth of the relevant channel,

expressed as the number of subchannels multiplied by

the channel’s Fast Fourier Transform size, in megahertz

(MHz).

Report Power This displays the reported power of the relevant

channel, in quarter-decibels above/below 1 millivolt

(quarter-dBmV).

Report Power 1_6 This displays the target power (P1.6r_n, or power

spectral density in 1.6MHz) of the relevant channel, in

quarter-decibels above/below 1 millivolt (quarter-

dBmV).

FFT Size This displays the type of Fast Fourier Transform in use

on the relevant channel.

Table 5: The Status: DOCSIS WAN Screen (continued)

Hitron E31N2V1 User’s Guide

Figure 4: The Status: DOCSIS Event Screen

The following table describes the labels in this screen.

Table 6: The Status: DOCSIS Event Screen

No This displays the arbitrary, incremental index number

assigned to the event.

Time This displays the date and time at which the event

occurred.

Type This displays the nature of the event.

Hitron E31N2V1 User’s Guide

1.6 The Status: LAN Port Status Screen

Use this screen to see information about the data rate and flow of the E31N2V1’s

LAN port.

Click Status > LAN Port Status. The following screen displays.

Figure 5: The Status: Port Status Screen

The following table describes the labels in this screen.

Priority This displays the severity of the event.

Event This displays a description of the event.

Clear Click this to remove all DOCSIS event logs from the

system.

Table 7: The Status: Port Status Screen

Port This displays the physical LAN port number.

Status This displays whether or not there is a functioning

device connected to the port (Up) or not (Down).

Speed This displays the maximum achievable data speed in

megabits per second (Mbps).

Duplex



This displays Full when data can flow between the

E31N2V1 and the connected device in both

directions simultaneously.



This displays Half when data can flow between the

E31N2V1 and the connected device in only one

direction at a time.

Table 6: The Status: DOCSIS Event Screen (continued)

Hitron E31N2V1 User’s Guide

1.7 The Status: Spectrum Screen

Use this screen to examine the radio frequency (RF) spectrum on the cable

connection between the E31N2V1 and the Internet.

Click Status > Spectrum. The following screen displays.

Figure 6: The Status: Spectrum Screen

The following table describes the labels in this screen.

1.7.1 The Spectrum Scan Screen

Use this to perform a scan of RF communications, and view results as a graph of

power against frequency.

Click the Scan tab in the System: Spectrum screen. The following screen displays.

Table 8: The Status: Spectrum Screen

Scan Use this to perform a scan of the RF signal spectrum

and view results. See The Spectrum Scan Screen on

page 36.

RealTime Monitor Use this to observe fluctuations in the RF signal

spectrum as they happen. See The Spectrum RealTime

Monitor Screen on page 37.

Constellation Use this to view a representation of the digitally-

modulated RF signal. See The Spectrum Constellation

Screen on page 38.

Hitron E31N2V1 User’s Guide

Figure 7: The Spectrum Scan Screen

The following table describes the labels in this screen.

1.7.2 The Spectrum RealTime Monitor Screen

Use this to observe fluctuations in the RF signal spectrum as they happen.

Click the RealTime Monitor tab in the System: Spectrum screen. The following

screen displays.

Table 9: The Spectrum Scan Screen

Center Enter the center frequency for the scan, in megahertz

(MHz).

Scan Enter the bandwidth of the scan, in megaherts. For

example, if you set a Center frequency of 645MHz and

a Scan bandwidth of 15 MHz, the system will scan the

band 637.5~652.5 MHz.

Apply Click this to start the scan.

Power (dBmV) This displays the signal power in decibels relative to one

millivolt.

Frequency (MHZ) This displays the signal frequency in megahertz.

Hitron E31N2V1 User’s Guide

Figure 8: The Spectrum RealTime Monitor Screen

The following table describes the labels in this screen.

1.7.3 The Spectrum Constellation Screen

Use this to view a representation of the digitally-modulated RF signal, depicted as a

two-dimensional scatter diagram. You can use this diagram to troubleshoot RF

communication issues by identifying signal interference and/or distortion.

Click the Constellation tab in the System: Spectrum screen. The following screen

displays.

Table 10: The Spectrum RealTime Monitor Screen

Start Click this to begin monitoring.

Stop Click this to end monitoring.

(Index) The graph displays a differently-colored line for each of

the frequencies on which the E31N2V1 is

communicating on the RF network. The index lets you

know which color line represents which frequency.

Power (dBmV) This displays the power of each channel, in decibels

relative to one millivolt.

Time This displays the system time at which the power

measurement was taken.

Hitron E31N2V1 User’s Guide

Figure 9: The Spectrum Constellation Screen

The following table describes the labels in this screen.

1.8 The Status: MTA Line Status Screen

Use this screen to see general information about the E31N2V1’s embedded

Multimedia Terminal Adapter module.

Table 11: The Spectrum Constellation Screen

Frequency Select the frequency of the RF signal you want to

monitor.

Start Click this to begin monitoring the selected Frequency.

Stop Click this to end monitoring.

Receiver Information

Frequency This displays the frequency of the signal currently being

monitored.

Modulation This displays the type of modulation being used on the

monitored signal.

Bandwidth This displays the channel width of the signal currently

being monitored.

Power This displays the measured power of the signal currently

being monitored, in decibels relative to one millivolt.

MER This displays the Modulation Error Ratio.

Quadrature This diagram displays the measured spectrum

constellation.

In-Phase

Hitron E31N2V1 User’s Guide

Click Status > MTA Line Status. The following screen displays.

Figure 10: The Status: MTA Line Status Screen

The following table describes the labels in this screen.

1.9 The Status: MTA DHCP Screen

Use this screen to see information about the MTA module’s connections to the

Table 12: The Status: MTA Line Status Screen

Startup Procedure

Telephony DHCP This field displays the status of the remote telephony

DHCP (Direct Host Configuration Protocol) server.

Telephony Security This displays the type of security used for voice calls

through the E31N2V1.

Telephony TFTP This field displays the status of the remote telephony

TFTP (Trivial File Transfer Protocol) server.

Telephony

Registration

Complete

This field displays the overall status of voice call

registration, and displays SUCCESS once the

registration process has concluded.

Line Status

Line 1 These fields display the current status of each phone

connected to the E31N2V1.

Line 2

Hitron E31N2V1 User’s Guide

service provider.

Click Status > MTA DHCP. The following screen displays.

Figure 11: The Status: MTA DHCP Screen

The following table describes the labels in this screen.

Table 13: The Status: MTA DHCP Screen

Network Address Information

MTA MAC Address This field displays the Media Access Control

(MAC)address of the Media Terminal Adapter (MTA)

module

MTA IP Address This field displays the IP address of the MTA module.

Lease Parameters

Hitron E31N2V1 User’s Guide

FQDN This displays the Fully-Qualified Domain Name of the

DHCP server from which the MTA module derives its IP

address and subnet mask.

IP Address / Submask This displays the MTA module’s IP address and subnet

mask, derived by DHCP.

Gateway This displays the IP address of the MTA module’s

gateway on the WAN.

Primary DNS This displays the IP address of the MTA module’s

primary Domain Name System (DNS) server

Secondary DNS This displays the IP address of the MTA module’s

secondary DNS server.

Lease Time This displays the time that elapses before your device’s

IP address lease expires, and a new IP address is

assigned to it by the DHCP server.

PacketCable DHCP Option 122

NOTE: DHCP Option 122 is defined in RFC 3495.

SNMP Entity (Sub-

Option 3)

This displays the Telephony Service Provider’s

provisioning server address.

Kerberos Realm

(Sub-Option 6)

This displays the TSP’s Kerberos realm name.

Provisioning Timer

(Sub-Option 8)

This displays the TSP’s provisioning timer value.

Table 13: The Status: MTA DHCP Screen (continued)

Hitron E31N2V1 User’s Guide

Troubleshooting

Use this section to solve common problems with the E31N2V1 and your network. It

contains the following sections:



None of the LEDs Turn On on page 43



One of the LEDs does not Display as Expected on page 44



I Forgot the E31N2V1’s Admin Username or Password on page 44



I Cannot Access the E31N2V1 or the Internet on page 44

Problem: None of the LEDs Turn On

The E31N2V1 is not receiving power, or there is a fault with the device.

1 Ensure that you are using the correct power adaptor.

Using a power adaptor other than the one that came with your E31N2V1

can damage the E31N2V1.

2 Ensure the power adaptor is connected to the E31N2V1 and the wall socket (or

other power source) correctly.

3 Ensure that the power source is functioning correctly. Replace any broken fuses

or reset any tripped circuit breakers.

4 Disconnect and re-connect the power cable to the power source and the

E31N2V1.

5 If none of the above steps solve the problem, consult your vendor.

Hitron E31N2V1 User’s Guide

Problem: One of the LEDs does not Display as Expected

1 Ensure that you understand the LED’s normal behavior (see LEDs on page 14).

2 Ensure that the E31N2V1’s hardware is connected correctly; see the Quick

Installation Guide.

3 Disconnect and re-connect the power adaptor to the E31N2V1.

4 If none of the above steps solve the problem, consult your vendor.

Problem: I Forgot the E31N2V1’s Admin Username or Password

The default username is “technician”, and the password is “PoD Tool”.

Problem: I Cannot Access the E31N2V1 or the Internet

1 Ensure that you are using the correct IP address for the E31N2V1.

2 Check your network’s hardware connections, and that the E31N2V1’s LEDs

display correctly (see LEDs on page 14).

3 Make sure that your computer is on the same subnet as the E31N2V1; see IP

Address Setup on page 15.

4 If the above steps do not work, you need to reset the E31N2V1. See Resetting

the E31N2V1 on page 18. All user-configured data is lost, and the E31N2V1 is

returned to its default settings.

5 If the problem persists, contact your vendor.

Hitron E31N2V1 User’s Guide

Index

accounts, login 17

address, IP 15

address, IP, local 16

bar, navigation 18

buttons 10

cable connection 9

cable connection status 27

cable modem 9

CATV 19, 20

connection status, cable 27

conventions, document 3

customer support 3

default IP address 16

default username and password 17

DHCP 16, 22

DHCP lease 23

document conventions 3

downstream transmission 24

encoding 25

Ethernet port 16

factory reset 18

Fast Fourier Transform 25

FDMA 25

FFT 25

Fourier analysis 25

frequencies, cable 24

graphical user interface 9

GUI 9, 17

GUI overview 17

hardware 10

Hitron E31N2V1 User’s Guide

host ID 20

IANA 20

interface, user 9

IP address 15, 16, 20

IP address lease 23

IP address renewal 23

IP address setup 15, 16

IP address, default 16

IP address, format 20

IP address, local 16

ISP 20

LAN 19

LEDs 14, 43

lights 14

local IP address 16

logging in 17

MAC address 23

main window 18

Media Access Control address 23

modem 9

modem status 27

modulation 24

multiplexing 25

navigation 18

navigation bar 18

network number 20

OFDM 25

Orthogonal Frequency-Division

Multiplexing

overview, GUI 17

password 44

password and username 17

port, Ethernet 16

ports 10

private IP address 21

QAM 24

QAM TCM 24

QPSK 24

Radio Frequency 25

reset 18

Hitron E31N2V1 User’s Guide

RF 25

routing mode 21

SCDMA 25

status 19

status, cable connection 27

subnet 15, 16, 20

subnet, IP 15

support, customer 3

system information 19

TCP/IP 16

TDMA 25

upstream transmission 24

user interface 9

username 44

username and password 17

WAN 20

window, main 18

Windows 7 16