Viavi HST-3000 User manual

Chapter 1 Getting Started

About G.SHDSL testing

2HST-3000 G.SHDSL Testing User’s Guide

About G.SHDSL testing

The HST-3000’s optional G.SHDSL testing feature enables

users to emulate an STU-R, STU-C, and Ethernet terminal

equipment (TE) to turn up and troubleshoot G.SHDSL circuits,

and the service over the circuit. Using the optional IP suite or

optional on-board web browser, the HST-3000 can also vali-

date a data connection over the network.

The capabilities of the G.SHDSL feature include the following:

– Both remote and central office (exchange) modem emula-

tion

– Ethernet TE emulation to verify service on the premises

LAN

– Various physical line and EOC standards

– User EOC messages

– Network layer and PPP emulation and authentication

– IP layer routing

– ATM loopback

– ATM F5 loopback

– ATM BERT capability

– IP ping

– Web browser

– “In-line” STU-R TE replacement “through” mode

– Supports 2-wire or 4-wire interface

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Chapter 1 Getting Started

Quick tour

HST-3000 G.SHDSL Testing User’s Guide 3

Quick tour

The following section describes the status indicators and

connectors applicable to G.SHDSL.

Status LEDs

These indicators report the status of the application. The func-

tion of each LED is described in Table 6.

Table 6 Status LEDs

LED Function

Sync A two-color LED that reports the status of

modem synchronization.

– Flashing green indicates that the modems

are training.

– Solid green indicates that the modems have

synchronized.

– Solid red indicates a synchronization error

has occurred.

Data A two-color LED that reports the status of the

data connection.

– Flashing green indicates that the data con-

nection is not yet established.

– Solid green indicates that a data connection

has been established with the network (so

that the HST-3000 may send and receive

data on the network).

– Solid red indicates that a data connection

error.

Error A two-color LED that reports modem errors.

– Solid red indicates an error condition.

Alarm A two-color LED that indicates alarm condi-

tions.

– Solid red indicates a local alarm condition.

– Solid amber indicates a remote alarm condi-

tion.

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4HST-3000 G.SHDSL Testing User’s Guide

Lpbk The loop back LED indicates a loopback con-

dition.

–Solid amber indicates that a local loop-

back has been achieved.

Batt Indicates the battery status.

– The Batt LED is off when the battery has a

useful charge.

– Solid green indicates the AC adapter is

plugged in.

– Solid red indicates the battery is approxi-

mately 20 percent or below of full charge.

– Flashing red indicates approximately five

minutes of use remains. When this happens,

the battery should be charged or replaced

immediately.

– Solid amber indicates the battery capacity

indicator (“gas gauge”) needs to be reset.

For information about replacing or charging the

battery, see the HST-3000 Base Unit User’s

Guide.

Table 6 Status LEDs (Continued)

LED Function

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Chapter 1 Getting Started

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HST-3000 G.SHDSL Testing User’s Guide 5

Connectors

The connectors for G.SHDSL are located on the right side of

the SIM, as shown in Figure 1.

Use the 8-pin modular jack (G.SHDSL connector) for connec-

tion to G.SHDSL circuits. If you are using through mode,

connect an Ethernet cable to the Ethernet jack on the top

panel.

The connector uses pins 4 and 5 for 2-wire G.SHDSL and the

first pair of 4-wire G.SHDSL. The second pair for 4-wire uses

either 1 and 2 or 3 and 6.

Figure 1 G.SHDSL connector

SIM

base unit

G.SHDSL connector

WARNING: ELECTRICAL SHOCK

Electrical shock may result in serious injury or death. Use

care when connecting to telecommunications circuits, to be

sure that you do not come in contact with exposed conduc-

tors or power mains. Connect TNV signals to TNV ports

only.

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Chapter 1 Getting Started

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6HST-3000 G.SHDSL Testing User’s Guide

Sealing current

terminator

The sealing current terminator, HST3000-SC, is an optional

accessory available for DSL service. It is used when sealing

current or wetting current must be terminated. Typically this

occurs in an all-digital environment, but is not typical in DSL

since the equipment (NT1 or telephone) provides termination.

The LED on the module indicates presence of sealing current.

Place the module in-line, using the provided test cable.

The module is designed to terminate voltages under 80 volts,

anything over 80V may make the module act erratic (LED

flicker, go dim, etc.)

NOTE:

It is not recommended leaving the sealing current termina-

tor on the line in the presence of a repeater because the

module oscillates and could cause signal integrity issues

effecting HST test results.

CAUTION: DAMAGE TO MODULE

Placing the sealing current terminator on a line with voltage

over 150 volts may damage the unit.

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