Acterna HST-3000 User manual

Chapter 1 Getting started
Overview of features
2HST-3000 DDS Local Loop Testing User’s Guide
Overview of features
When attached to the HST-3000 base unit, the DDS Local
Loop (DDS-LL) SIM lets you perform physical layer test oper-
ations necessary for provisioning transmission circuits. The
DDS-LL test option includes the following features:
– BER testing on all supported rates, including end-to-end
(straightaway) testing or loopback testing using another
test device at the far end.
– Channel service unit/data service unit (CSU/DSU) emula-
tion.
– A single 8-pin, RJ-48 DDS-LL interface connector. For pin
assignments, see Table 7 on page 6.
– Copper testing. See the HST-3000 Copper Testing User’s
Guide.
– Frame Relay testing (optional). See the HST-3000 Frame
Relay Testing User’s Guide.
Status LEDs
Six status LEDs are located on the front of the HST-3000,
above the LCD screen. Tabl e 6 describes the LEDs.
Table 6 Status LEDs
LED Description
Sync A two-color LED that reports the signal status.
– Green indicates a signal is present and there is
frame synchronization.
– Red indicates that at least one of the channels
does not have signal or frame synchronization.
– If the Sync LED is not illuminated, no signal has
been detected.

Chapter 1 Getting started
Status LEDs
HST-3000 DDS Local Loop Testing User’s Guide 3
Data A two-color LED that reports pattern synchroniza-
tion status.
– Green indicates pattern synchronization has
been achieved on all active channels.
– Red indicates that at least one of the active
channels does not have pattern synchroniza-
tion.
– If the Data LED is not illuminated, no pattern
synchronization has been detected on any
active channel.
Error An LED that reports error conditions.
– Solid red indicates an error.
– If the Error LED is not illuminated it means all
Summary results are OK.
Alarm This LED is not used in DDS local loop testing.
LpBk An LED that shows when the HST is in loopback.
– Green indicates that the HST has been suc-
cessfully looped up.
– If the LpBk LED is not illuminated, then the loop-
back is active.
Table 6 Status LEDs (Continued)
LED Description

Chapter 1 Getting started
Status LEDs
4HST-3000 DDS Local Loop Testing User’s Guide
Batt A three-color LED that indicates the battery status.
– The Batt LED is off when the battery has a use-
ful charge.
– Solid or flashing amber indicates the battery
capacity indicator (“gas gauge”) needs to be
reset (see the HST-3000 Base Unit User’s
Guide).
– Solid green indicates a power source is plugged
in.
– Solid red indicates the battery is at about 20
percent or below full charge.
– Flashing red indicates about five minutes of use
remains. When this happens, the battery should
be charged or replaced immediately. For infor-
mation about recharging or changing the bat-
tery, see the HST-3000 Base Unit User’s Guide.
Table 6 Status LEDs (Continued)
LED Description

Chapter 1 Getting started
DDS-LL interface
HST-3000 DDS Local Loop Testing User’s Guide 5
DDS-LL interface
The electrical interface for the DDS-LL testing is an eight posi-
tion modular connector located on the side of the SIM (see
Figure 1). Four conductors are used on the connector. For pin
assignments, see Table 7 on page 6.
Figure 1 DDS interface connector
DDS-LL
SIM
Base unit
DDS connector
NOTE:
The DDS interface connector is protected by a flexible dust
cap. The dust cap is a permanent fixture and should not be
removed.
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 telephone-network voltage
(TNV) signals only to TNV ports.

Chapter 1 Getting started
Test modes
6HST-3000 DDS Local Loop Testing User’s Guide
Tabl e 7 shows the pin assignments for the DDS-LL interface.
For additional interface specifications, see “Interface specifi-
cations” on page 44.
Test modes
DDS-LL tests are performed in Terminate mode. In Terminate
mode, the HST separates the transmit and receive sides of a
DDS path. The input signal is terminated at the receive side,
and a totally independent signal is generated for the output.
Options
You can order software options to add functionality to the
HST-3000. For DDS-4WLL, the following option is available:
– Frame Relay — Allows you to test frame relay services.
Available for E1, T1, Datacom, and DDS local loop SIMs.
(Ordering number: HST3000-FR)
Table 7 DDS connector pin outs (CSU/DSU Emulation)
Pin Number Function
1 Ring Lead, Transmit data (Tx)
2 Tip Lead, Transmit Data (Tx)
3 Not Used
4 Not Used
5 Not Used
6 Not Used
7 Tip Lead, Receive Data (Rx)
8 Ring Lead, Receive Data (Rx)

Chapter 1 Getting started
Launching an application
HST-3000 DDS Local Loop Testing User’s Guide 7
For information about purchasing options for the HST-3000,
contact your JDSU representative or your local JDSU sales
office. You can also contact JDSU through the company web
site, www.jdsu.com.
Launching an application
Before you can launch an application, you must have a
DDS-LL SIM. Make sure the SIM is properly connected to the
HST base unit before you power on the unit. For information
about connecting a SIM and powering the HST, see the HST-
3000 Base Unit User’s Guide.
The following procedure describes how to launch an applica-
tion.
To launch the DDS-LL application
1Power on the HST-3000.
2Press the DDS-LL soft key.
The DDS-LL Measurements menu appears. This menu
lists the available DDS-LL test applications. Menu items
vary depending on the options you purchased.
T1 Measurements menu

Chapter 1 Getting started
Accessing the test configuration menus
8HST-3000 DDS Local Loop Testing User’s Guide
3Press a number key that corresponds to the application
you want to launch. For example, press the 1 key to
launch the BERT application. You can also use the up
and down arrow keys to highlight your selection, and the
press the OK key. The following table lists all currently
available T1 applications.
The HST launches the application.
Accessing the test configuration menus
To configure test settings, you must access the configuration
settings menus. The following procedure describes how to
access the menus.
To access the test configuration menus
1Launch the DDS-LL application. See “Launching an appli-
cation” on page 7.
The HST launches the application and a test result screen
appears.
2Press the Configure navigation key.
Application Select...
Bit error rate testing
on the DDS four-
wire local loop
BERT
Frame relay testing Frame Relay
For information about Frame Relay
testing, see the HST-3000 Frame
Relay Testing User’s Guide.

Chapter 1 Getting started
Accessing the test configuration menus
HST-3000 DDS Local Loop Testing User’s Guide 9
A settings menu appears. Menus vary depending on the
application you selected.
3To view a different menu, press the corresponding soft
key.
For example, to configure a test pattern, press the
PATTERN soft key.
You have accessed the test configuration menus.
Soft keys
Configuration
menu

Chapter 1 Getting started
Instrument settings and user preferences
10 HST-3000 DDS Local Loop Testing User’s Guide
Instrument settings and user preferences
For information about changing instrument and preference
settings, such as date and time format, port settings, sound,
and screen settings, see the HST-3000 Base Unit User’s
Guide.