Atec SC-ADSL User Manual

COMMUNICATIONS TEST & MEASUREMENT SOLUTIONS

SmartClass™ADSL

ADSL and IPTV Service Installation Tester

Key Features

• All-in-one tool for broadband services installation, including
copper,ADSL 1/2/2+, IP data, and IP video testing

• Fast and easy CableCheck copper test for ADSL2+:
longitudinal balance, capacitance, DVOM, and loadcoil
counter

• Thorough ADSL analysis, including graphical bits-per-tone
and SNR-per-tone

• IPTV STB emulation and QoS testing for broadcast and VoD
services

• ADSL Through mode enables technician to analyze DSL
statistics while viewing the IPTV stream

• Full protocol suite to verify connectivity with ATM OAM F4
and F5, PPP, static and dynamic IP, DNS support, IP PING,
TRACERT, HTTP, and FTP

• Ethernet Terminal Equipment (TE) mode to quickly isolate
customer premises equipment (CPE); Through mode to
replace customer modem

The JDSU SmartClass ADSL is the ideal tool for the technician installing and
maintaining asymmetrical digital subscriber line (ADSL) services. The tester
enables the technician to test loop quality, verify ADSL signal and performance, and
validate the customer’s Internet connection with unprecedented ease and speed.

SmartClass ADSL provides a full set of copper tests that qualifies the customer
loop for the delivery of newer services such as Internet protocol television (IPTV)
including longitudinal balance, a key copper metric to ensure external noise and
interference will not impact the quality of the IPTV streams with intermittent
pixelization and other disruptive effects. Digital volt-ohm meter (DVOM),
distance-to-short, leakage, opens/capacitance, and loadcoil counter tests
guarantee the copper loop does not exhibit connection issues and that the quality
of the copper pair is within allowed standards for ADSL2+ transmission in terms
of loop length and isolation. The unique CableCheck sequence provides a very
easy and fast method to qualify the copper loop for ADSL2+ services with a
pass/fail indication and programmable thresholds. The full-featured ADSL tests
quickly verify provisioned rates and quality, including up/down actual and max
rates, margin, attenuation, capacity, TX power, errors, alarms, asynchronous
transfer mode (ATM) optical amplifier module (OAM) and stats, Ethernet stats,
and bipolar transistor (BPT) graphs.

In addition, the SmartClass ADSL supports the storage and retrieval of pre-set
configurations and allows technicians to transfer results to a person computer
using a universal serial bus (USB) connection. The instrument’s features,
including its rugged design and field-replaceable AA batteries, make it the
essential ADSL installation tool.

WEBSITE: www.jdsu.com/test

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ADSL2+ has emerged as an IPTV-enabling technology of choice for network
operators and services providers seeking new revenue streams and competitive
positioning. At the same time consumers are signing up for multiple services in
this very competitive environment expecting the best service quality, making it
imperative that operators quickly and cost-effectively install ADSL2+ lines with
the confidence that their complex triple-play services are working well.

Delivery of ADSL services requires a single copper pair configuration of a
standard voice circuit with an ADSL modem at each end of the line, creating three
information channels—a high-speed downstream channel, a medium-speed
upstream channel, and a plain old telephone service (POTS) channel for voice.
Data rates depend on several factors including the length of the copper wire, the
wire gauge, presence of bridged taps, and cross-coupled interference. The line
performance increases as the line length is reduced, wire gauge increases, bridged
taps are eliminated and cross-coupled interference is reduced or is canceled out by
a good longitudinal balance characteristic of the copper wire. The modem located
at the subscriber’s premises is called an ADSL transceiver unit-remote (ATU-R),
and the modem at the central office is called an ADSL transceiver unit-central
office (ATU-C). The ATU-Cs take the form of circuit cards mounted in the digital
subscriber line access multiplexer (DSLAM), while a residential or business
subscriber connects their PC and ATU-R modem to a telephone outlet on
the wall.

ADSL2 has been specifically designed to improve the rate and reach of ADSL
largely by achieving better performance on long lines. ADSL2 accomplishes this
by improving modulation efficiency, reducing framing overhead,achieving higher
coding gain, improving the initialization state machine, and providing enhanced
signal processing algorithms. ADSL2+ further improves on the ADSL2 standard
by allocating additional spectrum for downstream data, dramatically improving
the data rate over ADSL2 or ADSL.

2

ADSL and IPTV Overview

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3

With its improved downstream rates, ADSL2+ is the preferred technology to
deliver IPTV. IPTV requires the installation of a set top box (STB) to decode the
compressed video stream for both broadcast and video-on-demand (VoD)
services. But transmitting IPTV streams through the network is far more
challenging than other broadband services. Broadband applications other than
IPTV (such as web browsing and file sharing) mainly use IP/TCP (Internet
protocol/transmission control protocol) with acknowledgment that sent packets
have been received and a retransmission, in case of lost packets. Unlike IP data
services, IPTV is a highly compressed, real-time application,and lost video packets
caused by intermittent problems with the transport or video stream can directly
be visible to the user in the form of pixelization, blurring, and frame freezes. In
addition, poor transaction quality (to receive program channels) and poor overall
content quality may also occur, further impacting the customer experience.

Video Qualit y Layers

Content Quality

Video Stream Quality

Transport Quality

Transaction Quality

Video QoS

Error Indicator Count

Continuity Error

PCR Jitter

PSI Table Data (Error)

RTP Packet Loss

RTP Packet Jitter

RTSP Latenc y (VOD)

IGMP Latency (BC-TV)

Video QoE Indicators

Picture: B lurring, Edge Distortion, Visual Noise
Audio: Lip Sync, Drop Outs

Pixelation, Tiling, Frame Freezes, Blue Screen

Service Accessibilit y, Channel Change Latency,
Pause, Play Latency, Service Latency

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4

The SmartClass ADSL can be used to verify service delivery at the provisioned bit
rates and quality levels through a quick sync check at various points along the
customer circuit (ATU-R, network interface device [NID], splice case, cross box,
main distribution frame [MDF], DSLAM). If the tester cannot synchronize with
the DSLAM, the SmartClass ADSL provides the copper tests needed to check the
wire pair for service affecting faults, or in the worst case helps find a new
serviceable pair. In addition to DVOM, the included capacitance (opens),
longitudinal balance, and load coil counter tests help identify unique ADSL
problems in the convenient CableCheck test sequence. If the delivered service is
slower than expected, the SmartClass ADSL provides resistance and opens tests to
verify the presence of service-affecting bridged taps or the balance test to assess
noise immunity.

Separately, a poorly balanced copper wire will pick up noise that contributes to
video packet loss (continuity errors). The copper wire can be checked using the
SmartClass ADSL load coil counter to count the number of service-choking load
coils on the line, as well as monitor for very high noise levels. The bits-per-tone
and SNR-per-tone graphs are handy to correlate dips in performance with
specific frequencies and crosstalk.

SmartClass ADSL also enables technicians to verify end-to-end IP connectivity
with IP PING and traceroute. Other tests include the File Transfer Protocol (FTP)
throughput test, to ensure the network supports the requested bandwidth, and
the Hypertext Transfer Protocol (Worldwide Web Protocol) (HTTP) Web test,
that identifies problems related to dedicated websites.

Measuring ADSL and IPTV Performance

COMMUNICATIONS TEST & MEASUREMENT SOLUTIONS

5

With the IPTV software option, technicians can quickly verify the availability of
IPTV service and its required bandwidth. The quality of service (QoS) parameters,
such as continuity error, program clock reference (PCR) jitter, and packet
identifier (PID) map help indicate video stream quality problems. Content quality
issues are determined by the error indicator count, transport quality metrics can
be measured with the IP packet jitter and real-time transport protocol (RTP)
packet loss features, and the “zap-time” presented by the Internet group
management protocol (IGMP) or real-time streaming protocol (RTSP) latency
judges the transaction quality.

ATU - Cs

POTS Switch

DSLAM

Data Network

ADSL2+,

Data, IPTV

Copper Copper

Network Last Mile

MDF

POTS

Cross

Box

DLC

ATM

POTS

Splitter

ADSL

Cross

Box

Copper, ADSL2+,

Data, IPTV

Pedesta l

Splice

Case

Copper, ADSL2+,

Data, IPTV

Home

POTS

Splitter

NID

POTS

ADSL

ATU - R

NID

NID

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Configurations

ADSL Annex A
Cu-ADSL Annex A

ADSL

Standard Compliance,
ADSL over POTS Modem

– ANSI T1.413-1998,Issue 2
– ITU-T G.992.1 Annex A (G.DMT)
– ITU-T G.992.2 Annex A (G.lite)
– ITU-T G.992.3 Annex A, L,M
– ITU-T G.992.5 Annex A (ADSL2+)
– ITU-T G.992.5 Annex L (RE-ADSL)
– ITU-T G992.5 Amendment 1

General Settings

– Auto Sync
– Auto or manual framing mode

Physical Layer Feature Support

– Actual and maximum bit rates capacity
– Noise margin
– Attentuation
– Modern state
– TX power
– Far vendor ID, revision
– Graphical display of BPT (bits-per-tone)
– Re-sync counter
– Graphical display of SNR (SNR-per-tone)
– Fast or interleaved

ADSL Errors

– LOS (Loss of Sync)
– LOF (Loss of Frame)
– LOP (Loss of Power)
– CRC (cyclic redundancy check)
– HEC (header error correction)
– FEC (Forward Error Correction)
– Modem errors

PPP/IP Connectivity

– BRAS: PAP/CHAP
– IPCP
– NAT
– PPPoA,PPPoE,IPoA, IPoE, Bridged
– RFCs 2364, 2516,1483, 2684

Through Modes

– Bridged Ethernet
– IPoE
– IPoA
– PPPoE
– PPPoA

AT M

VCC scan:up to five VPI/VCIs
OAM F4/F5 near and far loopbacks

IP

– MAC address
– WAN/LAN status screens
– GATEWAY/DNS screen
– DHCP client on WAN and LAN
– IP release/renew
– DNS support WAN and LAN
– DCHP server on LAN

IP PING

– IP PING:TX/RX, received,delay
– PING count,PING size
– PING to URL (DNS)
– Remote PING monitor

TRACERT

– IP, name,hops, delay

Web Test (HTTP)

– URL
– Download status
– File size
– Time
– Rate

FTP

– URL/file
– Connection status
– Time
– File size kb
– Rate kbps

DNS

Configure up to three manual addresses

Ethernet Statistics

– RX/TX bytes
– RX/TX frames
– RX/TX errors
– Collisions

ATM S tati stic s

– ATM OAM F4/5 near and far loopback count
– UP/DN good and idle cell count
– Bad HEC cell count
– Dropped cell count
– TX/RX PDUs
– TX/RX AAL bytes
– TX/RX total error count

Copper Test

Test Range Resolution Accuracy

AC Volts 0 – 300 Peak 1 V 2% ±1 V
DC Volts 0 – 300 (VDC + Peak AC) 1 V 2% ±1 V

Resistance

0 – 999 Ω 1 2% ±2.5 Ω
1 – 9.99 kΩ 10 2% ±2.5 Ω
10 – 99.9 kΩ 100 2% ±2.5 Ω
100 – 999 kΩ 1 k 2% ±2.5 Ω
1 – 9.9 MΩ 10 k 6.5% ±2.5 Ω
10 – 100 MΩ 100 k 6.5% ±2.5 Ω

Leakage

0 – 999 Ω 1 2% ±2.5 Ω
1 – 9.99 kΩ 10 2% ±2.5 Ω
10 – 99.9 kΩ 100 2% ±2.5 Ω
100 – 999 kΩ 1k 2% ±2.5 Ω
1 – 9.9 MΩ 10k 6.5% ±2.5 Ω
10 – 100 MΩ 100k 6.5% ±2.5 Ω

Distance to Short

0 – 30 kft/10 km 1 ft/1 m

Capacitance/Opens

0 – 2,999 ft/999 m 1 ft/0.1 m 2.5% ±45 pF
0 – 44.9 nF
3 kft/1 km – 66 kft/20 km 1 ft/0.1 m 2.5% ± 45 pF
45 nF – 1.04 µ

DC Current

1 – 110 mA 1 mA ±2% ±1 mA

Longitudinal Balance

35 – 70 dB 1 dB 2 dB

Load Coil Counter

0 – 27 kft/8230 m up to 5 ±1

6

Specifications

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7

Product Code Description

CSC-DSLSIL-P2 ADSL Silver package complete (Annex A)
CSC-DSLGLD-P3 Copper and ADSL Gold Package complete (Annex A)
SCASWVIDEO SmartClass ADSL IP Video Software Option

Packages include standard accessories,USB cable, and test leads.

IP Video

Modes

– Terminate over ADSL2+ WAN interface

Set Top Box Emulation

– IGMPv2 emulation client
– Single IP video stream
– IGMP message status/decode status/error message
– RTSP emulation client

Service Selection Transport Stream

– MPEG2-TS Broadcast:UDP/RTP
– MPEG2-TS Video on Demand (VOD):UDP/TCP
– ISMA Broadcast
– ISMA VoD:UDP/TCP
– UT Starcom Rolling Stream

Video Source Address Selection

– URL and Port Number

QoS

– TS PCR Jitter
– IGMP Latency (Zap Time)
– RSTP Latency (Zap Time)
– TS Continuity Error Event Count
– TS Error Indicator Set Count
– TS Synchronization Errors Count

Video Stream Data Rates

– Connection Status
– Total
– Video
– Audio
– Data

IP Packet Analysis

– Total IP packets RX count
– Max packet jitter
– IP packet jitter
– RTP packets lost,count
– RTP OOS, count
– RTP errors,count

PID Analysis

– PID number
– PID type (video,audio,data)
– PID description

Signaling Protocol Message Decode

– IGMP messages
– RTSP messages

Tes t Acc ess

– ADSL1, 2-wire I/F
– ADSL 2, 2-wire I/F
– ADSL 2+, 2-wire I/FIP packet analysis

Standards

– RFS-2236, IGMP
– RFC-2326, RTSP
– ISO (IEC 13818), video transport steam and analysis
– ETSI TR 10-290 V2.1,video measurements
– TFC-1483; 2684, ATM AAL5
– RFC-2364, PPPoAAL5

General

Languages

– English, Chinese,German, Italian,Spanish,Portuguese

Power supply

– 4 AA field-replaceable batteries (NiMH and or Alkaline)
– Operating time: about 20 on/off cycles and tests on a full

charge,depending on usage and conditions
– Auto power down (adjustable)
– Charging time 3 to 4 hours for fast charge,overnight for

maximum charge and performance
– AC line operation via external adapter/charger

Permissible ambient temperature

– Nominal range of use –5°C (23°F) to +50°C (122°F)
– Storage and transport –30°C (-22°F) to +60°C (140°F)

Humidity

– Operating humidity 10% to 80%

Physical

– Size (H x W x D) 230 x 120 x 50 mm (9.05 x 4.72 x 1.97 in)
– Weight, including batteries < 1.1 kg (2.5 lbs)
– Weight without accessories 0.6 kg/1.5 lbs
– Display 240 x 160 monochrome display

CE Marked

0rdering Information

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FAX : [phone]

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www.jdsu.com/test

Product specifications and descriptions in this document subject to change without notice. © 2009 JDS Uniphase Corporation 30137426 007 0409 SCNONCU.DS.ACC.TM.AE April 2009