Introduction

    TW-701D ADSL2+ Tester is a hand-held communication instrument that supports batteries as power supply, and has a large color touch screen with English display. This product is particularly applicable for the field cutover, acceptance and maintenance of ADSL equipment, and can be widely used by ADSL business operators like China Telecom, China Rail Company, etc, and is the best choice of ADSL engineers and technicians.

Major Features:

● English menu, large color touch screen, and simple operation;
● Portable design; built-in lithium battery, and its working time are over 6 hours;
● Multi-task support (test and browsing previous records at one time);
● Save, delete test setup and test results and power-off memories;
● Save 7 test setup and 100 test results;
● Complete alarm detection and indication;
● Communicate with PV via RJ45, and make saving, analyzing and printing for test results;
● Online updating of software;
● Webpage browsing.
● PC simulation: Simulate PC and dial-up via Modem.
● Network layer test: It includes Ping, IP config, Route, Tracert test.


Major Functions

    For ADSL physical layer:
● Fast channel and interleave channel.
● Line parameters testing: up and down channel rate, line attenuation, noise margin, transmitting power, and use rate of channel.
● Performance analysis of line error and alarm:
   Automatic detection and display of such alarms as signal loss, frame loss, power loss and cell loss etc. at proximal end and remote end;
    Detection of fatal error frame count at proximal end and remote end;
    Detection of power loss count at proximal end and remote end;
    Detection of signal loss count at proximal end and remote end;
    Detection of interleave channel FEC forward error correcting code count at proximal end and remote end;
    Detection of fast channel FEC forward error correcting code count at proximal end and remote end;
    Detection of interleave channel CRC error frame count at proximal end and remote end;
    Detection of fast channel CRC error frame count at proximal end and remote end;
    Detection of interleave channel HEC error frame count at proximal end and remote end;
    Detection of fast channel HEC error frame count at proximal end and remote end;
    Detection of interleave channel NCD error frame count at proximal end and remote end;
    Detection of fast channel NCD error frame count at proximal end and remote end;
    Detection of interleave channel OCD error frame count at proximal end;
    Detection of fast channel OCD error frame count at proximal end;
    Calculate error second (ES), serious error second (SES), and unavailable second (UAS) of up and down channel;
    Calculate bit error count of up and down channel;
    Calculate total cell, total data cell, total transfer cell.

● DMT sub-channel carrier pattern
    Display modulated bit numbers on each DMT sub-channel by diagram and digital mode

● Display user’s connection state and testing progress at real time, and present information of local equipment manufacturer and version.

● TRACE function:
    Trace the transmission path of IP pack, display IP routing

For ADSL network layer:

● ISP PING test
    Verify the connectivity of user to ISP provider.

● Simulated PC logon
    Simulate user terminal PC logging on ISP provider to verify if ADSL user can surf on the Internet.

● LAN PING test
    Verify the PC in connection failure within LAN.

● WAN PING test:
    Directly PING the website IP or web address to local WAN to verify the connectivity of WAN link.

● Instead of ADSL MODEM to test Internet surfing speed and flow available for the user.

● Completely instead of ADSL MODEM to simulate PC logon, and verify the operation performance of user’s terminal equipment.

● Obtain dynamic IP address by PPPoE dial-up.

● Webpage browsing.

For ADSL line:

● Digital multi-meter (DMM) test
    Test AC/DC voltage, loop resistance, insulation resistance, capacitance, etc.

● Phone connectivity test
    Built-in separator connected an external phone to verify the connectivity of user’s phone.

● Estimate the distance of telephone wire.

Technical index:

● Connectors: RJ11 --- WAN interface 、PHONE interface RJ45 --- LAN interface

● Applicable standards: ITU G.992.1(G.DMT)、ITU G.992.2(G.lite)、ITU G.992.3(ADSL2)、RE-ADSL、ITU G.992.4(Splitterless ADSL2)、ITU G.992.5 (ADSL2+)、ITU G.992 Annex A，Annex B，Annex C（FBM and DBM）、ANSI T1.413 Issue 2、YDN078-1998

● Upper layer protocol support: PPP over ATM（PPPoA）、PPP over Ethernet

(PPPoE)、Ethernet over ATM (RFC-1483B) 、RFC-1483R 、IP over ATM (IPoA)

● Upper layer communication support: ATM、UBR、VBR、CBR

● Line performance index:
    Down speed: 24Mb/s,
    Up speed: 1.024Mb/s,
    Maximum transmission distance：6.5Km

● Digital multi-meter:
    DC voltage: -110V~+110V，accuracy: ±5%
    AC voltage: 0~110V，accuracy: ±5%
    Resistance: 0~20MΩ，accuracy: ±5%
    Capacitance: 0~220µF，accuracy: ±5%

Other parameters:

● Power supply
（1）Special power adapter
    INPUT: AC220V 50Hz
    OUTPUT: DC 9V 2A
（2）Built-in rechargeable battery
    4000mAh 7.2V rechargeable lithium battery
    Working time: 6 hours
    Charging time: 6 hours in closed state, and 10 hours in open state
● Dimensions and weight:
    L×W×H: 200×160×42mm
    Weight: 900g
● Ambient parameters:
    Working temperature: 0～40℃
    Storage temperature: -30～+70℃
    Humidity: 5%～90% non-condensing