High Performance Wire & Cable Tracker (F-set) U8200

  • Checking & mapping metal line of open, short circuit, reverse, crossover
  • Finding the break point for 5E/6E cable, telephone line and display on the LCD
  • Testing crosstalk error on cable
  • Searching the cable, telephone lines and other various metal wires among the numerous lines, with anti-interference and high sensitivity, the volume control knob on receiver can be adjusted for sensitivity.
  • Measuring the cable length for open circuit over 2,000 meters
  • Low battery display
  • Auto power off
  • Verifying the connection between network cable and router
  • Testing live cable
  • Memory function for calibration data


High Performance F-set U268

  • Quickly tracing & find LAN/telephone/coax cable which is connected with switch or router
  • Easy to track with complete AC Interference Rejection
  • Check wire-map of LAN cable with receiver directly
  • Tone tracing breakage points of LAN cables and metal lines
  • RJ45/RJ11/BNC and other ports are included and the complex switch is not required
  • Non-metal tip


Long Distance F-Set / Underground Cable Locator U820

  • Detect invisible / underground cable location up to ~10km in length and 2m in depth
  • Estimated on electrified wire: 10km; Non-electrified wire: 2km
  • Adjustable sensitivity for transmitter and receiver for coarse and fine searching, and depth estimation
  • Easy to track with completely AC interference rejection
  • Tone trace live cable with alligator clip up to AC400V high voltage
  • Capable trace any cable that contains metal rod or wire
  • Dimensions / Weight: 320 x 160 x 55mm / 0.45kg

Handheld TDR Cable Fault Locator U612

  • No test dead zone
  • Fast test speed and accurate test distance
  • Large colorful LCD display
  • Intuitive user interface with six function keys
  • High-energy Li battery, continuous work 10 hours
  • Coaxial cable & multi-pair cable

SPECIFICATIONS

  • Max range: 8 km
  • Highest resolution: 1 m
  • Accuracy: ±1% cable length
  • Dead Zone: 0 m
  • Power consumption: 1 W
  • Weight: 0.42 kg
  • Dimension: 200 × 90 × 43 mm
  • Working temperature: -15℃ ~ +45 ℃
  • Storage temperature: -20℃ ~ +55 ℃
  • USB storage (optional): transmit wave form to U disk, and analyze the wave form on computer

VDSL / xDSL Tester U332V

  • Testing: VDSL 2; READSL; ADSL2+; ADSL2; ADSL
  • Fast Copper tests with DMM (ACV, DCV, Loop and Insulation Resistance, Capacitance, Distance)
  • Support VLAN
  • Support Vectoring
  • Supports Modem emulation and simulating login to Internet
  • Supports ISP login (username / password) and IP Ping test (WAN PING Test, LAN PING Test)
  • Supports all multi-protocol, PPPoE / PPPoA (LLC or VC-MUX)
  • Connects to CO via alligator clip or RJ11
  • Rechargeable Li-ion Battery
  • Beep and LEDs alarm indications (Lower Power, PPP, LAN, xDSL)
  • Data memory
  • LCD display, Menu operation
  • Auto shut off if no any operation on keyboard
  • Compliant with all known DSLAMs
  • Software management
  • Simple, portable and money-saved

VDSL Tester Car Charger

  • Input range: 13.5 -- 30 VDC / 1 -- 2A
  • Output range: 8.3 -- 8.6V
  • Duel colour LED: Red (charging) and Green (charged)
  • Short circuit and over-charging Protection
  • Ambient temperature: -30℃ to +70℃
  • Common tips and customised ones are available


Loop Resistance, Capacitance & Foreign Voltage Test Switch box

  • Measures the impedance between AB, A-to-Earth, B-to-Earth
  • Measures the capacitance between AB (by working with Hand-held Digital Multimeter UUT61A)
  • which discovers if there is any telephone connected.
  • Measure the Foreign Voltage of V(A-to-Earth), V(B-to-Earth)
  • Low cost

NBN FTTN Technology

For the trials NBN Co is using Alcatel-Lucent ISAM 7330 VDSL2 Vectoring hardware. VDSL2 Vectoring delivers significant improvements to broadband performance. Extensive trials and commercial deployments by Alcatel Lucent have demonstrated capabilities of up to 100Mbps downstream and 40Mbps upstream on lines approximately 400m from the premises. Actual performance will vary based on a range of factors including the distance from the node, the quality of the copper, equipment used in the premises and the service providers’ own network.

Source: hwupgrade.it (under laboratory conditions favourable to DSL speed outcomes)

However, vectoring is significantly less effective when there are legacy access networks utilising the same cable bundle causing cross-talk and other forms of interference between the copper pairs in the cable bundle, or when different vendors are providing VDSL2 with vectoring over copper pairs in the same cable bundle from separate nodes. What this means is the vectoring is unlikely to be very effective if there are legacy access networks utilising copper pairs in a cable bundle.

So it will only be when the legacy systems are turned off that NBN will be able to ramp up VDSL2 with vectoring to its full capability, but let’s not forget that as more VDSL2 with vectoring customers come online connection speeds will drop due to cumulative noise effects within cable bundles and for many Australians this will mean a connection speed that is less than stellar and far lower than what FTTP would have provided.


FTTN delivers vastly different performance levels depending on location

While FTTP is essentially unaffected by distance, the FTTN achievable speed is all about distance.

  • At 100m, FTTN could deliver about 100Mbps
  • At 500m, that drops to about 50Mbps
  • At 1km, it drops to about 25Mbps

The distance is the actual copper length, a typical FTTN system would deliver maximum speeds of less than 25Mbps, which is in line with the NZ experience of 13Mbps average.

VDSL / xDSL Fault Analysis & Location

There are at least 11 connectors through the entire link, and the most prone to problems is the drop wire section.

Step-1: Customer Side Test

  • To place the xDSL tester at red line 2 (above Figure) before the Terminal splitter. If normal, indicates the xDSL line is fine; Otherwise, there is faulty line.
  • To place the xDSL tester at red line 3 before the xDSL MODEM. If normal, indicates the Terminal splitter is fine; Otherwise there is a problem in the Terminal splitter.

Step-2: Twist Pair Line Test

Line fault can be divided into two categories:

  • Too much attenuation in the line, such as:
  • The line is too long;
  • The quality of the line is poor;
  • Short circuit;
  • Open circuit;
  • The fittings are corroded;
  • Poor contact point;
  • Excessive bridge taps
  • Interference or too much noise in the line
  • Signal cross-talk between pairs;
  • Radio interference;
  • Electromagnetic interference household appliances;
  • Motor or electromagnetic interference caused by electric locomotive;
  • The weather causes interference cables (such as lightning)

The failure is often caused by a number of factors listed above.

The xDSL line loop resistance index should be less than 900Ω, if the actual line length is much less than the line length that is estimated based on the line loop resistance, there is poor contact on the line, the joint oxidation and other high impedance fault.