This innovative instrument designed and produced by ATEN, is considered the most progressive Test Set for qualification, certification and maintenance of symmetric copper pairs

ALT2000 Advanced Line Tester

POTS - ISDN - T1 - E1 - HDSL - ADSL - SDSL

**Copper Line Qualification and Maintenance:
Nowadays, there is no special need to test copper carrying traditional POTS services. However, broadband services using higher bandwidths call for qualifying the performance of the copper pair. Tests are needed to make sure that reliable service can be assured at these higher data rates. The copper pair that operates fault-free for POTS and ISDN may not be suitable for high-speed xDSL services.

Suitable test equipment for both pre-installation and in-service qualification becomes of paramount importance to ensure quality of service.

The ALT2000 is a sophisticated analog tester with a wide range of test methods covering not only xDSL, but also POTS, Modem, ISDN, T1, E1, HDSL, SDSL and G.SHDSL.

Because technicians with analog performance testing skills have become a scarce resource, ALT2000 includes both pre-programmed and internationally standardized tests for rapid Pass/Fail testing by field technicians. The more advanced users can take advantage of the full capabilities of ALT2000 to rapidly pin-point and resolve line problems.

With ALT2000 you can carry out a wide range of measurements, all contained in a remarkably small, portable package. This means that you don't have to carry several separate, dedicated testers. The goals of low capital spending, minimal training costs and, most importantly, increased productivity from field technicians are easily achieved with ALT2000.

The easy-to-use graphical interface simplifies testing, and both qualification and maintenance testing is straightforward.

Qualification
The tests performed in the qualification and certification of a line provide evidence that the line has been correctly installed and suitable for the type of service that is to be used on it. These tests include: 

• Noise 
• Return loss 
• Insertion loss 
• Longitudinal balance 
• Bit rate evaluation (ADSL, SHDSL)
  

Maintenance
The measurements used for maintenance and fault location are more analytical and specialized: 

• Near End Cross Talk (NEXT) 
• Far End Cross Talk (FEXT) 
•  Impulsive noise 
• Microinterruptions 
• Isolation 
• Spectral analysis of noise 
• Power Spectrum Density of the signal 
• TDR test to identify possible causes of problems
• Analysis of the base band (POTS) functionality 
• Spectrum analyzer 
• Network analyzer
  

**Automated Line Quality Verification:
Line measurements are intended to qualify a line for one specific service. To make the process easy, ALT2000 has separate modes for collection testing, spectrum testing and single tests. In all of these operation modes you can specify if the test is carried out on one or two pairs.

Collection Tests: this mode enables you to automatically run tests that are essential to qualify a copper pair for a specific service, with Pass/Fail analysis for each result.

Spectrum Tests: Ideal for more detailed study of the line characteristics. The Spectrum mode enables you to look graphically at a single parameter displayed across the whole spectrum. The frequency range is automatically chosen for the selected line type.

Single Tests: In this mode ALT2000 runs a specific test over the correct band for the service you have chosen (ADSL2/2+, ADSL, ISDN, POTS, etc.). A numeric result and a Pass/Fail indication based on international standards are displayed.

**Advanced Measurements for Qualification and Maintenance:
Advanced measurements can be run in base-band and wide-band, independently of the service to be installed. With the Spectrum Analyzer you can view the noise or signal strength across the selected band. The Power Spectrum Density (PSD) function can be used for spectral policing.

The Generator and Meter enables you to inject a signal into the line and check the response to measure the characteristic impedance of the line. The Network Analyzer measures the level of echo signals produced by impedance mismatching. The White Noise Generator stresses the installation to test its tolerance to interference.

**Time Domain Reflectometer for High-performance Fault Finding:
The Time Domain Reflectometer (TDR) is very useful for both qualification and maintenance. With a TDR you can measure the length of the loop accurately, or find the precise location of a fault. The high performance of the optional TDR module enables you to find faults within a maximum range of 30 kft.

ALT2000 also has a 4-wire setting for identifying problems caused by coupling and crosstalk between the line under test and another line.

The tester’s display settings include Zoom, Shift, Save, Shape Comparison, numeric indications and so on, to analyze the shape of the trace in detail: The shape of the trace can be used to analyze the nature of the fault on the line. Faults may be man-made (split pairs, wire gauge, insulation, conductor changes, load coils, bridge tap lines, ground shift) or environmental (bad or dry joints, broken insulation, water ingress, short circuit).

Events Qualification and Maintenance: When the service has been installed, several events may cause poor performance and random interruptions to the service. Use ALT2000 to run Service Measurements to detect events such as impulsive noise, microinterruptions or noise immunity. ALT2000 can also inject a white noise signal into the active line and then increase the signal.

DMM Measurements: With ALT2000 you can measure voltage, resistance, insulation and current across the connectors, as well as between each connector and earth (ground). Faults on a line may be due to poor line insulation caused by age or contamination. At voice band frequencies this may result in extra noise on the line, and at the higher xDSL frequencies the service may not work at all. Measuring the insulation resistance with a high voltage test (95V) will quickly prove if the insulation is up to standard, thus saving time in deciding whether a line can be repaired or needs replacing. With the RLC bridge you can measure loop resistance and capacitance, as well as calculate the loop length.

With the adoption of "SAPE-KIT" ALT2000 allows SELT "Single-End Line Testing" for automatic xDSL line qualification and maintenance, with slightest employment of field technicians and without the least trouble at the subscribers.
		For accurate line qualification & certification are suggested DELT "End-to-End" measurements, using two ALT2000 at the opposite side of the line. After a short set-up and right masks selection, the Master instrument controls the Slave using the same line under test.
			The measurement results are displayed with high resolution graphics (320 x 240) where are also displayed the threshold areas, extracts form the international regulations, and Pass/Fail indication.
The TDR Faults Locator is optimized for various line troubles: permanent or random interruptions, open and short circuit, split pair, water ingress and others impedance mismatching.		The measurements can be printed and/or exported to PC. The "ALT2000 Utility" PC program, downloadable from this web site, allows the graphic conversion of exported files for the test reports editing.
	The Spectrum Analyzer of ALT2000 connected to the active line allows to measure the bandwidth of numeric stream energy by the PSD Power Spectrum Density function. This not invasive measurement allows to find the stream type (ISDN, HDSL, E1, ADSL etc.)

To Contact us:
In Australia Phone: (03) 9023 0189
International Phone: +613 9023 0189
In Australia Fax: (03) 9700 0583
International Fax: +613 9700 0583
Enquiry: info@telecomtest.com.au
Accounts: accounts@telecomtest.com.au