xDSL Testers

GAO’s xDSL testers are specialized devices used to test and analyze the performance and quality of xDSL (Digital Subscriber Line) connections. xDSL refers to a family of technologies that provide high-speed data transmission over traditional copper telephone lines. The most common types of xDSL include ADSL (Asymmetric DSL), VDSL (Very-high-bit-rate DSL), and VDSL2. Our xDSL testers are used by technicians, network engineers, and service providers to troubleshoot and validate xDSL connections. These testers typically offer a range of features and capabilities to diagnose, monitor, and optimize xDSL lines.

GAO’s xDSL testers are composed of a test interface, display screen, control buttons/keypad, processor, memory, power source, network connectivity, test probes/cables, and firmware/software.

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GAO Tek Telecom test PDA with xDSL Tester DMM Function and Speedtest Telecom Multi Meter

GAO Tek Telecom test PDA with xDSL Tester DMM function and Speedtest Telecom Multi Meter is a versatile and efficient handheld device designed for telecom professionals.

GAO Tek VDSL Tester Support ADSL / VDSL / OPM / VFL / TDR / Tone Tracker, all-in-one unit DMM Telecom test ADSL Tester

GAO Tek VDSL Tester is a versatile and all-in-one unit designed to support various telecom testing functions.

GAO Tek VDSL VDSL2 Tester ADSL WAN LAN xDSL Line Test Equipment with TDR Cable Fault Locator Telecom Test Multi-Meter

GAOTek VDSL VDSL2 Testers ADSL WAN LAN xDSL Line Test Equipment are comprehensive and versatile tools designed for telecom professionals.


GAOTek ADSL and VDSL IP DSLAM has high-capacity 10 Gbit/s Passive Optical Network (PON) Optical Networking Units (ONUs) for resilient, high-density Fibre-To-The-Curb (FTTC) and Fiber-To-The-Building (FTTB) services.


GAOTek ADSL VDSL VDSL2 tester is a handheld intelligent PDA which is especially designed for the telecommunication field engineers operation and maintenance.

GAOTek Antenna Analyzer xDSL Tester

GAOTek antenna analyzer xDSL Tester has placed increased demands on wireless professionals and contractors, who install, maintain, and troubleshoot wireless communication networks.

GAOTek Basic ADSL Tester for xDSL

GAOTek Basic ADSL Testers for xDSL are specially designed for solid line test and maintenance.

GAOTek Battery Inner Resistance xDSL Tester

This Battery Inner Resistance xDSL Tester has working temperature of 14 °F to 104 °F, voltage resolution of 1 mv and a 3.7 V lithium battery.

GAOTek Cable Antenna Analyzer

The GAOTek Cable Antenna Analyzer has an operating temperature of 50 °F to 131 °F, resolution of 0.5 kHz, and frequency range 2 MHz to 4.4 GHz.

GAOTek Cable Antenna Analyzer

GAOTek cable antenna analyzer designed specifically for carriers, wireless professionals and contractors who install, maintain and troubleshoot wireless communications networks, the E7000 Series of Cable & Antenna Analyzers provide all necessary measurement functions and performance to accurately diagnose and verify the site’s cable and antenna system and RF connectors, as well as basic fiber-feedline testing.

GAOTek Cable Network XDSL Tester

This Cable Network xDSL Tester has vibration of 5 Hz to 500 Hz, operating temperature of 32 ℉ to 113 ℉, length of 300 m, and drop of 1 m.

GAOTek Contact Resistance Checker

The GAOTek Contact Resistance Checker has a minimum resolution of 0.1 µ Ω, input voltage of 5 V, and working temperature of – 10 ° F to 104 ° F.

GAOTek Contact Resistance Checker

This Contact Resistance Checker Tester has minimum resolution of 0.1 µ Ω, input voltage of 5 v, and working temperature of - 10 ° F to 104 ° F.

GAOTek Contact Resistance XDSL Tester

GAOTek contact resistance xDSL Tester adopt the new technology of the power supply, which can continuously output large current for a long time.

GAOTek Copper Tester

GAOTek copper tester, with small size, specially designed for xDSL line test (xDSL include ADSL, ADSL2, ADSL2+, READSL, VDSL2 etc) and maintenance.

GAOTek Data Integrator xDSL Tester

GAOTek data integrater xDSL tester is a multi-functional portable comprehensive test platform integrating E1, V 35, 10, 100, 1000 M or 10 G Ethernet, optical power meter test and other physical interfaces.

GAOTek Dynamic Range XDSL Testers

This Dynamic Range xDSL Testers has accuracy of ±3 dB, frequency of 2 kHz, test range of 91.4 mi, output power of ≥-5 dBm and uncertainty of ±5 %.

GAOTek Earth Resistance XDSL Tester

This Earth Resistance xDSL Tester has working temperature of 14 ℉ to 122 ℉, resistance resolution of 0.01 Ω, and power consumption of 750 mA.

GAOTek Emulation XDSL Line Tester

GAOTek emulation xDSL line testers are multi-functional hand-held VDSL2 test instrument with small size, specially designed for xDSL line test (xDSL include ADSL, ADSL2, ADSL2+, READSL, VDSL2 etc.) and maintenance.

GAOTek Fault Locator XDSL Testers

This Fault Locator xDSL Testers has attenuation of 0 to 63.5 dB, noise margin of 32 dB, upstream channel of 1.2 Mbps, and Downstream of 0 to 24 Mbps.

GAOTek Fiber Cable xDSL Tester

This Fiber Cable xDSL Tester has a display of 3.5 in (8.89 cm), a test distance of 37.28 mi (60 km) and an event dead zone of 8.20 ft (2.5 m).

GAOTek Fiber Insertion xDSL Tester

GAOTek fiber insertion xDSL Tester is widely applied to test insertion and return loss for Optical fiber jumpers, optical devices, and optical transmission systems.

GAOTek Fiber Optic XDsl Tester

This Fiber Optic xDsl Tester has wavelength of 1310 nm or 1550 nm, distance setting of maximum 49.7 mi (80 km), and Event Dead Zone of 3.2 ft.

GAOTek Fiber Optic XDsl Tester

GAOTek fiber optic xDsl tester is a high cost-effective choice. The dynamic range is from 26dB to 35dB.

GAO’s xDSL testers have the following functions:

  • Line Testing: Our xDSL testers can perform various line tests to assess the quality and stability of the xDSL connection. These tests include measuring parameters such as signal strength, line attenuation, noise levels, and signal-to-noise ratio (SNR).
  • Physical Layer Testing: GAO’s xDSL testers can verify the physical layer functionality of the xDSL link, ensuring that the connection is established correctly. This includes checking the synchronization between the modem and the central office equipment, verifying the presence of proper line coding, and assessing the line stability.
  • Connection Speed Measurement: Our xDSL testers can measure the actual connection speed or throughput of the xDSL link. This allows users to determine the actual data transfer rates and compare them against the expected speeds or service level agreements (SLAs).
  • Fault Diagnosis: In case of connectivity or performance issues, our xDSL testers can assist in diagnosing faults or problems within the xDSL network. By conducting tests and analyzing the results, they can identify potential causes of issues such as line faults, signal degradation, or equipment malfunctions.
  • Bit Error Rate Testing: By generating controlled test signals and comparing them to received signals, GAO Tek’s xDSL testers can measure the bit error rate (BER) of the xDSL connection. This provides an indication of the transmission quality and helps assess the overall performance of the link.

GAO Tek’s xDSL testers are rugged, versatile, and precision measurement instruments. They comply with applicable industry standards such as ITU-T G.992.1, ITU-T G.993.1, ANSI/TIA/EIA-568-B.2, ETSI TS 101 385-1, and DMTF TR-111.

GAO Tek’s xDSL testers help our customers comply with relevant U.S. government regulations such as:

  • Federal Communications Commission (FCC)
  • Equipment Authorization (EA) Requirements for Telecommunications Terminals
  • International Electrotechnical Commission (IEC)

GAO Tek’s xDSL testers help our clients in complying with relevant Canadian government regulations such as:

  • Telecommunications Equipment Certification Body (TECB):
  • Electrical Safety Authority (ESA)
  • Canadian Radio-television and Telecommunications Commission (CRTC)

GAO’s xDSL testers have the following applications:

  • Fault location: GAO’s xDSL testers can utilize reflection testing techniques to identify impedance mismatches or discontinuities in our xDSL line, aiding in the precise location of faults. XDSL testers equipped with TDR functionality can measure the time it takes for a signal to reflect back from a fault, enabling technicians to estimate the distance to the fault and its nature (e.g., open or short circuit).
  • Line quality testing: Our xDSL testers can perform crosstalk analysis to measure the level of interference caused by neighboring lines, helping to identify potential issues affecting signal quality. In addition to measuring signal attenuation and data transfer rate.
  • Troubleshooting: GAO Tek’s xDSL testers equipped with protocol analysis capabilities can capture and analyze network packets, enabling technicians to identify and diagnose protocol-related issues that may be causing slow speeds, dropped calls, or intermittent service. Our xDSL testers can perform loopback tests, where the signal is looped back within our xDSL line, allowing technicians to isolate and troubleshoot issues within specific segments of the line, such as local loops or customer premises equipment.
  • Installation: Our xDSL testers can verify the proper wiring connections between different components of our xDSL equipment, ensuring correct installation and minimizing potential issues. Our xDSL testers can verify the firmware versions of modems and routers, ensuring that they are up-to-date and compatible with our xDSL network, which can prevent performance issues or incompatibility-related failures.
  • Training: Our xDSL testers can simulate various scenarios, such as line faults, signal degradation, or network congestion, allowing technicians to practice troubleshooting and problem-solving in a controlled environment.

Our xDSL testers can be shipped overnight within the continental U.S. and Canada, and can be shipped globally.