ZL2120 cable fault tester conforms to the fast development of industry electric and IT, add embedded computer control system, network service business, and systematic USB communication technology, improve the functions, value and operation. Specially provide an independent management software for under-earth wire. The system includes host, fault locator and cable trace detector for all kinds of fault detection, cable trace and under-earth depth finding, cable document material management and for the open/short circuit fault test of Coaxial communication cable/local cable.

1, First adopt embedded computer control system, whole system is including fault testing, trace finding, accurate location, Li-ion battery for power supply, easy to move and operation.
2, First adopt 12.1 inch big screen LCD and touch mouse, computer Win XP OS, equipped cable fault testing software and cable material management software.
3, Adopt new USB communication port，stable sampling signal, adaptive sampling frequency, minimum: 6.25MHz, max :100MHz, five kinds of frequency for the selection, improve the test precision and applicable for the long cable requirement.
4, Realize software auto search fault/auto display, double cursor accuracy is 0.15.
5, Strong function of waveform processing and network service. Randomly compress and expand waveform, same screen display two approaching standard waveforms for comparison and analysis, reduce the error.
6, Wireless network card (selectable) for user to check the online material at any time.
7, 20G memory for the storage of test waveform and object wiring diagram, management software can do perfect cable document, provide reference and help for cable maintenance and accurate location. 
8, Absorb German technology, directly show the distance between tester and fault location.
9, New designed combined type sampler instead of onsite wiring. It has direct waveform display, easy analysis, quarantined with high voltage and so on characteristics.

1, Technical parameters of fault tester：

(1)Test the open/short circuit, low resistance, high resistance leakage, high resistance flashover fault of different voltage grade, different cross section, different dielectric and different material electric cable.
(2)Test the velocity of radar wave of any known length cable.
(3)Test cable trace and depth.
Test distance：>40km       Shortest test distance（blind spot）: 5-10m
Accuracy of locating：±0.2m       Test error system: <±1%
Resolution：V/50m；(V:m/μs, software cursor :0.15m) 
Sampling frequency：6.25MHz, 10MHz, 25MHz, 50MHz, 100MHz, (adaptive pulse width）
Power and loss:  AC 220V±10%　15W　/ DC 12V（7AH）　< 20W

Idle time: consecutive 1.5H.
Management: cable depth trace distribution diagram. Document of all cable materials in user management zone include：cable trace allocation diagram, number, start and end location, depth and time, cable dielectric, contact location, maintenance record, root cause of fault, test report, cable test record and so on information.

2, Technical parameters of trace detector

Signal frequency：15KHz Sine wave    

Output power：Pomax≥100W
Output impedance：Zo=Zc(Cable characteristics of resistivity)   

Oscillation mode: made and break
Host weight：9.8kg         

Environment temp：－10℃～＋40℃
Size：180mm×300mm×400mm    

RH： ≤85%（25℃）