TDR-TA3.7USB allows you to define: opens, shorts, splices, splits and re-splits, bridged taps, water damage, crimps, cuts, smashed cables, shorted conductors, system components, and a variety of other fault conditions. In addition, TDR-TA3.7USB can be used to test reels of cable for length, shipping damage, cable shortages, cable usage, inventory management and documenting cable systems.
Distance – up to 64 km; Accuracy 12.5 cm, Pulse width from 10 ns to 50 μs.
Purpose The TDR RI-307USB can be used to:
Locate wet/corroded splices
Locate bridged taps
Locate unknown splices
Clear lines for ISDN, HDSL, ADSL
Find in-line components
Locate water in the cable
Locate load coils
Find splits and re-splits
Aid in measuring and verifying new or partial cable reels
Locate crushed, pinched or kinked cables
Locate opens, shorts, and partials in the cable
Locate bullet holes in the cable
Capture intermittent faults
Locate problems caused by construction
Document or map cable networks and conditions
Locate problems causing excessive loss of either AC or RF
Made in the form of remote unit that connects to a PC via USB;
Control and display of measurement results on a PC;
Powered via USB (requires no batteries or power supply);
Direct control of measurement parameters to quickly and visually manage your measurements without wasting time to switch between menus;
High speed sensing allows the operator to see the most “live” image on the screen;
Dual-cursor measuring system can measure the distance between any two points of the trace – to exclude connecting cable length, measure the length of the cable becoming soaked, or the distance
between the two connectors, the device indicates the distance to the first and second cursor, and the distance between them;
Automatic storing of measurement parameters.
Excellent measurement performance
A wide scale range from 62.5 m to 64 km;
Small instrumental error of distance measuring – 0.01% … 0.2% of reading allows to localize defects with an accuracy of up to 12.5 cm;
Wide pulse widths from 10 ns to 50 μs allows to the operator to select the optimum ratio resolution of the device and overlapped decay – in short segments cable or cables with little attenuation is better to use
short pulses to provide the best resolution, on long cables or cables with high attenuation for
maximum measurment distance, it is better to use longer probe pulse widths;
The high sensitivity of the receiving channel – 1 mV (dynamic range 80 dB);
Noise Filters – Digital averaging 1 … 128 times can effectively suppress asynchronous noise;
Two parallel physical channels to effectively suppress synchronous noise:
if the test cable lines are parallel (for example, two-phase), the interference in each of them the same,
so to suppress the noise in the wavefowm of the damaged line it is enough to subtract from it the waveform of parallel undamaged line;
identify differences of the lines in real time without the need to save waveform to the memory.
Special modes of measurement and analysis
Simultaneous display of up to 5 waveforms – device has ability to display waveforms from two physical inputs and three traces of non-volatile memory;
Mode “difference” (point-wise subtraction) designed to detect differences in the TDR test, can be applied both to trace the physical channels and for the traces of memory in any combination in real time;
Mode “crosstalk detect” is intended to identify locations entangling pairs in couplings or twistings;
Mode “Capture” increases the effectiveness of the device to detect unstable defects (“flickering” defects) – this mode, the device stores the on-screen waveform arbitrarily long period of time, so that short-term events are not missed.