# Time Domain Reflectometry (TDR)

Time Domain Reflectometry (TDR)

Time Domain Reflectometry (TDR)

•TDR is a application of pulse technique and it is a echo technique.

•In this technique we observe and analyses  the reflected waveform in both electrical and optical media.

•TDR is useful in both electrical systems and telecom interconnections.

•TDR is divided into two types one is metallic time domain reflectometer and second is optical time domain reflectometer.

•TDR is use with high speed oscilloscope and step generator.

•TDR is use for finding discontinuity of a transmission line.

•TDR technique is also useful in testing interconnected paths in printed circuit board (PCB).

•TDR also shows the losses in the transmission line are series losses or shunt losses.

•This method is use when system is not in working condition.

•The step generator send the positive incident wave If the load impedance is equal to characteristics impedance of line then no wave will be reflected.

•The step generator send the positive incident wave If the load impedance is not equal to characteristics impedance of line then the wave will be reflected and which is observe in oscilloscope.

•From this we can also determine the length of the transmission line.

•This is easy and inexpensive technique.

## Related Questions

Description : Explain frequency domain synthesis. Which techniques fall into the category of frequency domain synthesis?

Description : sketch time period measurement by CRO.

Answer : Horizontal sweep is turned ON and the display appealing on the screen is adjusted by varying different control knobs provided on the front panel of CRO, till the signal is suitably displayed ... Where m=Number of division in one complete cycle n=Setting of time base =Time/Division

Description : What is the main advantage of using a time-domain reflectometer (tdr) to test a transmission line?

Answer : Tdr will indicate the nature of and the distance to or location of any faults.

Description : How To Manage Your Time ?

Answer : How To Manage Your Time Always finding yourself cramming to finish a project that should have been completed days ago? Do you run late for work every morning, then struggle to finish a workload in ... time efficiently. You'll soon find yourself stress-free and with plenty of time on your hands.

Description : How to Change the Time on a Computer ?

Answer : How to Change the Time on a Computer If you've just moved to a new time zone, or if you've just had your battery replaced, chances are you need to change or adjust the time on ... keeps displaying the wrong time even after several adjustments, you may need to have your CMOS battery replaced.