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Measurement Techniques Using Oscilloscope for Radar Testing

This article discusses the measurement methods using an oscilloscope for radar-related testing equipment such as pulse counters, signal sources, and power meters.

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Measurement Techniques Using Oscilloscope for Radar Testing

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  1. 오실로스코프를 이용한 측정방법 KE Lee in Tektronix

  2. 레이다 관련 측정장비 -. Oscilloscope -. Pulse Counter -. Signal Source -. Power Meter .

  3. 오실로스코프 측정기능 -. 전압 -. 전류 -. 주파수 -. Amplitude -. 지터 -. Power .

  4. 전압 -. 최소/최대 측정전압: 1mV-40kV -. probe name: BNC-P6015 - 감쇄비 : 1X,1000X 전류 -. 최대 측정전류: 20kA Peak -. probe name: P6021 w/CT4 - 감쇄비 : 1000X . .

  5. 주파수 -. 최대 측정 주파수: 6GHz -. name: TDS6604 지터 -. Period, Cycle, Random, Total jitter. Power -. True, 역률, Dynamic Road, Peak Finder .

  6. 지터(Jitter)란? • What is jitter? • “The deviation of an edge from where it should be” • Jitter is caused by: • (among other things) • Thermal noise • Crosstalk • Injected noise (EMI/RFI) • Circuit instabilities .

  7. Jitter Measurement Summary 0.0ns 0.990ns 2.000ns 2.980ns 4.000ns P1 P2 P3 P4 period 0.990ns 1.010ns 0.980ns 1.020ns cy-cy 0.020ns -0.030ns 0.040ns TIE -0.010ns 0.000ns -0.020ns 0.000ns Period Jitter = 18.3ps RMS (0.990/1.010/0.980/1.020) Cy-Cy Jitter = 36.1ps RMS (0.020/-0.030/0.040) TIE = 9.6ps RMS (-0.010/0.000/-0.020/0.000) .

  8. Total Jitter • Total jitter is the sum of all these effects Tj=(N*Rj)+Dj - Total Jitter where N is desired sigma Deterministic jitter . Random components

  9. ET Cursor Method .

  10. TDSJIT3 Real Time Method • Proprietary Rj/Dj Separation and BER Estimation • Based on real time acquisition data • Includes Golden PLL TIE measurements • Spectral Analysis used to decompose jitter • Wide noise margin – works even with substantial system noise • Works with short or long data repeats – no pattern details required (you provide bit rate and pattern length) • Trigger at any random point in your data • Works with CSA7000, TDS5000, TDS6000, TDS7000 instruments • Results for Rj, Dj, Pj, DDj, DCD, BER .

  11. Power Supply and Measurements Core Loss B-H Analysis True Power Apparent Power Power Factor Current harmonic Total Harmonic Distortion (THD) L G D N S G 40KHz CLOCK Switching Loss RDS on SOA . Modulation Analysis

  12. Oscilloscope Based Power Measurement and Analysis for .

  13. TDSJIT3 – TIE: Rj/Dj - BER • Displays results for Rj/Dj • Rj/Dj results are only available for TIE and PLL TIE measurements • Rj/Dj is a two step process: make the TIE measurement; then calculate Rj/Dj • Rj/Dj requires a repeating pattern, such that 100 repeats are captured in a single acquisition • You must know and enter the pattern length Rj is RMS, Dj is Pk-Pk, Tj is Pk-Pk …

  14. THANK YOU FOR YOUR ATTENDANCE

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