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Signal Conditioning

Signal Conditioning. Sensor Outputs. 4-20 mA Analog electrical transmission standard. Signal is a current loop where 4 mA represents zero percent signal and 20 mA represents the one hundred percent signal.

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Signal Conditioning

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Presentation Transcript

  1. Signal Conditioning

  2. Sensor Outputs

  3. 4-20 mA Analog electrical transmission standard • Signal is a current loop where 4 mA represents zero percent signal and 20 mA represents the one hundred percent signal. • The "live zero" at 4 mA allows the receiving instrumentation to distinguish between a zero signal and a broken wire or a dead instrument and provides good noise immunity. • The live zero also allows low-power instruments to be directly powered from the loop.

  4. Simple Control System

  5. Typical Sensor Resistances

  6. Typical Bridge Amplifier

  7. Typical Force-type Transducers

  8. High-Impedance Sensors

  9. Photodiode Operating Modes

  10. Dynamic Range of Illumination

  11. Use of a Guard Conductor

  12. 40 dB Gain Piezoelectric Amp

  13. Professional Microphone Preamp

  14. Balanced Transmission Circuit

  15. Differential Line Driver

  16. NTSC Video Signal

  17. NTSC Signal Generation

  18. NTSC and PAL Comparison

  19. Wide-Bandwidth Video Amplifier

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