Test Equipment<br />
overview<br />Measuring things<br />General purpose electronic measuring equipment<br />Radio test equipment<br />Other eq...
Types of measurement equipment<br />Electronic<br />Voltage<br />Current<br />Resistance<br />Radio<br />SWR meter<br />Ty...
Measurement Systems<br />Effect the system under test (Loading problem)<br />Voltmeters takes current<br />Ammeters drop v...
Volt meters<br />Analogue meter<br />Magnetic coil in a magnetic field<br />Spring<br />Digital meter<br />A-to-D converte...
Voltmeter<br />Measure in parallel<br />High resistance in the meter<br />
Voltmeter<br />Loading problem<br />25 V each resistor<br />Meter internal voltage = 1 MW<br />1/R =  1/1MW + 1/1MW = 500 ...
Voltmeter<br />Accuracy<br />99% accuracy<br />95% accuracy  <br />
Voltmeter<br />Ranges<br />Shunt circuits<br />
Ammeters<br />Wired in series<br />Low internal resistance<br />Ranges<br />Shunt circuit<br />
Ohm meters<br />Ammeter + resister and battery<br />Using in circuit:<br />Turn off power<br />Isolate the component<br />
Multi-meter<br />Voltage, ammeter and ohm meter in one.<br />
Ammeters<br />Shut circuit<br />
Radio Test Equipment<br />Antenna output<br />
Radio Test Equipment<br />
Other equipments<br />Oscilloscope<br />Signal Generator<br />
Standards<br />National standards agency<br />International standard agency<br />
Standards<br />Weston cell<br />Anode of cadmium and mercury<br />Cathode of mercury<br />cadmium sulfateoctahydrate<br />...
Standards<br />
Questions?<br />
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Test equipment

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test equipment for an FRO lecture

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Test equipment

  1. 1. Test Equipment<br />
  2. 2. overview<br />Measuring things<br />General purpose electronic measuring equipment<br />Radio test equipment<br />Other equipment<br />Standards<br />
  3. 3. Types of measurement equipment<br />Electronic<br />Voltage<br />Current<br />Resistance<br />Radio<br />SWR meter<br />Types<br />Digital <br />Analogue<br />
  4. 4. Measurement Systems<br />Effect the system under test (Loading problem)<br />Voltmeters takes current<br />Ammeters drop voltage<br />Resistance of the measurement device<br />Accuracy<br />Imperfections in the test equipment<br />Scales<br />
  5. 5. Volt meters<br />Analogue meter<br />Magnetic coil in a magnetic field<br />Spring<br />Digital meter<br />A-to-D converter<br />
  6. 6. Voltmeter<br />Measure in parallel<br />High resistance in the meter<br />
  7. 7. Voltmeter<br />Loading problem<br />25 V each resistor<br />Meter internal voltage = 1 MW<br />1/R = 1/1MW + 1/1MW = 500 kW<br />I = 50V/1500 kW = 33 mA<br />V = 16.6 V<br />
  8. 8. Voltmeter<br />Accuracy<br />99% accuracy<br />95% accuracy <br />
  9. 9. Voltmeter<br />Ranges<br />Shunt circuits<br />
  10. 10. Ammeters<br />Wired in series<br />Low internal resistance<br />Ranges<br />Shunt circuit<br />
  11. 11. Ohm meters<br />Ammeter + resister and battery<br />Using in circuit:<br />Turn off power<br />Isolate the component<br />
  12. 12. Multi-meter<br />Voltage, ammeter and ohm meter in one.<br />
  13. 13. Ammeters<br />Shut circuit<br />
  14. 14. Radio Test Equipment<br />Antenna output<br />
  15. 15. Radio Test Equipment<br />
  16. 16. Other equipments<br />Oscilloscope<br />Signal Generator<br />
  17. 17. Standards<br />National standards agency<br />International standard agency<br />
  18. 18. Standards<br />Weston cell<br />Anode of cadmium and mercury<br />Cathode of mercury<br />cadmium sulfateoctahydrate<br />1.018638 V<br />
  19. 19. Standards<br />
  20. 20. Questions?<br />

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