Types of test equipment


Types of test equipment
Basic equipment
Voltmeter (Measures voltage)The following items are used for basic measurement of voltages, currents, and components in the circuit under test.
  • Ohmmeter (Measures resistance)
  • Ammeter, e.g. Galvanometer or Milliameter (Measures current)
  • Multimeter e.g., VOM (Volt-Ohm-Milliameter) or DMM (Digital Multimeter) (Measures all of the above)
  • RLC Meter e.g., RLC meter or Resistance,Inductance and capacitance meter (measure RLC values)
  • Power supplies
  • Signal generator
  • Digital pattern generator
  • Pulse generator
  • Frequency counter (Measures frequency)
  • Test probes
The following are used for stimulus of the circuit under test:
Oscilloscope (Displays voltage as it changes over time)The following analyze the response of the circuit under test:
And connecting it all together:
Advanced or less commonly used equipment
Meters
  • Solenoid voltmeter (Wiggy)
  • Clamp meter (current transducer)
  • Wheatstone bridge (Precisely measures resistance)
  • Capacitance meter (Measures capacitance)
  • LCR meter (Measures inductance, capacitance, resistance and combinations thereof)
  • EMF Meter (Measures Electric and Magnetic Fields)
  • Electrometer (Measures voltages, sometimes even tiny ones, via a charge effect)
Probes
  • AnalyzersRF probe
  • Signal tracer
  • Logic analyzer (Tests digital circuits)
  • Spectrum analyzer (SA) (Measures spectral energy of signals)
  • Protocol analyzer (Tests functionality, performance and conformance of protocols)
  • Vector signal analyzer (VSA) (Like the SA but it can also perform many more useful digital demodulation functions)
  • Time-domain reflectometer (Tests integrity of long cables)
  • Semiconductor curve tracer
Signal-generating devices
  • Miscellaneous devices Signal generator usually distinguished by frequency range (e.g., audio or radio frequencies) or waveform type (e.g., sine, square, sawtooth, ramp, sweep, modudulated, ...)
  • Frequency synthesiser
  • Function generator
  • Digital pattern generator
  • Pulse generator
  • Signal injector
  • Boxcar averager
  • Continuity tester
  • Cable tester
  • Hipot tester
  • Network analyzer (used to characterize an electrical network of components)
  • Test light
  • Transistor tester
  • Tube tester

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