Electronic test equipment is used to create signals and capture responses from electronic Devices Under Test (DUTs). In this way, the proper operation of the DUT can be proven or faults in the device can be traced and repaired. Use of electronic test equipment is esse
ntial to any serious work on electronics systems.
Practical electronics engineering and assembly requires the use of many different kinds of electronic test equipment ranging from the very simple and inexpensive to extremely complex and sophisticated such as Automatic Test Equipment.
Generally, more advanced test gear is necessary when developing circuits and systems than is needed when doing production testing or when troubleshooting existing production units in the field.
ntial to any serious work on electronics systems.Practical electronics engineering and assembly requires the use of many different kinds of electronic test equipment ranging from the very simple and inexpensive to extremely complex and sophisticated such as Automatic Test Equipment.
Generally, more advanced test gear is necessary when developing circuits and systems than is needed when doing production testing or when troubleshooting existing production units in the field.
Types of test equipment
Basic equipment
The following items are used for basic measurement of voltages, currents, and components in the circuit under test.
* Voltmeter (Measures voltage)
* Voltmeter (Measures voltage)
* Ohmmeter (Measures resistance)
* Ammeter, e.g. Galvanometer or Milliameter (Measures current)
* Multimeter e.g., VOM (Volt-Ohm-Milliameter) or DMM (Digital Multimeter)
The following are used for stimulus of the circuit under test:
* Power supplies
* Signal generator
* Digital pattern generator
* Pulse generator
The following analyze the response of the circuit under test:
* Oscilloscope (Measures all of the above as they change over time)
* Oscilloscope (Measures all of the above as they change over time)
* Frequency counter (Measures frequency)
And connecting it all together:
* Test probes
And connecting it all together:
* Test probes
Advanced or less commonly used equipment
Meters
* Solenoid voltmeter (Wiggy)
* 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 charge)
Probes
* RF probe* Signal tracer
Analyzers
* 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)
Signal-generating devices
* Signal generator
* Frequency synthesiser
* Function generator
* Digital pattern generator
* Pulse generator
* Signal injector
Miscellaneous devices
* Continuity tester
* Cable tester
* Hipot tester
* Network analyzer (used to characterize components or complete computer networks)
* Test light
* Transistor tester
* Tube tester
* The Energy Detective
* Electrical tester pen
* Receptacle tester
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