Electronics test and test equipment are essential elements of electronics and radio. Electronic equipment can develop failures, or it may not work properly when it is built. In order to discover whether a circuit is working, and then where the problem is located, it is necessary to use various forms of test equipment.
The items of test equipment that are commonly found are multimeters, analogue and digital (DMM - digital multimeter), oscilloscopes, and under some circumstances more specialised test equipment including spectrum analyzers may be used.
The multimeter forms one of the most widely used items of test equipment. Digital multimeters, DMMs have taken over from their analogue counterparts, although they are still available and used quite often.
RF test equipment
Test equipment used for RF applications includes a large spectrum of test equipment.
While multimeters are able to perform many tests, oscilloscopes are able to provide a unique insight into the working of an electronics circuit, because an oscilloscope is able to show the waveforms as well as being able to measure them.
Logic probes are simple and easy to use test instrumetns used to test simple logic circuits and ascertain logic levels.