There are two types of logic analyzers which are given below,
- Logic timing analyzer
- Logic state analyzer
Logic timing analyzer :
In this device, the data is sampled according to a clock signal generated at regular intervals and stored in a memory. This stored information is then displayed in a timing waveform. It displays relation of each signal with time. The method is suited for the analysis of problems related to computer hardware. This method is called asynchronous measurement.
Logic state analyzer :
This uses the clock signals generated inside the measured equipment. The data is sampled and stored in the memory only when the signals are synchronized with the measured equipment. It gives binary or hexadecimal display. This method is called synchronous measurement. This is suitable for problems related with software. Now modern logic analyzer consists of both the above types of functioning in a single unit itself.
Logic analyzer