Vermes
Advanced Member level 4
It is a small and useful device 2 in 1. It consists of double-sided board 17x70 with SMD components, connected to 1.2mb printer by a cable. On the top of the board there is a socket for connecting the cables to the digital analyzer. The analyzer is equipped with two inputs with a voltage amplifier adjustable in the range of 50mV to 5V. It can be used for testing digital inputs of smaller level of supply. Switch activates either the programmer or the analyzer.
Program from LINK can be used for the analysis of waveforms.
The resolution is 1.83 us – the same as in the program the analyzer operates on.
Resistors 10k...100k force low level on the inputs without the presence of external signal. Transistors used are typical BC847_smd, but they can be replaced with any other npn transistors.
Pictures:
Link to original thread (useful attachment) – Analizator cyfrowy z programatorem STK200