This kit is really not for beginners having surface mount devices for all resistive components. That said, it is a very impressive little machine. Operating from 8-12V DC, the unit develops +5V, -5V, and 3.3V internal supplies using a switching regulator for the IC regulated -5V supply. The front end uses a quad CMOS op amp to provide the input attenuator and DC restore for the uP that handles only positive voltages. As a result, there is a +1.6V offset to the input signal going to the uP. This needs to be taken into account when looking at the resulting display. The time base allows for very long acquisition periods, many seconds, if you are looking for very slow moving waveforms. The color display is excellent. Caveat: this is not a high frequency scope having 200kHz as a maximum spec'd input frequency. It would be nice if there was a case to put it into.

This kit is really not for beginners having surface mount devices for all resistive components. That said, it is a very impressive little machine. Operating from 8-12V DC, the unit develops +5V, -5V, and 3.3V internal supplies using a switching regulator for the IC regulated -5V supply. The front end uses a quad CMOS op amp to provide the input attenuator and DC restore for the uP that handles only positive voltages. As a result, there is a +1.6V offset to the input signal going to the uP. This needs to be taken into account when looking at the resulting display. The time base allows for very long acquisition periods, many seconds, if you are looking for very slow moving waveforms. The color display is excellent. Caveat: this is not a high frequency scope having 200kHz as a maximum spec'd input frequency. It would be nice if there was a case to put it into.

This kit is really not for beginners having surface mount devices for all resistive components. That said, it is a very impressive little machine. Operating from 8-12V DC, the unit develops +5V, -5V, and 3.3V internal supplies using a switching regulator for the IC regulated -5V supply. The front end uses a quad CMOS op amp to provide the input attenuator and DC restore for the uP that handles only positive voltages. As a result, there is a +1.6V offset to the input signal going to the uP. This needs to be taken into account when looking at the resulting display. The time base allows for very long acquisition periods, many seconds, if you are looking for very slow moving waveforms. The color display is excellent. Caveat: this is not a high frequency scope having 200kHz as a maximum spec'd input frequency. It would be nice if there was a case to put it into.

i just ordered it. I like such kits. i was searching in the last time for a cheap tester for waveforms of signal forms, to put in the pocket and to take it if there is something strange behavior of sund signals or TTL signals of RC PWM and so on. You take not the large oszi with you every time and mor time something happens if you don't have anything with you. Ths small part is simethng for the toolkit...

i just ordered it. I like such kits. i was searching in the last time for a cheap tester for waveforms of signal forms, to put in the pocket and to take it if there is something strange behavior of sund signals or TTL signals of RC PWM and so on. You take not the large oszi with you every time and mor time something happens if you don't have anything with you. Ths small part is simethng for the toolkit...

i just ordered it. I like such kits. i was searching in the last time for a cheap tester for waveforms of signal forms, to put in the pocket and to take it if there is something strange behavior of sund signals or TTL signals of RC PWM and so on. You take not the large oszi with you every time and mor time something happens if you don't have anything with you. Ths small part is simethng for the toolkit...