1. Oscillator have 2 pin. What is there output voltage & waveform if I put probe on CRO., consider 20Mhz on 89C51. It must be sine wave.
2. I put a probe on XTALIN w.r.t ground, with power on to MCU, waveform is getting distorted & no signal shown. Might be capacitance of my probe is too large.
3. Then I put a probe on XTALout w.r.t ground, then a +ve dc level shifted sine wave is shown.
4. Then I put a probe on XTALIN & ground reference of CRO on XTALOUT,
I got wierd waveform.
2. I put a probe on XTALIN w.r.t ground, with power on to MCU, waveform is getting distorted & no signal shown. Might be capacitance of my probe is too large.
3. Then I put a probe on XTALout w.r.t ground, then a +ve dc level shifted sine wave is shown.
4. Then I put a probe on XTALIN & ground reference of CRO on XTALOUT,
I got wierd waveform.