I have a very jumpy threshold and am trying to hunt down where all the noise is coming from.
I found this rather odd waveform on Pin 4 of the ne5534. It should be -5 volts DC.
This funny signal only gets to the bypass caps (47uF+100nF) and 27Ohm resistor.
The -5v DC on the other...
2 results in 0.0041 seconds.
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Not so DC waveform of minus 5 volt rail at the ne5534 - could this be cause of noise problems
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Polymer started a topic My Surf PI Null Offset on Pin 6 of 5534 is different when measured with multimeter & oscilloscopein Tech ForumMy Surf PI Null Offset on Pin 6 of 5534 is different when measured with multimeter & oscilloscope
I am getting my Surf PI ready for testing with oscilloscope in the sea to see what happens when dunked.
I had adjusted the null a while back with a multimeter when I had no oscilloscope.
Now looking at the trace of Pin 6 I saw that the null is below zero by a whopping 320mV....