It looks like there is some constant higher frequency hash or pulses on the FG's output..
Here is a pix of a 1KHz/0.1V square wave.
Same again but with a sine wave.
With signal level reduced to zero, the noise is still there.
With the FG turned off but still connected, all is well.
Have tried using a linear power supply and adding caps across C9 and C10. but to no avail.
I hadn't used the FG for a while, so not sure if the problem was always there.
Maybe something needs setting to default?
Any suggestions, Thanks!
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