Hi Andrew,
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We ran the unit with a fully exposed sensor and couldn't get data, let alone an image. I was expecting at least a saturated image, but didn't even get that.
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So there is another fault in your camera?
It doesn't work at all?
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Dunno about your unit, but on the 8L, that pot is TINY and very sensitive.
It is also inside the cooled chamber section and I assume that is more for thermal stability, as it would have been much more sensible to have it external to the sealed chamber otherwise.
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Yes- it looks very tiny & also of poor quality.
It should be a long 20 turn pot if it was that critical.
It is not inside the sealed chamber for the KAF8300 sensor but it is
in the cooled area.
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Have attached what we got with the unit at first.
Tweaking the pot merely appears to adjust the DC biasing of the trace
( Looking at your linked doco for the QHY9, i see their vertical scale is 2V, ie the waveform is really 4V pk-pk. I cant read the scale in the 8L pdf, but had deduced thats what we were expecting, and it was merely a bias tweak we were doing )
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But your unit has another fault.
It could be just a bias pot - I'd have to see what happens when I adjust it.
What is the bandwidth of your CRO?
cheers
Allan