Difference between revisions of "Noise studies"
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|width="400pt"|[[Image:outside_cage_pre_ground_to_shield_4MHz.jpg|thumb|none|400px|Noise - zoom on 4MHz - cable shield connected to preamp ground, 1950V, 90/10 premix]] | |width="400pt"|[[Image:outside_cage_pre_ground_to_shield_4MHz.jpg|thumb|none|400px|Noise - zoom on 4MHz - cable shield connected to preamp ground, 1950V, 90/10 premix]] | ||
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HV on (preamp ground & cable shielding connected) | HV on (preamp ground & cable shielding connected) | ||
{| border="1" cellpadding="2" | {| border="1" cellpadding="2" | ||
| − | |width="400pt"|[[Image:ch16_2kV.jpg|thumb|none|400px|Noise, 2000V, 90/10 premix]] | + | |width="400pt"|[[Image:ch16_2kV.jpg|thumb|none|400px|Noise, 2000V, 90/10 premix, 20mV/div, 20μs/div]] |
| − | |width="400pt"|[[Image:ch16_2kV_4MHz.jpg|thumb|none|400px|Noise - zoom on 4MHz, 2000V, 90/10 premix]] | + | |width="400pt"|[[Image:ch16_2kV_4MHz.jpg|thumb|none|400px|Noise - zoom on 4MHz, 2000V, 90/10 premix, 20mV/div, 2μs/div]] |
|} | |} | ||
HV off (preamp ground & cable shielding connected) | HV off (preamp ground & cable shielding connected) | ||
{| border="1" cellpadding="2" | {| border="1" cellpadding="2" | ||
| − | |width="400pt"|[[Image:ch16_0kV.jpg|thumb|none|400px|Noise, 0V, 90/10 premix]] | + | |width="400pt"|[[Image:ch16_0kV.jpg|thumb|none|400px|Noise, 0V, 90/10 premix, 20mV/div, 20μs/div]] |
| − | |width="400pt"|[[Image:ch16_0kV_4MHz.jpg|thumb|none|400px|Noise - zoom on 4MHz, 0V, 90/10 premix]] | + | |width="400pt"|[[Image:ch16_0kV_4MHz.jpg|thumb|none|400px|Noise - zoom on 4MHz, 0V, 90/10 premix, 20mV/div, 2μs/div]]] |
|} | |} | ||
Revision as of 09:35, 28 July 2010
Noise studies - scope traces for ch16, which shows the largest amount of 4MHz pickup. The left hand side plots also show some cosmics.
After connecting the preamp ground to the preamp end of the cable shielding
HV on (preamp ground & cable shielding connected)
HV off (preamp ground & cable shielding connected)
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