H1-01:

• Clock B- trace for chip address 2 on the p-side was broken.
• Sent back to Italy.

H1-04:

• Can't read p-side from the right. Bad tail connection somwhere?

H1-25:

• Arrived with 9 Ohm short between A0 and A5 on the p-side.
• A0-A5 resistance increased after power up to 250 Ohms.
• Can't read n-side or p-side from the right. Bad tail connection somwhere?

ALL:

• The "Chip 9" problem is back, only not with chip 9.
• Coherent bursts of noise.
• Still only on p-side.
• Not seen in Italy.
• Source remains unknown.

Noise vs channel



Normal channel (left) and noisy channel (right) for H1-01.

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Postscript Links

• All of the tables in this page.

• Gain and offsets summary, 100 ns.
• Gain and offsets summary, 400 ns.
• Threshold scan summary, Qn=2, 100 ns.
• Threshold scan summary, Qn=3, 100 ns.
• Threshold scan summary, Qn=4, 100 ns.
• Threshold scan summary, Qn=2, 400 ns.
• Threshold scan summary, Qn=3, 400 ns.
• Threshold scan summary, Qn=4, 400 ns.

• Gain and offsets summary, 100 ns.
• Gain and offsets summary, 400 ns.
• Threshold scan summary, Qn=2, 100 ns.
• Threshold scan summary, Qn=3, 100 ns.
• Threshold scan summary, Qn=4, 100 ns.
• Threshold scan summary, Qn=2, 400 ns.
• Threshold scan summary, Qn=3, 400 ns.
• Threshold scan summary, Qn=4, 400 ns.

• Gain and offsets summary, 100 ns.
• Gain and offsets summary, 400 ns.
• Threshold scan summary, Qn=2, 100 ns.
• Threshold scan summary, Qn=3, 100 ns.
• Threshold scan summary, Qn=4, 100 ns.
• Threshold scan summary, Qn=2, 400 ns.
• Threshold scan summary, Qn=3, 400 ns.
• Threshold scan summary, Qn=4, 400 ns.