<p>15:04 bPlast was left powered over night. Powering up to check noise conditions - also to check shifting of Germanium baseline (no change observed).</p>
<p> TEMP OK.</p>
<p> Noise condition the same as yesterday when platform was moved in. Noise in aida01 and aida09 due to single channel failures (?). Attachments 1-3.</p>
<p> 9/16 <20kHz, max 176k</p>
<p>15:30 Changed drainwires ground from 4V (Ch3) -> 29.5V (Ch4) out on R&SMP4040 PSU. Attachments 4-5.</p>
<p> No change in noise observed.</p>
<p> 9/16 <20kHz, max 187k</p>
<p>15:49 Connected PN 300 ground to R&SMP4040 4V (Ch3) output. Noise decreased in many channels aida09 does not have a noisy channel anymore (??). Attachments 6-7.</p>
<p> 10/16 <20kHz, max 158k.</p>
<p> </p>
<p>Current bPlast grounding scheme in attachments 8-9.</p>
<p> </p> |