HEPI Pressure Preamp

Document #:

LIGO-D1101839-v2

Document type:

D - Drawings

Abstract:

Chassis and board that amplifies HEPI Pressure sensors that are then read back at the pump servo box.

Files in Document:

• BOM with the correct gain resistor value. (PressureSatelliteLatest.xlsx, file is not accessible)
• Schematic PDF with the correct gain calculation. (PressureSatelliteLatest.pdf, file is not accessible)

Other Files:

• IMG_3331.pdf (file is not accessible)
• PressureSatelliteBoxCovers.fpd (file is not accessible)
• PressureSatellitev2.pdf (file is not accessible)
• pressure satellite box.fpd (file is not accessible)
• pressure satellite boxBack.fpd (file is not accessible)
• Packaged Altium Project (PressureSatellite (6-26-2014 11-10-06 AM).zip, file is not accessible)
• odb++, Gerber files, BOM and pick-n-place files. (PressureSatellite.zip, file is not accessible)

ICS/JIRA Record:

• ICS_LINK

Topics:

• Seismic Isolation

Authors:

• Benjamin Abbott

Keywords:

HEPI SEI Pump Servo

Notes and Changes:

I noticed that the gain calculation on the schematic used an old value of resistor as one of the inputs. I have changed the number in the calculation to reflect the 25Ohm reality. I have also changed the BOM to reflect that, as well. Any new instances of this box should use the new BOM.

Related Documents:

• LIGO-D0901839: HEPI Pump Servo Chassis

Referenced by:

• LIGO-T1300352-v1: HEPI Pump Servo Test Procedure
• LIGO-T1300173-v1: SEI Electronics Document Hub
• LIGO-D1101576-v10: aLIGO HAMs 2&3 ISI (SEI) System Wiring Diagram
• LIGO-D1000298-v8: aLIGO HAMs 4&5 ISI (SEI) System Wiring Diagram
• LIGO-D1101584-v8: aLIGO HAMs 1&6 ISI (SEI) System Wiring