D. Kampf

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FPU Harness and Distribution Board

• D. Kampf
• KAYSER-THREDE

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FPU Harness Diagram
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Specification Harness

• AWG 28 twisted shielded
• Copper wire, insulator PTFE
• Redundant cables in different cable bundle
• Connectors without gasket
• MDM connectors supplying power have pin contacts

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Harness Status

• Design finished (except pin assignment)
• Measurements of IR-Transmission of Insulation and
  Potting Material of ITT CANNON MDM connectors
• Length of harness not defined yet

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IR-Transmission Measurement ITT Cannon MDM
connectors
Insulation old
Potting Material
Insulation new
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IR-Transmission MeasurementsGLENAIR and MALCO
Connectors
Insulation Material MALCO
Potting Material GLENAIR
Potting Material MALCO
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Connector Set-up

• Potting Material
• Female 0.7 mm
• Male 0.7 mm
• Isolation Material
• Female 1.7 mm 0.8 mm ( gap 0.13 mm2 / pin)
• Male 1.7 mm 5.3 mm ( gap 0.13 mm2 / pin)

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ITT CANNON MDM Connector
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ITT CANNON MDM Connector (old)
Insulator 51 pin old material Socket (wall
removed) Insulator Gap Pin
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ITT CANNON MDM Connector

• Transmission for new ITT Cannon design, two
  connectors (seems to be acceptable)

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FPU Distribution Board

• 2 Electronic Boards
• First Electronic Board, Detector side
• 25 x 31 pins MDM Connectors for Detectors
• 1 x MDM 9 pins Connector for Heaters (only blue
  Detector)
• 128 capacitors (WMA MKS2 1MicroF 50V)
• Second Electronic Board, Connector Bracket side
• 5 x 31 pins MDM Connectors
• 4 x 25 pins MDM Connectors

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FPU Distribution Board

• Flex-wire (165 tracks per flex layer) between
  both board
• Flex-wire shielded on both sides
• 6 to 8 layers per board
• Shielding layers in between the layers
• Board and Flex wire material Polymide

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FPU Distribution Board
130 mm
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Position of Distribution Board for Red Detector
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Position of Distribution Board for Blue Detector
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FPU Distribution Board

• Open Points
• Detailed Specification of the Board
• Numbers of capacitors
• Required separation / distance for noise
  sensitive lines
• Thickness of layers
• No triax harness possible on boards and flex
  cable
• Grounding requirements

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Filter Wheel 1, Cable C01
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Filter Wheel 1, Cable C02
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Filter Wheel 2, Cable C03
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Filter Wheel 2, Cable C04
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Calibration Source 1 and 2, Cable C05
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Chopper, Cable C07
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Temperature Sensors 1 and 2, Cable C08
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Temperature Sensors 3 and 4, Cable C06