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HPS Motherboard Electronic Design

This HPS motherboard design includes 115 channels with 10-pin SMD connectors for preamp, 15 TE signal connectors, 2 HV connectors, and 1 LV connector. The layout design consists of 10 layers with specific specifications for signal traces and HV traces. This design also includes a tin ground around preamp holes and circular tin ground areas around fixing holes.

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HPS Motherboard Electronic Design

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  1. HPS Motherboard Electronic Design • 4 PCB (115, 115, 106, 106 channels each). • For TOP LEFT board 115 channels we have: • 115 smd connectors (AMP 10 pin)for preamp very similar to previous version (pin slightly smaller). It is the same of FT-Cal motherboard.(next slide) • 15 TE signal connectors from 16 pin each, equal to previous version. (see page 3) • 2 HV connectors (15 pin) DSUB 750V, 5A, trough hole different to previous for a easier routing. • 1 LV connectors (6 pin). • We can use the same HV grouping. • We can use the same cable as discussed with Stepan Stepanyan.

  2. AMP 10pin smd connector

  3. TE 16pin connector

  4. HPS Motherboard Design Block of 10

  5. HPS Motherboard Design 115 top left

  6. HPS Motherboard Layout Design • For Layout design we have, probably, 10 layers. (3 signals + 1 for High Voltage + 1 fan-out + 5 GND). • Layout specifications: • 115 signal traces with 50 Ohms impedance. • Signal: 0.2 mm line width and 0.2 mm min. spacing. • HV: 0.6 mm line width and 0.9 mm min. spacing. • Ground ring between two signals as FT-Cal project.

  7. Some Questions • 1)We assume preamp connection is the same of FT-Cal. Is it true? • 2)Preamp positioning. Where is located the HV pin respects yours picture? Last pin of right? Is the same for top and bottom part? • 3)Thickness between 3 or 4 mm for you. I think a 2.5 mm. Any problems? 4)Link the tin ground around the preamps holes to an internal ground layer with a via. Is it necessary? 5)You want put a tin ground without solder (circular area diameter 10mm) around each fixing hole. Why?

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