Skip to content

  • Projects
  • Groups
  • Snippets
  • Help
    • Loading...
  • Sign in
W
WRS Low Jitter Daughterboard
  • Project
    • Project
    • Details
    • Activity
    • Cycle Analytics
  • Issues 0
    • Issues 0
    • List
    • Board
    • Labels
    • Milestones
  • Merge Requests 0
    • Merge Requests 0
  • Wiki
    • Wiki
  • image/svg+xml
    Discourse
    • Discourse
  • Members
    • Members
  • Collapse sidebar
  • Activity
  • Create a new issue
  • Issue Boards
  • Projects
  • WRS Low Jitter Daughterboard
  • Wiki
  • Schematics review

Schematics review

Last edited by Mattia Rizzi Nov 16, 2016
Page history

Schematics review 26/10/2016

File used for the review: https://www.ohwr.org/project/wrs-low-jitter/uploads/7eb96aa55ee2b102a6b9b5437f5f4a41/Daughterboard_V2.pdf

Present

Van der Bij Erik (BE/CO), Boucquey Nicolas (BE/CO), Calvo Giraldo Eva (BE/CO), Daniluk Grzegorz (BE/CO), Van der Bij Erik (BE/CO), Lampridis Dimitrios (BE/CO), Gousiou Evangelia (BE/CO), Lipinski Maciej (BE/CO)

Detailed comments on schematics

General comments

  • Disable the dot marking on the labels of components (ToolsSchematics>Marking, disable it)
  • Use a yellow frame for the notes

Top Level sheet

  • Refactor the block diagram in order to be read from left to right, top to bottom
  • Power block diagram floating, not connected to the power connector
  • Move all the connectors to the top level sheet (including debug connectors)

Power

  • The voltage divider used in the feedback loop of IC1 it's not clear

Oscillator

  • Refactor the connections, must be readable from left to right
  • Missing a _N in the net DAC_REF_SYNC of the DAC (IC5)
  • Directly connect the output of the VCTCXO to IC7

PLL

  • Differential marking are not displayed on the IC8 outputs from OUT0 to OUT5, contact CERN Library service
  • Refactor the IC8 Loop filter, it's not clear. Connect it directly to IC8, do not leave it floating

FPGA connector

  • Make the OSC_FREQUENCY_ID lines user selectable with jumpers rather than using SMD resistors
  • Place a silkscreen on the PCB explaining the meaning of the jumpers
Clone repository
  • Documents
  • Experimental results
  • Gateware and software
  • Home
  • Layout review
  • News
  • Schematics review
  • Faq
  • Mounting
  • Documents
    • Project attachments
    • Reports
More Pages

New Wiki Page

Tip: You can specify the full path for the new file. We will automatically create any missing directories.