CDF Crate (VIPA CDF Subrack)

CDF2388 document entitled "A Standard Front-End and Trigger VMEbus Based Readout Crate for the CDF Upgrade - The CDF Readout Crate"

CDF2388.htm in html format

CDF2388.ps in postscript format

CDF2388.doc in Microsoft Word format

NEW The Care & Feeding of VIPA64x Subracks at Fermilab from Fermilab's PREP department

Board Design Guide for CDF VME64 Extensions Modules & VIPA Subracks

Design Guide in html format

Design Guide in postscript format

Design Guide in Microsoft Word format

VME Crate Power Spec Spreadsheet

6U-to-9U Adapter

Documentation on an adapter for using a 6U commercial Motorola MVME-162 VMEbus processor card in a 10U CDF Front End crate (9U for the cards plus 1U for electrical connections = 10U)

6U-to-9U Adapter.htm in html format

6U-to-9U Adapter.ps in postscript format

6U-to-9U Adapter.doc in Microsoft Word format

Stiffeners for 9U printed circuit boards

There are two approaches that have been implemented. They are described below.

1) This design is suitable for both the main module (9Ux400mm) and transition card (9Ux120mm). It should be located close to the VMEbus connectors on the circuit board. This design is mechanically very strong. However, it takes up a significant amount of real estate on the component side of the board. For most board layouts this will not be a problem. In the case where a printed circuit board is very densely packed near the connectors or in the case where a layout has been implemented without reserving space for this style of stiffener, the altenatives described in the following section should be utilized.

Stiffener for both main and transition modules in postscript format

2) This design was implemented with a goal of minimizing the amount of board real estate that is lost to the stiffener footprint. This is accomplished by locating the stiffener on top of the VMEbus connectors and sharing four of the required six mounting screws for the stiffener with the four screws used to mount the J1 and J2 connectors. Two additional dedicated screws are required to mount these stiffeners. For one of these two screws, the board designer can select between two holes in the stiffener located just above the J3/J5/J6 location. There is one model for the 9Ux400mm main module and another model for the 9Ux120mm transition card. The two models are not interchangable. Both of these models require two metal standoffs to be positioned over the stiffener mounting screws that are located on either side of the J3/J5/J6 connector location.

Stiffener for 9Ux400mm main module in postscript format

Stiffener for 9Ux400mm main module in pdf format

Stiffener for 9Ux120mm transition card in postscript format

Stiffener for 9Ux120mm transition card in pdf format

Crate Load Card used for providing an electrical load and a thermal load in order to conduct tests of the power supplies and the cooling system

Connectors, front panel and J3 backplane

Reset Crate

Options for crate power distribution

VME64-9U Extensions document

VME International Physics Association (VIPA)

VME International Trade Association (VITA)

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Last modified April 17, 1998 by demaat@fnal.gov