Equipment Rack Grounding

As part of the section on How to design an equipment chassis, a page covering Rack grounding has been added. The new rack page will help to support section 7 which covers Equipment Rack Issues, as well as section 6 which covers Grounding Issues.

All pages support the topic covering Chassis Vendors. The last time a page was added to this section was May 21, with the addition of Rackmount Computers, and Cable Retractors.

I think at this point the information in the section covers the topic pretty well. Not real sure how easy it is to navigate the section, but each page provides a link back to the contents page...

Printed Wiring Board Definitions

A new page was added to cover Definitions related to PWBs. Most if not all of the terms were already listed within the Engineering Dictionary, but are now combined on one page.

I think the only incoming link is from the Electronic 'P' terms page, but I'll add more soon.
Oh, so this is the first up-load so some off the additions may look different because they come from different pages and of course some common terms may be missing. This page has been in the To-Do box for a few months, so no matter what it has to be a good start.

Up-date; I've added links to the PCB dictionary from the main PWB Information page, PCB External Trace Current Carrying Capacity, and PCB Internal Trace Current Carrying Capacity. A link also resides on the Definition of Minimum Annular Ring page.

Resistor Attenuators

I added a new page to cover schematics of different styles of Resistor Attenuator Networks. The page should support the section of Resistor Terms and Resistor Attenuator Manufacturers.

Normally these devices will be surface mount components so the common term will be Chip Attenuator. The new page shows schematics for the Pi attenuator, T attenuator, and L attenuator.

HCSL Components

A new page was added last week to cover HCSL Clock Oscillator Manufacturers. HCSL switching logic is used with PCIe to name just one interface.

The new page is linked off the main Oscillator Manufacturers vendor page. There is also a link of the Engineering Acronyms pages.


Photo credit; army.mil, Rifleman Radio

VPX Computer Board Format

Added two new pages a few weeks ago relating to VPX boards which is the new style of VME card.
I didn't list them because I was not able to verify the data, but I'll list them now regardless.

I just checked and the new pages have not been found by Google yet, but Google will find the VPX pages today with this posting.

VPX Signal Assignments;
Pinout for the VPX J0 Connector.
Pinout for the VPX J1 / J2 Connector.

Both VPX pin out pages are linked off the VPX Board Description page.

Additional pages related to the VME standard;
VITA 48, REDI Standard.
VPX Board Manufacturers.
VXS Board Manufacturers.
VME Backplane manufacturers.
VME Chassis Manufacturers.
VME Bus Definition.

There are additional pages related to the VME format, not listed here.