GE Intelligent Platforms > Support >  Developer Downloads > DD291
CMX (Control Memory Xchange) Network Time Synchronization to less than 100 Microseconds Absolute Time between PACSystems Controllers
Type File Name Date Posted Size Description

There are files attached to this record that may require you to login.

 


Description

ProductVersionModule
RX3i Controllers All All
RX7i Controllers All All

Support :  Low
Version : 1.0
Description : 

Using purchased GEIP Embedded Compact PCI Computer Hardware, purchased Symmetricom GPS / IRIG-B Hardware, included PACSystems C Code Blocks and included Linux operating system image and application it is possible to hold less than 100 microseconds absolute time between any two PACSystems Controllers on a CMX based network.

C Code Blocks, that are provided, can be used on any PACSystems CPU platform and run in the normal sweep and read a precise time value that is placed on the CMX network every 33 microseconds. The local PACSystems clock is synchronized to this time value every 1 second to assure maximum time accuracy and only consumes a low number of microseconds to process. A local Time Zone Offset and a CMX network transmission Delay Offset can be adjusted as C block parameters.

This Applied Solution also contains a TinyCore 3.5.1 Linux based operating system image and embedded application that does all the work. The image is only 128 megabytes in size and simply needs to be copied to a Compact Flash drive for use on the GEIP Compact PCI Single Board Computer that must be purchased. Load the image and set 1 parameter and done. See User Guide in the attachment for all of the details.

Please contact mark.lobuono@ge.com for any additional information.


Details
ID: DD291
Category: Applied Solutions
Last Updated: 12/23/11
Date Created: 06/09/11
Status: Published
Attachments: Yes
Language: English
User Group: All


 


Overall Rating: 3 (1 response)
Rate this content record (1=lowest, 5=highest)
5
4
3
2
1
Comment


Important Information Regarding the Support of Developer Downloads

Note:  If your firewall blocks ZIPS and EXEs, simply right-click and select SAVE TARGET AS and change the extension to something like "XIP".  Once downloaded change the extension back to its original one.

All drivers produced by vendors other than GE ("3rd Party Drivers") are provided by GE "as is" and without warranty of any kind unless the vendor extends a pass-through warranty to the end user.  Support for 3rd Party Drivers is provided by the driver's vendor.