RS-530 or RS-449 Cable Adapter when HPUX X.25
solution is connected to a RAD Switch.
CAMI Research provides a custom mini-adapter with pins 18 and 21 missing
for an HPUX interface application. Review the HP Application Note below for details.
Christopher E. Strangio
CAMI Research Inc.
Tel: (800) 776-0414
e-mail: chris@camiresearch.com
- - - - - - HP Application Note - - - - - -
SUPPORT COMMUNICATION - CUSTOMER NOTICE
Document ID: c00609504
Version: 2
X.25 on IPF servers may generate an MCA on the RS-530/RS-449 interface of a RAD switch
NOTICE: The information in this document, including products and software versions, is current as of the Release Date. This document is subject to change without notice.
Release Date: 2006-03-15
Last Updated: 2006-03-13
When used in some Integrity servers, the X.25 2-port PCI card, product number J3525A, may generate a Machine Check Abort (MCA) if connected to a RAD SPS series switch (SPS-12, SPS-3S or SPS-6) using the RS-530 or RS-449 interface.
The issue described above may happen in the following configuration:
The issue is due to a design defect in the RAD switch implementation of the RS-530 and RS-449 interfaces loop-around test pins, which causes over current into the X.25 card in some situations. This was only observed with a card installed in the sx2000 systems due to its lower short circuit current limit and threshold voltage.
HP recommends not using the X.25 card in the above configuration without protecting it from these peaks of current. The solution recommended by HP consists of inserting a special DB25 Male/Female mini-adapter, with pins 18 and 21 disconnected, between the X.25 switch and the cable connector, as shown in the following graphic:
The following picture shows how to connect the adapter to the cable (this should be done on the cable connector to be plugged to the switch connector):
Customers can order this special adapter from CAMI Research Inc. The part-number is 902H. See the ordering details at http://www.camiresearch.com/hpux , or contact Cami Research using the following information:
CAMI Research Inc.
ATTN: Christopher E. Strangio
530 Main Street
Suite 2
Acton, MA 01720
USA
Tel: +1 978-266-2655
Fax: +1 978-266-2658
e-mail: chris@camiresearch.com
NOTE: It may take up to three weeks for the adapter to be shipped after it is ordered.
Hardware Platforms Affected: HP Integrity rx8640 Server, HP Integrity rx7640 Server, HP Integrity Superdome SX2000 Server, J3525A(Dual Port PSI Card for HP 3000/9000: Standard HP Product)
Components Affected: Not Applicable
Software Affected: Not Applicable
Third Party Products Affected: Not Applicable
Support Communication Cross Reference ID: IA00609504
©Copyright 2006 Hewlett-Packard Development Company, L.P.
Hewlett-Packard Company shall not be liable for technical or editorial errors or omissions contained herein. The information provided is provided "as is" without warranty of any kind. To the extent permitted by law, neither HP or its affiliates, subcontractors or suppliers will be liable for incidental, special or consequential damages including downtime cost; lost profits; damages relating to the procurement of substitute products or services; or damages for loss of data, or software restoration. The information in this document is subject to change without notice. Hewlett-Packard Company and the names of Hewlett-Packard products referenced herein are trademarks of Hewlett-Packard Company in the United States and other countries. Other product and company names mentioned herein may be trademarks of their respective owners.