Tom, There must be some document within the Telcordia library which does call out the requirements but the base requirements are given below.
The references that you want to examine are: North America: ANSI T1.315-1994, Voltage Levels for DC-Powered Equipment Used in the Telecommunications Environment European Union: ETS 300 132-2, Equipment Engineering (EE); Power supply interface at the input to telecommunications equipment; Part2: Operated by direct current (dc) Customer Specific: AT&T 802-010-100 "In-Bay Power Architecture" In general, the worst case range for -48V (nominal) DC power plants is -40 to -60V. There are also different specs for other countries. Brazil used to have a requirement to go down to -36V. I don't know if that is still in place but really hope that it isn't! Regards, Marko Radojicic Hardware Design Assurance, Maple Optical Systems ma...@mapleoptical.com Phone: 408/545-1263 FAX: 408/434-9209 -----Original Message----- From: nebs-appro...@world.std.com [mailto:nebs-appro...@world.std.com]On Behalf Of tla...@coppermountain.com Sent: Thursday, February 15, 2001 1:23 PM To: nebs@world.std.com Cc: daus...@coppermountain.com Subject: CO Battery output voltage range Hi All, I am trying to determine the appropriate Telcordia standard number and title which defines the absolute minimum and maximum acceptable output voltages for a CO battery plant. I suspect the range is something like 42VDC absolute minimum and 56VDC absolute maximum, but it would help to have a reference. Also, are there any RBOC generated docs that cover this? Thanks. Tom Lavka Copper Mountain Networks, Inc. 10145 Pacific Heights Blvd., Suite 100 San Diego, CA 92121 Voice:(858)410-7110 Fax: (858)410-7286 email:tla...@coppermountain.com
