Use D Sent from cb IPhone On Aug 1, 2013, at 1:08 PM, Jack Olson <[log in to unmask]> wrote: > Thanks, everyone! > > We are revisiting our documentation requirements. We've been using "D" but > maybe move to "DS" to conform to IPC-2612 and others > > -=-=-=- > > changing the subject: > > "BUS" or "BUSS"? > > (how can I not know this?) > > Jack (aka "the new guy") > > > On Thu, Aug 1, 2013 at 12:33 PM, Brooks, William < > [log in to unmask]> wrote: > >> DS is the correct Ref Des for a lighting device, indicating device, or >> optical indicator or signaling device... >> When they developed the spec we used it for a 'light bulb' or 'Lamp' >> indicator on a front panel for example. >> LED is not specifically called out in the spec but it functions as a >> lighted indicator. >> >> That being said, a light emitting diode is also a semiconductor or >> 'diode', which was a 'CR' or 'D' according to ANSI Y32.2. >> I would think both are 'correct'. (D also described a vacuum tube Diode) >> >> 'D' for Diode takes up the least amount of space on your board... just >> saying. :) >> >> >> >> William Brooks, CID+ >> Senior MTS (Contract) >> 2747 Loker Ave West >> Carlsbad, CA 92010-6603 >> 760-930-7212 >> Fax: 760.918.8332 >> Mobile: 760.216.0170 >> E-mail: [log in to unmask] >> >> -----Original Message----- >> From: DesignerCouncil [mailto:[log in to unmask]] On Behalf Of Ben >> Jordan >> Sent: Thursday, August 01, 2013 10:00 AM >> To: [log in to unmask] >> Subject: Re: [DC] Informal Poll >> >> The IPC standard takes the IEEE 315-1975 as the baseline. That's the >> earliest source I know of which clearly calls for DS. >> >> In the past I have used D, LD, LED. >> >> >> _____________________________________________________________________________ >> Scanned by IBM Email Security Management Services powered by MessageLabs. >> For more information please visit http://www.ers.ibm.com >> >> This email is intended only for the use of the party to which it is >> addressed and may contain information that is privileged, confidential, or >> protected by law. If you are not the intended recipient you are hereby >> notified that any dissemination, copying or distribution of the email or >> its contents is strictly prohibited. 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