Hi Other Brian: You raise some interesting points. With regard to IEC 5009... You describe the function as when the switch is operated, the "standby" mode is turned "on." Okay. The two positions would be: "standby on, function off" "standby off, function on" I view the function as toggling between two modes, "standby" and "on." They're both the same, aren't they? With regard to IEC 5010... This symbol is for a push-push switch, where one position is on, and the other position is off. In this case, and in accordance with IEC 60417, the off position directly disconnects power from the remainder of the equipment. My cell phone switch is marked with this symbol. Clearly, though, this switch does not disconnect the power; some functions remain on until I push another button. In accordance with 60417, the switch should be marked with the 5009 symbol. HOWEVER... regardless of the symbol, we have all figured out what each such switch does, and when and how to use it! Best regards, Rich
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Kunde, Brian Sent: Tuesday, July 10, 2007 8:32 AM To: Scott Xe; emc-p...@ieee.org Subject: RE: Symbol on power button The standby symbol as well as several others are being used incorrectly according to the original intent, but due to the lack of a better symbol, they are being used to indicate a logical on/off instead of its intended relationship with the disconnection or non-disconnection from the AC Mains. I have always thought the stand-a-lone "Standby Symbol" was confusing the way it is often being used. Originally, this symbol would be used on a button or switch that when pressed or turned ON would put the device into a Standby State (no disconnection from the mains). But today, the symbol is used to turn ON a device where the OFF state is really standby (this is backward from my way of thinking). I think the “I” + “/” + “Standby symbol” that is now showing up on consumer electronic devices, they are trying to indicate that the two states of the button is On or Standby. but by definition, the Standby symbol means either On or Standby, so I do not see any reason to use anything but the stand-a-lone standby symbol. My Cell phone used the IEC5010 symbol ("|" inside the "O") which traditionally is used on push-button ON/OFF switches that are also disconnect devices. So in my way of thinking, this is not the correct symbol to use on a battery operated device, but like I said before, these symbols are being used for logical ON/OFF because a better symbol that is recognizable for the On/Off function is not available. The Other Brian _____ From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Scott Xe Sent: Tuesday, July 10, 2007 10:26 AM To: emc-p...@ieee.org Subject: Symbol on power button I notice that “I” + “/” + “Standby symbol” is on the power button (actually not fully power off & in standby state). It appears on lots of Japanese made products. What is the meaning in terms of technical aspects? According to IEC 5009, it should be a “Standby Symbol” only. Your guidance is appreciated. Regards, Scott - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc _________________________ LECO Corporation Notice: This communication may contain confidential information intended for the named recipient(s) only. If you received this by mistake, please destroy it and notify us of the error. Thank you. - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________ - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc