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UPAMD, At the meeting on Tuesday, and in the Power Subcommittee meeting, the issue of specification of the input power to a UPAMD device, acting as a normal source device has been raised. This straw ballot is to gather the opinions of the larger group as to how to specify power input requirements, if at all. The question from the UPAMD meeting is: Should we include source power requirements for UPAMD device? 1. Shall we specify AC input power requirements as shown in Section 11 of draft? 2. Shall we specify DC input power requirements? 3. Shall we specify NO input requirements? Background: The AC input requirements currently included in the draft Section 11, was contributed by Lee Atkinson early in the process of creating the draft. It represents a input specification for current AC powered, power units for laptop computers. Since that time the committee has opened the input to AC and DC sources of a varied nature. This could mean a expanding set of input requirements depending on the source and the geopolitical usage environment. Paul has farther commented: “UPAMD-compliant power adapters are designed to accept flexible input power sources. They may accept AC input or DC input, or they may have multiple input power sources of any type. For example, a UPAMD power adapter may accept input power from a wall socket as well as from an internal battery. Another power adapter may only accept a 12V car battery input. The current draft of the UPAMD specification has defined input power requirements only for AC input. The current draft only states that DC input sources, if utilized, must properly comply with all the provisions in the specification, including the low-energy connect requirements.” Please send your straw ballot comments and selection to upamd-vote@xxxxxxxx. As this is a straw ballot the response is not restricted to the current voting members. Your opinions do count. Respectfully; Bob Davis Chair UPAMD/P1823 bobd@xxxxxxxx 408.353.5990 desk 408.857.1273 cell bob.davis.scsi.com Skype |