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Garry, Thanks for the call, and I hope the background information
on the UPAMD helped. I believe I failed to bring up an additional consideration
that the committee will address in the upcoming communications goal selection
task. This new adapter is supposed to replace the next two to
three adapters that you would purchase and be used on more than one piece of
portable equipment. This significantly changes the user ROI
calculations/considerations. Pay back is over several pieces of portable
equipment possibly over 10+ years. While some will still chase and argue for the $0.005 cost
savings at the device level, as they should, the goal is to save the cost of
3-5 power adapters! The equipment vendors are probably figuring they will
not need to ship adapters as this standard is completed which saves them
direct cost over time. The adapter becomes an independent product sold on
its feature set alone and not that it supports xxxx brand yyyy model built from
20xx to 20xy device. This is more like the AC power cords and AC power
outlet strips with smarts or UPS’s. Startup conditions should probably meet no-spark
environments for general safety of the users such as gas stations, vehicles,
with hazardous vapor environments, possibly unknown to the user. This would
than support S60601-1 for use in hospital/medical equipment as well with safe
creepage and clearance requirements. Once connected the power goes up. The communications schema, to be developed by the committee,
must be very reliable, expandable, flexible as features are added for customer
appeal. While remaining cost effective is always a critical goal, the results
must still be sufficient to the current and future communications tasks.
While low bandwidth is needed, reliability is critical. Blasting the
wrong power level due to miscommunication will not be looked on favorably
through the expensive smoke. Nasty electrical environments, such as vehicle,
industrial, and possibly military/police applications will need to be
considered for mission and business critical uses. The input from the members of the working group
suggesting the cable be a symmetrical and detachable, significantly
enhancing the capabilities of the power system, possibly means that
rather than adapter -> device, this should be considered source->load. These issues will, I hope, be considered in the development
of the goals for the communications aspect of the project. Thanks for joining, and bringing your expertise, to the
group. Respectfully; Bob Davis UPAMD Chair 408.857.1273 |