Highlights of Proposed Specification

1
Highlights of Proposed Specification

• Noah Horowitz
• Sr. Scientist
• Natural Resources Defense Council (NRDC)

2
Session Outline

• Terminology Gut Check.
• Basis for New Specification.
• Key Elements of Proposed Specification.

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Terminology

• ON active, full power
• SLEEP After x minutes of inactivity, monitor
  goes to lower power usage mode. low power
• OFF Standby
• Remember ON, SLEEP, AND OFF

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Current ENERGY STAR Specification

• Sets minimum wattage levels in low-power or
  sleep mode.
• First Sleep Mode ? 15 watts
• Second or Deep Sleep Mode ? 8 watts

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Why Revise the Current Specification?

• Virtually all monitors meet current ENERGY STAR
  specification.
• Large percentage of monitors are not sleep
  enabled (i.e., we are not getting the energy
  savings we could be).
• Recent NRDC research shows energy use in on
  mode is 80 90 of total kWh/yr.
• For on and off modes, wide range of
  performance between similar-sized models.
• Broad interest in limiting standby power use.

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Goals for Revised Specification

• Incorporate all 3 operating modes
• On (active)
• Sleep (inactive)
• Off (standby)
• Performance-based specification.
• One specification for all monitors, not one for
  CRTs, one for LCDs, etc.
• Equal or better performance compared to
  non-ENERGY STAR labeled models.

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The Core Requirements

• Maximum allowable power consumption levels for
  each mode On, Sleep, Off
• Consensus test method for measuring active power
  usage.
• Minimum consumer acceptance criteria (brightness,
  warranty, etc.)
• Product and package labeling.

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On Mode Active Power Use

• Sets maximum allowable active power (W)
• Power as a function of mega pixels
• Y 30 20X
• Testing to be done via test method in Section 5
  (save questions till later on what settings?)
• Example monitor has resolution of
• 1280 x 1024 1,310,720 or 1.31 mega pixels
• Y 30 20 (1.31) 56 W

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On Mode (cont.)

• Technology neutral, agnostic to monitor type (LCD
  or CRT), size (15, 17, etc.).
• If monitor yields more information, allow a
  little more power consumption.

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Sleep Mode

• Just one sleep mode level.
• Maximum allowable power 4 W
• If multiple sleep modes, all must meet 4W
  requirement.

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Sleep Mode Advisory Language

• For consideration in updated ENERGY STAR computer
  specification
• Maximum default time 15 minutes
• Maximum recovery time 5 seconds
• Goal increase likelihood that users actually
  use and are not annoyed by energy management
  features.

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Off Mode

• Synonymous with standby.
• Power consumed when device is plugged in, but
  switched off ? 2 W.
• Working to harmonize with Executive Order for
  Standby Power Consumption
• (i.e. make ENERGY STAR off reqt and FEMP
  standby spec identical)

13
Consumer Acceptance Reqts.

• Must be bright enough, easy-to-read, reliable.
• Brightness minimum luminance of 100 nits
  (candelas/m2).
• Contrast minimum contrast ratio of 2001.
• Defective Pixels ? 5 sub-pixel faults per
  million sub-pixels.
• Warranty at least 2 years.
• User Interface UI Standard recommended

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Labeling Requirements

• ENERGY STAR logo must be displayed on
• top/front of product,
• product package,
• product literature.

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Save Those Other Questions

• Later sessions to cover
• Why base the on mode spec on pixels and not per
  inch of screen, etc.?
• Test methods How do we measure it? What
  settings do we use?
• How/why did you pick the levels you did?