Sp-controls SmartPanel Bedienungsanleitung PDF herunterladen (Seite 29)

SmartPanel Configuration and Installation Guide Page 25

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PANEL AND PROJECTOR POWER

Power Controls and Indication

The Panel’s power buttons are easy to use:

x To turn the projector on, press the On button.

x To turn the projector off, press the Off button.

The Panel powers itself on and off to match projector

power. Projector power is verified using RS-232 polling or

via third party power current sensors.

Power States

Projector power is more complex than on and off

It would be nice if on and off were all there was to projector power. However, contemporary

projectors have power cycling complexities that can confuse users accustomed to the

straightforward behavior of consumer audio-visual devices. The most awkward of these

complexities are projector warm-up time, and the minimum prudent time between bulb-off and

bulb-on cycles.

In our experience, user confusion about power states arises as a result of:

x not knowing the power states a projector can be in,

x not knowing the control possible in each power state, and

x uncertainty as to which power state a projector is actually in.

Additional complications arise because every projector handles power states in a slightly different

way.

The sections that follows explain how the Panel manages projector power states.

Projector Power States

Table 2 lists the power states we have identified, and upon which we based Panel behavior. This

list should clarify our treatment of Panel and projector power in the sections that follow.

Note: Download-only mode is a special Panel mode with no relationship to projector functioning;

it is included for comparison of Panel display. See Download-Only Mode for more

information.

Projector

Ready

Warm-up

OFF

Button

Ready

Indicator

(green LED)

Warm-Up

Indicator

(red LED)

Off

Button

Figure 11: Power controls

and indication

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