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Using Power Management on a SPARCstation Voyager
3
- Power Management software on a SPARCstation Voyager system has additional functionality that is not documented in Chapter 2, "Using Power Management."
- You can use a SPARCstation Voyager system:
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- Connected to a wall outlet without a battery (on AC)
- Connected to a wall outlet with a battery (on AC or battery)
- Connected only to a battery
- When connected to a wall outlet, a SPARCstation Voyager system has the same functionality as any other Sun SPARCstation system. However, when using a battery, Power Management displays information about the battery charge. If a SPARCstation Voyager system that only uses battery power is about to exhaust the battery charge, the system will automatically suspend and override any setting in dtpower. You can resume after changing battery packs or connecting to a wall outlet. For more information on the Suspend feature, see Chapter 4, "Suspend-Resume."
- In addition, power consumption of the hard disk can also be conserved on a SPARCstation Voyager system. If no activity occurs on the hard disk for a specified period of time, the hard disk will automatically power off. You can also specify the length of time before the hard disk is powered off.
- The Power Management graphical user interface, dtpower, provides additional information about battery connectivity and charge on a SPARCstation Voyager system, which is not available on other Sun SPARCstation systems.
SPARCstation Voyager Power Sources
- The dtpower icon and main window on a SPARCstation Voyager system display information about battery connectivity and battery charge. Both the icon and main window are automatically updated whenever the power configuration of your SPARCstation Voyager system changes. A power profile consists of a set of specified periods of inactivity before different devices, such as the screen and hard disk, are automatically powered off.
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dtpower on a SPARCstation Voyager system provides the flexibility of storing two power profiles. You have an AC power profile and a battery power profile, each of which can be customized. You can set up the battery power profile to conserve battery charge by shutting down the screen and hard disk during shorter periods of inactivity. dtpower automatically sets the correct profile for the available power supply.
SPARCstation Voyager Connected to a Wall Outlet (on AC)
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Figure 3-1 illustrates the dtpower icon on a SPARCstation Voyager system that is running on AC only.
Figure 3-1 dtpower
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Figure 3-2 shows the main window on a SPARCstation Voyager system that is running on AC only.
Figure 3-2
SPARCstation Voyager Connected to a Wall Outlet and a Battery
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Figure 3-3 shows the dtpower icon of a SPARCstation Voyager system connected to a wall outlet and a battery. The power level in the icon represents the level of charge of the battery.
Figure 3-3 dtpower
- The icon displays the amount of battery charge that is left, as shown in Figure 3-4.
Figure 3-4 dtpower
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Figure 3-5 shows the main window on a SPARCstation Voyager system that is connected to a wall outlet and a battery. The battery charge is displayed as a percentage of total capacity.
Figure 3-5 dtpower
SPARCstation Voyager Powered by a Battery
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Figure 3-6 illustrates the dtpower icon on a SPARCstation Voyager system connected only to a battery.
Figure 3-6 dtpower
- The icon displays the amount of battery charge that is left, as shown in Figure 3-7.
Figure 3-7 dtpower
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Figure 3-8 shows the main window on a SPARCstation Voyager system connected only to a battery. The battery charge is displayed as a percentage of total capacity. The number of minutes remaining for the SPARCstation Voyager system to operate with only a battery is 15 minutes in this example.
Figure 3-8 dtpower
Viewing Power Profiles
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Note - If the SPARCstation Voyager system does not have a battery, you cannot change the battery profile.
- To view a power profile:
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* Select the type of profile by clicking the Battery or AC toggle button in the main menu, as shown in Figure 3-9.
Figure 3-9
Setting Idle Time for Screen and Hard Disk
- To change or set the idle time for a certain profile before a screen or hard disk is automatically powered off:
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Select the type of profile, Battery or AC, in the main menu.
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Drag the slider for the screen or hard disk, as shown in Figure 3-10, to set the length of idle time before your screen or hard disk is automatically powered off.
Figure 3-10
- The default settings for the AC power profile are Never for screen and Never for hard disk. The default settings for the battery power profile are 5 minutes for the screen and 10 minutes for the hard disk.
Resetting to Standard Values
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* Click on the Reset to Standard button in the main menu to select the standard values for the screen and hard disk for both profiles, as shown in Figure 3-11.
Figure 3-11
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* You do not need to select Apply to effect this change.
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