Hand Held Products 7900 - Manual (Page 160)

11 - 2 Rev F
10/16/07
Dolphin® 7900 User’s Guide
Powering the GPS Module
The GPS module is powered by the I/O Connector whose 8th pin can be set to power out at 5 volts (5V).
In general, the 8th pin is disabled on Dolphin terminals. However, on Dolphin 7900 terminals with GPS, the 8th pin powers out
by default.
However, even when the 8th pin is set to power out, the I/O Connector will not power the GPS module during:
• The cold boot process. 5V power out is restored after AutoInstall.
• The warm boot process. 5V power out is restored after the Today Screen (see page 2-9) appears.
• Suspend. 5V power out is restored immediately upon resume.
There are two ways to control power out from the I/O Connector:
1) the DeviceConfig Power Tool (see page 11-2) and
2) the Enable5VOut (see page 11-3) application.
The DeviceConfig Power Tool is the default method of setting the 8th pin to power out at 5 volts.
DeviceConfig Power Tool
The DeviceConfig.exm file configures various settings on Dolphin terminals, including the power out setting of the I/O Connector.
On Dolphin 7900 terminals with GPS, the DeviceConfig.exm file sets the I/O connector to power out by default. DeviceConfig is
launched During Autoinstall (which occurs after every cold boot) and the 5V power out setting is applied.
Using DeviceConfig is the only way to make sure that the power out setting persists through cold boots.
I/O Connector