Dell Latitude 9420 Service Manual page 81

Table 23. Context menu options
System state
Near and Away
Enable with external monitor(s)
Open application
Quit
Dell ExpressSign-in Field of View (FoV) states
The Field of View (FoV) defines the distance and the angle that the proximity sensor can detect while the proximity feature is
enabled. The FoV includes range angle and range distance. Dell recommends the distance between you and the laptop display
should be 70cm for optimum performance of the proximity sensor.
Table 24. FoV states
Field name
Range angle
Range distance
Lock timer
The lock timer is the approximate time for Dell Express Sign-in to identify that the user is no longer in front of the system or
within the FoV. This feature will recognize your physical absence and lock the system.
The lock timer values are 60 seconds (default), 90 seconds, and 120 seconds. If Away is set to OFF, the Lock timer option is
grayed out.
Supported hinge angles
The ExpressSign-in works as configured in a supported four hinge angles for a particular mode. The ExpressSign-in does not
change the existing state if you are within the sensor FoV for an unsupported hinge angle. Once the system is in the supported
hinge angle, the ExpressSign-in will start to change the state. The supported hinge angles are:
Table 25. Supported hinge angles
Options
● Select Away to enable the system lock and turn off the
display when you move away from the system.
● Deselect Near to disable the system lock when you
move away from the system.
● Select Enable with external monitor(s) to enable the
ExpressSign-in.
● Deselect Enable with external monitor(s) to disable
the ExpressSign-in.
Select to start the ExpressSign-in desktop application.
Closes the ExpressSign-in desktop application and deletes
the Systray icon from the system. Restart the ExpressSign-
in from the operating system settings page or use the
Search option to view and start the ExpressSign-in.
Description
The proximity sensor should function satisfactorily in
detecting user presence / absence within a27° conical range
as defined by the center of the target.
The proximity sensor should function satisfactorily in
detecting user presence / absence <100cm away
System setup 81