Symbol Technologies VC5090 - Manual (Page 52)

2 - 28 VC5090 Vehicle Computer Product Reference Guide
Figure 2-36 RF Settings Tab Window
6.
Tap the
RF Settings
tab.
7.
Tap the
External Antenna
radio button.
8.
Tap
OK
.
Installing the Vehicle In-Motion Detector
The optional Vehicle In-Motion Detector cable blanks the screen and disables use of the vehicle computer
when the vehicle is in motion. The customer must install a switch that is engaged when the vehicle accelerator
pedal is not depressed. When the pedal is not depressed, the switch is activated (closed) and sends a signal to
the vehicle computer indicating that the pedal is not depressed. When the accelerator pedal is depressed the
switch disengages and the signal removed. The screen blanks and the touch screen and keyboard are
disabled.
Whenever the vehicle is in motion (accelerator pedal is depressed) and the Terminal Locking feature is
enabled, the vehicle computer display blanks. When the accelerator pedal is not depressed, the vehicle
computer does not unlock immediately. Instead, the
Complete Lockup Timeout
timer initiates during which the
vehicle computer continues to remain locked. This ensures that the vehicle computer doesn’t unlock and lock
during any momentary disengagement of the accelerator pedal. While the
Complete Lockup Timeout
timer is
running, the touch screen, backlight and keyboard are disabled. After this timer expires, the
Screen Blank
Timeout
timer initiates. While this timer is running, the touch screen is enabled but the backlight and keyboard
are still disabled. If during this time the user touches the screen, the backlight comes on and the vehicle
computer unlocks fully. Otherwise after this timer expires, the backlight comes on and the vehicle computer
unlocks fully. If, while any of these timers are running, the vehicle pedal is pressed, the vehicle computer locks
again.
If the cable is cut or removed, the vehicle computer responds as if the pedal is depressed.
Switches
There are two types of switches that can be used; a solid state switch and a mechanical switch. Typically solid
state switches have a much longer life cycle than mechanical switches. Solid state switches require power
while mechanical switches do not.