98 Control Panel Options
VX7 Reference Guide E-EQ-VX7RG-D
Screen Blanking
The VX7 can be configured to blank the display when the vehicle to which it is mounted is
moving, eliminating a possible distraction for the driver. When configured properly, the screen
blanking feature provides a tamper resistant method to blank the vehicle screen. The screen
blanking feature consists of Scanner Control Panel Options and a customer supplied cable
connected to one of the COM ports on the VX7. Properly configured, the display is visible only
when the cable provides a signal that the vehicle has stopped.
The customer must supply their own cable. The cable specifications are detail in “Technical
Specifications – Screen Blanking Cable” in Chapter 2, Physical Description and Layout”.
The cable can be hooked to either the COM1 or COM3 port. The COM port used must be
selected in the Scanner control panel.
Screen blanking is configured on the Main tab of the Scanner control panel.
Figure 4-24 Scanner Properties / COM Port Settings
S
If the COM1/COM3 screen blanking and On Delay choices are not shown, the
system load must be updated.
Warning
!
Do not select Screen Ctl for COM1 or COM3 unless you have already attached
the cable described in “Technical Specifications – Screen Blanking Cable” in
Chapter 2, Physical Description and Layout”.
Failure to attach the cable before selecting a screen blanking option will cause
the screen to go blank (and remain blank) until an appropriate cable is attached
to the specified COM port.
Set the desired COM port (Screen ctl for COM1 using the left radio button or COM3 using the
right radio button) and On Delay. Press OK. The On Delay can be used to specify the time (in
milliseconds) before the display turns on. For example, use the On Delay if the switch end of the
cable is attached to the vehicle’s accelerator pedal. Release of the accelerator may mean the truck
is coasting to a stop rather than stationary. Configure the delay to allow time for the vehicle to
coast to a stop.
To disable screen blanking, select COM1 or COM3 to return the selected COM port to normal
operation.
