Chapter 5: Accessories
Wiring Vehicle Power to the VH10
Psion VH10 Vehicle-Mount Computer User Manual
132
Figure 5.24 Extension Cable Kit (PN 13985-301)
5.7.3.3
Screen Blanking Option: Wiring
The optional Screen Blanking program turns the screen off when the vehicle is moving, and back on when
the vehicle is stopped. The
Display Properties
dialog box in the
Control Panel
allows you to enable or disable
this feature, and set a delay time for the screen to turn off and on.
•
In the
Display Properties
dialog box, open the
Screen Blanking
tab.
To be able to use Screen Blanking, you must connect one of the two DB9 serial ports on the VH10 to a
user-supplied switch or relay. This switch/relay may be activated electrically (e.g. motion sensor, GPS) or
mechanically (e.g. pedal switch) when the vehicle is in motion.
Ignition Signal Positive
Ignition Signal Negative (Ground)
Vehicle Battery Positive
Vehicle Battery Negative (Ground)
22 AWG
14 AWG
Important: For customers migrating to the VH10 from a previous generation of vehicle-mount com-
puter (e.g. 8515, 8525/35) or a hand-held computer cradle:
If the screen blanking feature was being used previously, please ensure that you are no
longer feeding the screen blanking signals to the VH10's main CPC power cable. The
screen blanking inputs should be rewired to the DB-9 serial port through the DB-9
screen blanking cable. In previous generations of vehicle-mount computers, the screen
blanking signals were fed in to the terminal through 2 of the 4 wires in the CPC power
cable (through the use of two spare lines in the cable kit PN 13985-301).
