Users Manual Chapter 5

104 Thor VM3A Vehicle-Mounted Computer
Enhanced Dock with Thor VX8/Thor VX9 Screen Blanking
Determine the type of power supply used with the previous Thor VX8 or Thor VX9
installation:
• DC/DC Power Supply with Screws on Top of Lid
• DC/DC Power Supply with Screws on Side of Lid
Caution: This dock (VMX004VMCRADLE) is recommended for use when
replacing an existing Thor VX8 or Thor VX9 where screen blanking is
used. This dock eliminates the need for wiring changes by enabling
the existing VX8/VX9 power cable and screen blanking box to be used
when the VX8/VX9 is replaced by Thor VM3A These instructions are
for this doc model only! The Ignition Control feature is not available
when this dock is used.
Warning: The external DC/DC converter previously used with the Thor VX8 or
Thor VX9 must be left in place to provide ground isolations.
Connecting the dock power input directly to vehicle power could
result in a safety hazard or equipment damage.
Warning: The cable shielding must be connected to chassis ground. Consult
the instructions later in this section for the respective power supply
type.
Caution: COM1 is used for screen blanking (via the power cable connector) and
is unavailable when the screen blanking box is attached. When a
screen blanking box is attached, any external serial device, such as a
scanner, must be connected to the COM2 port on the dock. If a screen
blanking box is not connected via the power cable, the COM1 port on
the dock is available for a serial device connection.
Caution: These instructions for use with Enhanced Dock with Thor VX8/VX9
Screen Blanking only.