Users Manual Chapter 5

Thor VM3A Vehicle-Mounted Computer 81
Instructions
1. Attach and secure the desired mounting bracket to the highest point on the
safety cage, following these precautions:
• The plate must be mounted so the antenna is not damaged while the vehicle
or any of its parts are moving.
• The antenna mounting portion of the bracket must be parallel to the floor.
• If using two antennas, they should be mounted at least 12 inches (304.8mm)
apart for best performance.
2. Secure the whip antenna to the mounting bracket.
3. Connect the antenna cable to the whip antenna.
4. Use cable ties to secure the coaxial cable to the vehicle as necessary. Make sure
the cable is routed so it is not damaged by any moving parts of the vehicle.
5. Connect the cable to the antenna connector (Wi-Fi Main or Wi-Fi Aux) on the
computer.
6. Repeat the steps above for the second 802.11 antenna.
Connect Power
See Power Supply Connector for connector pinout.
For the VM1D Standard Dock and VM3D Enhanced Dock, power options include:
• 12-48 VDC Vehicles (10-60 VDC Direct Connection) - Direct connection to
vehicle power.
• 60-144 VDC Vehicles (50-150 VDC Power Supply, Screws on Side of Lid) -
Requires the use of a DC/DC power supply.
• 60-144 VDC Vehicles (50-150 VDC Power Supply, Screws on Top of Lid) -
Requires the use of a DC/DC power supply.
• VX5/VX6/VX7 Adapter Cable - For applications where the VM3A replaces a
previously installed VX6 or VX7.
• Thor VX8/Thor VX9 Adapter Cable - For applications where the Thor VM3A (with
a VM1D Standard Dock or VM3D Enhanced dock (replaces a previously installed
Thor VX8 or Thor VX9.
• CV60 Adapter Cable - For applications where the VM3A replaces a previously
installed.
• Screen Blanking Installation - Optional connection to blank the VM3A display
while the vehicle is in motion.
When using the Thor VM3A with AC power, use the VMXD Enhanced Dock for Off-
Vehicle Use and:
• External AC/DC Power Supply - For use when DC power is not available to power
the computer, such as in an office environment.