User Manual

2
Installation
18
CrossCheck CDPD Mobile Unit Manual
The installer must provide an appropriate selection of fasteners to
secure the CrossCheck CDPD to the mounting surface.
• When using self-tapping screws:
– Select an appropriate size and length for the mounting
surface.
– The hole size leaves some allowance for holes drilled
slightly off center from the specified dimensions.
• When using machine screws:
– Trimble recommends the use of number m3.5
(or number 6) pan-head machine screws.
– Select a screw length, which extends a safe distance
beyond the mounting surface.
– Secure the screw with a washer and nut. Lock washers are
recommended to prevent vehicle vibration from loosening
the fasteners.
2.6.1
Connecting CrossCheck CDPD to the Vehicle Chassis
For proper operation, the aluminum chassis of the CrossCheck CDPD
must be connected electrically (grounded) to the chassis of the vehicle
on which it installed. This can be accomplished in two ways:
• Direct connection through metal screws (preferred)
• Connection through the chassis ground wire