User Manual

2
Installation
46
CrossCheck CDPD Mobile Unit Manual
The CrossCheck CDPD is protected against both input power over-
voltage and reverse polarity. The primary power cable has a built-in
fuse. The DC ground line connects to the vehicle’s DC ground. The
ignition-sense lead, if connected to a source of ignition-switched
battery voltage, senses when the vehicle’s ignition is active. There are
three connection options for connecting the power, ground, and
ignition-sense wires. These options are described in the next three
sections.
2.10.1
Connections For Power Management
The CrossCheck CDPD operates continuously only when the vehicle
is running. When the ignition is off, the CrossCheck CDPD goes to
sleep, drawing reduced power. For more information on current draw
in different operation modes, see Appendix A.
The default Power Management configuration for the
CrossCheck CDPD is the following:
• When the ignition is OFF, the unit goes to sleep state after
3 minutes.
• If the EchoLDX is connected to the CrossCheck, the EchoLDX
will turn off 1 minute after ignition OFF is detected.