User Manual

Table Of Contents
2
Installation
44
CrossCheck CDPD Mobile Unit Manual
2.10
CrossCheck CDPD Power
The CrossCheck CDPD operates on input voltages from 932 VDC.
The low-noise amplifier integrated on the GPS antenna draws power
from the CrossCheck CDPD through the antenna cable. The
CrossCheck CDPD does not require any special power-up or down
sequencing.
The CrossCheck CDPDs power circuitry is designed to protect the
unit from random power fluctuations and conditions. Input circuits
protect against transient voltage spikes found in most auto and truck
environments. An external fuse protects against excessive current.
For more information on the CrossCheck CDPD power requirements,
see Appendix A.