User manual

CONFIGURATION
001-7100-100 Version 0 Page 49 of 66 Vanguard 3G User Manual CDMA Version
5.7.4.2 Power Management
The VANGUARD 3G unit is designed to stay ON even if the ignition is turned OFF. You can configure
your Vanguard 3G unit to automatically shut down 1, 5, 30, or 60 minutes after ignition is turned off
or when the supply voltage drops to a certain level.
Shutdown Method: Disabled by default (unit always ON after ignition is turned OFF). Select
“Power Off” to enable power management.
After ignition line off: Select between the following time intervals: 1 minute, 5 minutes, 30
minutes, or 60 minutes.
When Voltage Drops to: Enter desired voltage. Enter “0” to disable. (Note: A value of 11V would
be usually entered here as a precaution in order to ensure the car battery does not drain.)
Figure 32 - Power Management
5.8 SNMP
Not supported in the current version
5.9 GPS Status and Settings
The Vanguard 3G unit incorporates a highly sensitive 16-channel GPS receiver and an intelligent
algorithm that offers outstanding receive sensitivity. Summarized below are the specifications of the
integrated GPS module:
Typical Acquisition sensitivity -138 dBm
Typical Tracking sensitivity -147 dBm
Reacquisition time Less than 1 second
Average Cold/Warm/Hot Start time to first fix Under 45/33/3.5 seconds
Position Accuracy
2D CEP 2.5 meters
3D SEP 5 meters
DGPS corrected <2 meters