Power modes – Airlink EDGE/GPRS User Manual
Page 40
PinPoint-E EDGE/GPRS - User Guide, version 2.32
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External Inputs & Power Control
FIGURE 4.
DTR and RTS switches using Pin 5 (signal GND) as the common ground
Power Modes
FIGURE 5.
Wireless Ace: Low Power
The PinPoint-E can be configured to switch power modes in response to specific events in order
to conserve a vehicle's battery life. The stand-by state (low-power mode) will prevent the modem
from draining the battery while allowing the modem to quickly power up to regular operation
when it is needed.
The PinPoint-E can power down and enter the stand-by state when the voltage to the modem
drops below a configured threshold (such as when the vehicle is turned off), or when DTR
changes (commonly a contact or voltage controlled by the key switch, signaling when the vehicle
is turned off).
Note:
If one or both DTR or RTS have been configured to be used as digital inputs,
then low power mode cannot be configured to respond to DTR.
If you want to use Low Power Mode, you should choose either voltage level or
DTR/RTS as the trigger, not both.