Rainbow-electronics GE863-GPS low power User Manual download pdf (Page 13)

GE863-GPS Software User Guide

1vv0300724 Rev. 3 - 05/07/07

2.4 Turning OFF the GE863-GPS

The turning off of the device can be done in two ways:

• by software command

• by hardware shutdown

When the device is shut down by software command or by hardware shutdown, it issues to the

network a detach request that informs the network that the device will not be reachable any more.

2.4.1.1 Software shutdown

• Send command

AT#SHDN<cr>

• wait for

response

The device shuts down with the following sequence of activities:

• Detach from the network

• Module Shutdown

In the case of Network unavailability the detach will be attempted few seconds (typical 6secs).

After this timeout the module will be shut down.

2.4.1.2 Hardware shutdown

To turn OFF the GE863-GPS the pin ON# must be tied low for at least 2 second and then released.

The same circuitry for the power on can be used.

The device shuts down after the release of the ON# pin.

TIP: To check if the device has powered off, the hardware line PWRMON should be monitored.

When it goes low, the device has powered off.

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Rainbow-electronics GE863-GPS low power User Manual Page 13