User Manual

Application Development
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Boomer II User Manual & Integrator’s Guide
Wavenet Technology 82 BM210012WT09
Usually this situation does not produce notification of network contact
and reacquisition.
Low battery
Network contact is dropped when a low battery condition is reached.
This follows a battery alert notification (warning) that occurs while the
battery still has some remaining usable capacity. The time between
these events is much influenced by the battery technology and the level
of transmit activity within the wireless modem. A relatively inactive
device provides more warning time than an active device. Also, an
alkaline battery provides more warning than a NiCad battery.
Low buffers
If outbound SDUs remain unread within the wireless modem, its
outbound buffers are eventually filled. When this occurs, network
contact is dropped. Network contact is re-established when the internal
buffer pool within the wireless modem reaches a usable level, as a
result of SDU reads by the application. This situation never occurs
when the client application reads continuously to clear the wireless
modem of received outbound SDUs.
Receiver disabled
The client application can disable the wireless modem transceiver by
using the Receiver Disable NCL command. When this occurs, network
contact is dropped and the radio is turned off. Network contact is re-
established when the application issues the Receiver Enable, then the
Transmitter Enable NCL commands.
Power Management
The following modem power management options can be included in
an application to maximize battery life:
PowerSave Mode
The wireless modem defaults to PowerSave mode when turned on if
the network supports the PowerSave protocol. If you are concerned
about latency of unsolicited outbound messages, you can turn off the
PowerSave mode, but at the expense of consuming more battery power.
For details, refer to the NCL 1.2 command S_POWER_SAVE_MODE.
See “Battery Life Considerations” and “PowerSave Protocol” on the
following page.
Dynamically modifying the PowerSave mode of the device is not
recommended.
Inactivity Time-Out
Configure inactivity time-out to trigger if a message is not read from
the modem within a certain number of minutes.