Product manual

XStream‐PKG‐T™TelephoneRFModem–ProductManualv5.x00[2006.02.24]

2. RFModuleOperation

2.1. Modes of Operation

An on-board RF module enables the XStream-PKG-T RF Modem to send and receive data over-

the-air. The RF module operates in five modes.

Figure2‐01. RFModule’sModesofOperation

Themodemcanonlybeinonemodeatatime.

2.1.1. Idle Mode

When not receiving or transmitting data, the module is in Idle Mode. The module uses the same

amount of power in Idle Mode as it does in Receive Mode.

The modem shifts into the other modes of operation under the following conditions:

• Serial data is received in the DI Buffer (Transmit Mode)

• Valid RF data is received through the antenna (Receive Mode)

• Command Mode Sequence is issued (Command Mode)

• Sleep Mode condition is met (Sleep Mode)

After responding to any of the preceding conditions, the modem automatically transitions back

into Idle Mode.

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