Technical data

1.1.1 MODEL NUMBERS
The AlphaWave naming protocol utilizes a two (2) letter prefix AW
and a three (3) character suffix to identify which part of the fre-
quency range the particular transceiver operates on
AW100 150 to 170 MHz
AW200 220 to 235 MHz
AW400 403 to 470 MHz
1.1.2 N
ETWORK TOPOLOGIES
The AW Radio Modem supports Point-to-Point link (PTP) using Time
Division Duplex (TDD) protocol and Point-to-Multipoint (PMP) net-
work topology using Time Division Multiple Access (TDMA) protocol.
The wireless media access contention for the PMP network can be
resolved by an external controller through the data interface control
lines (RTS, CTS, DTR, DSR, and DCD). In addition, the following ver-
sions of the AW software/firmware offer built-in Media Access Con-
trol (MAC) protocols to service PMP network.
1.1.3 O
PERATING MODES
AW operating modes can be set through the CLI or through the ex-
ternal management application software. The following operating
modes are available for the AW radio modem:
• Half duplex operating provides up to 9.6/19.2/38.4 kbps user
data throughput. The “Transceiver” and “Repeater” are the
alternative protocols for the half duplex operation.
• Full duplex mode, with up to 4.8/9.6/19.2 kbps user data
throughput, is an alternative to the default half duplex.
• Sleep mode has automatic transmitter activation by an inter-
nal real-time clock, or by an external controller through the
data interface control lines (RTS and DTR), or by the trigger-
ing of the external Sense Inputs.
• Programmable automatic channel scanning of the Preferred
Channels is an alternative mode to the operation on the fixed
Frequency Channel.
• “Test” mode supports the radio installation using Built-in test
tools.
Page 1-3
AlphaWave Users Manual 3/21/2005
Chapter 1