FreeWave Technologies
August 13, 2004
2.4GHz Spread Spectrum Installation Guide
V3.7
LIG0002AC Rev A
4 of 12
A. Transceiver installation steps
To install the FreeWave 2.4GHz transceiver, follow the basic steps given below:
1.
Mount the transceiver on a flat, stable surface using mounting holes in the corners of the
transceiver. See section labeled
Hardware Mounting Instructions
for detailed installation
instructions.
2.
Install the antenna and connect the antenna feed line to the transceiver. If you are installing
a directional antenna, preset the antenna’s direction appropriately.
3.
Connect a computer to the transceiver’s RS232 port (please refer to the part C of this
addendum for more information about the transceiver’s pin assignment). This computer will
be used to set the transceiver’s configurations.
4.
Connect the transceiver to a power supply.
5.
Set the transceiver configuration according to the system topology and data terminal
equipment requirements. Default transceiver settings allow user to do a quick installation
without major changes in transceiver’s configuration. But, there is one parameter that
must
be considered for a new installation – transceiver’s power output settings.
Table with RF Xmit Power settings vs. RF Output Power of the transceiver is given below:
Please, note that the output power in the table above may slightly very from transceiver to
transceiver, but it will never be above 27 dBm for the RF Xmit Power settings of 10.
Transceiver output power level
must be
set according to the tables given below to satisfy
FCC maximum EIRP requirement. Per FCC regulations, any antenna used with FreeWave
transceivers must either be one of the approved antennas shown below or an antenna with
comparable performance parameters. FreeWave Technologies offers a variety of omni-
directional and directional external antennas with both bracket and magnetic mounts. The
complete list of antennas available from FreeWave Technologies including antenna gains,
antenna manufacturer’s information, and antenna’s characteristics is shown below:
2.4 GHz (typical)
Setting mW dBm
10
500
+27
9
450
+26.5
8
430
+26.3
7
400
+26
6
350
+25.4
5
300
+24.8
4
200
+23
3
125
+21
2
60
+18
1
20
+13
0
0.5
-3
