FreeWave 2.4 GHz Wireless Modem Installation Manual

FreeWave Technologies
August 13, 2004

FreeWave Technologies, Inc.

2.4GHz Spread Spectrum Installation Guide
V3.7

2.4 GHz Wireless Modem
Installation Guide

This installation guide covers all models of the FreeWave Technologies 2.4 GHz spread spectrum
transceiver sold under FCC ID KNY2920513513419.

FreeWave Technologies, Inc.

1880 South Flatiron Court

Boulder, CO 80301

[phone]

[phone] Fax

www.FreeWave.com

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FreeWave Technologies
August 13, 2004

2.4GHz Spread Spectrum Installation Guide
V3.7

FCC Notification

This device complies with part 15 of the FCC rules. Operation
is subject to the following two conditions:

1) This device may not cause harmful interference

2) this device must accept any interference received, including
interference that may cause undesired operation.

This device must be operated as supplied by FreeWave
Technologies, Inc. Any changes or modifications made to the
device without the express written approval of FreeWave
Technologies may void the user's authority to operate the
device.

CAUTION: This device has a maximum transmitted output power of 500mW. It is

recommended that the transmit antenna be kept at least 36 cm away
from nearby persons to satisfy FCC RF exposure requirements.

Note: This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses, and can radiate radio
frequency energy. If not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged
to try to correct the interference by one or more of the following measures:

♦ Reorient or relocate the receiving antenna.
♦ Increase the separation between the equipment and receiver.
♦ Connect the equipment into an outlet on a circuit different from that to which

the receiver is connected to.

♦ Consult the dealer or an experienced radio/TV technician for help.
Note: Whenever any FreeWave Technologies module is placed inside an

enclosure a label must be placed on the outside of that enclosure which includes
the module's FCC ID.

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FreeWave Technologies
August 13, 2004

2.4GHz Spread Spectrum Installation Guide
V3.7

ETSI:
"European Telecommunications Standards Institute"
“Institut européen des normes de telecommunication”

This device must be operated as supplied by FreeWave Technologies, Inc. Any
changes or modifications made to the device without the express written approval of
FreeWave Technologies may void the user's authority to operate the device.

ETSI EMC standards EN 300 826 (common to – 328 and – 440 standards)

The device must be installed in a metal enclosure that is electrically grounded to
meet safety requirements.

ETSI standards ETSI EN 300 328

This device complies under two conditions:
(1) EN 300 328 operating mode is selected in the setup menu.
(2) EIRP maximum limit of 100 mW (20 dBm) is met. A programmed maximum

power setting of “10” results in device transmit output power of 100 mW (20
dBm). Under this condition the total gain including all cables and the antenna
must not exceed 0 dB. If the total gain exceeds 0 dB, the device power
setting must be reduced to meet the 100 mW (20 dBm) EIRP limit.

ETSI standards ETSI EN 300 440

Applicable definition: RFID as defined in the ERC/REC 70-03E, Annex 11:
“…radio frequency identification (RFID) applications including for example automatic

article identification, asset tracking, alarm systems, waste management, personal
identification, access control, proximity sensors, anti-theft systems, data transfer to
handheld devices and wireless control systems.”

This device complies under three conditions:
(1) EN 300 440 operating mode is selected in the setup menu.
(2) EIRP maximum limit of 500 mW (27 dBm) is met. A programmed maximum

power setting of “10” results in device transmit output power of 500 mW (27
dBm). Under this condition the total gain including all cables and the antenna
must not exceed 0 dB. If the total gain exceeds 0 dB, the device power
setting must be reduced to meet the 500 mW (20 dBm) EIRP limit (see chart
settings chart below).

(3) Antenna requirements:

a. Beam-width equal or less than +/- 45 degrees horizontal.
b. Side-lobe attenuation equal or more than 15 dB.
c. Physical protection (e.g. antenna dome) with dimensions to limit the

power transfer from the RFID antenna to a quarter wave matched dipole
positioned at an extreme close proximity to less than or equal to + 15
dBm.

(4) Outside use only.

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FreeWave Technologies
August 13, 2004

2.4GHz Spread Spectrum Installation Guide
V3.7

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:

Setting mW dBm

10

9
8
7
6
5
4
3
2
1
0

2.4 GHz (typical)

500
450
430
400
350
300
200
125

60
20

0.5

+27
+26.5
+26.3

+26
+25.4
+24.8

+23

+21

+18

+13

-3

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 omni­directional 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:

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