Cooper Power Systems RFN420FL User Manual

RFN420fL User’s Guide

Document Number

XXXX

Revision 1

Cooper Power Systems

20201 Century Boulevard, Suite 250

Germantown, MD 20874 USA

www.cooperpowereas.com

Tel [phone]

Fax: [phone]

Contents

1 About the RFN420fL ............................................................................................................................... 3

2 Regulatory Notices................................................................................................................................. 4

3 RFN420fL Specifications ....................................................................................................................... 6

XXXXX-01 2 RFN420fL User’s Guide

1 About the RFN420fL

The RFN420fL is a radio communications device designed for use in L+G Focus meters.
It can also be used in Cooper Power Systems Gateways and Relay Nodes. The
RFN420fL provides a 915 MHz radio interface to an RF mesh network, and a ZigBee
interface for HAN applications.

The RFN420fL operates from a power source of 5.0 VDC, received from the host device.
The radio modules operate in license-free bands at either 915 MHz (902.75 to 927.25
MHz) or 2400 MHz (2400 to 2483.5 MHz). RFN420fL Nodes are fully compatible with
mesh network hardware, protocols and operations. Two radio transmission data rates are
available: 76.8 kb/s and153.6 kb/s. The transmission power of the 915 MHz radio is
adjustable from 27 dBm to -20 dBm. The transmission power of the 2400 MHz radio is
fixed at +20 dBm.

XXXXX-01 3 RFN420fL User’s Guide

Warning

The Original Equipment Manufacturer (OEM) must ensure that FCC
Labeling requirements are met. This includes a clearly visible label on the
outside of the OEM enclosure specifying the Cooper Power Systems FCC
identifier (FCC ID: P9X-RFN420FL) and IC Number (IC: 6766A-RFN420FL)
as well as the FCC Notice below.

Warning

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, and
(2) This device must accept any interference received, including interference that

may cause undesired operation.

Warning

Changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.

Warning

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 and, 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.

 Consult the dealer or an experienced radio/TV technician for help.

Warning

The installer of this radio equipment must ensure that the antenna is located
or pointed such that it does not emit RF field in excess of Health Canada
limits for the general population; consult Safety Code 6, obtainable from
Health Canada’s website www.hc-sc.gc.ca.

2 Regulatory Notices

XXXXX-01 4 RFN420fL User’s Guide

Warning

To comply with FCC RF exposure compliance requirements, the antenna
used for this transmitter must be installed to provide a separation distance of
at least 20 cm from all persons and must not be co-located or operate in
conjunction with any other antenna or transmitter.”

As such, the radio component of this device is intended only for OEM
integrators under the following two conditions:

The antenna must be installed such that 20 cm is maintained between the
antenna and users.

The transmitter module may not be co-located with any other transmitter or
antenna.

As long as the two conditions above are met, further transmitter testing will
not be required. However, the OEM integrator is still responsible for testing
their end product for any additional compliance requirements required with
this module installed (e.g., digital device emissions, PC peripheral
requirements).

In the event that these conditions cannot be met (for example, co-location
with another transmitter), then the FCC authorization is no longer considered
valid and the FCC ID cannot be used on the final product. In these
circumstances, the OEM integrator will be responsible for re-evaluating the
end product (including the transmitter) and obtaining a separate FCC
authorization.

End Product Labeling

This transmitter module is authorized only for use in devices where the
antenna may be installed such that 20 cm may be maintained between the
antenna and users (for example access points, routers, wireless ASDL
modems, certain laptop configurations, and similar equipment). The final

end product must be labeled in a visible area with the following: “FCC

ID: P9X-RFN420FL”.
The radio component is an integral part of the RFN420fL and cannot be

removed.

Warning

Transmitters with Detachable Antennas

This device has been designed to operate with the antennas listed below,
and having a maximum gain of 8 dB. Antennas not included in this list or
having a gain greater than 8 dB are strictly prohibited for use with this
device. The required antenna impedance is 50 ohms.

Antennas that may be used with this product include:

 GH908U-PRO 900MHz Omnidirectional – 8dBi Gain
 TRA9023NP - Antenex Phantom 902-928MHz – 3dB Gain
 915MHz Co-linear Antenna -2dB gain

To reduce potential radio interference to other users, the antenna type and
its gain should be so chosen that the equivalent isotropically radiated power
(e.i.r.p.) is not more than that permitted for successful communication.

XXXXX-01 5 RFN420fL User’s Guide

Radio Specifications

Operating frequency

902.75 – 927.25 MHz
2400 – 2483.5 MHz

Reliable data transmission

Error detection, correction and retransmission

RF output power

915 MHz: 27 dBm to -20 dBm
2400 MHz: 20 dBm

Data rate

76.8 kb/s, 153.6 kb/s

Receiver sensitivity

-98 dBm (@ 0.1% BER, +25° C

Range (w/ omni antenna)

Outdoor

1,000 m (3200 ft)

Indoor

75 – 150 m (225 – 490 ft)

Mode

Frequency hopping spread spectrum

Mechanical Specifications

Weight

Unavailable

Dimensions

27mm x 27mm x 3.5mm

Operating Conditions

Environmental

-40° C to +85° C
0 – 95% non-condensing humidity

Power supply

AC 120V (regulated to 5.0 VDC and 3.3 VDC on-board)

Power consumption

< 1W

3 RFN420fL Specifications

XXXXX-01 6 RFN420fL User’s Guide

Cooper Power Systems

20201 Century Boulevard, Suite 250

Germantown, MD 20874 USA

www.cooperpowereas.com

Tel [phone]

Fax: [phone]