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L.R. Nelson Corporation

One Sprinkler Lane

Peoria, IL 61615

OEM Manual

8602 Radio Module

- 1 -

General Information

The 8602 module was designed for

point to point operation between a pair of modules, one designated as master

and the other designated as slave. Point to multi-point is not supported.

Features

• The Radio module contains it’s own shielding, alleviating the need for the

final product that the module is used in from having to have it’s own

shielding.

• All operations of the radio portion of the unit are controlled by the on-board

micro controller and thus transparent to the system integrator. All that is

required is to issue serial commands.

• The power supplies to the RF portions of the radio are regulated on-board

alleviating the need for strict power supply regulation to maintain

compliance.

• The antenna is permanently attached to the unit, alleviating the need for

additional labor installing an antenna.

L.R. Nelson Radio Transceiver

Radio Frequency ISM 2.4 GHz

Frequency Range 2.455-2.467 GHz

Type FHSS

Power Output 30mW

Receiver Sensitivity -105dBm

Range LOS 1000ft/300m

Air Baud Rate 2400bps

Operating Temp -23 to 65°C

Storage Temp -29 to 80°C

Power Consumption (5V) idle 40mA, Rx 110mA, Tx 170mA

Hardware Interface TTL Serial, 9600b, 8 data, 1 stop, no

parity

Software Interface Nelson Serial Protocol

Summary of content (11 pages)

PAGE 1
L.R. Nelson Corporation One Sprinkler Lane Peoria, IL 61615 OEM Manual 8602 Radio Module General Information The 8602 module was designed for point to point operation between a pair of modules, one designated as master and the other designated as slave. Point to multi-point is not supported. Features • The Radio module contains it’s own shielding, alleviating the need for the final product that the module is used in from having to have it’s own shielding.
PAGE 2
L.R. Nelson Corporation One Sprinkler Lane Peoria, IL 61615 OEM Manual 8602 Radio Module Requirements for compliance • The antenna must be kept intact to maintain compliance. Alternative antennae are not supported. • The metal housing must be kept intact to maintain the module’s shielding properties. The module must be kept unmodified as received except for straightening the antenna if it is received out-of-shape due to shipping.
PAGE 3
L.R. Nelson Corporation One Sprinkler Lane Peoria, IL 61615 OEM Manual 8602 Radio Module Life Support Application These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. L.R. Nelson customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify L.R. Nelson for any damages resulting from such improper use or sale.
PAGE 4
L.R. Nelson Corporation One Sprinkler Lane Peoria, IL 61615 OEM Manual 8602 Radio Module • • • • The signal must pass clear through the structure to get out the other side. –Good range Mounted on the inside of an exterior wall of a building. –Reduced range Mounted inside of a building with more than one wall to pass through before signal reaches outdoors. -Further reduces range Mounting higher is usually better than lower.
PAGE 5
L.R. Nelson Corporation One Sprinkler Lane Peoria, IL 61615 OEM Manual 8602 Radio Module • • The presence of power lines or strong radio signal sources could reduce range Weather conditions can effect range. We have observed noticeable differences from one day to the next at the same location. Troubleshooting • • • Both units must have power for radio operation. Match ID Codes If an antenna is badly bent gently return the antenna back to its original shape.
PAGE 6
L.R. Nelson Corporation One Sprinkler Lane Peoria, IL 61615 OEM Manual 8602 Radio Module Technical Information EZ Pro Controller and Command Communication Protocol Definition Version 0.9 L.R. Nelson Corporation This document describes the serial link protocol and packet formats used for the EZ Pro Radio system. SYSTEM DESCRIPTION The system is made up of two entities that require data communications over an ISM band 2.4GHz FHSS (frequency hopping spread-spectrum) radio system.
PAGE 7
L.R. Nelson Corporation One Sprinkler Lane Peoria, IL 61615 OEM Manual 8602 Radio Module hosts, thus breaking the connection. Each application side is responsible for time-out triggers in the case of connection packet failing to reach its destination. There are essentially two layers in the protocol stack to define operation from end-end. They are: physical layer and the data-link layer (Nelson Protocol.) 1. PHY Layer, describes the RF layer, frame format and timing information 2.
PAGE 8
L.R. Nelson Corporation One Sprinkler Lane Peoria, IL 61615 OEM Manual 8602 Radio Module LOCALIZED PACKETS Local packets are packets sent between the remote/base device and the radio modules. These are used to setup the radio for a connection or to determine radio link diagnostics. All localized packets are in the format shown in Figure 2. To Radio Module, CMD Bytes: 0x80 – Slave connect, sends 2 DATA words, low order byte first, (SRC word, a DEST word.
PAGE 9
L.R. Nelson Corporation One Sprinkler Lane Peoria, IL 61615 OEM Manual 8602 Radio Module 0x8F – Reserved From Radio Module CMD Bytes: 0x80 – Slave connect acknowledgement 0x81 – Master dwell acknowledgement 0x82 – Sleep acknowledgemen83h – Sends 1 DATA byte channel quality, 1 DATA byte indicating is the radio is IDLE-ing or CONNECTED. 0x84 – Software version - sends a 6 bytes packet of the format 'EZn.
PAGE 10
L.R.
PAGE 11
L.R. Nelson Corporation One Sprinkler Lane Peoria, IL 61615 OEM Manual 8602 Radio Module ELECTRICAL INTERFACE Power Radio requires a regulated source of 4.5-5.5 volts DC at a maximum current of 170mA. Communications interface The serial link data-rate is 9600 baud, 8 data bits, 1 stop bit, no parity. Communications signal path is 5V TTL level only. PINS TX, RX & GND – Self-explanatory. 5VDC – max current required by the radio (see above.