Intermec Janus 900 Manuale utente

JANUS ®900 MHz

Radio Frequency

P/N 060207-002

Quick Reference Guide

IntermecCorporation

6001 36th Avenue West

P.O. Box 4280

Everett, WA 98203-9280

U.S. technical and service support: 1-800-755-5505

U.S. media supplies ordering information: 1-800-227-9947

Canadian technical and service support: 1-800-688-7043

Canadian media supplies ordering information: 1-800-268-6936

Outside U.S. and Canada: Contact your local Intermec service supplier.

The information contained herein is proprietary and is provided solely for the purpose of allowing

customers to operate and/or service Intermec manufactured equipment and is not to be released,

reproduced, or used for any other purpose without written permission of Intermec.

Information and specifications in this manual are subject to change without notice.

1996 by Intermec Corporation

The word Intermec, the Intermec logo, JANUS, IRL, TRAKKER, Antares, Duratherm, Precision Print,

PrintSet, Virtual Wedge, and CrossBar are either trademarks or registered trademarks of Intermec

Corporation.

Throughout this manual, trademarked names may be used. Rather than put a trademark (or ®)

symbol in every occurrence of a trademarked name, we state that we are using the names only in an

editorial fashion, and to the benefit of the trademark owner, with no intention of infringement.

Manual Change Record

This page records the changes to this manual. The manual was originally released at -001.

Version Date Description of Change

002 7/95 JANUS 2050 information added.

Contents

Overview of an RF System 7

Setting Up RF Communications 8

Attaching the Antenna 8

Configuring the RF Parameters 10

Unloading and Loading the RF Protocol Handler 12

Using RF Communications 13

Understanding the RF Status Icons and LEDs 13

Managing Your J2010 and JR2020 Battery Power 14

Troubleshooting Your J2010 and Your JR2020 15

Troubleshooting Your J2050 16

Configuring Your JANUS RF Device 17

Using RF Communications 17

Using the Interactive Configuration Application 18

Scanning Bar Code Labels 19

RF Configuration Parameters 19

Acknowledgment Delay 19

Broadcast Receipt 20

Channel Allow 21

Channel Select 22

Device Address 23

Duty Cycle Percent 26

Duty Cycle Period 27

Loopback 29

Network ID 29

Repeat Count 31

Retry Limit 32

RF Protocol 33

RFNC Address 34

JANUS 900 MHz Radio Frquency Quick Reference Guide

Nuggetfont

This guide describes how to use radio frequency communications on the JANUS RF

devices (J2010 with an RF back and JR2020 handheld data collection computers and

J2050 vehicle-mount computer). It also tells you how to attach the antenna and

configure the JANUS RF devices. For more help about any other features, refer to your

JANUS user’s manual.

Overview of an RF System

A radio frequency (RF) data collection system establishes a two-way radio link

between a JANUS RF device and a central network controller. The data from

the JANUS RF device is sent in real time through the RF system to the network

controller and then on to the host computer. The RF link is completely

transparent to the user. The following illustration shows one example of an RF

data collection system.

Host Computer

9181 Base

Radio Unit

9183

Repeater

9180

Network

Controller

JR2020 (RF)

J2010 with

an RF Back

20X0Q.004

With your JANUS RF device you can move anywhere within range of a base

radio unit (BRU) or a radio repeater and transmit data to and from a network

controller that is connected to a host computer. If your controller has a 900

MHz RF ISA card installed, you can transmit directly to it. For help in learning

about RF systems, refer to your controller user’s manual.

JANUS 900 MHz Radio Frequency Quick Reference Guide

Nuggetfont

Setting Up RF Communications

Before you can use RF communications on the JANUS RF device, you need to

do the following:

•Attach the antenna to the J2010 with an RF back, JR2020, or J2050.

•Configure the RF parameters.

•Make sure that the RF protocol handler is loaded.

Attaching the Antenna

Caution

The antenna must be attached before turning on the JANUS RF device. The

internal radio could be damaged if the antenna is not attached.

Conseil

Si l’antenna n’est pas attachée avant que l’appareil RF de JANUS soit mise

sous tension, la radio interne peut être endommagée.

Note: Do not interchange antennas between any of the JANUS RF devices. Each

antenna is built specifically for the radio that is installed in the device.

1. Make sure the JANUS RF device is switched off. If the JANUS RF device is

on, switch it off by pressing

2. Screw the antenna into the connector of the JANUS RF device. Refer to the

following illustrations.

3. Switch on the JANUS RF device by pressing

JANUS 900 MHz Radio Frquency Quick Reference Guide

Nuggetfont

Attaching the J2010 Antenna

20X0Q.002

Attaching the J2050 Antenna

2050U.009

JANUS 900 MHz Radio Frequency Quick Reference Guide

Nuggetfont

Attaching the JR2020 Antenna

20X0Q.003

Configuring the RF Parameters

The RF configuration parameters define radio communications between the

JANUS RF device and the Intermec RF data collection system.

Note: The software version of your 9180 network controller can affect which RF

configuration parameters you set. Refer to the next section, “About Your Controller

Software Version.”

RF Configuration

Parameter Default Setting

Acknowledgment Delay 100 milliseconds

Broadcast Receipt Enabled

Channel Allow All channels are excluded from the search pattern

Channel Select 924 MHz

Device Address 0 (turned off)

JANUS 900 MHz Radio Frquency Quick Reference Guide

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RF Configuration

Parameter Default Setting

Duty Cycle Percent (reader)

Duty Cycle Percent (J2050) 30%

100%

Duty Cycle Period 1 second

Loopback Disabled

Network ID Channel search disabled

Repeat Count 0 repeaters

Retry Limit 0 (optimized setting)

RF Protocol Enabled

RFNC Address RFNC 0

To configure the JANUS RF device, follow the instructions in “Configuring a

JANUS RF Device” later in this guide.

About Your Controller Software Version

The software version that is running on your 9180 Network Controller

determines the RF configuration parameters you need to set on your JANUS RF

devices. If you have a 9180 controller running software version 1.3 or earlier,

you do not have some features that the 9180 controller with software version

2.0 and the 9185 Network Controller have. These enhanced features include

time broadcast, channel search capabilities, network management, and support

for multiple BRUs.

If the 9180 controller is running software version 1.3 or earlier

Parameter on

JANUS RF device Must match

Device Address The address used by the network controller to identify each

JANUS RF device.

Channel Select The channel set for the BRU.

Network ID 0

RFNC Address A value that is twice the setting on the network controller.

For example, if the network controller address is 2, you would

set the RFNC address on the JANUS RF device to 4.

Repeat Count The setting on the network controller.

JANUS 900 MHz Radio Frequency Quick Reference Guide

Nuggetfont

If the 9180 controller is running software version 2.0 or you have a 9185 controller

Parameter on

JANUS RF device Must match

Device Address The address used by the network controller to identify each

JANUS RF device.

Channel Select The channel set for the BRU that is most frequently used by the

JANUS RF device.

Network ID The value entered for the network ID on the network controller.

Note: The Channel Allow parameter must be set if you are going to be communicating

on more than one frequency by using the channel search feature.

For help in learning about the network controller, base radio unit, and radio

repeater, refer to your user’s manual.

Unloading and Loading the RF Protocol Handler

The protocol handler for RF communications automatically loads when you

boot a JANUS RF device.

If you do not need the RF protocol handler, you can unload it. For help in

learning about protocol handlers, refer to your JANUS user’s manual.

To unload the RF protocol handler

•From the JANUS RF device DOS prompt, type:

unload rfph 4

Note: The “4” in the command line indicates you are unloading the protocol

handler for COM port 4 (RF interface).

If you have unloaded the RF protocol handler, and want to use RF

communications without rebooting your JANUS RF device, you can load it

again.

To load the protocol handler

•From the JANUS RF device DOS prompt, type:

rfph 4

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