Ewave SCREAMER 422 Manuel d'utilisateur

EWAVE Inc.7419 Gracefield Ln.Dallas, Texas 75248(972) 248-2931www.electrowave.comEwave Radio Modem Technical ManualVersion 1.02Ewave Radio Modems cove

Ewave Radio Modem User’s Manual V1.02Copyright © 2001 by Ewave, Inc.10developer to tell the Ewave Radio Modem what size data blocks to expect so that

Ewave Radio Modem User’s Manual V1.02Copyright © 2001 by Ewave, Inc.11ConfigurationNameDescription Packet SizeThreshold(bytes)?Wait beforeTransmittal(

Ewave Radio Modem User’s Manual V1.02Copyright © 2001 by Ewave, Inc.12For “Break”-configured modems with Attention ON, to enter Command state, apply p

Ewave Radio Modem User’s Manual V1.02Copyright © 2001 by Ewave, Inc.134 CommandsThis section describes the format of all Ewave Radio Modem commands. I

Ewave Radio Modem User’s Manual V1.02Copyright © 2001 by Ewave, Inc.144.3 QUERY STATION TYPESend:S? Modem responds with its station type, either “Base

Ewave Radio Modem User’s Manual V1.02Copyright © 2001 by Ewave, Inc.154.6 TX POWER ON/OFFSend:Tn Transmitter Power On.Tf Transmitter Power Off. Radio

Ewave Radio Modem User’s Manual V1.02Copyright © 2001 by Ewave, Inc.16Desired Packet Size Threshold (in bytes) Value of x(hex)Value of x(decimal)Comma

Ewave Radio Modem User’s Manual V1.02Copyright © 2001 by Ewave, Inc.175 SpecificationsVoltage (V): 5.0 regulated, OR 7.2-10 unregulatedCurrent (A) 140

Ewave Radio Modem User’s Manual V1.02Copyright © 2001 by Ewave, Inc.186 Transmit FrequenciesChannel # Mobile (Short Ant) Base (Long Ant)TX Freq (MHz)

Ewave Radio Modem User’s Manual V1.02Copyright © 2001 by Ewave, Inc.197 Ordering InformationPlease consult our web site the latest pricing and orderin

Ewave Radio Modem User’s Manual V1.02Copyright © 2001 by Ewave, Inc.21 OVERVIEW...

Ewave Radio Modem User’s Manual V1.02Copyright © 2001 by Ewave, Inc.209 Revision HistoryFebruary 11, 2001 – M. Shepard -- Initial revision.May 18, 200

Ewave Radio Modem User’s Manual V1.02Copyright © 2001 by Ewave, Inc.31 OverviewThe Ewave family of wireless radio-frequency data modems aredesigned fo

Ewave Radio Modem User’s Manual V1.02Copyright © 2001 by Ewave, Inc.4• An Enhanced Modem is also available which includes all the above Protocol featu

Ewave Radio Modem User’s Manual V1.02Copyright © 2001 by Ewave, Inc.52 InstallationThere are no special installation requirements for the Ewave Radio

Ewave Radio Modem User’s Manual V1.02Copyright © 2001 by Ewave, Inc.63 Theory of Operation3.1Anatomy of an Ewave Radio ModemThe picture below shows on

Ewave Radio Modem User’s Manual V1.02Copyright © 2001 by Ewave, Inc.73.2 Connector Pin-outsThere are two different pin-outs for the Ewave Radio Modems

Ewave Radio Modem User’s Manual V1.02Copyright © 2001 by Ewave, Inc.83.5 Characteristics of Packet Radio CommunicationThe Ewave packet radio modem has

Ewave Radio Modem User’s Manual V1.02Copyright © 2001 by Ewave, Inc.9fact, as the number of data bytes per packet increases, the time devoted to the p