Icom VHF MARINE TRANSCEIVER, IC-M502 Scan Operations, Scan types, Priority Scan, Normal Scan

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5 SCAN OPERATIONS

■Scan types

Scanning is an efﬁcient way to locate signals quickly over a wide frequency range. The transceiver has priority scan and normal scan.

When the weather alert function is in use, the selected weather channel is checked while scanning. (p. 31)

PRIORITY SCAN

	CH 01	CH 02
CH 06	CH 16	CH 03
	CH 05	CH 04

Priority scan searches through all tag channels in se- quence while monitoring channel 16. When a signal is de- tected on channel 16, scan pauses until the signal disap- pears; when a signal is detected on a channel other than channel 16, scan becomes dualwatch until the signal dis- appears.

Set the tag channels (scanned channel) before scanning. Clear the tag channels which inconveniently stop scanning, such as digital communication use.

Choose priority or normal scan in set mode. (p. 31)

NORMAL SCAN

CH 01	CH 02
CH 06	CH 03
CH 05	CH 04

Normal scan, like priority scan, searches through all tag channels in sequence. However, unlike priority scan, chan- nel 16 is not checked unless channel 16 is set as a tag channel.

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Contents IM502 Case of Emergency Channel 16 is automatically selectedTable of Contents Page Operating Rules Radio license for boaters U.S.A. onlyShip Station License OPERATOR’S LicenseTransmit Power Switch HI/LO Panel DescriptionPanel description Channel Selector Channel1DSC/POSITION Switch DSC/ENTPOS Function display PTT Switch PTT Channel UP/DOWN Switches Y/ZSame as the HI/LO switch on the front panel. p MicrophoneBasic Operation Channel selectionChannel Channel 9 Call channelMicrophone lock function Weather channelsCanadian channels Push once CH/WXPush HI/LO to select the output power if necessary Receiving and transmittingPush LO/DX to turn the receive attenuator on or OFF if NecessaryChannel names Call channel programming25W TAG äLEASURE Set mode Scrambler code item Optional voice scrambler operationActivating the scrambler Programming scrambler codes Optional scrambler function on or OFFDUALWATCH/TRI-WATCH Simulation Description OperationCall channel Scan Operations Scan typesPriority Scan Normal ScanClearing all tag channels in the selected channel group Setting tag channels Starting a scanScan starts DSC Operation Mmsi code programmingPosition and time programming LATÊÊÊÊ LonêêêêêPosition indication InputÊtimeUTCÊÊ LATÊ3434N LON13534EDistress call DistressÊÊTX LATÊ3523N LON13535EGPSÊUTC1234 Distress Completed WaitÊforÊACKTransmitting DSC calls Transmitting individual callÊindvêack DSC/ENTTransmitting individual acknowledgement ˘INDVÊACKTransmitting all ships call ˘AllÊshipsPush DSC/ENT to transmit the all ships call All ships call has been transmittedTransmitting position reply call Transmitting position request callPosêreq Setting the distress information SelÊitem ÊRCVÊcalls ˘DTRSÊset ÊSet-upSelÊnature ÊUndesign ˘Explosion ÊFlooding Push Distress for 5 sec. to transmit the distress callDSC individual ID Programming address IDDeleting address ID NameReceiving a distress call Receiving DSC callsReceiving a distress acknowledgement Receiving a distress relay acknowledgement Receiving a distress relay callReceiving an all ships call Receiving an individual callReceiving a geographical area call Receiving a position reply callReceiving a position request call ÊtomDSC set mode Offset timeSet-up ÊAddÊID ÊDeleteÊID ˘OffsetÊtime OffsetÊtime 0000 1200Mmsi code check Set-up ÊDeleteÊID ÊOffsetÊtime ˘MMSIÊcheckCheck the 9-digit Mmsi DSC self ID code MMSIÊcheck 123456789Receive messages SelÊitem ˘RCVÊcalls ÊDTRSÊset ÊSet-upSelÊMessage ˘Distress ÊOther ToÊclear ThisÊdata NoÊDSC/ENT YesÊH/LIntercom Operation Intercom operationIntercom TalkSET Mode Set mode programmingSET Mode Construction Push 16Set mode items Scan modeScan resume timer Weather alertBeep tone DSC watchInternal speaker LCD contrast Attenuation levelScrambler code Scrambler typeConnections and Maintenance Supplied accessoriesFuse replacement CleaningConnections Microphone HangerMounting the transceiver Using the supplied mounting bracketOverhead Mounting Mounting on Dashboard Using the optional mounting bracket Attach the clamps on either side of the IC-M502Optional unit installation Dimensions Troubleshooting Problem Possible Cause Solution† Low power only Receive only Channel ListSpecifications and Options SpeciﬁcationsGeneral TransmitterOptions Power Switch PWR pgs PTT Switch PTT pgsHM-127 REMOTE-CONTROL Microphone Push and hold to transmit release to receiveSQUELCH/MONITOR/LOCK Switch Sqlmonil VOLUME/DIMMER Switch VoldimTransmit Power Switch H/L 0SCAN Switch SCNTAGpgs0PRIORITY Channel Indicator HM-127 supplied accessories Installation Installation is finished when it is completedMm 3⁄32˝ 24 to 27 d mm 15⁄16 to 11⁄16˝ Mm 29⁄32˝ Gasket Channel A., International and Canadian channels Call channelPush CH/WX to select regular channel Condition before selecting the Push Weather channel groupRF attenuator function Push H/L to select the output power, if necessaryPush LO/DX to turn the RF Attenuator function on and OFF Lock functions Display backlightingMonitor function Activating the lock functionActivating the scrambler Programming scramble codesPush Y/Z to select the desired channel To turn the scrambler func Tion OFF, repeat step wSetting tag channels Dualwatch/Tri- watch operationTurn power OFF While pushing 169, turn power on Entering set modeBeep toneBEEP Intercom beep function Intercom operation Channel namesAvailable characters Template Cut here149 57⁄˝ R11 Mm 3⁄32˝Kamiminami, Hirano-ku, Osaka 547-0003 Japan