KXBC3-Installation-Operation-Rev-B1操作说明书手册

Elecraft®KX3KXBC3 NiMH Battery Charger andReal Time ClockInstallation InstructionsRevision B1,June 9,2015Copyright 2015,Elecraft,Inc.,All Rights ReservedIntroductionWhen the KX3 is equipped with an internal battery using eight AA size NiMH cells,the KXBC3 allowscharging the battery from an external 13.8 VDC supply without removing it from the KX3.The KXBC3 alsoprovides a Real Time Clock and 24 hour alarm that will automatically power up the KX3.The internal battery powers the KX3 whenever the external power source is removed,or any time the externalpower supply voltage falls below the internal battery voltage.Although any type of AA size cells may be usedfor the KX3 internal battery,only NiMH cells rated at 1900 mAH or greater may be charged with the KXBC3.Installation involves opening the KX3 as if you were changing batteries and then using a screwdriver to removethe KX3 battery retainer and replace it with the KXBC3 module.CAUTIONThe KXBC3 module and many components inside your KX3 may be damaged byElectrostatic Discharge(ESD)simply by touching them or a circuit board containingthem unless you take specific steps to prevent such damage.See PreventingElectrostatic Discharge Damage on page 5 before opening the package containing theKXBC3 module or working inside your KX3.SpecificationsBattery Compatibility:NiMH type batteries with a capacity of 1900 mAH or higher.Read Charging Batteries onpg 3 for important safety information before charging batteries!Charging Current:200 mACharging Temperature::O°Cto40°C.External Power Supply:13.8 V(minimum)to 15 VDC at 500 mA for receive only when charging;approx.3 amperes when transmitting and chargingReal Time Clock:Time of day (hh:mm:ss)with 24 hour alarm that will wake up the KX3 ifpower is off.Clock Holdup Time:5 minutes.Allows changing the internal batteries without losing time oralarm setting The clock continues to run during this time.