Icom IC-7300 Basic Manual

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Icom IC-7300 Basic Manual Manual pdf 35 page image

4RECEIVING AND TRANSMITTING1234567891011121314151617181920214-5NoiseBlankerThe Noise blanker eliminates pulse-type noise suchas the noise from car ignitions.The Noise blanker cannot be used in the FM mode.Push NB toturntheNoiseBlankerONorOFF.DisplayedNOTE:WhenusingtheNoiseBlanker,receivedsignalsmay be distorted if they are excessively strong or the noiseis other than a pulse type. In that case, turn the OFF NoiseBlanker,orshallowtheDEPTHontheNBmenu.See the description below for details.D AdjustingtheNBlevelandtimeTo deal with various type of noise, you can adjust theattenuationlevelandnoisewidthintheNBmenu.1. Hold down NB for 1 second.• TurnsONtheNoiseBlankerandopenstheNBmenu.2. Touch the adjusting item.(Example: DEPTH)3. Adjust the level.(Example: 8)RotatePushLEVEL (Default: 50%)AdjustthelevelwheretheNoiseBlankeractivatesbetween 0 and 100%.DEPTH (Default: 8)Adjust the noise attenuation level between 1 and 10.WIDTH (Default: 50)Adjust the blanking duration time between 1 and 100.IPPlusfunctionThe IP Plus function improves the IntermodulationDistortion (IMD) quality by exerting the direct samplingsystem performance.This function optimizes the Analog/Digital Converter(ADC) against the distortion when you receive astrong input signal. It also improves the Third-orderIntercept Point (IP3) while minimizing the reduction ofthe receive sensitivity.1. Push FUNCTION .• The FUNCTION screen is displayed.2. Touch [IP+].LTouch [IP+] to turn the IP Plus function ON or OFF.L Select ON to prioritize the IP quality, and select OFFto prioritize the receive sensitivity.3. To close the FUNCTION screen, push EXIT .• “IP+” is displayed when ON is selected.Displayed• SHARPThis selection is to emphasize the passband width ofthefilter.Thefilterhasanalmostidealshapefactor.Signalsoftheoutofpassbandareextremelyfilteredout and it gives you better audio quality.• SOFT Thefiltershouldersareroundlyformedasinanalogfilters.Thisdecreasesnoisecomponentsinthehighandlowfrequenciesofthefilterpassbandand increases the S/N of the target signal. Thesecharacteristics play an effective role in picking upvery weak signals in the 50 MHz band, for example.The shape factor is kept, and the sharpness of thebandpass is excellent.SelectingtheIFfiltershape(Continued)