Icom IC-A110EURO Service Manual Addendum

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Icom IC-A110EURO Service Manual Addendum Manual pdf 53 page image

4 - 54-4 RECEIVER ADJUSTMENT“SQUELCH ADJUSTMENT” must be performed at “SQUELCH ADJUSTMENT MODE”.RXSENSITIVITYSQUELCHADJUSTMENTADJUSTMENT ADJUSTMENT CONDITION MEASUREMENT VALUE POINTUNIT LOCATION UNIT ADJUST12123• Operating frequency :118.000 MHz• Pre-set L9, L10, L11, L49 on theMAIN unit to max. CCW.• Connect an SSG to the antennaconnector and set an SSG as :Level : 1.0 μV *(–107 dBm)Modulation : ± 1 kHzMod. depth : 30 %• Receiving• Operating frequency :136.975 MHz• Receiving• Enter the “Squelch adjustmentmode”.1): Program 118.000 MHz intomemory channel.2): Turn power OFF.3): While pushing [SQL], [TS],[SCAN], turn power ON.• Connect an SSG to the antennaconnector and set an SSG as :Level :[A110] 0.18 μV *(–122 dBm)[A110EURO] 0.25 μV *(–119 dBm)Modulation : OFF• Receiving• Set an SSG as :Level : 5.6 μV *(–92 dBm)Modulation : OFFRearpanelFrontpanelConnect an AC milli-voltmeter and dis-tortion meter with 8Ω load to the exter-nal [SP] jack.DisplayMaximum AF outputlevelMaximum AF outputlevelMAIN*This output level of the standard signal generator (SSG) is indicated as SSG’s open circuit.L9, L10,L11, L49R59• Verify the display indicates “sqADJ02”.NOTE: If the display shows other, turn[MAIN DIAL] to select“sqADJ02”.• Push the [SCAN] key to set the thresh-old level.• Verify the display indicates “sqADJ25”.• Push the [SCAN] key to set the tightlevel.• Turn power OFF to cancell the “Squelch adjustment mode”.NOTE: Until turn power OFF, “Squelch adjustment mode” is not cancelled, and once pushing the [SCAN] key,display indicates “sqADJ02” (threshold level adjustment) or “sqADJ25” (tight level adjustment) repeat-edly