Icom IC-7410 Service Manual - Page 19

SECTION 4. ADJUSTMENT PROCEDURE 4-1 PREPARATION ¤ REQUIRED EQUIPMENTS EQUIPMENT GRADE AND RANGE EQUIPMENT GRADE AND RANGE Short plug Modified 3.5 mm (1/8'') monoral plug (See the illust below) Audio generator (AG) Frequency range : 300-3000 Hz Output level : 1-500 mV RF voltmeter Measuring range : 20-200 mV (50 Ω terminated) Frequency range : 0.1-50 MHz AC Millivoltmeter Measuring range : 10 mV to 10 V RF power meter (50 Ω terminated) Measuring range Frequency range SWR : 5-120 W : 0.1-50 MHz : Less than 1.2 : 1 Digital multimeter Measuring range : 0-10 V (Voltage) 1-30 A (Current) Input impedance : More than 50 kΩ Frequency range : 0.1-100 MHz Frequency counter Frequency accuracy : ±1 ppm or better Input level : Less than 1 mW External speaker Input impedance : 8 Ω Capacity : More than 2 W Standard signal generator (SSG) Frequency range Output level : 0.1-100 MHz : 0.1 mV to 32 mV Spectrum Analyzer Frequency range : At least 90 MHz Bandwidth : 100 kHz (-127 to -17 dBm) Dummy Loads Impedance : 50 Ω and 100 Ω/120 W CAUTION!: SAVE the originally programmed contents (Memory channel contents, set mode settings, etc.), before starting adjustment. When all adjustments are completed, these contents in the transceiver may be cleared. ¤ GENERAL CONNECTION AND UNIT LOCATION AC millvolt Audio meter generator [MIC] [MIC] AC MILLIVOLT METER (10 mV to 10 V) - EXT. SPEAKER (2 W/8 Ω) - MAIN UNIT PTT PLL RF-A UNIT UNIT • Short plug (For entering the adjustment mode) CTRL UNIT 3.5 mm (1/8'') monoral plug (Short) + [EXT-SP] [REMOTE] [DC 13.8V] [ANT1] RF POWER METER (120 W/50 Ω) + DC power supply (13.8 V/30 A) −⊕ 3.5(d) mm monoral plug AMMETER (0.1-30 A) Fuses 30 A Supplied DC cable ⊕ Red − Black − ⊕Red − Black DUMMY LOAD (50 Ω/120 W) FREQUENCY COUNTER (0.1-1 GHz) ATTENUATOR (40/50 dB/100 W) STANDARD SIGNAL GENERATOR (0.1-60 MHz) NEVER TRANSMIT while an SG is connected. 4 - 1