Icom IC-910H service manual Noise SQL

SOFTWARE ADJUSTMENT (continued)

ADJUSTMENT		ADJUSTMENT CONDITION			DISPLAY		OPERATION
S-METER	10	• Set an SSG as	:			Push [RIT] key to store the “S0” level
(SUB BAND)		Frequency	: 146.0200 MHz			into memory, and to step next.
		Level	: OFF	SUB	FM
		• Receiving
	11	• Set an SSG as	:			Push [RIT] key to store the “S9” level
		Frequency	: 146.0200 MHz			into memory, and to step next.
		Level	: 3.2 µV* (–97 dBm)	SUB	FM
		Modulation	: OFF
		• Receiving
	12	• Set an SSG as	:			Push [RIT] key to store the “S9+60”
		Frequency	: 146.0200 MHz			level into memory. Then the display
		Level	: 32 µV* (–77 dBm)	SUB	FM	change	to the noise SQL adjust-
		• Receiving				ment.
ADJUSTMENT	1	• Connect an SSG to [VHF ANT] connector				Push [RIT] key to store the noise
				FM
ITEM (3)		and set as	:			squelch thresh-hold level for FM
NOISE SQL		Frequency	: 146.0200 MHz			mode into memory, and to step next.
(MAIN BAND)		Level	: 0.063 µV* (–131 dBm)
		Modulation	: OFF

•Receiving

	2 • Set an SSG as	:		FM		Push [RIT] key to store the noise
	Frequency	: 146.0200 MHz				squelch tight level for FM mode into
	Level	: 0.2 µV* (–121 dBm)				memory, and to step next.
	• Receiving
	3 • Set an SSG as	:		FMN		Push [RIT] key to store the noise
	Frequency	: 146.0200 MHz				squelch thresh-hold level for FM nar-
	Level	: 0.063 µV* (–131 dBm)				row mode into memory, and to step
	• Receiving					next.
	4 • Set an SSG as	:		FMN		Push [RIT] key to store the noise
	Frequency	: 146.0200 MHz				squelch tight level for FM narrow
	Level	: 0.2 µV* (–121 dBm)				mode into memory, and to step next.
	• Receiving
(SUB BAND) 5 • Set an SSG as		:				Push [RIT] key to store the noise
	Frequency	: 146.0200 MHz				squelch thresh level for FM mode
	Level	:	0.063 µV* (–131 dBm)	SUB	FM	into memory, and to step next.
	• Receiving
	6 • Set an SSG as	:				Push [RIT] key to store the noise
	Frequency	: 146.0200 MHz				squelch tight level for FM mode into
	Level	: 0.2 µV* (–121 dBm)		SUB	FM	memory, and to step next.
	• Receiving
	7 • Set an SSG as	:				Push [RIT] key to store the noise
	Frequency	: 146.0200 MHz				squelch threshhold level for FM nar-
	Level	:	0.063 µV* (–131 dBm)	SUB	FMN	row mode into memory, and to step
	• Receiving					next.
	8 • Set an SSG as	:				Push [RIT] key to store the noise
	Frequency	: 146.0200 MHz				squelch tight level for FM narrow
	Level	: 0.2 µV* (–121 dBm)		SUB	FMN	mode into memory. Then the display
	• Receiving					change to the AFC center adjust-
						ment.

*This output level of a standard signal generator (SSG) is indicated as SSG’s open circuit.

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