Icom IC-T90A manual Displayed frequency Connect a DC volt Maximum voltage

ADJUSTMENT MODE ADJUSTMENTS (Continued)

The following adjustment must be performed at “ADJUSTMENT MODE”.

				MEASUREMENT				ADJUSTMENT
ADJUSTMENT		ADJUSTMENT CONDITION					VALUE	POINT
				UNIT	LOCATION			UNIT	ADJUST
RF	11	• Displayed frequency :		AF	Connect a DC volt-		Maximum voltage	Top	[DIAL]
TRACKING		(TM ch.)	430.100 MHz		meter or	oscillo		panel
		• Connect the SSG to the antenna			scope to the IC151,
		connector and set as:			pin 12 (“SD” line).
		Level	: 0.5 µV*
			(–113 dBm)
		Modulation : 1 kHz
		Deviation	: ± 3.5 kHz
		• Receiving
	12	• Displayed frequency :					Maximum voltage		[DIAL]
		(TH ch.)	499.100 MHz
		• Receiving
	13	• Displayed frequency :					Maximum voltage		[DIAL]
		(TL ch.)	450.100 MHz
		• Receiving
	14	• Displayed frequency :					Maximum voltage		[DIAL]
		(TH ch.)	569.100 MHz
		• Receiving
	15	• Displayed frequency :					Maximum voltage		[DIAL]
		(TL ch.)	630.100 MHz
		• Set the SSG as:
		Level	: 1 µV*
			(–107 dBm)
		• Receiving
	16	• Displayed frequency :					Maximum voltage		[DIAL]
		(TH ch.)	900.100 MHz
		• Set the SSG as:
		Level	: 3.2 µV*
			(–97 dBm)
		• Receiving
		CONVENIENT: The “RF TRACKING” can be adjusted automatically.
			q: Set the Displayed frequency (TL ch.)			30.100 MHz
			w: Connect the SSG to the antenna connector and set as:
			Level	: 0.5 µV* (–113 dBm)
			Modulation	: 1 kHz
			Deviation	: ± 3.5 kHz
			e: Receiving
			r: Push the [BAND] key to start tuning, automatically.
			t: Repeat q-rto perform additional frequencies.

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

When adjusting by automatically, must change the SSG’s level which is depened on adjustment frequencies as shown above.

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