Icom IC-910H service manual Deviation, Hpf Off, Lpf

SOFTWARE ADJUSTMENT (continued)

ADJUSTMENT	ADJUSTMENT CONDITION	DISPLAY	OPERATION
TX POWER/ 7	• Connect an RF power meter to [UHF ANT]	CW	Push [RIT] key to strat transmitting.
METER	connector.
(for 430 M)
8		CW	Tune the [MAIN DIAL] to 75 W (High
			power). Push [RIT] key to store the
			adjustment value into memory, and
			to step next.
9		CW	Tune the [MAIN DIAL] to 37.5 W
			(Middle power). Push [RIT] key to
			store the adjustment value into
			memory, and to step next.
10		CW	Verify the output power (Low) is 1–5
			W, then push [RIT] key to step next.

ADJUSTMENT 1		• Enter software	adjustment mode (Refer		FM	Push [RIT] key to strat transmitting.
ITEM (8)		page 5-12).
DEVIATION		• Push [8] key to enter the deviation adjust-
		ment.
		• MIC gain	: Center
		• Connect an FM deviation meter to [VHF
2					FM	Tune the [MAIN DIAL] to ±4.5 kHz
		ANT] connector through an attenuator and
						FM deviation. Push [RIT] key to
		set as:
						store the adjustment value into
		HPF	: OFF
						memory, and to step next.
		LPF	: 20 kHz
		De-emphasis	: OFF
3		Detector	: (P–P)/2		FMN	Tune the [MAIN DIAL] to ±2.25 kHz
		• Connect an audio generator to [MIC] con-				FM deviation. Push [RIT] key to
		nector and set as:				store the adjustment value into
		Frequency	: 1.0 kHz			memory, and to step next.
		Level	: 20 mVrms
	4 • Apply no audio signals to [MIC] connector.				FM	Tune the [MAIN DIAL] to ±0.6 kHz
						CTCSS tone deviation. Push [RIT]
				T		key to store the adjustment value
						into memory, and to step next.
5					FM	Tune the [MAIN DIAL] to ±0.6 kHz
						europe tone deviation. Push [RIT]
				T		key to store the adjustment value
						into memory.
						Then turn power OFF and ON to
						return the normal operation mode.

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