Icom IC-F3GT, IC-F3GS service manual BPF T1

SOFTWARE ADJUSTMENT – continued

Select an operation using [↑] / [↓] keys, then set specified value using [←] / [→] keys on the connected computer keyboard.

ADJUSTMENT	ADJUSTMENT CONDITION			MEASUREMENT	VALUE
			UNIT	LOCATION
RX	1 • Operating frequency:		Top	Connect a SINAD meter with an	Minimum distortion
SENSITIVITY	400.000	MHz A	panel	8Ω load to the [SP] jack.	level
[BPF T1] –	440.000	MHz B
[BPF T4]	470.000	MHz C
	490.000	MHz D, E

•Connect a standard signal generator to the antenna connector and set as:

		Frequency	:	400.000 MHz A
				440.000 MHz B
				470.000 MHz C
				490.000 MHz D, E
		Level	: 10 µV* (–87 dBm)
		Modulation	: 1 kHz
		Deviation	: ±3.5 kHz*1 „
				±2.8 kHz ˜
				±1.75 kHz*2 ˆ
		• Receiving
		CONVENIENT: The BPF T1–BPF T4 can be adjusted automatically.
				-1: Set the cursol to “BPF ALL” on the adjustment program and then push [ENTER]
				key.
				-2: The connected PC tunes BPF T1–BPF T4 to peak levels.
				or
				-1: Set the cursol to one of BPF T1, T2, T3, or T4 as desired.
				-2: Push [ENTER] key to start tuning.
				-3: Repeat -1 and	-2 to perform additional BPF tuning.
SQUELCH	1	• Operating frequency:			Top	Connect a SINAD meter with an	12 dB SINAD
LEVEL			400.000 MHz A		panel	8Ω load to the [SP] jack.
[SQL]			440.000 MHz B
			470.000 MHz C
			490.000 MHz D, E
		• Connect a standard signal generator to
		the antenna connector and set as:
		Frequency	:	400.000 MHz A
				440.000 MHz B
				470.000 MHz C
				490.000 MHz D, E
		Level	: 0.2 µV* (–121 dBm)
		Modulation	: 1 kHz
		Deviation	: ±3.5 kHz*1 „
				±2.8 kHz ˜
				±1.75 kHz*2 ˆ
		• Receiving
	2	• Receiving					At the point where
							the audio signals
							just appears.

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

*1, *2W/N-type must be set the standard signal generator deviation level both *1 and *2 on the RX SENSITIVITY AND SQUELCH LEVEL ADJUSTMENTS.

A: 400–430 MHz	B: 440–470 MHz	C: 470–500 MHz	D: 490–512 MHz	E: 490–520 MHz
ˆ: N-type	„: W-type	˜: M-type

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