Motorola IC-T81A, IC-T81E service manual Meter, Ssg, Top Push and hold MHz band, 101 dBm, 113 dBm

RECEIVER ADJUSTMENT (Continued)

The following adjustment must be performed on the normal mode after “SENSITIVITY ADJUSTMENT” in SECTION 5-3.

ADJUSTMENT		ADJUSTMENT CONDITION		MEASUREMENT		VALUE	ADJUSTMENT
				UNIT	LOCATION
S-METER	1	• Displayed frequency :		Top			Push and hold
(50 MHz band)		51.000 MHz	[EUR], [UK], [ITA]	panel			the [SQL] key
		52.000 MHz
		[AUS], [SEA], [USA-1]
		• Connect the SSG to the antenna
		connector and set as:
		Level	: 1 µV*
			(– 107 dBm)
		Modulation	: 1 kHz
		Deviation	: ± 3.5 kHz

•Connect a terminator to the [SP] jack.

•Receiving

2	• Set an SSG output level for the			0.56 µV – 1.8 µV	Verify
	S-meter to S3.			(-112dBm – -102 dBm)
	• Receiving
3	• Increase an SSG output level.		Front S-meter	Full scale	Verify
	• Receiving		panel
(WFM band) 4	• Displayed frequency :		Top		Push and hold
	92.000	MHz [SEA], [USA-1]	panel		the [SQL] key
	98.000	MHz
	[EUR], [UK],[ITA], [AUS]

•Connect the SSG to the antenna connector and set as:

Level	: 2 µV*
	(– 101 dBm)
Modulation	: 1 kHz
Deviation	: ± 52.5 kHz

•Connect a terminator to the [SP] jack.

•Receiving

5	• Increase an SSG output level.		Front S-meter	Full scale	Verify
	• Receiving		panel
(144 MHz band) 6	• Displayed frequency :		Top		Push and hold
	145.000	MHz [EUR], [UK]	panel		the [SQL] key
	146.000	MHz
	[ITA], [AUS], [SEA], [USA-1]

•Connect the SSG to the antenna connector and set as:

Level	: 0.5 µV*
	(– 113 dBm)
Modulation	: 1 kHz
Deviation	: ± 3.5 kHz

•Connect a terminator to the [SP] jack.

•Receiving

7	• Set an SSG output level for the	SSG	Output level	0.28 µV – 0.89 µV	Verify
	S-meter to S3.			(-118dBm – -108 dBm)
	• Receiving
8	• Increase an SSG output level.	Front	S-meter	Full scale	Verify
	• Receiving	panel

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

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