Motorola IC-T81E, IC-T81A Deviation, Hpf Off Lpf, Dtmf, Aus, Sea, Tone Call, Eur, Uk, Ctcss

TRANSMITTER ADJUSTMENT (Continued)

The following adjustment must be performed after “REFERENCE FREQUENCY ADJUSTMENT” in SECTION 5-2.

				MEASUREMENT					ADJUSTMENT
ADJUSTMENT		ADJUSTMENT CONDITION						VALUE	POINT
				UNIT	LOCATION				UNIT	ADJUST
FM	1	• Displayed frequency :		Top	Connect	an	FM	4.5 kHz	LOGIC	R327
DEVIATION		51.000 MHz	[EUR], [UK], [ITA]	panel	deviation	meter	to
(50 MHz)		52.000 MHz			the antenna con-
		[AUS], [SEA], [USA-1]			nector through		an
		• Connect the audio generator to			attenuator.
		the [MIC] connector and set as:
		95 mV/1.0 kHz.
		• Set the FM deviation meter as :
		HPF	: OFF
		LPF	: 20 kHz
		De-emphasis : OFF
		Detector	: (P–P)/2
		• Output power	: High
		• Transmitting
(144 MHz)	2	• Displayed frequency :								R325
		145.000 MHz [EUR], [UK]
		146.000 MHz
		[ITA], [AUS], [SEA], [USA-1]
		• Transmitting
(440 MHz)	3	• Displayed frequency :								R326
		445.000 MHz [USA-1]
		435.000 MHz [Other]
		• Transmitting
(1200 MHz)	4	• Displayed frequency :								R338
		1270.000 MHz
		• Transmitting
DTMF	1	• Displayed frequency :		Top	Connect	an	FM	3.5 kHz	LOGIC	R322
DEVIATION		445.000 MHz [USA-1] only		panel	deviation	meter	to
(AUS, SEA,		435.000 MHz [AUS], [SEA] only			the antenna con-
USA-1 only)		• Push [D] key while transmitting.			nector through		an
		• Transmitting			attenuator.
TONE CALL	1	• Displayed frequency :		Top	Connect	an	FM	3.5 kHz	LOGIC	R322
DEVIATION		435.000 MHz		panel	deviation	meter	to
(EUR, UK,		• Push [center of the multi-func-			the antenna con-
ITA only)		tion] key while transmitting.			nector through		an
		• Transmitting			attenuator.
CTCSS	1	• Displayed frequency :		Top	Connect	an	FM	0.5 – 1.0 kHz		Verify
DEVIATION		51.000 MHz [EUR], [UK], [ITA]		panel	deviation	meter	to
(50 MHz)		52.000 MHz			the antenna con-
		[AUS], [SEA], [USA-1]			nector through		an
		• Tone frequency : 88.5 Hz			attenuator.
		• Set an FM deviation meter as :
		LPF	: 3 kHz

•Apply no audio signal to the [MIC] jack.

•Transmitting

(144 MHz)	2	• Displayed frequency :
		145.000	MHz [EUR], [UK]
		146.000	MHz
		[ITA], [AUS], [SEA], [USA-1]
		• Transmitting
(440 MHz)	3	• Displayed frequency :
		445.000	MHz [USA-1]
		435.000	MHz [other]
		• Transmitting
(1200 MHz)	4	• Displayed frequency :
		1270.000 MHz
		• Transmitting

5 - 9