Nikon CM200 service manual Sinad

RF Test Mode					3-5
		Table 3-6Receiver Performance Checks
	Test Name	Communications Analyzer	Radio	Test Set	Comment
	Reference	Mode: PWR MON	TEST MODE,	PTT to	Frequency error to
	Frequency	4th channel test frequency*	Test Channel 4	continuous	be: ±186 Hz VHF1
		Monitor: Frequency error	carrier squelch	(during the	±200 Hz VHF2
		Input at RF In/Out	output at	performance	±568 Hz UHF2
			antenna	check)	±600 Hz UHF3
	Rated Audio	Mode: GEN	TEST MODE	PTT to OFF	Set volume control
		Output level: 1.0mV RF	Test Channel 4	(center),	to 8.10Vrms
		4th channel test frequency*	carrier squelch	meter selector
		Mod: 1kHz tone at		to Audio PA
		3kHz deviation
		Monitor: DVM: AC Volts
	Distortion	As above, except to distortion	As above	As above	Distortion <5.0%
	Sensitivity	As above, except SINAD,	As above	PTT to OFF	RF input to be
	(SINAD)	lower the RF level for 12dB		(center)	<0.3∝V
		SINAD.
	Noise	RF level set to 1mV RF	As above	PTT to OFF	Set volume control
	Squelch			(center),	to 3.16Vrms
	Threshold			meter
	(only radios			selection to
	with			Audio PA,
	conventiona			spkr/ load to
	l system			speaker
	need to be
	tested)
		As above, except change	out of TEST	As above	Unsquelch to occur
		frequency to a conventional	MODE; select a		at <0.25∝V.
		system. Raise RF level from	conventional		Preferred SINAD =
		zero until radio unsquelches.	system		9-10dB

* See Tables 3-4.