Tektronix service manual O o o o, O t, 494A/494APServlceVol, Marker

494A/494APServlceVol. 1

LISTOF ILLUSTRATIONS

Figure					page	Figure					Page
		The494APSpectrumAnalyzer			xvi	4-23		Test oscilloscopedisplayof VERT
2-1		Dimensions.		....,....,..2-12				outputwith a full screendisplay
								on the SpectrumAnalyzer.			.......4-34
3-1		Locationof inputpowerselectorswitch				4-24 Equipmentsetupfor checking
								Option07 frequencyresponse
		andfine	.....,..,.........9-2					from0.01GHzto 1 GHz.		..........4-35
		fuse..._
4-1 Crt displayat initialpower-up					4-4	4-25 Equipmentsetupfor checking
								Option07 frequencyresponse
4-2		Typicaldisplayof catibrator						from5 MHzto 10 MHz.		............4€6
		signalin MaxSpanlDiv			4-5	4-26		Test equipmentsetupfor checking
4-3		Test equipmentsetuplor checking
								Option41 Span/Divaccuracy.			.. 4-37
44		centerfrequencyaccuracy.		.......	4-g	4-27		Test equipmentsetupfor checking
		Centerfrequencydrift with						Option42 frequencycharacteristics			4-38
4-5		the 1stLO tocked.	....................4-9
		Typicaldisplayfor measuring
		residualFM	.................. 4 - 10			5-1		Low voltagepower
4-6 Typicalmarkerdisplayfor								supplyadiustmentsi			5-4
		measuringSpan/Divaccuracy			4-11	5-2		Crt displayadjustmentand
4-7		Test equipmentsetupfor checking						test pointlocations.	..................5-5
		frequencySpan/Divand sweep				5-3		Adjustmentandtest point
		Time/Divaccuracy.	....................		4-13			locationson HighVoltagemodule			5-6
4-8		Typicaldisplayfor measuring				5-4	Test equiprnentsetupfor
		Time/Divaccuracy.	....................		4-14			adjustingthe DeflectionAmplifier			5-7
4-9		Typicaldisplayfor measuring				5-5		Test pointson the CRT
		bandwidthandshapefactor.			.....4-14			Readoutboard.			.....5-7
4-10		Typicaldisplayfor measuring				5-6		DeflectionAmptifiertest points
		noisesidebands		............4-15				andadjustments		............5-8
4-1'l Test equipments€...........tuptor
						5-7		Digitalstorageadjustment
		measuring						locations.		.........,....5-9
		0.01GHzto 21 GHz
		frequencyresponse.	..................		4-17	5-8		Test equipmentsetupfor
4-12 Test equipmentsetupfor								adjustingsweeptiming.		............5-9
		measuring10 kHzto l0 MHz				5-9	Sweepboardtimingadjustment
		frequencyresponse.	..................		4-19			andtestpointlocations			5-10
4-13		Testequipmentsetupfor checking				5-10 Frequencycontrolsystemtest
		dynamicrangeand accuracy,and						pointandadjustmentlocations			5-11
		preselector	................		4-19	5-11		P3035on theVideoProcessorboard.			.........5-12
		rejection.
4-14 RF attenuatortestequipm€ntsetup					4-21	5-12		Test equipmentsetupfor adjusting
4-15		RF attenuator						the LogAmplifier.	.....................5-12
		test equipmentsetup
4-16		lor 50-60 dB step.	.........		,.........4-24	5-13		Log andVideoAmplifiertest point
	.	Testequipment						andadjustmentlocations		...........	5-13
		setupfor checking
		intermodulationdistortion		....,,,....4-28		5-14		Test equipmentsetupfor adjusting
4-17		fntermodulationproducts		............	4-29			the Variabl€Resolutionmodule			,.......5-,14
4-1I		Test equipmentsetupfor checking				5-15	Adjustmentson the rear of the
		harmonicdistortion.	..............		,4...-90			VariableResolutionmodule.			.....5-15
4-19		Testequipmentsetupfor checking1 dB				5-16 100kHzover10 kHzfilterresponse					5-16
		inputcompressionpoint			4-31,...	5-17		Adjustmentson the tront of the
4-20		T€st equipmentsetupfor checking						VariableResolutionmodule.			.....5-18
		internaltriggercharacteristics			-4-92	5-18		Adjustmentson the 10 Hzl'00Hz
4-21 Externalvideoselectpinsand										5-18
								BandpassFilterAssembly
		MARKER			.. 4-30	5-19 10 kHz,100kHz,and
4-22		IVIDEOinput
		Testequipment						1 MHzfilterresponse....	,.............................5-1I
		setupfor checking
		externaltriggering				5-20		lF gaintestsetup,andadiustment
		and horizontal
		inputcharacteristics.	.................		4-33			andconnectorlocations.			..........5-21

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