Tektronix 494A/494APServlceVot, Simplifieddigital-to-analog Converter, DACvariancegraph

494A/494APServlceVot. 1

LISTOF ILLUSTRATIONS(Cont.)

o

I

o a

I

Io

Figure		Page
7-12	Selectionof disptayposition
7-13	on the log scale.	.....7-94
	Functional
	diagramshowingthe
	sp€ctrum analyzerand 1405TV
7-14	SidebandAdaptersystem.	........7€6
	Simplifieddiagramof
7-15	videofilter.	.............Z-39
	Verticalcontrol lC
	bfockdiagram	.............241
7-16 Horizontalcontrollc
	bfockdiagram	.............145
7-17 Blockdiagramof
	crt readout.	.............7-52
7-18 Characteron/offtiming		...............7-53
7-1I	Characterscan..,	...............7-54
7-20	Charactergenerator
	blockdiagram	............7-5S
7-21 Charactertimingdiagram.		.........7-56
7-22	Frequencydot markersimplified
	diagramwithtimingwaveforms	7-Sg

Figure			Page
7-23 Simplifieddigital-to-analog
7-24	converter.	....-	........7-66
	Simplifiedspandecadeattanuator		7-67
7-25	DACvariancegraph.	................7-73
7-26	Simpfffiedtunevoltageconverter		7-74
7-27	Simplifiedschematicof harmonicmixer.		......7-79
7-28	Blockdiagramof a basicsynthesizer		7-80
7-29	Basicblockdiagramof a -rNsynthesizer
	prescaler		7-80
7€0	with a variablemodulus
	Systemmemorymap		....7-89
7-31	l/O addressspac€.	...................7-90
7-32	PIA andTimeraddressmap.		....7,91
7€3 Optionsswitchbank
7-34	on the Memoryboard.	..............7-95
	Primaryregulator
7-35	input/outputwaveforms.	...........7-104
	Timingwaveformsfor soft-startcircuit		7-105
8-1	Int€rnationalPowercordoptions		8-1

a o

I

I

I

o o

O t

o

o o

I

a

I

o o

I

o o o o

)

o o a o o

Ia

o

I

o o

xil

o o

t