Tektronix 494AP service manual Adiustment Procedure- 4g4Al4g4Ap ServiceVol

o
o			Adiustment Procedure- 4g4Al4g4Ap
o					ServiceVol. 1
o
o
o
o		P.rtad (Rear Panel)		@
		drowing Jl(X
o		Connrcror	Acccrorv	a
o				@ JgESI
o						(
o		T.d OGlnoacopc
o				5		Jumpcr
o					1	Pin I to
					1 {
						5.
o
o	o
o
o	O o
o	o o o
o				Spectrum AnalyzerUnder Test
o		BllC T-Conneclor
o
o
o
o
o		Figure 5-4. Test equlpment setup for adiusting the D€flection Amplifier.
o
o	i. Disconnect
		the voltmeter,	p. AdjustC4061for the bestresponse.
	changethe test oscilloscope set TIME/DIVto AUTO,
o	the signatat	^to Ext Trigger,and apply
		Tp10g8on the Crt neadojt-boardfiiuri
o	5-5)to the test oscilloscopeExt Triggerinput. Set the
	test oscilloscopeTimeiDivto 2 ;rs.
o	j. set the spectrum Analyzercontrols for a trig-
o		-
	gered sweep,then switch the sweep off by aetivating
	SINGLESWEEP,andensurenetO OUTis on.
o	k. Monitorth€ collectorsof e1O31and e1024, on
o	the DeflectionAmplifier board, with the test oscillo-
	See Figure5-6 for the locations
o	01024.	of e1031 and
O	l. Adjust	C5021tor the bestfrequencyresponse(no
	overshoot
o	or rolloff)as viewedon the tesiosciiloscope,
	m. Monitorthe collectors
o		of e1043 and e1049,on
	the DeflectionAmplifierboard,withtest oscilloscope.
o	n. AdjustC4OS7(Figure5_6)for the best response.
o
	o. Monitorthe collectors
		of e1072 and e207g, on
	the DeftectionAmplifierboard,withtest o."illo."op".
o			Figure 5-5.	Test points on the CRT Readout board.
o
o						5-7
o
o