Tektronix 3A74 Instruction Manual page 89

+125V
(DEC) -
5V/DIV. p
csso T R580 ' 7
. P
+014 = SYNC. PULSE
+125V
cS77 A pssai
. oo . cses
i / I
1 / ond i SWSBO a
| , od H CHORAALT. | ———>
be 560 / 1 Le s70 + 0.3
2Vy
2 if
~(2.2v 3
T
c.) | ' (DEC.) | R587 cSa7
| OpO-#NORM.
f
2K 727°
| {lo {OFF
'
Ls
| | ! ! 7 . h
[om INV. | ez" SV/DIV cronies =
EC) ore
IR iF 1R 5w430 iR bn
_—— Lijtoe ——d joke :
) + 300V LU SEC/DIV
;
(CHANNEL
tcses
Voseo
CHOP.
reece | '0° R593
z :
SY/DIV. eee ov
L588
=
rae
FERRITE R566 BLOCKING C59S ot
ee OSCILLATOR 1 T | ojJTS593 OB jLSEC/DN.
= +017 =
-- = CHOP. BLANKING [7 SYNC, PULSE
sees s - ar 4
vraag 88 OS 90 PULSE +297 OUT
W/DIV elf
oc
REGENERATOR
- i 2 V533B8
7 "12 w6EDT7E
3
R572
B.BTK fP , L595
("A
3S pas > QS75 R597
oT [sr [620] 24 BLANKING
2 R575 ~72.2 Regs PULSE
3 =
rAA-4 D595
;
Se
for coo] =
f=} oO} C59 ot
PT SR5% 1 ; CHOP.
1 $27 I 1 :
R573 = cs94_[o595 , 4 bt
10K = [8] 20V/DW, he; f cae
-12.2V
t f
j
fj CDEC) tat Al IN XS \-0.7
142 SEC/DIV.
RING
y—-—— 18 COUNTER
aa ae SYNC.
GATING PULSE
TO CHANNEL 4
2 D567 DIODE. SWITCHES %* METER LOADING
-12.2V
"134 (DEC.) GATING PULSE ; :
TO CHANNEL 3 a
DIODE SWITCHES 2 SEC/DIV.
pse6a ~
WAVEFORMS € VOLTAGE READINGS
WERE OBTAINED UNDER FOLLOWING CONDITIONS:
DEC GATING PULSE
TO CHANNEL 2 en
DIODE SWITCHES VOLTS/DIV.(ALL CHAN)... 0.02205 02
POSITION (ALL CHAN)... . ++... CENTERED
TRIGGER 0. e cece e eee EITHER
VOLTAGES :
A Nutrni MODE (CHAN, 2,3,64).......0..0 0000... OFF
ODE SWITCHES CHOPWALT. 200 ccc cece e ees CHOP
" 'NAVEFORMS :
28 78 MODE(ALL CHAN)... 220-2 ee eee ee NORM,
o 7-SK SEE PARTS LIST FOR CHOP.-ALT 2... eee ee eee SEE WAVEFORMS
SEMICONDUCTOR TYPES
t (SEE IMPORTANT NOTE ON 4 CHAN. SWITCHED AMPDIAG)
c578
Ko) -
2 T
100V
MRH
Tv SoS
CHANNEL SWITCHING CIRCUIT