b.
Connect preamp end of delay line to Signal Insertion
Unit (067-0676-00).
c.
C15 V and —8 V to Signal Insertion Unit.
d.
Connect 5 divisions, + polarity, from Fast-Rise High-
Amplitude Pulse Generator (Type 109) to Signal Insertion
Unit via a GR cable, X 5 GR attenuator. Signal Pickoff Unit
(Type CT-3), and GR-to-BNC adapter.
e.
Connect 10% output of Signal Pickoff unit to A
External Trigger input via a terminated cable.
f.
ADJU ST—C450, R450, C466, R466, C470, and R470
for best flat-top waveform.
24. Adjust High-Frequency Compensation
a. V O L T S /D IV to 5 m V,
AC-GND-DC to DC.
b.
Adjust for 5 division display of 10 kHz signal from
fast-rise output of Square-Wave Generator (Type 106) to
CH 1 input.
c.
A D JU ST—R 139 and R475 for no more than 4%
aberrations.
d. Adjust Square-Wave Generator for 5 divisions of
100 kHz signal.
e. A D JU ST—C471 and C477 for no more than 4%
aberrations.
f . Move the test signal to CH 2,
V O L T S /D IV to 5 m V,
AC-GND-DC to DC.
g.
Adjust Square-Wave Generator for 5 divisions of
10 kHz signal.
h,
A D JU ST—R239, R475, C471, and C477 for no more
than 4% aberrations.
i. Disconnect Square-Wave Generator.
Calibration—475
j.
Connect output of Fast-Rise High-Amplitude Pulse
Generator (Type 109) to the CH 1 input.
k.
Adjust for 5 divisions of deflection.
I.
A D JU ST—C l75, R175, C133, R133, Cl 12, and R 112
for no more than 4% aberrations.
m. Move test signal to CH 2.
n.
A D JU ST—C275, R275, C233, R233, C212, and R212
for no more than 4% aberrations.
25. Adjust V O L T S /D IV Compensation
a.
Adjust CH 1 V O L T S /D IV compensation for no more
than 2% aberrations. Use a 20 pF normalizer and a 5
division signal.
5 mV
CIO or C50
2 mV
Check
10 m V
C36, C37
20 m V
C34, C35
50 m V
C32, C33
0.1 V
Check
0.2 V
Check
0.5 V
C30, C31
b.
Repeat for CH 2.
26. Check Vertical Amplifier Bandwidth
a.
Use
High-Frequency
Constant-Amplitude
Signal
Generator (067-0532-01): 5 division display of 3 MHz
reference signal.
b.
A t 5 m V setting of both V O L T S /D IV switches, check
frequency is at least 200 MHz when display is reduced to
3.5 divisions.
27. Check Cascaded Bandwidth
a.
CH 2 V E R T S IG N A L O U T to CH 1 input through a
terminated cable.
b. Check bandwidth is at least 50 MHz.
28. Check Vertical Channel Isolation
A t least 100:1 at 50 MHz.
®
5-17
Summary of Contents for 475
Page 6: ...475 475 Oscilloscope ...
Page 20: ......
Page 46: ......
Page 151: ...A B C D E F G Fig 7 4 P 0 A4 Vertical Mode Switch circuit board ...
Page 152: ...n m m m 1 t siumm c ii im ...
Page 154: ...Diagrams 475 A B C D E F G ...
Page 155: ...GRID LOCATOR Fig 7 8 P O A3 Vertical Preamp circuit board ...
Page 157: ...Diagrams 475 ...
Page 158: ...GRID LOCATOR 2 3 4 5 6 7 8 9 1 10 11 1 12 Fig 7 10 P 0 A3 Vertical Preamp circuit board ...
Page 160: ...Diagrams 475 GRID LOCATOR Fig 7 11 A5 Vertical Output circuit board ...
Page 163: ...Diagrams 475 GRID LOCATOR Fig 7 12 P O A8 Trigger Generator And Sweep Logic circuit board ...
Page 167: ... 415 OSCILLOSCOPE B T R IG G E R G E N E R A T O R g B TR IG G E R GEN ER A TO R ...
Page 168: ...Diagrams 475 GRID LOCATOR ...
Page 172: ...SWEEP G E N ER A TO R S ...
Page 175: ...TIM IN G HORIZONTAL DISPLAY SWITCHING ...
Page 177: ...A 011 HORIZONTAL AMPLIFIER 8 l j k J Ll J Ol Z o N C O X U 1 C L O o v O o _J V v P O in r ...
Page 179: ... 476 OSCILLOSCOPE ...
Page 180: ...POWER SUPPLY ...
Page 182: ...CRT CIRCUIT ...
Page 185: ...C A L IB R A T O R A N D F A N C I R C U I T 4 C A LIB R A TO R FAN MOTOR C IR C U IT ...
Page 189: ......
Page 190: ...4 T 475 OSCILLOSCOPE FIG 1 FRO NT PANEL ...
Page 191: ...475 OSCILLOSCOPE FIG 2 MAIN FRAME ...
Page 199: ......
Page 200: ...FIG 3 RIGHT SIDE l 475 OSCILLOSCOPE ...
Page 201: ...V S X O t l B O T T OVJ 8 8 ...
Page 209: ......
Page 210: ...5 ...
Page 211: ...4 4 75 O S C ILLO S C O P E FIG 5 CAB IN ET ...
Page 215: ......
Page 237: ......
Page 241: ... 1 I R I II9A po S IT I o n f i n e I R l 130 PAGE 4 OF 5 R 1234 Ml 9 91 9 473 ...