Calibration—475
g. Set the V E R T MODE switch to CH 1.
h. CHECK—Repeat step 50-b.
i. Set the A SOURCE switch to NORM.
j. CHECK—Repeat step 50-b.
k. Set the A SOURCE switch to CH 2.
I. CHECK—Repeat step 50-f.
m. Disconnect the test setup.
51. Check HF RE J Triggering
a. Set the H O R IZ D ISPLA Y switch to A f the T IM E /D IV
switches to 2 /is, the T R IG MODE switch to A U TO , both
COUPLING switches to HF REJ, and both SOURCE
switches to NORM.
b. Connect
the output of the
Medium-Frequency
Constant-Amplitude Signal Generator (Type 191) to the
CH 1 input via a 50 12 5 ns GR cable, a 50 12 Signal Pickoff
Unit (Type CT-3), a GR-to-BNC adapter, and an 18-inch
50 12 BNC cable.
c. Connect the 10% output of the Signal Pickoff Unit to
the A External Trigger input via an 18-inch 50 12 BNC cable
and a 50 12 BNC termination.
d. Adjust the Medium-Frequency signal generator for a
0.5 volt, 50 kilohertz, output signal.
e. Adjust the CH 1 V O L T S /D IV switch for a 0.3 division
display.
f. C HECK—That a stable display can be obtained on
both slopes of the displayed waveform in all positions of
the A COUPLING switch, by adjusting the A LEVEL
control.
g. Increase the output of the Medium-Frequency signal
generator to 1 megahertz.
h. CHECK—That a stable display cannot be obtained in
the HF REJ position of the A COUPLING switch.
i. Set the A SOURCE switch to E XT.
j. C HECK—That a stable display cannot be obtained in
the HF REJ position of the A COUPLING switch.
k. Reduce
the
Medium-Frequency signal generator
output frequency to 50 kilohertz.
I. CHECK —That a stable display can be obtained on
both slopes of the displayed waveform, in all positions of
the A COUPLING switch, by adjusting the A LEV E L
control.
m. Move the external Trigger signal to the B External
Trigger input.
n. Set the H O R IZ DISPLAY switch to B D L Y 'D .
o. CHECK —That a stable display can be obtained on
both slopes of the displayed waveform, in all positions of
the
B COUPLING switch, by adjusting the LEV E L
controls.
p. Increase the output of the Medium-Frequency signal
generator to 1 megahertz.
q. CHECK —That a stable display cannot be obtained in
the HF REJ position of the B COUPLING switch.
r. Set the B SOURCE switch to E XT.
s. CHECK —That a stable display cannot be obtained in
the HF REJ position of the B COUPLING switch.
t. Reduce the Medium-Frequency signal generator out
put frequency to 50 kilohertz.
u. CHECK —That a stable display can be obtained on
both slopes of the displayed waveform, in all positions of
the B COUPLING switch, by adjusting the LEV E L
controls.
v. Disconnect the test setup.
5-45
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 ...
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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 ...