Calibration—475
b. Connect the CH 2 V E R T S IG N A L O U T (on the rear
panel) to the CH 1 input via a 42-inch 50 £2 BNC cable and
a 50 12 BNC termination.
c. Connect
the
output of the Medium-Frequency
Constant-Amplitude Signal Generator (Type 191) to the
CH 2 input via a GR-to-BNC adapter, 42-inch 50 12 BNC
cable, X I 0 BNC attenuator, and a 50 12 BNC termination.
d. Adjust the Medium-Frequency signal generator for a
five division display of a 50 kHz signal.
e.
Without changing the output amplitude of the
Medium-Frequency signal generator, increase the output
frequency until the display is reduced to 3.5 divisions.
f.
CHECK—Output frequency of the Medium-Frequency
signal generator must be at least 50 megahertz.
g.
Disconnect the test setup from the CH 2 V E R T
S IG N A L O U T to the CH 1 input connector.
36. Check Vertical Channel Isolation
a. Set the V E R T MODE switch to CH 2, the CH 2
V O L T S /D IV switch to 0.2 V , and the CH 1 AC-GND-DC
switch to GND.
b. Connect
the output of the
Medium-Frequency
Constant-Amplitude Signal Generator (Type 191) to the
CH 1 & 2 inputs via a GR-to-BNC adapter, 42-inch 50 12
BNC cable, X I 0 BNC attenuator, 50 12 BNC termination,
and a dual input coupler.
c.
Adjust the Medium-Frequency signal generator for a 4
division display of a 50 MHz signal.
d.
Set both V O L T S /D IV switches to 20 m V and the
V E R T MODE switch to CH 1.
e.
CHECK —CRT display for no more than 0.2 division
of deflection.
f.
Set the CH 2 AC-GND-DC switch to G N D , the CH 1
AC-GND-DC switch to DC, and the CH 1 V O L T S /D IV
switch to 0.2 V .
g.
Adjust the Medium-Frequency signal generator for a 4
division display of a 50 MHz signal.
h. Set the V E R T MODE switch to CH 2.
i.
C HECK —C RT display for no more than 0.2 division of
deflection.
j.
Disconnect the test setup.
37. Check Bandwidth Lim it Operation
a. Pull the 20 MHz BW /TRIG VIEW button to BW and
set the CH 1 AC-GND-DC switch to DC.
b. Connect the Medium-Frequency Constant-Amplitude
Signal Generator (Type 191) to the C H I input via a
42-inch 50 12 BNC cable and a 50 12 BNC termination.
c.
Adjust the Medium-Frequency signal generator for a
six division display of a 50 kilohertz signal.
d.
Increase the output frequency of the signal generator
until the display is reduced to 4.2 divisions.
e.
C HECK —Output frequency of the signal generator is
between 15 and 25 megahertz.
f.
Disconnect the test setup.
5-39
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 ...