c. Adjust the A L EV E L control for a stable display.
Calibration—475
e.
C HECK-Using the CH 2 V O L T S /D IV switch and the
Standard Amplitude Calibrator settings given in Table 5-2,
check that the vertical deflection factor is within the given
tolerance in each position of the CH 2 V O L T S /D IV switch.
d. CHECK —Duration of each cycle is about 1 division.
9. Check Channel 1 and 2 Variable Volts/Division
Range
a. Set both V O L T S /D IV switches to 20 mV.
b. Adjust the Standard Amplitude Calibrator for a 0.1
volt output.
c. Rotate
the
CH 2 V A R control fully counter
clockwise.
d.
C HECK—CRT display
reduces
to less than 2
divisions.
e.
Set the CH 1 AC-GND-DC switch to DC and the
V E R T MODE switch to CH 1.
f. Rotate the CH 1 VA R control fully counterclockwise.
g. CHECK—CRT display reduces to less than 2 divisions.
h.
Return both V A R controls to the detent positions.
i. Disconnect the test setup.
10. Check Alternate Mode Operation
a.
Set the V E R T MODE switch to A L T and the A
L E V E L control fully clockwise.
b.
Position the traces 2 divisions apart.
c.
CHECK—That the sweeps alternate in all settings of
the T IM E /D IV switch except X -Y .
11. Check Chop Mode Operation
a.
Set the A T IM E /D IV switch to 1 jus, the A SOURCE
switch to N ORM , and the V E R T MODE switch to CHOP.
e.
C HECK —CRT display for complete blanking of
switching
transients
between chopped segments
(see
Fig. 5-1).
12. Check Vertical Amplifier Bandwidth
a.
Set the T R IG MODE switch to A U T O , the A
T IM E /D IV switch to 0.2 ms, and both V O L T S /D IV
switches to 5 m V.
b. Connect the output of the High-Frequency Constant-
Amplitude Signal Generator (067-0532-01) to the CH 1
input via a GR-to-BNC adapter, X I 0 BNC attenuator, and a
50 £2 BNC termination.
c. Adjust the High-Frequency signal generator output
amplitude for a five-division display of a 3 megahertz
reference signal.
d.
W ithout changing the output amplitude, increase the
output frequency of the signal generator until the display is
reduced to 3.5 divisions.
e.
C HECK —Output frequency of the High-Frequency
signal generator must be at least 200 megahertz.
f.
Move the test signal to the CH 2 input and set the
V E R T MODE switch to CH 2.
b.
Position the two traces about 4 divisions apart.
Fig. 5-1. Typical CRT display when checking chopped blanking.
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 ...
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Page 200: ...FIG 3 RIGHT SIDE l 475 OSCILLOSCOPE ...
Page 201: ...V S X O t l B O T T OVJ 8 8 ...
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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 ...