Calibration—475
22. Adjust CH 2 Position Centering
a. Set the CH 2 V O L T S /D IV switch to 2 m V.
b. Move the test signal to the CH 2 input.
c. CHECK—The top of the CRT display can be posi
tioned below the center horizontal graticule line, and that
the bottom of the display can be positioned above the
center horizontal graticule line.
d. A D JU ST—CH 2 Position Centering adjustment, R276
(see Fig. 5-11), so the top of the CRT display can be
positioned below the center horizontal graticule line, and
the bottom of the display can be positioned above the
center horizontal graticule line.
23. Adjust CH 1 Gain
a. Set the V E R T MODE switch to CH 1, the CH 1
V O L T S /D IV switch to 5 m V , and the CH 1 AC-GND-DC
switch to DC.
b. Move the test signal to the CH 1 input.
c. Adjust the Standard Amplitude Calibrator for a
20 mV output.
d. Set the Test Oscilloscope: Vertical Mode to A D D ,
Channel 2 to IN V E R T , and both V O L T S /D IV switches to
5 m V.
e. Connect two X I 0 probes from the Test Oscilloscope
to the preamp side of the delay line.
Fig. 5-11. Location of CH 2 Position Centering adjustment.
f. CHECK—The Test Oscilloscope for a 200 m V (peak-
to-peak) signal.
g. A D JU ST—CH 1
5 mV Gain adjustment, R165 (see
Fig. 5-12) for a 200 mV (peak-to-peak) display on the Test
Oscilloscope.
N O TE
2 0 0 m V value is dependent on the C R T sensitivity.
h. Set the CH 1 V O L T S /D IV to 2 m V and adjust the
Standard Amplitude Calibrator for a 10 m V output.
i. C HECK—The Test Oscilloscope for a 100 m V (peak-
to-peak) signal.
j. A DJU ST—CH 1
2 m V Gain adjustment, R125 (see
Fig. 5-12) for a 100 m V (peak-to-peak) display on the Test
Oscilloscope.
k. Remove the X I 0 probes from the delay line.
I. CHECK—CRT display for 5 divisions of deflection.
m. A DJU ST—Vertical Output Gain adjustment, R449
(see Fig. 5-13) for 5 divisions of deflection.
n. C HECK-Accuracy of the CH 1 V O L T S /D IV switch
using the settings given in Table 5-6 to see if the deflection
factor accuracy for each position is within 3%.
5-32
Fig. 5-12. Location of Gain adjustments for Channel 1.
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 ...
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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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