Calibration—475
b. Connect a 50 m V signal from the Standard Amplitude
Calibrator to the CH 1 input.
c. A D JU ST—CH 1 Position Centering, R176, so the top
and bottom of the display can be positioned past the center
horizontal line.
d. Repeat the above for CH 2 — adjust R276.
16. Adjust CH 2 Invert Balance (R215) and Check
Operation
17. Adjust CH 1 Gain
a. CH 1 V O L T S /D IV to 5 m V.
b. Connect 20 m V signal from Standard Amplitude
Calibrator to CH 1 input.
c. A D J U S T -C H 1 5 mV Gain, R165, for 200 m V push-
pull signal between preamp sides of the delay line.
d. CH 1 V O L T S /D IV to 2 m V.
e.
A D JU ST—CH 1 2 mV Gain, R 125, for 100 m V push-
pull signal between preamp sides of the delay line.
f.
A DJU ST—R449 for 5 divisions of deflection.
g.
Check all attenuator ranges for proper deflection,
within 3%.
h.
Check Variable Range: CH 1 VA R control must
reduce a 5 division signal to less than 2 divisions.
18. Adjust CH 2 Gain
a. CH 2 V O L T S /D IV to 5 m V.
b. Connect 20 m V signal from Standard Amplitude
Calibrator to CH 2 input.
c.
A D JU ST—CH 2 5 m V Gain, R265, for 4 divisions
deflection, within 3%.
d.
CH 2 V O L T S /D IV to 2 m V; test signal to 10 m V.
5-16
e.
A D JU ST—CH 2 2 m V Gain, R225, for 5 divisions
deflection, within 3%.
f.
Check all attenuator ranges for proper deflection,
within 3%.
g.
Check Variable Range: CH 2 VA R control must
reduce a 5 division signal to less than 2 divisions.
19. Check A D D Operation
a.
Both V O L T S /D IV to 5 m V,
both AC-GND-DC to DC.
b.
Connect a 10 m V signal from the Standard Amplitude
Calibrator to both CH inputs.
c.
V E R T MODE to A D D .
d.
Check for 4 divisions deflection, within 3%.
20. Check Compression and Expansion
a.
Position a 2 division signal to top and bottom of
graticule.
b.
Check for no more than 0.1 division of compression
or expansion.
21. Check A L T Operation
22. Check CHOP Operation
a.
T IM E /D IV to 0.2 jus,
V E R T MODE to CHOP.
b.
Check for blanking of transients at normal IN T E N
S IT Y level.
c.
Check duration of each cycle is about 5 divisions.
2 3 . Adjust
Vertical
Output
High-Frequency
Response
®
a. V E R T MODE to CH 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 ...
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 ...