TR IG G ER SYSTEM C A LIB R A TIO N
Calibration—475
Equipment Required
1. Standard Amplitude Calibrator (067-0502-01).
8. GR-to-BNC Female Adapter.
2. High-Frequency Constant-Amplitude Signal Generator
9. 42-inch 50 £2 BNC Cable.
(067-0532-01).
10. 18-inch 50 £2 BNC Cable (two).
3. Medium-Frequency Constant-Amplitude Signal Genera
tor (Type 191).
11. X I 0 BNC Attenuator
4. Low-Frequency Sine-Wave Generator (General Radio
1310-A).
12. X 2 BNC Attenuator
13. BNC-T Connector
5. Time-Mark Generator (Type 2901).
14. 50 £2 BNC Termination (two).
6. 50 £2 Signal Pickoff Unit (Type CT-3).
15, Dual Input Coupler (two).
7. 50 £2 5 nanosecond GR Cable.
16. Three-inch Screwdriver.
Control Settings
Preset instrument controls to the settings given under
Preliminary Control Settings except as follows:
A SOURCE
E X T
38. Adjust A Trigger Sensitivity
a. Connect the
output of the Medium-Frequency
Constant-Amplitude Signal Generator (Type 191) to the A
and B External Trigger inputs via a 50 £2 5 ns GR cable,
50 £2 Signal Pickoff Unit (Type CT-3) thru output, GR-to-
BNC adapter, X10 BNC attenuator, 50 £2 BNC termination,
and a dual input coupler.
b. Connect the 10% BNC output connector of the Signal
Pickoff Unit to the CH 1 and CH 2 inputs via an 18-inch
50 £2 BNC cable, a 50 £2 BNC termination, and a dual input
coupler.
c.
Adjust the Medium-Frequency signal generator output
for a 3 division display of a 350 kHz signal.
d. Turn the CH 1 V O L T S /D IV switch to 0.1 V.
e.
C HECK —That a stable display can be obtained by
rotating the A L E V E L control.
f.
Adjust the Medium-Frequency signal generator to
increase the CRT display to 0.35 division.
g.
A D JU ST—A Trigger Sensitivity adjustment, R565,
(see Fig. 5-20) so that a stable display can just be obtained
by rotating the A L E V E L control.
39. Adjust B Trigger Sensitivity
a. Set the H O R IZ D ISPLA Y to B D L Y 'D , the B
COUPLING switch to AC, the B SOURCE switch to E XT,
and the B SLOPE switch to +.
b. Adjust the Medium-Frequency signal generator for a
0.3 division display.
R785
Fig. 5-20. Location of Trigger Sensitivity, Symmetry, and Centering
adjustments.
5-40
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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Page 211: ...4 4 75 O S C ILLO S C O P E FIG 5 CAB IN ET ...
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