C alibration-475
34. Check Triggering
a. High-frequency triggering:
Internal
40 MH
200 MHz
AC
0.3 div
1.5 div
LF REJ
0.3 div
1.5 div
DC
0.3 div
1.5 div
External
AC
50 m V
250 m V
LF REJ
100 m V
500 m V
DC
50 m V
250 m V
Multiply by 10 for E X T -r 10 sensitivity.
H O R IZ O N T A L SYSTEM C A LIB R A TIO N
37. Adjust Delay Start and Delay Stop
a. A T IM E /D IV to 1 ms,
B T IM E /D IV to 5 jus,
H O R IZ D ISPLA Y to A IN T E N ,
B SOURCE to STARTS A FTE R D E L A Y ,
D E L A Y T IM E POSITION to 1.00.
b. Use 1 ms time markers.
c. A D JU ST—Delay Start, R938, to intensify the left side
b.
HF REJ—Triggers on 0.3 division at 50 kHz; does not
Qf the 2nd time marker,
trigger at 1 MHz.
c.
LF REJ—Triggers on 0.3 division at 50 kHz; does not
trigger on 60 Hz.
d.
Check SIN G L SWP operation and R EA DY light.
e.
Check A NORM triggering.
f.
Check LIN E triggering.
g.
Check A UTO recovery time.
35. Check External LEVEL Range
a. E X T : at least ±2 V (4 V P-P) for both A and B.
b. E X T -T- 10: at least ±20 V (40 V P-P) for A only.
36. Adjust T R IG V IE W
a.
A DJU ST—Trigger View Centering, R673, so trace is at
center horizontal line, within 1 division.
b.
Connect 200 mV square-wave signal from Standard
Amplitude Calibrator to A External Trigger input.
c.
Check for 3.2 to 4.8 divisions of display with T R IG
V IE W in.
d. D E L A Y T IM E POSITION to 9.00.
e. A D JU ST—Delay Stop, R936, to intensify the left side
of the 10th time marker.
f. H O R IZ D IS PLA Y to B D L Y 'D .
g. D E L A Y T IM E POSITION to 1.00.
h. A D JU ST—Delay Start, R938, so the 2nd time marker
starts at the beginning of the sweep.
i. D E L A Y T IM E POSITION to 9.00.
j. A D JU ST—Delay Stop, R936, so the 10th time marker
starts at the beginning of the sweep.
38. Check Differential Time Accuracy
a. Accuracy within 0.01 division from +15°C to + 3 5 °C.
b. Accuracy within 0.02 division from —1 5 °C to + 5 5 °C.
39. Adjust Horizontal Gain
a. H O R IZ D IS PLA Y to A,
both T IM E /D IV to 1 ms.
b. Use 1 ms time markers.
®
5-19
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 ...