Calibration—475
74. Check A INTEN Timing Accuracy
a. Set the H O R IZ DISPLA Y switch to A IN T E N .
b.
CHECK—Using the A T IM E /D IV switch and Time-
Mark Generator settings given in Table 5-8, check that A
IN TEN timing is within the given tolerance.
TAB LE 5-8
A Intensified Timing Accuracy
A T IM E /
D IV
Switch
Setting
Time-
Mark
Generator
Output
CRT
Display
(markers/
division)
Accuracy
+20° C to
+30° C
+15° C to
+55° C
0.05 jus
50 ns
1
2%
3%
0.1 jus
0.1 jus
1
2%
3%
0.2 jus
0.1 jus
2
2%
3%
0.5 jus
0.5 jus
1
2%
3%
1 JUS
1 JUS
1
2%
3%
2jus
1 JUS
2
2%
3%
5 jus
5 jus
1
2%
3%
10 jus
10 jus
1
2%
3%
20 jus
10 jus
2
2%
3%
50 jus
50 jus
1
2%
3%
0.1 ms
0.1 ms
1
2%
3%
0.2 ms
0.2 ms
2
2%
3%
0.5 ms
0.5 ms
1
2%
3%
1 ms
1 ms
1
2%
3%
2 ms
1 ms
1
2%
3%
5 ms
5 ms
1
2%
3%
10 ms
10 ms
1
2%
3%
20 ms
10 ms
2
2%
3%
50 ms
50 ms
1
2%
3%
0.1 s
0.1 s
1
2%
3%
0.2 s
0.1 s
2
2%
3%
0.5 s
0.5 s
1
2%
3%
75. Check Magnified Timing Accuracy
a.
C HECK —Using the A T IM E /D IV switch and the
Time-Mark Generator settings given in Table 5-10, check that
A magnified sweep timing is within the given tolerance.
Note the portions of the total magnified sweep length to be
excluded from the measurement.
76. Check Delay Time Accuracy
a.
Set the H O R IZ D ISPLA Y switch to B D L Y 'D , the A
T IM E /D IV switch to 0 .0 5 jus, the B T IM E /D IV switch to
0.01
ms
and the B SOURCE switch to STARTS A FTE R
D E L A Y .
b.
CHECK —Using the A T IM E /D IV switch, the B
T IM E /D IV switch and the Time-Mark Generator settings
given in Table 5-9, check that delayed sweep accuracy is
within the given tolerance. First set the D E L A Y T IM E
POSITION dial to 1.00 and rotate the dial until the sweep
starts at the top of the second time marker. Note the
control setting, then set the dial to 2.00 and rotate it
slightly until the sweep starts at the top of the third time
marker. The error for intervals less then 1 dial division
cannot exceed 0.01 dial division. Continue to rotate the
D E L A Y T IM E POSITION dial to check between the 1.00
and 9.00 settings for all A sweep speeds from 0.05
ms
to
0.5 s. The difference between any two time markers greater
than 1 dial division apart cannot exceed 1%.
N O T E
Sweep w ill s tart a t the top o f the th ird tim e m arker a t
1.00 and a t the top o f the nineteenth tim e m arker a t
9 .0 0 fo r sweep rates which are m ultiples o f 2 (e.g.,
2 ps, 2 0 ps, 0 .2 ms, etc.), i f in d o u b t as to the correct
setting o f the D E L A Y T IM E P O S IT IO N d ial, set the
H O R IZ D IS P L A Y switch to A IN T E N and check
which tim e m arker is intensified.
TABLE 5-9
Delayed Sweep Accuracy
A T IM E /D IV
B T IM E /D IV
Time-Mark
Switch
Switch
Generator
Setting
Setting
Output
0.05 jus
0.01 jus
0.05
ms
0.1 jus
0.01 jus
0.1 jus
0.2 jus
0.05 Ms
0.1 jus
0.5 jus
0.05 jus
0.5 jus
1 JUS
0.1 jus
1 JUS
2 jus
0.1 jus
1 JUS
5 jus
0.1 jus
5
ms
10 jus
1
ms
10
jus
20 jus
1
ms
10 jus
50 jus
1 Ms
50 jus
0.1 ms
10 jus
0.1 ms
0.2 ms
10 jus
0.1 ms
0.5 ms
10 jus
0.5 ms
1 ms
0.1 ms
1 ms
2 ms
0.1 ms
1 ms
5 ms
0.1 ms
5 ms
10 ms
1 ms
10 ms
20 ms
1 ms
10 ms
50 ms
1 ms
50 ms
0.1 s
10 ms
0.1 s
0.2 s
10 ms
0.1 s
0.5 s
10 ms
0.5 s
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 ...
Page 215: ......
Page 237: ......
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 ...