Calibration—475
g. Rotate the CH 1 V A R control fully counterclockwise.
h. CHECK—C RT display reduces to less than 2 divisions.
i.
Return the VA R controls to the detent position.
26. Check A DD Mode Operation
a.
Set both V O L T S /D IV switches to 5 m V and both
AC-GND-DC switches to DC.
b. Connect the Standard Amplitude Calibrator output to
both channel inputs via a dual input coupler.
c.
Adjust the Standard Amplitude Calibrator for a
10 m V output.
d. Set the V E R T MODE switch to A D D .
e.
CHECK —For 4 divisions of deflection, within 0.12
division.
27. Check Compression and Expansion
a.
Set the CH 2 AC-GND-DC switch to GND and the
VE RT MOD E switch to CH 1.
b. Adjust the CH 1 V A R control for 2 divisions of
deflection centered about the center horizontal line.
c.
Position the top of the display to the top graticule
line.
d. CHECK —C RT display for 0.1 division or less of
compression or expansion.
e. Position the bottom of the display to the bottom
graticule line.
f. C HECK —CRT display for 0.1 division or less of
compression or expansion.
g. Return the CH 1 VAR control to the detent position.
h. Disconnect the test setup.
5-34
28. Check A L T Mode Operation
a. Set the V E R T MODE switch to A L T and the A
L E V E L control fully clockwise.
b. Position the two traces 2 divisions apart.
c.
C HECK —That the sweeps alternate at all settings of
the A T IM E /D IV switch, except X -Y .
29. Check CHOP Mode Operation
a.
Set the A T IM E /D IV switch to 0.2
m s
,
the A SOURCE
switch to N O R M , the A SLOPE switch to +, the V E R T
MODE switch to CHOP, and both AC-GND-DC switches to
GND.
b. Position the two traces 4 divisions apart.
c. Adjust the A LE V E L control for a stable display.
d.
C H E C K —For
complete
blanking
of
switching
transients between chopped segments (see Fig. 5-15).
e.
CHECK —Duration of each cycle is about 5 divisions.
30. Adjust
Vertical
Output
Amplifier
High-
Frequency Response
a.
Set the V E R T MODE switch to CH 1.
Fig 5-15. Typical CRT display when checking chopped blanking.
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 ...