Calibration—475
c. C HECK—That the CH 1 U N C A L light turns on when
the V A R control is out of the detent position.
d. C HECK —CRT display for 2 divisions or less of trace
shift when rotating the CH 1 V A R control through its
range.
e.
A D JU ST—CH 1 Variable Balance adjustment, R110
(see Fig. 5-8) for minimum trace shift when rotating the
CH 1 V A R control through its range.
f. Return the CH 1 V A R control to the detent position.
15. Adjust CH 1 Gain Switch Balance
a. Set the CH 1 V O L T S /D IV switch to 2 m V.
b. Position the trace to the center horizontal line.
c.
CHECK—CRT
display for minimum trace shift
between 2 m V and 5 m V positions of the CH 1 V O L T S /
D IV switch.
d.
A D JU ST—CH 1 Gain Switch Bal adjustment, R135
(see Fig. 5-8), for minimum trace shift between 2 mV and
5 m V positions of the CH 1 V O L T S /D IV switch.
16. Check Probe Indicator Lights
a. Set both V O L T S /D IV switches to 5 mV.
b. Connect a X I 0 probe to the CH 1 input.
c.
C HECK—Light under 5 m V setting is extinguished
and the light under 50 m V setting turns on.
Fig. 5-8. Location of CH 1 Var Voits/Div Balance and Gain Switch
Balance adjustments.
d. Set the V E R T MODE switch to CH 2.
e. Move the X I 0 probe to the CH 2 input.
f. CHECK—Light under 5 m V setting is extinguished and
the light under 50 m V setting turns on.
g. Remove the X I 0 probe.
17. Check AC-GND-DC Switches
a. Set both AC-GND-DC switches to DC.
b. Connect the Standard Amplitude Calibrator output to
the CH 2 input via a 42-inch 50 12 BNC cable.
c. Adjust the Standard Amplitude Calibrator for a
20 m V output.
d. Position the bottom of the display to the center
horizontal line.
e. Set CH 2 AC-GND-DC switch to GND.
f. C H E C K —For no vertical deflection, trace is at the
center horizontal line.
g. Set the CH 2 AC-GND-DC switch to AC.
h. CHECK —That the display is centered about the
center horizontal line.
i. Move the test signal to the CH 1 input.
j. Set the V E R T MODE switch to CH 1.
k. Position the bottom of the display to the center
horizontal line,
l
. Set the CH 1 AC-GND-DC switch to GND.
m. Repeat step 17-f.
n. Set the CH 1 AC-GND-DC switch to AC.
®
5 -3 0
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 ...