Calibration—475
Fig. 5-5. Location of Vertical Output Bias adjustment.
11. Adjust Vertical Shield Voltage
a.
Vertically position the trace to the center horizontal
graticule line.
b.
Using the Precision DC Voltmeter, measure the
voltage on each vertical deflection plate of the CRT with
respect to ground. (Negative meter lead to ground.) Note
the meter reading.
c. Add both readings noted in step 11-b together and
divide by two. Note the calculated voltage.
d. Connect the Precision DC Voltmeter between TP1395
and ground^ (Negative meter lead to ground.)
g. Remove the Precision DC Voltmeter connections.
12. Adjust Delay-Line Driver Centering
a. Using the Precision DC Voltmeter, monitor both ends
of the delay line until the readings are equal, while
adjusting the CH 1 POSITION control.
b. C HECK—Precision DC Voltmeter for a reading of 0
volts.
c.
A D JU ST—Delay-Line Driver Centering adjustment,
R385 (see Fig. 5-7), for a reading of 0 volts at both ends of
the delay line.
d. Remove the Precision DC Voltmeter connections.
13. Check BEAM F IN D Operation
a.
Position the trace off-screen with the CH 1 POSITION
and horizontal POSITION controls.
b. Push the BEAM F IN D pushbutton and hold it in.
c. C HECK —That the trace is brought into the CRT
viewing area.
d.
Release the BEAM F IN D .
e. CHECK—Meter reading is equal to the voltage calcu
lated in step 11-c, within ±0 .5 volt.
14. Adjust CH 1 Variable Volts/Division Balance
a. Set the CH 1 V O L T S /D IV switch to 5 m V.
f. A DJU ST—Vertical Shield Volts adjustment, R1395
(see Fig. 5-6), for a meter reading equal to the voltage
calculated in step 11-c.
b. Position the trace to the center horizontal line.
if
Fig. 5-6. Location of Vertical Shield Voltage adjustment.
Fig. 5-7. Location of Delay-Line Driver Centering adjustment.
5-29
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 ...