Calibration—475
f.
C HECK—For LOW LIN E indicator light to turn on
when the autotransformer is below 103 volts.
g. Return the autotransformer for a 115 VAC output.
2.
Check High Voltage Power Supply
a.
Connect the DC Voltmeter between the -2 4 5 0 -v o lt
test point and ground (positive meter lead to ground). See
Fig. 5-3.
b.
CHECK—Meter for a reading of —2450 volts, within
±49 volts.
Fig. 5-3. Location of high-voltage and Grid Bias test points and
adjustments.
DISPLAY and Z-A XIS C A LIB R A TIO N
Equipment Required
1. DC Voltmeter
5. 42-inch 50 £2 BNC Cable
2. Time-Mark Generator (Type 2901)
6. 50 £2 BNC Termination
3. Test Oscilloscope
7. Three-inch Screwdriver
4. X I 0 Probe
8. Low-Capacitance Screwdriver
Control Settings
Preset instrument controls to the settings given under
Preliminary Control Settings except as follows:
IN T E N S IT Y
Fully Counterclockwise
T R IG MODE
NORM
3. Adjust CRT Grid Bias
a.
Connect the DC Voltmeter between TP1364 and
ground. (Negative meter lead to ground.) See Fig. 5-3.
b.
Set the IN T E N S IT Y control for a meter reading of
+15 volts.
c.
C HECK—CRT display for the dimmest, well-defined
dot.
d.
A D JU ST—CRT Grid Bias adjustment, R1375 (see
Fig. 5-3) for dimmest, visible dot.
e.
Turn CH 1 POSITIO N , FOCUS, and IN T E N S IT Y
controls fully clockwise.
f.
C HECK —Meter reading is between +20 volts and +30
volts.
g. Push BEAM F IN D pushbutton.
h.
C HECK—Meter for a reading of approximately +25
volts.
i.
Release BEAM F IN D button and remove DC V olt
meter connections.
j. Turn FOCUS, IN T E N S IT Y , and CH 1 POSITION
controls to mid-range.
k. Adjust FOCUS and IN T E N S IT Y controls for a
well-defined dot of nominal intensity.
5-26
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 ...