Specification—475
POSITION Control Range
A t least +12 and —12 divisions from graticule center.
Signal Delay Between Channel 1 and Channel 2
±0.25 nanosecond at 5 m V /D IV .
Input R and C Time Constant
Aberrations should be 2% or less using a one megohm,
20 picofarad input time-constant normalizer.
T R IG G E R IN G
External Trigger Input Capacitance
Twenty picofarads within 30%.
TRIG V IE W Deflection Factor
50 mV/div ±20%. Exclude LF REJ and HF REJ trigger
coupling modes.
TRIG V IEW Risetime
< 3 .5 nanoseconds over the 10% to 90% part of the fast
rise portion.
TR IG V IEW Delay Difference
< 2
nanosconds
with
5 division signal having
1
nanosecond or less risetime from 25 ohm source, centered
vertically with equal cable length from signal source to
vertical channel and external trigger inputs, each terminated
in 50 ohms.
TRIG V IEW Centering of Trigger Point
Adjustable to within one division of center screen.
H O R IZO N TA L D EFLEC TIO N SYSTEM
Sweep Accuracy
Exclude the first 25 nanoseconds or 2 divisions
(whichever is greater) and all beyond the 100th division of
the sweep when checking 1 ns through 500 ns/division
magnified sweep rates.
Mixed Sweep Accuracy
Exclude the first 0.5 division after the display start, and
the first 0.2 division or 0.1 microsecond (whichever is
greater) after the transition of A to B.
Differential Time Measurement Accuracy
Exclude D E L A Y T IM E POSITION dial settings of 0.00
through 0.50 for 0.5 second through 1.0 microsecond/
division delaying sweep rates.
Exclude D E L A Y T IM E POSITION dial settings of 0.00
through
1.00
for
0.5
microsecond
through
0.05
microsecond/division delaying sweep rates.
Sweep Length (A Only)
A t least 10.1 divisions.
Magnifier Registration
Within
0.5
division
from
graticule
center
at
1
millisecond/division.
POSITION Control Range
Start of sweep must position to right of graticule center.
End of sweep must position to left of graticule center.
Check made at 1 millisecond/Division sweep rate.
Phase Difference between X and Y Axes Amplifiers
Within 1° from DC to 1 megahertz. Within 3° from 1
megahertz to 2 megahertz.
X Axis Low Frequency Linearity
0.2 division or less compression or expansion of a 2
division signal (at center screen) positioned to both
horizontal extremes of the display area.
CALIB R A TO R
Repetition Rate
Repetition Rate accuracy is typically within 25%.
Output Resistance
Approximately 9.4 ohms.
E XTER N A L Z A X IS INPUT
Maximum Input Voltage
Voltages applied to the E X T Z A X IS IN PUT connector
should be limited to less than 100 volts DC plus peak AC or
100 volts peak to peak AC at 1 kilohertz or less.
1-5
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 ...
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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 ...