Operating Information—475
switch. An intensified portion
appears on the display during
the B sweep time. This switch
position provides a check of the
duration and position of the B
sweep
(delayed
sweep)
with
respect to the delaying sweep
(A).
B D L Y D : Sweep rate determined
by the B T IM E /D IV switch with
the delay time determined by
the setting of the D E L A Y T IM E
(A T IM E /D IV ) switch and the
D E L A Y -T IM E POSITION dial.
Horizontal POSITION Positions the display horizontally.
PROBE POWER
Connectors that make operating
power available for active device
probe systems.
O B TA IN IN G BASIC DISPLAYS
Introduction
The following instructions will allow the operator who is
unfamiliar with the operation of the 475 to obtain the basic
displays commonly used. Before proceeding with these
instructions, preset the instrument controls as follows:
X I 0 MAG
Increases the displayed sweep rate
by a factor of 10.
Calibrator and Power
C A LIB R A TO R
A combination current loop/square-
wave
v o lta g e
output
device.
Vertical Controls
V E R T MODE Switch
V O L T S /D IV Switches
V O L T S /D IV VA R
Controls
Input Coupling Switches
Vertical POSITION
CH 1
Proper position determined
by amplitude of signal
to be applied.
Calibrated detent.
AC
POWER
LOW LINE
Rear Panel
A +GATE
B +GATE
Provides
a
30 mA
squarewave
Controls
Midrange
current, 300 m V squarewave volt
20 MHz BW Switch
Not limited
age signal with a repetition rate of
IN V E R T Switch
Button out
approximately 1 kHz.
IN T E N S IT Y Control
Fully counterclockwise
FOCUS Control
Midrange
Turns instrument power on and off.
SCALE IL L U M Control
Midrange
Light that indicates the applied line
voltage is below the lower limit of
Trigger Controls (both A ahd B if applicable)
the regulating range selected by the
R e g u la t in g
Range
S e le c to r
assembly.
SLOPE Switch
LE V E L Control
SOURCE Switch
+
0
NORM
COUPLING Switch
AC
T R IG MODE Switch
A T R IG H O LD O FF
AUTO
O u tp u t
connector
providing
a
Control
NORM
positive-going
rectangular
pulse
coincident with the A sweep time.
O u tp u t
connector
providing
a
positive-going
rectangular
pulse
coincident with the B sweep time.
CH 2 V E R T S IG N A L
O u tp u t
connector
providing
a
O U T
sample of the signal applied to the
CH 2 input connector.
E X T Z A X IS IN PUT
In p u t
connector
for
intensity
modulation of the CRT display.
Horizontal Sweep Controls
T IM E /D IV Switches
T IM E /D IV V A R
H O R IZ D ISPLA Y Switch
X I 0 MAG Switch
POSITION Control
Locked together at 1 ms
Calibrated detent
A
Off (button out)
Midrange
Regulating Range
Selector
Selects the regulating range of the
in te rn a l
power
supplies
(low,
m edium ,
high;
determined
by
specific line voltage applied to
instrument).
Normal Sweep Display
1. Set the POWER switch to on (button out). Allow
several minutes for instrument warmup.
2. Connect the external signal to the CH 1 input
connector.
2-6
®
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 ...