1
2
»■
3
A
R3401
R3403
VR340T
R3405
R3407
R3410
, B
R3402
U3401
R3404
C3401
R3406
U3402
R3408
R3409
A3411
?
J141 •
6863-27
c
®
Static Sensitive Devices
See Maintenance Section
COMPONENT NUMBER EXAMPLE
Assembly
Number
Component Number
A23 A2R1234
XT~r
Subassembiy
Number
(if
used)
"chemstic
Circuit
Number
Chassis-mounted components have no Assembly Number
prefix—see end of Replaceable Electrical Parts List
Figure 10-9. A14—Dynamic Centering board.
A14—DYNAMIC CENTERING BOARD
CIRCUIT
NUMBER
C3401
J141
J141
R3401
R3402
SCHEM
NUMBER
6
6
6
6
6
CIRCUIT
NUMBER
R3403
R3404
R3405
R3406
R3407
SCHEM
NUMBER
6
6
6
6
6
CIRCUIT
NUMBER
R3408
R3409
R3410
R3411
U3401
SCHEM
NUMBER
6
6
6
6
6
CIRCUIT
NUMBER
U3402
VR3401
SCHEM
NUMBER
6
6
A14—DYNAMIC CENTERING
2465B/2467B Service
TEST WAVEFORM SETUP INFORMATION
The numbered waveforms below were obtained at the test points indicated on the accompanying schematic diagram and
boarci dolly. The waveforms are representative of signals that may be expected at the associated points when the following
setup conditions are observed. Any change(s) from the given setup conditions required to produce a given waveform are
noted with that waveform illustration. Where B Sweep setup conditions are referenced with a waveform, it is assumed that
the B SEC/DIV knob is set to 100 nsldw unless otherwise noted.
2465B SETUP
Connect a 200-mV, 1-kHz squarewave to the CH1 input
of the oscilloscope using a BNC cable.
Set:
VERTICAL MODE
Input Coupling
CH1 and CH2
VOLTS/DIV
CH1 and CH2
CH1 and CH2 VAR
A and B SEC/DIV
A and B SEC/DIV VAR
TRIGGER
MODE
SOURCE
COUPLING
HOLDOFF
SLOPE
LEVEL
CH1
1 MfiDC
50 mV
In detent
200
MS
(knobs locked)
In detent
AUTO
VERT
NOISE REJ
In detent
+ (plus)
Stably triggered display
+3V —
lr^
W/READOUT ON, SIGNAL CONSTANTLY CHANGES
+ 1V-
-1V-
W/READOUT ON, SIGNAL CONSTANTLY CHANGES
At At readout
A REF OR DLY POS 1000.0 us readout
INTENSITY Midrange
READOUT INTENSITY Minimum (once At
readout is set)
All other control settings are irrelevant.
TEST OSCILLOSCOPE SETUP
Using a X10 probe with the test oscilloscope, set its
Trigger Slope, Trigger Level, Volts/Div and Time/Div
ranges as required to obtain the indicated displays.
0
W/READ0UT
OFF
-3ms-
+4V
—
0
W/READOUT
OFF
-190mV-
0
(52 MAY LOOK LIKE 53) W/READOUT OFF
0
-190MV-
W/READOUT OFF (53 MAY LOOK LIKE 52)
00mV-
#///,„
/ , ,„=. « jp
/tf/
„i«^
n
0
-150mV-
H 5ms-
mtt- • in
ill
mi fi
VARIES W/READOUT AND VERTICAL POSITION
H00|»V —
0
0V —
HI Ul It- 1 s
,\ M
K
-5ms
■*!
-150mV — »\ 1 " t «V\ " >■'
:
™
VARIES W/READOUT AND VERTICAL POSITION
+30v- ;,;.-,>» « - ■ ,
+27V —
ru
+22V— - - A, y. «- i* >» i:
VARIES W/READOUT AND VERTICAL POSITION
TO I
V
0
«/ I..
+5V
VARIES W/READOUT AND VERTICAL POSITION
] |«-, |«-2.4ms-»j
100
M
s B SWEEP SELECTED - W/NO TRIGGER
0
0V
■
^
^»-2
.
4ms-*|
h n n
HOLDOFF
A
AND B
SEC/DIV KNOBS LOCKED
1200MS)W/NO
TRIGGER
■" 3ms—
-1.35V
0
0
-3ms-
VARIES W/HORIZONTAL POSITION
+28V-
-3ms-
VARIES W/HORIZONTAL POSITION
+
1
,5V —
0V —
- 3ms H HOLDOFF
|
SWEEP
|
B SWEEP 100 nS
+25V —
r- -, HOLDOFF
AMPLITUDE VARIES W/INTENSITY
A AND B SWEEP 200
M
S, DLY 0.0 READOUT OFF
*♦
+,2V
T
r
+ 10V 1
IT
*AMPLITUDE VARIES W/INTENSITY SETTING
A SWEEP 200
M
S
>
<
m
S
I
o
I
6863-38
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