Tektronix 465M User Manual

LEFT
+32
SIDE
Figure 5-18. Crt
and
Calibration test point and adjustment
iocations.
AIR
FORCE
T033A1
-13-496-1
NAVELEX
0969-LP-170-0010
Maintenance Instructions
h. Dc
Balance
(Figure
5-19).
(1)
SetCH 1
and
CH 2
VOLTS/D IV to
5 m
(IX
window) and
A
AND B
TIME/DIV to .2
ms.
(2)
Adjust
CH
1
vertical
POSITION
to
vertically
center the
trace.
(3)
Adjust
R4134
for no trace
shift when
switching
CH
1
VOLTS/DIV
between 5
m and 10 m.
(4)
Set
VERT
MODE to
CH
2.
(5)
Adjust
CH 2
vertical
POSITION
to
vertically
center the trace.
(6)
Adjust
R4234
for no trace
shift when switching
CH 2
VOLTS/DIV
between
5
m
and 10 m.
(9)
Continue to
the
next procedure.
f. Geometry
(Figure
5-18).
(1)
Readjust
TIME/DIV
VAR and horizontal
POSI-
TION for one
time
mark per
division.
(2)
Adjust
GEOM, R572 for
minimum
bowing of
time
marks.
INTERACTION NOTE
This
adjustment
may affect
Y-Axis Alignment
and
TRACE ROTATION.
Repeat Y-Axis
Alignment,
TRACE
ROTA TION,
and Geometry
adjustments
until the best
alignment of all is reached.
(3)
Reset
TIME/DIV VAR fully
clockwise in
its
detent.
(4)
Disconnect
the time mark
generator.
g.
Calibrator (Figure
5-18).
(1
)
Connect a
digital
voltmeter
to
the
CALIBRATOR
output.
(2)
Connect a
shorting
jumper between
TP376 and
TP386
(a
small
alligator
clip works nicely).
(3)
Adjust
CAL
AMPL,
R386
for
a
1.00 volt
reading.
(4)
Remove the
shorting jumper
from TP376 and
TP386.
(5)
Disconnect the
voltmeter.
i. Vertical Gain
(Figure
5-19).
(1)
Set CH
1
and CH 2 VOLTS/DIV to 5
m
(IX
window) and VERT
MODE
to CH 1.
(2)
Connect a calibration generator (select STD
OUTPUT) to CH 1 input through an unterminated
50
ohm
BNC
cable.
Set the generator for a 20
millivolt
output.
(3)
Adjust R4443 for a
4 division display.
(4)
Set
VERT MODE
to
CH
2.
(5)
Move the calibration generator output
from
CH
1
input to CH 2 input.
(6)
Adjust R4272 for
a
4 division display.
(7)
Continue
to
the next procedure.
j.
Channel 2 Low Frequency Compensation
(Figure 5-19).
(1
)
Set square wave generator (same as calibration
generator, if using
PG
506)
for
a 1
kilohertz, HIGH AMPL
OUTPUT.
(2)
Disconnect
the square wave generator
output
from CH 2 and reconnect
it to
CH
2 through
a
10X
at-
tenuator,
50 ohm termination, and an input
RC normal-
izer.
Set the generator
for
a
5 division display. During
adjustments, maintain
a 5
division
display.
NOTE
Use a low capacitance tuning
too! when
making compensation adjustments.
(3)
Adjust
C4201
for the
best
flat
top
waveform.
5-47

Tektronix 465M Specifications

General

Brand	Tektronix
Model	465M
Category	Test Equipment
Language	English