Tektronix 5441 Instruction Manual page 74

Adjustment Procedure-5441lR5441
-
P200
CR352
3
0 1 5 2
C R 3 5 6
9
-
R350
'
i
R 3 6 2
1
.
.
-
c l o p
< - -
- . .
- -
. .
- -
-
i
R Z 6 0
HORlZ
~-p2
CENTER
CR274
9
C R 2 0 1
. F
5 3 0 0
'
1 .
,
.
- -
-
5 ns TIMING
.
.
0 2 5 0
i -
v n i i z
CR246
3
0 2 4 4
,
'C266
m
CR315
.*
-
R165
-.
--
C 2 4 4 ; n 3 G 4
R364
A F ORTH
GAIN GEOM
ASTlG
2140-25
Fig. 4-3. Location of Geom, Astig, Orth, and crt display adjustments (Horizontal circuit board).
3. Adjust Geometry and Orthogonality
f. ADJUST-Y-axis alignment (orthogonality) R364 for
minimum tilt (see Fig. 4-3).
a. Remove the time-base unit from the right horizontal
compartment and install it in the center vertical
compartment.
g. ADJUST-Geom R365 for minimum bowing or tilt of
the trace display at the left and right edges of the graticule.
Adjustment may have to be compromised to obtain less
b. Remove the vertical amplifier unit from the left vertical
than graticule division bowing and tilt everywhere within
and install
it
in the right
horizontal
the graticule area, (See Fig. 4 3 for adjustment location.)
compartment.
c. Pull the POWER switch to turn on the oscilloscope.
h. CHECK-That the focus at the edges and corners of
the screen are similar to the focus at the center.
d. Set the FOCUS and INTENSITY controls for a well-
i. Press the POWER switch to turn off the oscilloscope.
defined trace, extending vertically above and below the grat-
the vertical amplifier unit and time-base unit in their
icule area.
respective compartments.
e. CHECK-Vertical bowing and tilt of the trace display
is less than .1 div when positioned horizontally across the
entire graticule area.
REV MAY 1982