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tig . 6 -1 S. Equipment i* t u p (o r a d |u itln g Vortical A m p llflo r a lU n u a to r com ponia tlon.
Control Settings:
TRIGGER
SLOPE
COUPLING
SOURCE
LEVEL
SWEEP TIME/CM
VARIABLE
HORIZONTAL DISPLAY
VERTICAL
SENSITIVITY
VARIABLE
+ INPUT
-IN P U T
29. Adjust Attenuator Compensation—
Vertical
a.
The equipment setup is shown in Fig. 6-15.
b.
Set the square-wave generator (item 4 of Recommend
ed Equipment) to supply a 1-kHz square wave.
©
AC
INT.
FREE RUN
2 mSEC
CALIBRATED
SWEEP NORMAL (XI)
.2 VOLTS/CM
CALIBRATED
DC
G ND
O
c.
Connect the generator output through a 50-ohm ter
mination, (or a X 1 0 attenuator), o 50-ohm cable, and a 47
pF Input Time-constant Norm alizer to the Vertical + IN
PUT, in the order given.
NOTE
To a tta in the desired d e fle c tio n it w ill be neces
sary to a d d o r rem ove the 50-ohm term in a tio n
a n d /o r the X I 0 a tte n u a to r.
the accuracy o f the tim e-contsant adjustm ents.
d.
Adjust the generator output for a display 3 cm in
amplitude, and center the display in the graticule viewing
area.
e. Rotate the LEVEL control counterclockwise to obtain
a stable display (near 0).
f.
Check— Optimum square-wave w ith fla t top (see Fig.
6-16 A and B for typical displays).
g.
Adjust C416 for optimum square-wave with flat top.
Fig. 6-18.
C a lib ra tio n — Type 503
This w ill not a ffe c t
6-15
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