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3. Preliminary Display Adjustments (SN 3001A and Below)
A1A5,
AlA4-
AlA2’
-
A3A2
Figure 3-17. Location of
AlA2,
AlA4,
AlA5,
and A3A2
R22
HF
G(lN
f
f$
GA
I
id
“1:
Ry
R28
HF GAIN
,
~000uu000000u00ur
AlA
AlA4/AlA5
Figure 3-18.
AlA2,
AlA4,
and
AlA
Adjustment Locations
10. Set the Pulse/Function Generator controls as follows:
MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . NORM
Waveform
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..pulse
Frequency (FRQ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 kHz
Width(WID)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...250 ns
Amplitude (AMP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.2.00
V
Offset (OFS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ,000
mV
Il. Connect the output of the Pulse/Function Generator to
Jl
(X
input) on the Display Adjustment PC board in the
A3A2
slot as
shown in Figure 3-16.
Note
The Pulse/Function Generator’s output must be terminated with 50
ohms. Use a BNC tee, a 500 termination, and a BNC female to SMB
female adapter. Install the 500 termination as close to the Display
Adjustment PC Board as possible.
Adjustments 3-47