
3. Preliminary Display Adjustments (SN 3004A and Above)
A3A2
A3Al
Figure 3-24. Location of
AlA
and A3A2
TP501
R127
R120
Cl09 TP105 R227
C204
R220
R217
JS
GND
c307
Figure 3-25.
AlA
Adjustment Locations
10. Set the pulse/funtion generator controls as follows:
MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NORM
Waveform
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..pulse
Frequency (FRQ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ,200
kHz
Width (WID)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250 ns
Amplitude (AMP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.2.00
V
Offset (OFS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O.OOO mV
Disable
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . off (OUTPUT enabled)
11. 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 3-23.
Note
The pulse/function generator 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.
3-58 Adjustments
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