Filter
Top Products
4. Final Display Adjustments (SN 3004A and Above)
RI20
R220
R512
R513
R319
R426
R437
Figure 3-32. Location of Final Display Adjustments on
AlA
‘Ihble
3-6. Initial Adjustment Positions
Adjustment
AlA
R120
Y GAIN
AlA
R127
Y POSN
AlA
R220
X GAIN
AlA
R227
X POSN
AlA
R319
INT GAIN
AlA
R409
FOCUS COMP
AlA
R426
T/B FOC
Al
A2
R427
T/B CTR
Al
A2
R437
R/L FOC
A lA2
R440
R/L CTR
AlA
R512
ORTHO
AlA
R513
3D
AlA
R516
INT LIM
AlA
R517
ASTIG
Front-panel INTENSITY
Front-panel FOCUS
Front-panel ALIGN
Position
centered
centered
centered
centered
two-thirds clockwise
centered
centered
centered
centered
centered
centered
centered
fully counterclockwise
centered
fully counterclockwise
centered
centered
4. Set the spectrum analyzer’s LINE switch to ON, and wait at least
5 minutes to allow the CRT and high-voltage circuits to warm up.
5. Set the front panel INTENSITY control fully counterclockwise and
adjust AlA2R516 INT LIM until the display is just visable. See
Figure 3-32.
6. Set the front-panel INTENSITY control fully clockwise.
7. Adjust AlA2R220 X GAIN, AlA2R227 X POSN, AlA2R120 Y
GAIN, and AlA2R127 Y POSN for optimum centering of the
display annotation and graticule pattern.
3-62 Adjustments