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3-2. Adjustable Components (continued)
Reference Adjustment Adjustment Adjustment Function
Designator
Name
Number
AlA2R31
ORTHO
3
Sets orthogonality of CRT.
AlA2R32
PATTERN
3
Adjusts for optimum rectangular shape of CRT
display.
AlA2R35
INTENSITY
3
Sets adjustment range of front-panel INTENSITY
control.
LIMIT
AlA2R36
ASTIG
3
Adjusts astigmatism of CRT.
A
lA2R30
FOCUS GAIN
4
Adjusts for optimum focus of CRT display.
AlA3R14
FOCUS LIMIT
3
Coarse adjusts CRT focus.
AlA4ClO
Cl0
3
Adjusts rise and fall times of X deflection amplifier
pulse.
AlA4Cll
Cl1
3
Adjusts rise and fall times of X deflection amplifier
pulse.
AlA4R7
X POSN
3
Adjusts horizontal position of trace.
AlA4R27
X GAIN
394
Adjusts horizontal gain of trace.
AlA4R28
HFGAIN
3
Adjusts rise and fall times or X deflection amplifier
pulse.
AlA5ClO
Cl0
3
AlA5Cll
Cl1
3
AlA5R7
Y POSN
394
AlA5R27
Y GAIN
394
AlA5R28 HF GAIN
3,4
Adjusts rise and fall times of Y deflection amplifier
pulse.
Adjusts rise and fall times of Y deflection amplifier
pulse.
Adjusts vertical position of trace.
Adjusts vertical gain of trace.
Adjusts rise and fall times of Y deflection amplifier
pulse.
AlA6R9
+ 15 SV ADJ
1
AlA6R32
HV ADJUST
2
A3A8R9 FS
23
A3A8R14
ZERO
23
IF Serial Prefix 2637A and Below
Adjusts + 15 V dc supply voltage.
Adjusts CRT high voltage.
Adjusts high end of digitized sweep.
Adjusts low end of digitized sweep.
A22
A22
COARSE
FINE
12
Coarse-adjusts reference oscillator frequency.
12
Fine-adjusts reference oscillator frequency.
3-12 Adjustments