Performance CheckICalibration-314 Service
VERTICAL SYSTEM
Equipment Required
1. Constant Amplitude Signal Generator
2. Test Oscilloscope
3.
10X Probe
4. Digital Voltmeter
5. Square-Wave Generator
6.
Calibration Shield
7. 50-ohm BNC Cable
8.
50-ohm BNC Termination
9.
lox, 50-ohm BNC Attenuator
10. 2X, 50-ohm BNC Attenuator
11. Dual
lnput Cable
12. 47 pF Normalizer
13. Low Capacitance Screwdriver
See
Control Settings
INTENSITY
POWER
FOCUS
CH 1 and CH
2
VARIABLE
POSITION
lnput Coupling
VOLTS/DIV
DISPLAY
CH
2
INVERT
TRIGGERING
LEVEL
SLOPE
Coupling
Source
Mode
TIME/DIV
Variable
Horizontal POSITION
SWEEP MAG
STORAGE
STORE
ENHANCE
AUTO ERASE
ENHANCE LEVEL
VIEWING
TIME
EXT ATTEN
ADJmTMENY
LOCAllQMS
in the pullout Diagrams section
midrange
on
midrange
CA
L
midrange
GND
10 m
CH 1
out
midrange
+
AC
I NT
AUTO
1 ms
CAL
midrange
X 1
out
out
out
CCW
CCW
X 1
1.
Adjust CH 1 Step Atten Balance and VoltsIDiv
Balance
a. Using CH 1 POSITION control, position trace to
graticule center (adjust INTENSITY and FOCUS as
necessary).
b. Switch CH 1
VOLTS/DIV to 5 m.
c. ADJUST-R27 (see Fig. 7-4), Step
Atten Bal, to
position trace to
graticule center.
d. Switch CH 1
VOLTS/DIV to 10 m and repeat parts a
through c until there is no shift when switching between
10 m and 5 m.
e. Rotate
VOLTS/DIV VARIABLE throughout its
range.
f. ADJUST4331 (see Fig. 7-4), Var Bal, until there is
no trace shift while rotating VARIABLE from fully
counterclockwise to fully clockwise.
g. INTERACTION-it may be necessary to repeat
parts a through f because of some interaction between
Step Atten Bal and VARIABLE controls. Return CH 1
VARIABLE to CAL.
2.
Adjust
CH
2
Step Atten Balance and VoltsIDiv
Balance
a. Reset DISPLAY to CH 2.
b. Using CH 2 POSITION control, position trace to
graticule center.
c. Switch CH
2
VOLTS/DIV to 5 m.
d. ADJUST4367 (see Fig. 7-4), Step Atten Bal, to
position trace to graticule center.
REV.
A,
AUG.
1975
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