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Performance Check/Calibration—Type 422 AC-DC
g. Change the follow ing control settings:
CH 2 Input Coupling
DC
Vertical Mode
ALG ADD
INVERT
Pulled out
h. CHECK—CRT display fo r straight line.
PERFORMANCE CHECK ONLY
Front-panel adjustment; can be adjusted as part of
performance check.
i. ADJUST—Channel 2 GAIN adjustment R180 (see Fig.
5-15) fo r straight line.
17. Check Added Mode Operation
a. Push in the INVERT switch.
b. Set the standard amplitude calibrator for a 0.12-volt
square-wave output.
c. CHECK—CRT
display for four divisions ±0.12
division of amplitude.
18. Check Channel 1 and 2 Deflection Accuracy
a. Change the following control settings:
CH 2 Input Coupling
GND
Vertical Mode
CH 1
b.
CHECK—Using the Channel 1 VO LTS/DIV switch
and standard amplitude calibrator settings given in Table
5-2, check vertical deflection w ithin 3% at each position of
the Channel 1 VO LTS/D IV switch.
TABLE 5-2
Vertical Deflection Accuracy
VO LTS/DIV
switch
setting
Standard
amplitude
calibrator
output
Vertical
deflection
in
divisions
Maximum
error
for ±3%
accuracy
(divisions)
.01
50 m illivolts
5
±0.15
.02
0.1 volt
5
±0.15
.05
Checked and adjusted in step
2
.1
0.5 volt
5
±0.15
.2
1 volt
5
±0.15
.5
2 volts
4
±0.12
1
5 volts
5
±0.15
2
10 volts
5
±0.15
2
20 volts
4
±0.12
10
50 volts
5
±0.15
20
100 volts
5
±0.15
c. Change the following control settings:
CH 1 Input Coupling
GND
CH 2 Input Coupling
DC
Vertical Mode
CH 2
d. CHECK—Using the Channel 2 VO LTS/D IV switch
and standard amplitude calibrator settings given in Table
5-2, check vertical deflection w ithin 3% at each position of
the Channel 2 VO LTS/DIV switch.
19. Check Channel 2 X 10 Gain
a. Change the following control settings:
CH 1 and 2 VO LTS/DIV
.05
X10 GAIN AC
Pulled out
b. Set the standard amplitude calibrator fo r a 20-
m illivolt square-wave output.
c. CHECK—CRT display for four divisions +0.16 d ivi
sion o f deflection (within 4%).
d. Push in the X10 GAIN AC switch.
20. Check Channel 1 and 2 Variable Volts/
Division Control Range
a. Set the standard amplitude calibrator fo r a 0.2-volt
square-wave output.
b. C H E C K -T urn the Channel 2 V A R IA B LE VO LTS/
DIV control fu lly counterclockwise. Display should be
reduced to 1.6 divisions or less (indicates adequate range
for continuously variable deflection factor between the cali
brated steps). Channel 2 UNCAL light must be on when
Channel 2 VAR IABLE control is not in CAL position.
c. Change the following control settings:
CH 1 Input Coupling
DC
Vertical Mode
CH 1
d. C H E C K -T urn the Channel 1 V A R IA B LE VO LTS/
DIV control fu lly counterclockwise. Display should be
reduced to 1.6 divisions or less (indicates adequate range
for continuously variable deflection factor between the cali
brated steps). Channel 1 UNCAL light must be on when
Channel 1 V A R IAB LE control is not in CAL position.
21. Check Low-Frequency Vertical Linearity
a. Set the standard amplitude calibrator fo r a 0.2-volt
square-wave output.
b. Position the display to the center o f the graticule
w ith the Channel 1 POSITION control.
c. Set the Channel 1 V A R IA B LE V O LT S /D IV control
fo r exactly tw o divisions of deflection (see Fig. 5-16B).
d. Position the top o f the display to the top horizontal
line of the graticule.
5-19
Summary of Contents for 422
Page 4: ...R TV 422 AC OC P o p p Type 422 AC DC ...
Page 64: ...Circuit Description Type 422 AC DC 3 26 Fig 3 15 Idealized DC DC Regulator circuit waveforms ...
Page 68: ...NOTES ...
Page 90: ...Maintenance Type 422 AC DC 4 22 Si Fig 4 14 High Voltage Rectifier Multiplier circuit board ...
Page 92: ...Maintenance Type 422 AC DC 4 24 Fig 4 16 DC Power Converter circuit board ...
Page 93: ...Maintenance Type 422 AC DC E 4 25 Fig 4 17 DC Power Control circuit board ...
Page 94: ...NOTES ...
Page 132: ...NOTES ...
Page 158: ......
Page 180: ...B U D C K D A G A N s N e o o o o u p T Y P E 4 Z 2 A C D C 0 2 foe ...
Page 187: ...T Y P E 4 1 2 A C D C l S W E E P T R I G G E R 3 s M 2 0 0 0 0 U P 1268 SWEEP TRIGGER ...
Page 191: ... H O R I Z O N T A L A M P L I F s N z o o o o u p H O R I Z O N T A L AMPLIFIER ...
Page 192: ... ...
Page 195: ...CRT CIRCUIT 10 3 f 8 OS M hS q u a gs u 0 z 3 U js o 0 1 j C V J C J u l Q ...
Page 198: ...FIG 1 FRONT TYPE 422 AC DC ...
Page 199: ...FIG 2 CHASSIS ...
Page 200: ...4 I TYPE 422 AC DC FIG 2 ...
Page 201: ...FIG 3 AC DC POWER SUPPLY s TYPE 422 AC DC FIG 3 ...
Page 205: ......