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Performance Check/Calibration—Type 422 AC-DC
TABLE 5-4
Channel 2 VO LTS/DIV Switch Compensation
Channel 2
Adjusted fo r optimum
VO LTS/DIV
Attenuator
Switch setting
compensated
Square corner
Flat top
.05
+ 1
C l 12
.02
Check
If out o f tolerance.
.01
Check
com prom ise setting
at .01, .02 and .05
fo r best overall re-
sponse.
Remove external 10X attenuator from generator
.1
- 2
C103C
C103B
.2
- 4
C104C
C104B
.5
- 10
C105C
C105B
Remove 50-ohm termination
1
Check
If out o f tolerance,
com prom ise setting
at .5, 1 and 2 fo r best
overall response.
2
Check
5
+100
C106C
C106B
10
Check
If out of tolerance,
com prom ise setting
at 5, 10 and 20 for
best overall response.
20
Check
c. Set the square-wave generator fo r a five-division dis
play at 100 kilohertz in the fast-rise mode.
d. CHECK—CRT display fo r optim um square-wave
response w ith aberrations not to exceed +0.15 or —0.15
division, w ith total peak-to-peak aberrations not to exceed
0.15 division (within +3% or —3% w ith total peak-to-peak
aberrations w ithin 3%; (see Fig. 5-18A).
e. ADJUST—R237, C237, L245 and L255 in given
o rd e r f o r optim um square-wave response (use low-
capacitance screwdriver for C237 and tuning tool for
L245-L255). Fig. 5-18B shows the location o f these adjust
ments; L245 and L255 can be adjusted through the access
holes in the rear panel o f the indicator. Since these adjust
m en ts in te ra c t, readjust until optimum square-wave
response is obtained.
f. Set the vertical Mode switch to CH 2.
g. Connect the square-wave generator fast-rise + output
connector to the INPUT 2 connector through the GR to
BNC adapter, 18-inch 50-ohm BNC cable and the 50-ohm
BNC termination.
h. Set the square-wave generator for a five-division dis
play at 100 kilohertz in the fast-rise mode.
i. CHECK—CRT display fo r optimum square-wave
response similar to Channel 1 response.
j. ADJUST—If necessary, compromise the adjustment of
R237, C237, L245 and L255 fo r best response for both
checks d and i.
k. Disconnect all test equipment.
28. Check Upper Vertical Bandwidth Lim it of
Channel 1 and 2
a. Change the follow ing control settings:
r
/
L245
R237
Delay Line Comp
C237
R
Freq Comp
it
Fig. 5-18. (A) Typical CRT display showing correct high-frequency
compensation, (B)
location of high-frequency compensation
adjustments (Vertical Switching and Output Amplifier board).
5-23
Содержание 422
Страница 4: ...R TV 422 AC OC P o p p Type 422 AC DC ...
Страница 40: ...Fig 3 1 Basic block diagram of Type 422 with AC DC Power Supply W I 1SJ a Circuit Description Type 422 AC DC ...
Страница 64: ...Circuit Description Type 422 AC DC 3 26 Fig 3 15 Idealized DC DC Regulator circuit waveforms ...
Страница 68: ...NOTES ...
Страница 75: ...I 1 Fig 4 4 Troubleshooting chart for Type 422 with AC DC Power Supply Maintenance Type 422 AC DC ...
Страница 90: ...Maintenance Type 422 AC DC 4 22 Si Fig 4 14 High Voltage Rectifier Multiplier circuit board ...
Страница 92: ...Maintenance Type 422 AC DC 4 24 Fig 4 16 DC Power Converter circuit board ...
Страница 93: ...Maintenance Type 422 AC DC E 4 25 Fig 4 17 DC Power Control circuit board ...
Страница 94: ...NOTES ...
Страница 132: ...NOTES ...
Страница 158: ......
Страница 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 ...
Страница 186: ...zv div 0 V E R T I C A L S W I T C H I N G O U T P U T A M P L I F I E R s N e q o o o up T Y P t 2 a AC DG ...
Страница 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 ...
Страница 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 ...
Страница 192: ... ...
Страница 193: ...II CAL R EG 0670 C A L I B R A T O R R E G U L A T O R S S N Z fOOO U P T Y P t 4 2 2 AC D C a CALIBRATOR REGULATOR ...
Страница 194: ... 0 6 7 0 C A L I B R A T O R R E G U L A T O R S J S N 20 000 ll 9 9 9 TYPfe 2 AC DC CALIBRATOR REGULATOR ...
Страница 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 ...
Страница 196: ... J T Y P t 4 Z 2 A C D C 0 A C D C P O W t R Ed L CTO R 11 s N e o o o o u p v AC DC POWER SELECTOR ...
Страница 198: ...FIG 1 FRONT TYPE 422 AC DC ...
Страница 199: ...FIG 2 CHASSIS ...
Страница 200: ...4 I TYPE 422 AC DC FIG 2 ...
Страница 201: ...FIG 3 AC DC POWER SUPPLY s TYPE 422 AC DC FIG 3 ...
Страница 205: ......