Tektronix 422 - SHORT-FORM PROCEDURE

Performance Check/Calibration—Type 422 AC-DC
SHORT-FORM PROCEDURE
Type 422, Serial No. _______________
Calibration D ate -------------------------------
Calibrated B y ------------------------------------
1. Adjust -12-Volt Power Supply (R1130) Page 5-9
REQUIREMENT: -1 2 volts ±0.12 volt.
PERFORMANCE: -1 2 volts ± _____vo lt
2. Adjust Blocking Oscillator Frequency Page 5-9
(R1125)
REQUIREMENT: Correct oscillator frequency; see
complete procedure.
PERFORMANCE: Correct ___ ; incorrect ____ .
3. Check DC Regulation Page 5-10
Supply
REQUIREMENT:
PERFORMANCE:
+10.5 volt
+10.3 to +10.7 volts
volts
-1 2 volt
-11.9 to -12.1 volts
volts
+12 volt
+11.7 to +12.3 volts
vblts
+55 volt
+53.9 to +56.7 volts
volts
+95 volt +93.7 to +97.9 volts
volts
—81 volt —80 to —82 volts
volts
4 Check DC Ripple
Page 5-11
Supply
REQUIREMENT:
(maximum)
PERFORMANCE:
-1 2 volt
20 millivolts
millivolts
+12 volt
20 millivolts
millivolts
+55 volt
0.32 volt
volt
+95 volt
0.4 volt
volt
+10.5 volt
1 millivolt
millivolt
—81 volt
20 millivolts
millivolts
5. Adjust Low-Voltage Indicator (R1047) Page 5-12
REQUIREMENT: Power light begins to blink with DC
input voltage of 22 volts +0, —1 volt.
PERFORMANCE: Correct ___ ; incorrect ____
6. Check AC Operation Page 5-12
Output voltage
Supply
REQUIREMENT:
PERFORMANCE:
-1 2 volt
—11.9 to —12.1 volts
volts
+12 volt +11.7 to +12.3 volts
volts
+55 volt
+53.9 to +56.7 volts
volts
+95 volt
+93.7 to +97.9 volts
volts
+10.5 volt +10.3 to +10.7 volts volts
—81 volt
—80 to —82 volts
volts
Ripple
Supply
REQUIREMENT:
(maximum)
PERFORMANCE:
-1 2 volt
8 millivolts
millivolts
+12 volt
8 millivolts
millivolts
+10.5 volt 1 millivolt
millivolt
—81 volt
8 millivolts
millivolts
7. Check Battery Charger Operation Page 5-13
REQUIREMENT:
CHARGE BATT 115V AC; 95-volt line, 325
milliamperes minimum. 126.5-volt line, 450 milliamperes
maximum.
OPERATE 115V AC; 95-and 126.5 volt line, 30 to 50
milliamperes.
PERFORMANCE:
CHARGE BATT 115V AC; 95-volt line, ____ milli-
amperes. 126.5-volt line, ------- milliamperes.
OPERATE 115V AC; 95- and 126.5-volt line,
-------- and -------- milliamperes.
8. Check High-Voltage Supply Page 5-13
REQUIREMENT: -1385 volts ±69.5 volts.
PERFORMANCE: -1385 v o lts ± ____ volts.
9. Adjust unblanking Center (R869) Page 5-13
REQUIREMENT: Maximum trace intensity.
PERFORMANCE: Correct ------- ; incorrect----------
10. Check/Adjust Trace Rotation (R851) Page 5-13
REQUIREMENT: Trace parallel to center horizontal iine
within 0.1 division/10 divisions.
PERFORMANCE: W ithin ____ division.
11. Check/Adjust Y Axis Alignment (R856) Page 5-14
REQUIREMENT: Markers parallel to the center vertical
line within 0.1 division.
PERFORMANCE: W ithin ------ division.
12. Check/Adjust CRT Geometry (R854) Page 5-15
REQUIREMENT: Bowing of markers at left and right
edges of graticule within 0.1 division. Trace parallel to the
top and bottom horizontal lines of the graticule within 0.1
division.
PERFORMANCE: Left and right edges within
division; top and bottom w ithin ____ division.
H i
5-3