Tektronix 323, Instruction Manual

Page: 91 / 170

Calibration— Type 323
14. Calibration shield. Tektronix calibration fixture 067-
0571-00.
15. Adapter. Adapts GR874 connector to BNC male con­
nector. Tektronix Part No. 017-0063-00.
16. Termination. Impedance, 50 ohms; accuracy, ± 3 % ,
connectors, BNC. Tektronix Part No. 011-0049-00.
17. 10X attenuator. Impedance, 50 ohms; accuracy,
± 3 % ; connectors, BNC. Tektronix Part No. 011-0059-00.
18. Input RC normalizer. Time constant, 1 megohm X
47 pF; attenuation, 2 X ; connectors, BNC. Tektronix cali­
bration fixture 067-0541-00.
19. 10X probe for Type 323. Tektronix P6049 Probe rec­
ommended (supplied accessory).
20. BNC post jack. Tektronix Part No. 012-0092-00.
21. 10X probe for test oscilloscope. Tektronix P6006
Probe recommended.
22. BNC T connector. Tektronix Part No. 103-0030-00.
23. Patch cord. Length, six inches; connectors, banana
plug-jack and BNC male. Tektronix Part No. 012-0089-00
(supplied accessory).
Adjustment Tools
24. Screwdriver. Three-inch shaft, 3/ 32-inch bit for slotted
screws. Tektronix Part No. 003-0192-00.
25. Low-capacitance screwdriver. 1 ’/ 2-inch shaft. Tektronix
Part No. 003-0000-00.
SHORT-FORM CALIBRATION PROCEDURE
This short-form calibration procedure is provided to aid
in the calibration of the Type 323. It may be used as a
calibration guide by the experienced calibrator, or it may
be reproduced and used as a permanent record of cali­
bration. Since the step numbers and titles used here cor­
respond to those used in the complete procedure, this pro­
cedure also serves as an index to locate a step in the com­
plete Calibration Procedure. Performance requirements listed
here correspond to those given in Section 1 of this manual.
Type 323, Serial No. ______________________
Calibration D a t e ____________________________
Calibrated by ___ .__ _________________________
□ 1. Adjust Charging Current (R644) Page 6-6
54 millivolts, ± millivolts across R615 at FULL CHG.
Check for about 20 millivolts across R615 at TRICKLE
CHG.
|~1 2. Adjust High-Voltage Supply and Check Page 6-7
Regulation (R513)
—1900 volts, ± 3 8 volts. Must maintain this toler­
ance over DC power input range.
r~| 3. Adjust Intensity Limit (R583) Page 6-7
1.00 volt, ±0 .0 5 volt at point K on Power Regu­
lator board.
0 4. Adjust - f 5-Volt Power Supply (CAL Page 6-8
OUT Voltage) (R552)
Adjust for +0.500 volt, ± 2 .5 millivolts, at CAL
OUT jack with Q9 removed. Check for +5.0 volts,
±0.1 volt, output from supply.
1 I 5. Adjust —5-Volt Power Supply (R566) Page 6-8
—5 Volts, ±0.1 volt.
n 6. Check + 14-Volt and + 175-Volt Page 6-8
Power Supplies
+ 14-Volt Supply, ± 2 .8 volts
+ 100-Volt Supply, ± 5 Volts
+ 175-Volt Supply, + 1 4 or —7 volts.
0 7. Check Low-Voltage Power Supply Page 6-8
Ripple
Power supply
Maximum ripple over
DC power input range
-5 -V o lt
10 millivolts
+5-V olt
10 millivolts
+ 1 4-Volt 150 millivolts
+ 100-Volt
150 millivolts
+ 175-Volt 500 millivolts
0 8. Check Low-Voltage Power-Supply Page 6-8
Regulation
Power supply
Maximum output change
of supply (regulation) over
DC power input range
-5 -V o lt
±0 .0 3 volt
+5-V olf
±0.025 volt
+ 14-Volt
± 2 .8 volts
+ 100-Volt ± 5 .0 volts
+ 175-Volt
± 1 4 volts
0 9. Check Low Batteries Indicator Page 6-9
LOW BATT light flashes with DC input voltage
of 6.25 volts, ±0.31 volt.
□ 10. Adjust Variable Volts/Division Page 6-9
Balance (R40)
Less than one division vertical trace shift as the
VARIABLE VOLTS/DIV control is rotated through­
out its range.
0 11. Adjust Vertical X 10 Balance (R39) Page 6-9
Less than 1.5 division vertical trace shift as the
X 1 0 VERT GAIN switch is pulled out.
0 12. Adjust Deflection Plate DC level (R91, Page 6-9
R93)
Voltage range at the collectors of Q163 and Q173
as the vertical POSITION control is rotated through­
out its range centered about + 5 0 volts.
6-2
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