Tektronix 323, Инструкция по эксплуатации

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Calibration— Type 323
□ 13. Adjust Astigmatism (R597) Page 6-11
Best definition of marker display.
□ 14. Adjust Trace Alignment (R592) Page 6-11
Trace parallel to horizontal graticule lines.
[~1 15. Adjust CRT Geometry (R593) Page 6-11
0.1 division, or less, curvature of markers.
□ 16. Adjust Limit Centering (R66) Page 6-12
Minimum compression of a center screen two-divi­
sion signal when positioned to the top and bottom
of the graticule area. Compression or expansion
should not exceed 0.1 division.
□ 17. Adjust Vertical X I Gain (R69) Page 6-12
Five divisions of deflection at 0.01 VOLTS/DIV
with 50-millivolt square-wave input.
Q 18. Adjust Vertical X 10 Gain (R46) Page 6-12
Five divisions of deflection at 0.1 VOLTS/DIV with
X 1 0 VERT GAIN switch pulled out and a five-
millivolt square-wave input.
□ 19. Check Vertical Deflection Accuracy Page 6-12
Vertical deflection within 3% of VOLTS/DIV switch
indication.
O 20. Check Variable Volts/Division Control Page 6-12
Range
Continuously variable deflection factor between
the calibrated VOLTS/DIV steps.
f~l 21. Check Input Coupling Switch Page 6-12
Operation
Correct signal coupling in each position of the
INPUT switch.
□ 22. Check Trace Shift Due to Input Page 6-13
Current
Trace shift negligible (0.085 division maximum).
[~l 23. Check Input Capacitance Page 6-14
47 pF, z t4 pF.
□ 24. Adjust Volts/Division Compensation Page 6-14
(C23A, C23B, C24A, C24B, C25A, C25B, C28A, C28B,
C29A, C29B)
Optimum square corner and flat top within + 3 % or
—3%, or total peak-to-peak aberrations not to ex­
ceed 3% with one-kilohertz square wave.
f~l 25. Adjust Internal Trigger Compensation Page 6-15
(C201)
Optimum square-wave response similar to Fig.
6-11A through internal trigger pickoff.
□ 26. Adjust External Trigger Compensation Page 6-16
(C206)
Optimum square-wave response for external trig­
ger siqnals with EXT TRIG OR HORIZ ATTEN set
to 10X .
□ 27. Adjust High-Frequency Compensation Page 6-17
(Cl 60, Cl 70)
Optimum square-wave response at 100 kilohertz
with peak aberrations not to exceed + 2 % or —2%,
or total aberrations not to exceed 3% peak to peak.
|~] 28. Check Upper Vertical Bandwidth Limit Page 6-18
Not more than —3 dB at four megahertz.
Q 29. Check X 10 Vertical Gain Upper Page 6-18.
Bandwidth Limit
Not more than —3 dB at 2.75 megahertz.
□ 30. Check AC-Coupled Lower Vertical Page 6-17
Bandwidth Limit
Not more than —3 dB at two hertz.
O 31. Adjust Magnifier Registration (R439) Page 6-19
Less than one-division shift of marker at center
vertical line when switching X 1 0 HORIZ MAG on
(pulled out).
Q 32. Adjust Normal Timing (R401) Page 6-20
Correct timing at 1 ms/DIV over middle eight
divisions of the display.
f~1 33. Check Variable Time/Division Control Page 6-20
Range
Continuously variable sweep rate between the cal­
ibrated TIME/DIV switch settings.
□ 34. Adjust Sweep Length (R347) Page 6-20
10.5 to 11 divisions.
□ 35. Adjust Magnified Timing (R433) Page 6-20
Correct timing at 1 ms/DIV position of TIME/DIV
switch with 10X HORIZ MAG switch pulled out.
Accuracy of each ten division portion of total
magnified sweep length within 4%.
□ 36. Adjust High-Speed Timing (C446, Page 6-21
C454, C432)
Optimum linearity and timing at 10 and 5/is/D IV
positions of TIME/DIV switch (X 10 HORIZ MAG
switch pulled out).
□ 37. Check Normal Sweep Timing Accuracy Page 6-22
5 /« to ,2s/DIV, within 3% over middle eight divi­
sions of the display; .5 s and 1 s/DIV, within 4%
over middle eight divisions of the display.
□ 38. Check Magnified Sweep Timing Page 6-22
Accuracy
20 /
as
to .2 s/DIV, within 4% over middle eight divi­
sions of the CRT display with the X 10 HORIZ MAG
switch pulled out; 5 and 10 /xs/DIV and .5 and 1
s/DIV, within 5% over middle eight divisions of
the CRT display with the X 1 0 HORIZ MAG switch
pulled out.
6-3