Tektronix 323, Инструкция по эксплуатации

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Performance Check— Type 323
b. Connect the standard amplitude calibrator (067-0502-
00) output connector to the VERT INPUT connector with the
42-inch BNC cable.
c. Set the standard amplitude calibrator for a 50-millivolt
square-wave output.
d. CHECK— CRT display for five divisions of deflection.
e. If necessary, adjust the VERT X I GAIN adjustment
(on bottom) for exactly five divisions of deflection.
9. Check V ertical X l O G ain
REQUIREMENT— Five divisions of deflection at 0.01
VOLTS/DIV with X lO VERT GAIN switch pulled out and
a five-millivolt square-wave input.
a. Set the standard amplitude calibrator for a five-milli­
volt square-wave output.
b. Pull the X lO VERT GAIN switch.
c. CHECK—CRT display for five divisions of deflection.
d. If necessary, adjust the VERT X lO GAIN adjustment
(on bottom) for exactly five divisions of deflection.
10. Check V ertical D eflection Accuracy
REQUIREMENT—Vertical deflection within 3% of VOLTS/
DIV switch indication.
a. Push the X lO VERT GAIN switch in.
b. CHECK— Using the VOLTS/DIV switch and standard
amplitude calibrator settings given in Table 5-1, check ver­
tical deflection within 3% in each position of the VOLTS/
DIV switch.
11. Check V a ria b le V o lts /D iv is io n C ontrol
Range
REQUIREMENT— Continuously variable deflection factor
between the calibrated VOLTS/DIV steps.
a. Set the standard amplitude calibrator for a 50-milli­
volt square-wave output.
b. Change the following control settings:
VOLTS/DIV .01
INPUT AC
c. Center the display about the center horizontal line
with the vertical POSITION control.
d. CHECK— Rotate the VARIABLE VOLTS/DIV control fully
counterclockwise. Display must be reduced to two divisions
or less (indicates adequate range for continuously variable
deflection factor between the calibrated steps.)
12. Check Input Coupling Switch Operation
REQUIREMENT— Correct signal coupling in each position
of the INPUT switch.
a. Set the VARIABLE VOLTS/DIV control to CAL.
b. Set the standard amplitude calibrator for a 20-milli­
volt square-wave output.
c. Center the display about the center horizontal line
with the vertical POSITION control.
d. Set the INPUT switch to GND.
e. CHECK— CRT display for straight line near the center
horizontal line.
f. Set the INPUT switch to DC.
g. CHECK— CRT display for square wave with the bottom
near the center horizontal line.
h. Disconnect all test equipment.
13. Check Trace Shift Due To Input Current
REQUIREMENT—Trace shift neglible (0.085 division max­
imum).
TABLE 5-1
Vertical Deflection Accuracy
VOLTS/DIV
switch
setting
Standard
amplitude
calibrator output
Vertical
deflection
in divisions
Maximum Error
fo r ± 3 % accuracy
(divisions)
.01
50 millivolts
5 Previously set exactly in
step 9
.02
0.1 volt
5 ±0 .1 5
.05
0.2 volt
4 ±0 .1 2
.1
0.5 volt
5 ±0.15
.2
1 volt
5 ±0 .1 5
.5
2 volts 4
±0.12
1
5 volts
5 ±0.15
2
10
volts 5
±0.15
5
20 volts 4
±0.12
10
50
volts 5
±0.15
20
100 volts 5
±0 .1 5
5-4
®