Tektronix 323, Инструкция по эксплуатации

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Performance Check— Type 3 2 3
35.
Check Low-Frequency Reject O pe ra tio n
REQUIREMENT—Stable display with 0.3-division display
at 30 kilohertz with the TRIGGER control set to + and —
AUTO and in the variable positive and negative slope
areas; stable display cannot be obtained at 30 hertz.
a. Change the following control settings:
Trig/Horiz Coupling INT TRIG ACLF REJ
TIME/DIV .1 ms
b. Set the low-frequency generator for a 0.3-division dis­
play at 30 kilohertz.
c. CHECK— Stable CRT display can be obtained with the
TRIGGER control set to + and — AUTO and in the vari­
able positive and negative slope areas (adjust as neces­
sary).
d. Without changing the output amplitude, set the low-
frequency generator to 30 hertz.
e. Set the TIME/DIV switch to 10 ms.
f. CHECK— Stable CRT display cannot be obtained at
any setting of the TRIGGER control.
36.
Check T rigg e r Slope O p e ra tio n
REQUIREMENT— Stable triggering on correct slope of
trigger signal in the + AUTO, variable positive-slope area,
variable negative-slope area and — AUTO positions of the
TRIGGER control.
a. Change the following control settings:
TRIGGER + AUTO
Trig/Horiz Coupling INT TRIG AC
TIME/DIV .5 ms
b. Set the low-frequency generator for a four-division
display at one kilohertz.
c. CHECK— CRT display starts on the positive slope of
the waveform.
d. Turn the TRIGGER control clockwise until a stable dis­
play is obtained in the positive-slope area.
e. CHECK— CRT display starts on the positive slope of
the waveform.
a. Remove the 50-ohm BNC termination and reconnect
the low frequency sine-wave generator to the BNC T con­
nector through the 42-inch BNC cable.
b. Change the following control settings:
VOLTS/DIV .5
TRIGGER + AUTO
Trig/Horiz Coupling EXT TRIG AC
c. Set the low-frequency generator for a 3.2-division
display (1.6 volts peak to peak) at one kilohertz.
d. CHECK— Rotate the TRIGGER control throughout the
positive-slope area and check that the display can be trig­
gered (stable display) at any point along the positive slope
of the waveform (indicates TRIGGER control range of at
least + and — 0.8 volt). Display is not triggered at either
extreme of the positive-slope area except in + AUTO de­
tent.
e. CHECK— Rotate the TRIGGER control throughout the
negative-slope area and check that the display can be trig­
gered at any point along the negative slope of the wave­
form. Display is not triggered at either extreme of the
negative-slope area except in the — AUTO detent.
f. Change the following control settings:
VOLTS/DIV 5
TRIGGER + AUTO
EXT TRIG OR 10X
HORIZ ATTEN
g. Set the low-frequency generator for a 3.2-division
display (16 volts peak to peak) at one kilohertz.
h. CHECK— Rotate the TRIGGER control throughout the
positive-slope area and check that the display can be trig­
gered at any point along the positive slope of the wave-
from. Display is not triggered at either extreme of the posi­
tive-slope area except in + AUTO detent.
i. CHECK— Rotate the TRIGGER control throughout the
negative-slope area and check that the display can be trig­
gered at any point along the negative slope of the wave­
form. Display is not triggered at either extreme of the neg­
ative-slope area except in — AUTO detent.
j. Disconnect all test equipment.
38. Check Calibrator Risetime
f. Turn the TRIGGER control clockwise until a stable
display is obtained in the negative-slope area.
g. CHECK— CRT display starts on the negative slope of
the waveform.
h. Set the TRIGGER control to — AUTO.
i. CHECK— CRT display starts on the negative slope of
the waveform.
3 7 . Check TRIGGER Control Range
REQUIREMENT— EXT TRIG OR HORIZ ATTEN switch set
to I X , at least + and — 0.8 volts,- EXT TRIG OR HORIZ
ATTEN switch set to 10X, at least + and — 8 volts.
REQUIREMENT—Two microseconds or less.
a. Change the following control settings:
VOLTS/DIV
TRIGGER
Trig/Horiz Coupling
TIME/DIV
X I0 HORIZ MAG
5 DIV CAL
- AUTO
INT TRIG AC
.1 ms
Pulled out
b. Position the rising portion of the waveform onto the
viewing area with the horizontal POSITION control and
center the display with the vertical POSITION control.
c. CHECK— CRT display for 0.2 division or less horizontal
distance between the 10% and 90% points on the lead-
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