Tektronix 5D10 Service Manual page 176

Calibration Part II-5D10 Volume 1
Adjustment and Performance Check
d . Set the TRIGGERING SLOPE to \ (pushbutton in), and
the POSITION to CTR TRIG .
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e . CHECK--the green Ti indicator light remains on,
and the intensified dot (triggering point) is displayed on
the falling
edge of the waveform at the approximate
horizontal
center of the screen .
II~IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII IIIIIIIIIIIIIIIIIIIIIIIIIIIIIII!11111111111111111111111111111111111111111111111111111IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
f . Set the TRIGGERING POSITION to
POST TRIG, the
SLOPE to EII-SLOPE (both buttons pressed in), and the
TRIGGERING
COUPLING to AC (button pressed in) .
g . Rotate the TRIGGERING
SENSITIVITY control to the
MAX position .
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h . CHECK--the green TRIG'D indicator light remains on,
the
intensified dot (triggering point) is displayed
approximately 1 .25 divisions in from the left side of the
screen, and the intensified clot may occur on either the
rising or failing edge of the waveform .
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i . Set the TRIGGERING POSITION to FREE RUN .
111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111 1 11111111111111111111111111111111111111111111111111111111111
j . CHECK--the green Ti indicator light remains on
and the signal display is free-running (not triggered) .
1111111!I!II!IIIIIIIIPIIIIIIIIIIIII IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII111111!111111!IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
k .
Press the STORAGE SAVE button in .
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I . CHECK--that the intensified dot (triggering point) is
displayed at the end of the trace (right side of screen) .
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m . Release the STORAGE :SAVE button .
n . Set the TRIGGERING POSITION to CTR TRIG .
o . Set the CH 1
VOLTS/DIV switch to 0.1 .
p . Rotate tr e TRIGGERING LEVEL control fully clockwise .
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q . CHECK-that the display is not triggered .
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r . Set the TRIGGERING SLOPE to / (button in) .
i l I i I I
IIIIL I III L
.
I 1
I .I I I I I I I IILII
111111111111111!1 1 1111111111 ,IIIIII IJIIIi 1 1
III I i L I I III~ IIIIIJJ
IIU1111 1 111111 1 1111~I1111111111'I ;ill 111 1 1111111111 LIILIJII L IIIIIIIIIIIIIIIIII LII II
s . CHECK-rotate
the TRIGGERING LEVEL control
through
its range and check that the trace is not
triggered at the fully
clockwise and counterclockwise
position of the TRIGGERING LEVEL control .
IIIIIIIIIIPII'IIIIIIIIII~IPIIII1111111ill1111111111111111111111111111111ill1111111ill111111111111111!111111111111111111111i11!Illllllllllli!III!IIIIIIIIIIIIIIIIIIIIIIIIIIIIVIII
5-58
t . Set the TRIGGERING SLOII to
\ (button in) .
IlllilllllllllllIIIIIIIIIIIIII~IIIIIIIIIRIIIPIIIIIPIIIPIIIIIPIIIIIIIIIIIIIIUII'IIIIIIIPIIIIIINIIIIUI'1111!IIIUI!PI'II i IIIIIIIIIPIIIIIIIPIIIIIIIIIIIIII!IIII~PI'lllllll
u . CHECK-rotate
the TRIGGERING
LEVEL control
through it's range and
check that the trace is not
triggered at the
fully clockwise and counterclockwise
position of the TRIGGERING LEVEL control .
1111111111111111111111111111111111111111 IIII 1111111111111111111 !1111111111 IIIIIIIIIIIIIIIIIII Ill1111IIIIII111111111111111111111111111111111111111111111111 1 lllllll11111111111 11 1
E3 .
CHECK TRIGGERING
SENSITIVITY
AND
GROUND-REFERENCE
UPDATE
NOTE
If the preceding step was not performed, first
perform step El, then proceed.
5D10 Controls :
TRIGGERING
POSITION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CTR TRIG
COUPLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AC (pressed in)
SECONDS/DIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 m
VOLTS/DIV (CH 1 and CH 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1
Oscilloscope
Dual-Input
Mainframe
Coupler
E3 . SETUP CONDITIONS
Low-Frequency
Oscillator
I
Si
newave ' l /
1
Output \ /
Coaxial
able
Test Equipment Controls :
Low-Frequency Oscillator
Frequency Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Multiplier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X10K
Step Attenuator . . . . . . . . . . . . . . . .10 and 20 (pressed in)
d . Set the ACQUISITION AND DISPLAY to CH 2-
e .
Set the TRIGGERING
SOURCE to CH 2 .
a .
Set the low-frequency oscillator to display a signal
amplitude of 0.4 division at 50 kHz .
b .
Rotate the TRIGGERING
LEVEL control for a stable
display .
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c . CHECK-that a stable display can be obtained in both
/ SLOPE and \
SLOPE .
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