Adjustment Procedure— 2236 Service
2. Adjust Trigger Sensitivity (R479 and R627)
a. Set:
VERTICAL MODE
CH 1
CH 1 VOLTS/DIV
0.1 V
Input Coupling (both)
AC
ASEC/DIV
10
ms
A SOURCE
INT
b. Connect the leveled sine-wave generator output via a
50-fl cable and a 50-fl termination to the CH 1 OR X input
connector.
c. Set the generator to produce a 50-kHz, 2.6-division
display.
d. Set the CH 1 VOLTS/DIV switch to 1 V.
e. ADJUST— A Trigger Sensitivity (R479) while rotating
the A TRIGGER LEVEL control slowly so that the A Trigger
is just able to be maintained.
f. Adjust the A TRIGGER LEVEL control for a stable
display.
g. Set the HORIZONTAL MODE switch to B.
h. ADJUST— B Trigger Sensitivity (R627) while rotating
the B TRIGGER LEVEL control slowly so that the B Trigger
is just able to be maintained.
3. Adjust Slope Balance (R471)
a. Set:
CH 1 VOLTS/DIV
50 mV
HORIZONTAL MODE
A
b. Set the generator to produce a 4-division display.
c. ADJUST— Slope Bal (R471) for a downward vertical
shift of 0.22 division at the start of the sweep when chang
ing the A TRIGGER SLOPE switch between the OUT and IN
positions.
4. Adjust P-P Auto Trigger Centering (R434 and
R435)
a. Set:
A TRIGGER SLOPE
OUT
A TRIGGER LEVEL
Fully clockwise
b. Set the generator to produce a 50-kHz, 5-division
display.
c. Set the CH 1 VOLTS/DIV switch to 0.5 V.
d. ADJUST— (+ ) Auto (R434) so that the vertical display
just solidly triggers on the positive peak of the signal.
e. Set:
A TRIGGER SLOPE
IN
A TRIGGER LEVEL
Fully counterclockwise
f. ADJUST— (—) Auto (R435) so that the display just sol
idly triggers on the negative peak of the signal.
5. Check Internal Triggering
a. Set:
VOLTS/DIV (both)
50 mV
A SEC/DIV
0.1
ms
b. Select the FREQ function.
c. Connect the leveled sine-wave generator output via a
50-fi cable and a 50-Q termination to the CH 1 OR X input
connector.
d. Set the generator to produce a 10-MHz, 3.5-division
display.
e. Set the CH 1 VOLTS/DIV switch to 0.5 V.
f. CHECK— Stable display can be obtained by adjusting
the A TRIGGER LEVEL control for each switch combination
given in Table 5-6.
5-21
Содержание 2236
Страница 10: ...2236 Service viii The 2236 Oscilloscope ...
Страница 28: ...Specification 2236 Service 1 18 ADD JAN 1985 Figure 1 2 Physical dimensions of the 2236 Oscilloscope ...
Страница 74: ...Theory of Operation 2236 Service 3 30 ...
Страница 75: ...Theory of Operation 2236 Service Figure 3 13 Typical waveforms for the Delta Time function with Valt HI 3 31 ...
Страница 102: ...Performance Check Procedure 2236 Service 4 21 Figure 4 1 Test setup for DMM common mode check ...
Страница 240: ...2236 Service CTM INTERFACE SIGNALS F ig u re 9 4 O s c illo s c o p e b a sic b lo c k diag ram 4294 46 ...
Страница 241: ... VERT DEFL 2236 Service 4 2 0 6 3 5 4 2 0 4 4 7 F ig u re 9 5 O scillo sco p e d e ta ile d b lo c k diag ram ...
Страница 242: ...2236 Service 4204 34 Figure 9 6 CTM basic block diagram ...
Страница 243: ...DMM POWER S U P P LIE S 2236 Service F ig u re 9 7 C T M d e ta ile d b lo c k diag ram ...
Страница 253: ...A10 COUNTER TIMER MULTIMETER BOARD F ig u re 9 8 C irc u it b o a rd lo c a tio n Illu s tra tio n ...
Страница 254: ...S I 0 O I 5 1 S O i 4204 21 C IR C U IT BOARD INTERCONNECTIONS ...
Страница 255: ...2 2 3 6 S e rv ic e A ll c o m p o n e n ts on th e A 2 A tte n u a to r b o a rd are lo c a te d on D ia g r a m ...
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Страница 313: ...2236 Service T O U I 3 0 0 4 8 K T O UI300 II S K 0 2 2 3 6 Z Z O A Z 2 OPTION IA ...
Страница 317: ...A 10 C O U N T E R T IM E R M U L T IM E T E R B O A R D A D J U S T M E N T LO C A T IO N S ...
Страница 319: ...2236 Service TROUBLESHOOTING GUIDE 4206 99 4204 69A ...
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Страница 324: ...2 REV APR 1986 ...
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