Adjustment Procedure— 2236 Service
TRIGGER
Equipment Required (see Table 4-1):
Leveled Sine-Wave Generator (Item 2)
Digital Voltmeter (Item 22)
50-fi BNC Cable (Item 8)
Screwdriver (Item 25)
50-Si BNC Termination (Item 9)
See
ADJUSTMENT LOCATIONS 1
and
ADJUSTMENT LOCATIONS 3
a t the back o f the m anual fo r
test p o in t and adjustm ent locations.
INITIAL CONTROL SETTINGS
PROCEDURE STEPS
Vertical (Both Channels)
1. Adjust Internal and External Trigger Offset (R309
POSITION
Midrange
and R387)
VERTICAL MODE
BOTH-ALT
a. Set the Channel 1 trace and the Channel 2 trace to the
BW LIMIT
Off (button out)
center horizontal graticule line using the Channel 1 and
VOLTS/DIV (both)
0.5 V
Channel 2 POSITION controls.
VOLTS/DIV Variable
CAL detent
INVERT
Off (button out)
Input Coupling (both)
GND
b. Connect the digital voltmeter low lead to chassis
ground and the high (volts) lead to TP460 (Alt Sweep Logic
circuit board connector to the Main circuit board).
Horizontal
POSITION
Midrange
c. CHECK—The offset voltage reading is less than 80
HORIZONTAL MODE
A
mV. Note the reading for use in part e.
A and B SEC/DIV
1 ms
SEC/DIV Variable
CAL detent
X I0 Magnifier
Off (knob in)
d. Set the A&B INT switch to CH 1.
B DELAY TIME POSITION
Fully counterclockwise
e. ADJUST— Trigger Offset (R309) so that the voltage
reading is the same as that obtained in part c.
B TRIGGER
SLOPE
OUT
f. Set the A&B INT switch to CH 2.
LEVEL
A TRIGGER
Midrange
g. Repeat parts c through f until there is 1 mV or less
difference in the voltmeter readings between the CH 1 and
CH 2 positions of the A&B INT switch.
VAR HOLDOFF
NORM
Mode
P-P AUTO
SLOPE
OUT
h. Set the A SOURCE switch to EXT.
LEVEL
Midrange
A&B INT
CH 2
A SOURCE
INT
i. ADJUST— Ext Trig Offset (R387) for the same voltage
A EXT COUPLING
DC
reading as in part g.
5-20
REV JAN 1985
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 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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