f. Set the VERTICAL MODE switch to CH 2.
g. Repeats parts a through e for Channel 2, adjusting
Step Attn Bal (R60) in part c.
2. Adjust 2/5 mV DC Balance (R83 and R33)
a. Set the CH 2 VOLTS/DIV switch to 5 mV.
b.
Position the trace on the center horizontal graticule
line using the Channel 2 POSITION control.
c. Set the CH 2 VOLTS/DIV switch to 2 mV.
d.
ADJUST—2/5 mV Dc Bal (R83) to set the trace on
the center horizontal graticule line.
e. Repeat parts a through d until there is no trace shift
when changing the CH 2 VOLTS/DIV switch from 5 mV to
2 mV.
f. Set the VERTICAL MODE switch to CH 1.
g.
Repeat parts a through e for Channel 1, adjusting
2/5 mV Dc Bal (R33) in part d.
3. Adjust Channel 1 Variable Balance (R25)
a. Set both VOLTS/DIV switches to 2 mV.
b. Rotate the CH 1 VOLTS/DIV Variable control fully
counterclockwise.
c. Position the trace on the center horizontal graticule
line using the Channel 1 POSITION control.
d. Rotate the CH 1 VOLTS/DIV Variable control clock
wise to the CAL detent.
e. ADJUST—Var Bal (R25) to set the trace to the
center horizontal graticule line.
f.
Repeat parts b through e until there is no trace shift
between the fully clockwise and the fully counterclockwise
positions of the CH 1 VOLTS/DIV Variable control.
g.
Return the CH 1 VOLTS/DIV Variable control to the
CAL detent.
Adjustment Procedure— 2230 Service
4. Adjust Channel 2 Invert Balance (R75)
a. Set the VERTICAL MODE switch to CH 2.
b. Position the trace on the center horizontal graticule
line using the Channel 2 POSITION control.
c. Set the INVERT button to On (button in).
d. ADJUST—Invert Bal (R75) to set the trace to the
center horizontal graticule line.
e. Set the INVERT button to Off (button out).
f.
Repeat parts b through e until there is no trace shift
when switching the INVERT button between the On and
Off positions.
5. Adjust MF/LF Compensation and Gain Balance
(C53, R97, C3, and R47)
a. Set:
A SEC/DIV
20
fiS
b. Connect the high-amplitude square wave output via
a 50
cable, a 10X attenuator, and a 50 Q termination to
the CH 2 OR Y input connector.
c.
Set the generator to produce a 10 kHz, 5-division
display.
d.
Set the top of the display on the center horizontal
graticule line using the Channel 2 POSITION control.
e.
ADJUST— MF/LF Comp (C53) and MF/LF Gain Bal
(R97) for the best front comer and flat top.
f.
Move the cable from the CH 2 OR Y input connector
to the CH 1 OR X input connector. Set the VERTICAL
MODE switch to CH 1.
g.
Set the top of the display on the center horizontal
graticule line using the Channel 1 POSITION control.
5-7
Summary of Contents for 2230
Page 12: ...2230 Service X The 2230 Digital Storage Oscilloscope 4998 01 ...
Page 33: ...Operating Information 2230 Service Figure 2 5 Vertical controls and connectors 2 6 ...
Page 48: ...Operating Information 2230 Service Figure 2 11 X Y Plotter interfacing ...
Page 56: ...Theory of Operation 2230 Service 4999 01 3 2 Figure 3 1 Simplified block diagram ...
Page 68: ...Operating Information 2230 Service Figure 2 11 X Y Plotter interfacing ...
Page 76: ...Theory of Operation 2230 Service 4999 01 3 2 Figure 3 1 Simplified block diagram ...
Page 98: ...Theory of Operation 2230 Service 499 9 06 Figure 3 6 Horizontal Amplifier block diagram 3 24 ...
Page 111: ...Theory of Operation 2230 Service 3 37 Figure 3 9 Acquisition Memory timing ...
Page 190: ...Maintenance 2230 Service 999 14 Figure 6 3 Isolated kernel timing 6 9 ...
Page 329: ...PUT Figure 9 2 S em ico n d u cto r lea d co n fig u ratio n s ...
Page 332: ...2230Service CHASSIS MOUNTED PARTS ...
Page 334: ...A14 CH 1 LOGIC BOARD ...
Page 337: ......
Page 344: ...u sr z z o 1 ...
Page 347: ...i n 5 a O Q q o u S a o h UJ s a b c d e f g h j k l m n ...
Page 352: ......
Page 355: ...WAVEFORMS FOR DIAGRAM 5 4999 83 ...
Page 358: ...I W L U O U rc a 4 2 s ...
Page 361: ...WAVEFORMS FOR DIAGRAM 6 S 84 ...
Page 362: ...2230 Service TEST SCOPE TRIGGERED ON U665 PIN 8 FOR WAVEFORMS 31 THROUGH 33 ...
Page 365: ... I I ...
Page 366: ...A 1 6 S W E E P R EFEREN CE BOARD FIG 9 17 2230 Service Figure 9 17 A16 Sweep Reference board ...
Page 369: ... o 0 UJU sa eg aiu c u J in su eg 5 C sis n g e s o N QO ...
Page 371: ...Static Sensitive Devices See Maintenance Section CM I rv CD o 2230 Service ...
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Page 384: ... I I c o C u o a 5 r O tD v j If 3 IV if I I ci if 5 3 I ...
Page 386: ......
Page 388: ...H K L M N 7 8 8 2 2 3 0 INPUT OUTFUT WIRING INTERCONNECT ...
Page 392: ...W A V E F O R M S F O R D IA G R A M 14 ...
Page 393: ...2230Service 0 0 d s t 4 9 9 9 9 5 ...
Page 394: ...2230 Service TEST SCOPE TRIGGERED ON U911 PIN 21 FOR WAVEFORMS 64 THROUGH 69 4999 92 ...
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Page 397: ...WAVEFORMS FOR DIAGRAM 15 TEST SCOPE TRIGGERED ON U9111 PIN 21 FOR WAVEFORMS 70 THROUGH 77 ...
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Page 415: ...IMF PU TPR A IR TM FQ U I W A V E F O R M SF O RO IA G R A M1 5 W A V E F O R M SF O R i ...
Page 417: ...4999 9S ...
Page 419: ...i s 5 0 C C p F 2 CC p 2 a u 4 I s c c O 2 e e o 5 a o 5 i 2 i f 2 E C 52 ...
Page 423: ...W A V E F O R M SF O RD IA G R A M1 8 O c n ...
Page 424: ...Figure 9 22 A11A1 Input Output board ...
Page 430: ...Figure 9 23 A11A2 Vector Generator board ...
Page 434: ...49 9 9 tOO ...
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Page 437: ...22 3 0 S ervice W A V E F O R M S F O R D I A G R A M 2 1 m f n h ...
Page 442: ...WAVEFORMS FOR DIAGRAM 22 4999 78 ...
Page 443: ...XY PLOTTER BOARD DIAGRAM 22 See Parts List for serial number ranges ...
Page 447: ...A21 RS 232 OPTION BOARD Flfi A 9 K 01 01 W M ...
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Page 452: ...COMPONENT NUMBER EXAMPLE ...
Page 459: ...A16 SWEEP REFERENCE ADJUSTMENT LOCATION ...
Page 467: ...2230 Service ...
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Page 477: ... D ...
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