B
13l
OC>
POSITION
+2.5Vp
-2.5Vp
+ 2 .5 V P
R2111B
r ^
V y
5K
-2.5Vp
(CURSORS/
TIME
POSIT IO N )
0
(A ANO B
5 K ^
SEC/DIV)
-2.5Vp
(TRIG6ER)
+2.5Vp
Iru
|LEVEL|
1 C W
R 21 12 sL-l
5 K > ^
1
-2.5Vp
(TRIGGER)
+2.5VP
lew
0
TRACE
0 SEP
-2.5Vp
DAC BUP A£)>
muxo
> 1 ^ -
HUX1 > i 2 L
MUX2 > f l | -
MUX3 > -
DAC MUX OUT
y -
! INPUT DATA
i
LATCHES J
, DAC BUF
MR
/FROM U2517-15
DAC INTR > ^ ~
DAC INTR 2B <B>
- TO R2554
N J /
U 2 3 0 0
74HCT374
L < g >
DO
13
'D1
8
'D2
14
'D3
7
'D4
17
'
ds
4
'D6
18
'D7
3
< R2333
R2330 S 22
^ 4.7K 1
<<§>
■J
POt MUX CLK •
FROM U 2517-13
5 L < ^ >
POT MUX
LATCH ;]
VD0
13
SD1
8
VD2
14
SD3
7
SD4
17
SD5
4
SD6
18
\D 7
3
1
CIRCUIT
NUMBER
+ 7 .5 V
+5V
GND
- 7 .5 V
-15V
U2300
20
10
U2301
20
10
U2302
20
13
17
U2303
16
8
7
U2304
4
11
U230S
4
11
U2306
8
1
4
U2307
20
10
U2308
16
8
7
U2309
16
8
7
U2310
16
8
7
U2311
16
8
7
U2312
16
8
7
U2313
20
10
U2314
7
4
S t a t i c S e n s i t i v e D e v i c e s
S e e
Maintenance Section
A12
FOR INTEGRATED CIRCUIT SUPPLY
CONNECTIONS AND POWER SUPPLY
DECOUPLING NETWORKS SEE:
*
PROCESSOR BOARD POWER DISTRIBUTION
<$J>
PARTIAL
A 1 6
PROCESSOR BOARD
2246 1Y AND 224 6 MOD A
—A______________________________A -
+ 2 .5 V P
R 2312<
4.12K >
-2 .5 V p
+ 2 .5Vp
R 2 3 i s i
4 . 12K >
1---
t
R 2314<
2 . 49K >
+ 2 .5 V p
- 2 .5 V p
+ 2 .5 V p
R2318 <
2 .9 4 K >
- 2 .5 V P
REV JUNE 1991
7 0 6 2 -2 4
Summary of Contents for 2246 1Y
Page 13: ...2246A Service 7062 01 X The 2246 1Y or 2246 Mod A Portable Oscilloscope ...
Page 35: ......
Page 139: ......
Page 185: ......
Page 187: ......
Page 278: ...Figure 9 5b Detailed 2246 1Y or 2246 Mod A block diagram part 2 R E ...
Page 287: ......
Page 304: ...A D D J U N 1991 ...
Page 311: ...2246 1Y and 2246 Mod A Service WAVEFORMS FOR DIAGRAM 1 0 V r l III B f e I l i 6555 39 ...
Page 319: ......
Page 320: ......
Page 321: ...2246 1Y and 2246 Mod A Service WAVEFORMS FOR DIAGRAM 2 SET READOUT CONTROL CCW OFF 6555 40 ...
Page 323: ......
Page 324: ......
Page 326: ...A B C P E F G ...
Page 327: ......
Page 331: ......
Page 337: ......
Page 340: ......
Page 343: ...C l rti ...
Page 347: ...BEV JUNE 1991 7062 18 ...
Page 349: ...2246 1Y and 2246 Mod A Service WAVEFORMS FOR DIAGRAM 6 6555 43 I ...
Page 355: ...I BOARD LOCATION 8K 8J 8H 7H 8H 8H 7J 8D 7H 8H 8J 8J 7K 8K 10D 6L 6K 6L 6K 6G 5H I ...
Page 362: ......
Page 372: ...2246 1Y and 2246 Mod A Service WAVEFORMS FOR DIAGRAM 9 MORE ...
Page 373: ... 6555 72 6557 88 ...
Page 375: ......
Page 380: ...WAVEFORMS FOR DIAGRAM 10 ...
Page 387: ...WAVEFORMS FOR DIAGRAM 11 6555 73 6557 48 ...
Page 394: ...WAVEFORMS FOR DIAGRAM 12 2246 1Y and 2246 Mod A Service i f I S 1 f c i 4 i ...
Page 395: ...WAVEFORMS FOR DIAGRAM 12 cont 2246 1Y and 2246 Mod A Service ...
Page 397: ......
Page 398: ......
Page 400: ...REV JUNE 1991 7062 39 ...
Page 401: ......
Page 403: ......
Page 404: ......
Page 406: ...B 2246 IV AND 2246 MOD A ...
Page 407: ......
Page 408: ......
Page 414: ... _ 5 ...
Page 415: ...2246 1Y 2246 MOD A ...
Page 416: ......
Page 423: ...2246 1Y 2246 MOD A ...
Page 424: ...2246 1Y 2246 MOD A ...
Page 425: ......
Page 433: ......