Fluke PM6690 Service Manual page 183

5
D
U39A
7
A0
6
A1 TMP
5
A2
3
O.S.
1
SDA
2
SCL
LM75
C
U40A
4
I/O0.0
5
I/O0.1
21 6
A0 I/O0.2
2 7
A1 I/O0.3
3 8
A2 I/O0.4
9
I/O0.5
10
I/O0.6
11
I/O0.7
22
2 SCL SCL
23 13
2 SDA
SDA I/O1.0
14
I/O1.1
15
I/O1.2
16
I/O1.3
17
I/O1.4
18
I/O1.5
19
I/O1.6
20
I/O1.7
1
INT
PCA9555
B
L20
7 +1.8V +1.8VFPGA
BLM41P800S
C253
220uF-10V
1,2,6,7,8 +5VD +5VD
C371
220UF-10V
L16
+3.3VFPGA
BLM41P800S
A
1,2,6,7,8 +3.3VD +3.3VD
U40B C372 U39B C320
PCA9555 100NF LM75 10n
5
4 3
R564
FILTER_A 3
330
+5VD
C470 C2
10N 10N
R418
2.2K
R419
Q38
BC807-25
6.8K L39
IMP A 3
BLM21A102S
+5VD
C471 C231
100NF 10N
R421
2.2K
R422
Q39
BC807-25
6.8K L40
ATT A 3
BLM21A102S
+5VD
C472 C248
100NF 10n
R426
2.2K
R427
Q40
BC807-25
6.8K L41
AC/DC A 3
BLM21A102S
+5VD
C473 C249
100NF 10n
R430
2.2K
R432
Q41
BC807-25
6.8K L42
COM A 3
BLM21A102S
C474 C232
100NF 10N
R565
FILTER_B 3
330
C475 C3
+5VD
10N 10N
R434
2.2K
R435
Q42
BC807-25
6.8K L43
IMP B 3
BLM21A102S
+5VD
C476 C235
100NF 10N
R437
2.2K
R438
Q43
BC807-25
6.8K L44
ATT B 3
BLM21A102S 100uF-6.3V
+5VD
C477 C236
100NF 10N
R440
2.2K
R441
Q44
BC807-25
6.8K L45
C392 C391
AC/DC B 3 1n 1n
BLM21A102S
+5VD
C478 C237
100NF 10N
C269 C270
R443
100NF 100NF
2.2K
R444
Q45
BC807-25
6.8K L46
COM B 3
C289 C290
BLM21A102S
100NF 100NF
C479 C238
100NF 10N
4 3
2
R4
10K
R3
6 OPCLK
1,2,6,7,8 +3.3VD
2
10K
2
PREKOD2
PREKOD1
R2
PREKOD0
6 PRESC TEST
10K
6 PRESC ON
1,4,6,7
1,2,6,7,8
6
1,2,6,7,8
2
2
6
7,8
1,2,6,7,8
+3.3VFPGA
+1.8VFPGA
C423 C425
100uF-6.3V
C539 C575 C384 C390
100uF-6.3V 100uF-6.3V 100uF-6.3V 100uF-6.3V
C420 C419 C418 C413
1n 1n 1n
1n
C580 C537 C582 C379 C538 C566
1n 1n 1n 1n 1n 1n
C265 C266 C267 C268
100NF 100NF 100NF 100NF
C302 C579 C343 C373 C576 C577
1n 1n 1n 1n 1n 1n
C271 C272 C273 C274
100NF 100NF 100NF 100NF
C275 C276 C567 C277 C279 C280
100NF 100NF 100NF 100n 100NF 100NF
C291 C292 C293 C294 C295 C296 C297 C298 C299 C300
100NF 100NF 100NF 100NF 100NF 100NF 100NF 100NF 100NF 100NF
U11D
COUNTER CIRCUIT SpartanIIE-2
2
Miscellaneous,
PCB 1, sheet 4(7)
1
PREKOD0 8
PREKOD1 8
PREKOD2 8
D
J15
20
19
18
SCL P RE S CAL E R
17
SDA CONNE CT OR
16
15
14
13
12
11
10
9
8
7
6
5
+12VA
4
3
2
1
+5VD
2X10 SMD
C 6
R431
BURST 6
0
C
J16
20
OPCLK
19
+3.3VD
18
SCL OP T I ON
17
SDA
CONNE CT OR
16
15
14
13
12
11
X5 10
9
8
7
OPTION
6
5
+15VD
4
3
2
1
+5VD
2X10 SMD
R428
BURST 6
NOT USED
L47 B
1,4,6,7 +12VA +12VI 3
BLM21A102S
C480 C243
100NF 10N
L48
1,4,6 +5VA +5VAI 3
BLM21A102S
C481 C244
100NF 10N
L49
+5VBI 3
BLM21A102S
C483 C245
100NF 10N
L50
7 -5.2VI -5.2VAI 3
BLM21A102S
C484 C246
100NF 10N
L51
-5.2VBI 3
BLM21A102S
C486 C247
100NF 10N
A
+3.3VFPGA
+3.3VFPGA 2
1
Schematic Diagrams 9-37