Fluke PM6690 Service Manual page 185

5
1,2 SPICLK
1,2 SPIDATA
2 SPIPLL
2 SPIOVEN
STD OSC ON/OFF
S T D OS C.
U4A
1
& 3
2
D
R278 R279
ALVC00
2.2K 47
R280
1M
C181
10N
B2
C185 LOAD OVEN
15pF
10MHZ C186
68P
C187
47P
D24
SMV1255-073
C188
R288
68P
100K
R289
100K
R290 R291
2 STD OSC TRIM
4.7K 4.7K
C193
100NF
R7
100MHz
NOT USED U49A
C R8 R9
+3.3U49 2 4 J2A
NOT USED MINICOAX-3
Not Used NOT USED
NOT USED 1G04
1 10MHZ_RUBIDIUM
U PRD
2 UPRD
+3.3VD
D25
L5
BLM21A102S
BAV99
R305 R306
C201
100 100
100NF
AN
R309
Q18 Q19
3 A
BFS17
BFS17
3 AN
47
R314
B
47
R316 R317 R318
100 100 47
R321 R322
10K 39K
R330 Q26
Not Used
R333 BC847B
C205
270
10N
R346
680
R341
C207 C208
22
10N 100NF
L8 D28
BAV99
BLM21A102S
-5.2VA
3 B
3 BN
5 C
5 BURST
1,2,5,7,8 +5VD +5VD
1,2,5,7,8 +3.3VD +3.3VD
7,8 +3.3VA +3.3VA
L11
7 +12VU +12VO
BLM41P800S
C214
C213
10N
15UF-6.3V
A
L12
1,4,5 +5VA
BLM21A102S
1,4,5,7 +12VA
U5B C215
U6B C224 U7B C225 LTC8043 100NF
OPA277 OPA277
10N 10N
1,4,7,8 -12VA
7 -5.2VA -5.2VA -12VA
5
4
R270
10K
L53
U6A
R275
BLM21A102S
- 2
OVE N OS C.
6
3 10K
C172 +
1n
C174 +12VO
OPA277
10N
B1
C175
3 4
+12V Out
U5A
100NF
2
CV Out
1 R281
VRef
2 1 5
RFb CV In GND
6
SRI
1K
3 10 MHZ / CO-08
IOut
7
C182
CLK
C183 R282
33PF U7A
2.2UF-6.3V 47
5
LD
2
LTC8043 -
6
3 +
OPA277
U4B
4
&
6
5
ALVC00
R292
4.7K R293
C189 U8A
10K
10N
2 -
C194 C195
Q17
1
100NF 100NF
3 + BC807-25
LM358
R294
47K
RUBIDIUM ON/OFF
-12VA
U4D
12
& 11
13
ALVC00
R303
47K
+3.3VD
D26 L6
S/R_ON/OFF
BLM21A102S
BAV99
R307 R308
C202
R624
100 100
100NF
2.2K
BN
R313
Q20 Q21
BFS17 BFS17 R623
47 470
R315
47 -2.1V
R323 R324 R325 R326
100 100 47
R331 R332
10K 39K
R336 Q27
R340 Not Used BC847B
C206
270
10N
R350
680
R347
C209 C210
L10 22
10N 100NF
D29
BAV99
BLM21A102S
-5.2VA
+3.3VA +3.3VA
+3.3V_PLL
+3.3V_U4
L13 R351
BLM21A102S 10
U9B
U4E C216 C217 C218 C219 C220
ADF4001
ALVC00 10N 100NF 10PF 100NF 10PF
4
3 2
+3.3V_PLL
U9A
10
CE
OVEN OSC ON/OFF
CP
11
CLK
12
DATA
LOAD PLL
13
C170 LE
100P
+3.3V_U4
8
REFIN
MUXOUT
6
RFINA
5
RFINB
R276 1
RSET/FLD
47K U4C
9
ADF4001
& 8
C176
10 R277
100P
4.7K
ALVC00
C184
R283
100P
47K
R286
470
U48A
R287
47 2
LVC1G04
X25 X52
-2.1V
C190 C191
100uF-6.3V
10N 10N
C192
R296 R606 R608
100 100 100 C487
R295 R607 R609
-12VA
22pF
100 100 100
R301
NOT USED
R304
NOT USED
+3.3VD
D27
L7
U12D
BLM21A102S
25 14 BAV99
& C204
AN R310
26 15
100NF
68
10E104
U12B U12E R319
Q22
2 9 23 17
& &
BFS17
3 10 24 18
47
R327
10E104 10E104
100
R334 47
100
R338 R337
-2.1V
U12A 100 100
4 7
&
BN 5 8
-2.1V
10E104
C211
R348 R349
10N
100 100
-2.1V
-2.1V -2.1V
+3.3VA +3.3VA +3.3VA
L14 L57 L58
BLM21A102S BLM21A102S NOT USED
+3.3U49
C221 C222 U47B C223 C494 U48B C495 U49B
100NF 10PF LVC1G04 10N 10N LVC1G04 NOT USED NOT USED 1G04
3 2
Oscillator Circuits,
1
U47A
R269
2 4
2 47
LVC1G04
R271
C168 C169
R272 220
1N 1N
3.3K
R274
14
C171
1M
C173 100P
10N
L3
100N
C178 C179
C177 C180
PLL LOCK
33PF 22PF 22PF 33PF
D23
SMV1255-073
P HAS E L OCK L OOP
R284 R285
10K 10K
R568
4 100MHz
47
C498
22PF
PLL LOCK
PLL LOCK
R588
OPCLK
NOT USED
U11B
COUNTER CIRCUIT
6 202
PLLLOCK 10MPLL
7
RBLOCK
5 OVEN OSC ON/OFF
OVENCTRL
RUBIDIUM ON/OFF
206 4
10MOVEN RBCTRL
STD OSC ON/OFF
205 3
10MSTD STDCTRL
S/R_ON/OFF
204 42
10MRB S/R_CTRL
100MHz 185
100M
R569
48
PRESC ON 5
CTRL0
49
CTRL1 PRESC TEST 5
109
150 CTRL2 OPTION
10 110
A CTRL3
11 188
X67
AN CTRL4
20
B
21
BN
45
SR
46
SRN
77
U0
98
U1
47 99
C U2
199
U3
55 200
D U4
U PRD
203
U5
SpartanIIE-2
R589
+5VD 100K
C203
10N
R311
68 R312
22
R352 R342
4.7K
820
Q23 R320
Q24
BFS17 Q25
BSR12
BSR12
47
C226
R329
10N
2.2K
R339 R343 R344 R335
150 68 68 47
L9
R328
BLM21A102S
C212
-5.2VA 120
10N
C1
47P
+3.3V_U4 +3.3V_U4 1
U8C U8B
U12F
LM358
U12C 6
-
27 12 7
&
20 28 13 5 +
F1
19
10E104
F2 LM358
-12VA
L52 10E104
-5.2L
BLM21A102S
C5
100NF
-5.2VA
1
PCB 1, sheet 5(7)
D
2
5
C
5
B
A
Schematic Diagrams 9-39