Fluke PM6690 Service Manual page 163

5
1,2 SPICLK
1,2 SPIDATA
STD OSC ON/OFF
S T D OS C.
U4A U4A
1
& & 3
D 2
R278 R278
ALVC00 ALVC00 R279 R279
2.2K 2.2K
47 47
R280 R280
1M 1M
C181 C181
10N 10N
C185 C185
B2 B2
LOAD OVEN
10MHZ 10MHZ
15pF 15pF C186 C186
68P 68P
C187 C187
D24 D24
47P 47P
SMV1255-073 SMV1255-073
C188 C188
R288 R288
68P 68P
100K 100K
R289 R289
100K 100K
R290 R290 R291 R291
2 STD OSC TRIM
4.7K 4.7K 4.7K 4.7K
C193 C193
100NF 100NF
R7 R7
100MHz
U49A U49A
NOT USED NOT USED
R9 R9
C R8 R8
+3.3U49 2 4 J2A J2A
NOT USED MINICOAX-3 NOT USED MINICOAX-3
Not Used Not Used NOT USED NOT USED
NOT USED 1G04 NOT USED 1G04
RB LOCK
1 RB LOCK
1 10MHZ_RUBIDIUM
8 EXT REF
+3.3VD
D25 D25
L5 L5
BAV99 BAV99 BLM21A102S BLM21A102S
C201 C201
R305 R305 R306 R306
100NF 100NF
100 100
100 100
AN
R309 R309
Q18 Q18 Q19 Q19
3 A
BFS17 BFS17 BFS17 BFS17
3 AN
47 47 R314 R314
B
47 47
R316 R316
R317 R317 R318 R318
100 100 100 100 47 47
R321 R321 R322 R322
10K 10K 39K 39K
R330 R330 Q26 Q26
R333 R333 Not Used Not Used BC847B BC847B
C205 C205
270 270
10N 10N
R346 R346
680 680
R341 R341
C207 C207 C208 C208
22 22
10N 10N
L8 100NF 100NF
L8 D28 D28
BAV99 BAV99
BLM21A102S BLM21A102S
-5.2VA
3 B
3 BN
5 C
5 BURST
8 EXTCTRL
1,2,5,7,8 +5VD +5VD
1,2,5,7,8 +3.3VD +3.3VD
7,8 +3.3VA +3.3VA
L11 L11
+12VO
7 +12VU
BLM41P800S BLM41P800S
C214 C214
C213 C213
10N 10N
6.8UF-16V 6.8UF-16V
A
L12 L12
1,4,5 +5VA
BLM21A102S BLM21A102S
1,4,5,7 +12VA
U5B U5B C215 C215
U6B U6B C224 C224 U7B U7B C225 C225 LTC8043 LTC8043 100NF 100NF
OPA277 OPA277 10N 10N OPA277 OPA277 10N 10N
1,4,7,8 -12VA
5,7 -5.2VA -5.2VA -12VA
5
4
R270 R270
10K 10K
L53 L53
U6A U6A
R275 R275
BLM21A102S BLM21A102S
- - 2
OVEN OS C.
6
3
C172 C172 + +
10K 10K
1n 1n C174 C174
+12VO
OPA277 OPA277
10N 10N
B1 B1
C175 C175
3 4
+12V Out
U5A U5A
2 100NF 100NF
R281 R281 CV Out
1
VRef
2 1 5
RFb CV In GND
6
SRI
3 10 MHZ / CO-08 10 MHZ / CO-08
IOut 1K 1K
7
C182 C182
CLK
C183 C183 R282 R282
33PF 33PF
U7A U7A 2.2UF-6.3V 2.2UF-6.3V
5 47 47
LD
2
LTC8043 LTC8043 - -
6
3 + +
OPA277 OPA277
U4B U4B
4
& & 6
5
ALVC00 ALVC00
R292 R292
R293 R293
4.7K 4.7K C189 C189 U8A U8A
10K 10K
10N 10N
2
- -
C194 C194 C195 C195
1 Q17 Q17
100NF 100NF 100NF 100NF
3 + + BC807-25 BC807-25
LM358 LM358
R294 R294
47K 47K
RUBIDIUM ON/OFF
-12VA
U4D U4D
12
& &
11
13
ALVC00 ALVC00
R303 R303
47K 47K
+3.3VD
D26 D26
L6 L6
S/R_ON/OFF
BLM21A102S BLM21A102S
BAV99 BAV99
C202 C202
R307 R307 R308 R308
100NF 100NF
100 100 100 100 R624 R624
2.2K 2.2K
BN
R313 R313
Q20 Q20
Q21 Q21
BFS17 BFS17 BFS17 BFS17 R623 R623
470 470
R315 R315
47 47
-2.1V
47 47
R323 R323 R325 R325 R326 R326
R324 R324
100 100 47 47
100 100
R331 R331 R332 R332
10K 10K 39K 39K
R336 R336
Q27 Q27
Not Used Not Used
R340 R340 BC847B BC847B
C206 C206
270 270
10N 10N
R350 R350
680 680
R347 R347
C210 C210
C209 C209
L10 L10 22 22
10N 10N 100NF 100NF
D29 D29
BAV99 BAV99
BLM21A102S BLM21A102S
-5.2VA
+3.3VA +3.3VA
+3.3V_PLL
+3.3V_U4
R351 R351
L13 L13
BLM21A102S BLM21A102S
10 10
U9B U9B
C219 C219
U4E U4E C216 C216 C217 C217 C218 C218 C220 C220
ADF4001 ADF4001
ALVC00 ALVC00 10N 10N 100NF 100NF 10PF 10PF 100NF 100NF 10PF 10PF
4
3 2
+3.3V_PLL
U9A U9A
10
CE
OVEN OSC ON/OFF
CP
11
CLK
12
DATA
LOAD PLL
13
LE
C170 C170
+3.3V_U4
100P 100P 8
REFIN
MUXOUT
6
RFINA
5
RFINB
R276 R276
1
RSET/FLD
U4C U4C
47K 47K
9
ADF4001 ADF4001
& & 8
C176 C176
R277 R277
10 100P 100P
4.7K 4.7K
ALVC00 ALVC00
C184 C184
R283 R283
100P 100P
47K 47K
R286 R286
470 470
R287 R287 U48A U48A
47 47
2
LVC1G04 LVC1G04
X25 X25 X52 X52
-2.1V
C190 C190
C191 C191 C192 C192
10N 10N 10N 10N 100uF-6.3V 100uF-6.3V
R296 R296 R606 R606 R608 R608
100 100 100 100
100 100
C487 C487
R295 R295 R607 R607 R609 R609
-12VA
22pF 22pF
100 100
100 100 100 100
C16 C16 R591 R591
R301 R301
NOT USED NOT USED
150 150
22PF 22PF
R304 R304
NOT USED NOT USED
+3.3VD
D27 D27 L7 L7
U12D U12D
25 14 BLM21A102S BLM21A102S
BAV99 BAV99 C204 C204
AN & & R310 R310
26 15 100NF 100NF
68 68
10E104 10E104
R319 R319
U12B U12B U12E U12E
2 9 23 17 Q22 Q22
& &
& &
3 10 24 18 BFS17 BFS17
47 47 R327 R327
10E104 10E104 10E104 10E104
100 100
R334 R334
47 47
100 100
-2.1V R338 R338 R337 R337
U12A U12A 100 100 100 100
4 7
& &
BN
5 8 -2.1V
10E104 10E104
C211 C211
R348 R348
R349 R349 C212 C212
10N 10N
100 100 100 100 -2.1V
10N 10N
-2.1V -2.1V
+3.3VA +3.3VA +3.3VA
L58 L58
L14 L14 L57 L57
BLM21A102S BLM21A102S NOT USED NOT USED
BLM21A102S BLM21A102S
+3.3U49
C221 C221 C222 C222 C494 C494 U49B U49B
U47B U47B C223 C223 U48B U48B C495 C495
100NF 100NF 10PF 10PF LVC1G04 LVC1G04 10N 10N 10N 10N LVC1G04 LVC1G04 NOT USED NOT USED NOT USED 1G04 NOT USED 1G04
3 2
Oscillator Circuits,
1
U47A U47A
R269 R269
2 4
2
47 47
LVC1G04 LVC1G04
R271 R271
C168 C168 C169 C169
R272 R272 220 220
1N 1N 1N 1N R274 R274
3.3K 3.3K
14
C171 C171
C173 C173 1M 1M 100P 100P
10N 10N L3 L3
100N 100N
C178 C178 C179 C179
C177 C177 C180 C180
PLL LOCK
33PF 33PF 22PF 22PF 22PF 22PF 33PF 33PF
D23 D23
SMV1255-073 SMV1255-073
PHAS E L OCK L OOP
R284 R284 R285 R285
10K 10K 10K 10K
R568 R568
100MHz
4
47 47
C498 C498
22PF 22PF
R588 R588
OPCLK
U11B U11B NOT USED NOT USED
COUNTER CIRCUIT COUNTER CIRCUIT
PLL LOCK
8 11
PLLLOCK 10MPLL
RB LOCK
9
RBLOCK
203 OVEN OSC ON/OFF
OVENCTRL
RUBIDIUM ON/OFF
7 204
10MOVEN RBCTRL
STD OSC ON/OFF
5 205
10MSTD STDCTRL
6 202 S/R_ON/OFF
10MRB S/R_CTRL
206
EXTREFON
EXTREFCTRL
3
EXTREF
R569 R569
100MHz
185
100M
48
PRESC ON
CTRL0
49
CTRL1 PRESC TEST 5
100
150 150 CTRL2 OPTION
17 181
RESGPIBN
A CTRL3
18 188
RESETHER
AN CTRL4
LOAD PLL
189
CTRL5
LOAD OVEN
20 193
B CTRL6
21 199
LOAD TRGLVL A
BN CTRL7
200
LOAD TRGLVL B
CTRL8
30 201
SR CTRL9
31
SRN
22 75 X27 X27
C U0
16 77
D U1
80
U2
15 81
E U3
4
U4
96
+3.3VD +3.3VD
A5
+3.3V_U4 +3.3V_U4 1
SPARTANIIE SPARTANIIE
R589 R589
+5VD 100K 100K
C203 C203
10N 10N
R311 R311
68 68 R312 R312
22 22
R352 R352 R342 R342
4.7K 4.7K 820 820
R320 R320
Q23 Q23
Q24 Q24 Q25 Q25
BFS17 BFS17
BSR12 BSR12 BSR12 BSR12
47 47
C226 C226
R329 R329
2.2K 2.2K 10N 10N
R339 R339 R343 R344 R344 R335 R335
R343
150 150 68 68
68 68 47 47
L9 L9
R328 R328
BLM21A102S BLM21A102S
-5.2VA
120 120
C1 C1
47P 47P
U8B U8B
U8C U8C
U12F U12F
LM358 LM358
U12C U12C
6 - -
27 12 7
& &
5 + +
20 28 13
F1
19
10E104 10E104 LM358 LM358
F2
-12VA
L52 L52
10E104 10E104
BLM21A102S BLM21A102S -5.2L
C5 C5
100NF 100NF
-5.2VA
1
PCB 1, sheet 5(7)
D
5
C
8
5
5
8
1
1,2,5,7,8
R590 R590
150 150
C17 C17
100P 100P
B
A
Schematic Diagrams 9-17