Figure 10-20 exciter schematic, Exciter schematic figure 10-20 – Viking 242-2009-632 User Manual
Page 221
March 1999
Part No. 001-2009-600
10-15
EXCITER SCHEMATIC
FIGURE 10-20
2
3
4
5
6
7
8
15
14
10
LPTT 11
EX MOD 13
WO 417
WO 425
WO 419
WO 427
WO 421
WO 429
WO 423
+ C476
4.7
R487
4.99k
R486
12.1k
V REF
+
U402B
R425
50k
7
6
7
R427
62k
R426
0
R424
10k
+
U402A
2904
R417
10k
3
2
1
2
MOD
DC IN
GNDA GNDB GNDC
Y401
TCXO 1 PPM
RF OUT
17.5 MHz
C410
.01
CR401
9.1V
+ C426
4.7
R416
270
3
+12V
C409
.01
5
R449
10k
+
U407B
2904
+3.5V
V REF
V REF EX 9
5
6
5
+12V
SYN CS RX 12
+5V
R438
10k
R439
1k
R440
1k
SYN LK RX 16
C423
100pF
RF DATA 20
RF CLK 19
R405
1k
R404
100
+ C421
4.7
R435
1k
R434
294
+12V
C422
.1
V PD
CLK
DATA
LOCK DET
ENABLE
14
2
19
18
5
U403
145190
C424
.1
C482
27pF
R436
100
R437
100
C425
.1
C483
27pF
+5V
12
V DD
V CC
+
U404A
2904
R446
50k
R445
120k
R447
1k
2
3
1
R444
10k
+
U404B
2904
6
7
5
C497
100pF
6
PD OUT
REF IN
C417
.01
C453
820pF
L402
.1uH
R428
10
+12V
C416
.1
Q403
3636
Q404
3636
C418
.001
R433
270
R430
2.7k
R431
3.3k
R432
3.3k
C419
.01
C420
5.6pF
C484
27pF
R441
47k
C485
27pF
20
10
8
7
11
F IN
RX
GND
F IN
C499
27pF
C429
27pF
C498
2.7pF
R456
470
Q403
3636
Q404
3636
L403
.018uH
R452
100
C430
27pF
R451
6.8k
+12V
R450
10
R453
1.6k
C431
27pF
R457
36
C479
27pF
R455
150
R454
1.6k
C432
27pF
C433
2pF
A007
VCO
850-870 MHz
MOD
TAP
CNTL
RF OUT
L404
FREQ
ADJ
C441
1pF
Q410
3636
Q411
3636
R467
1.6k
R466
1.6k
R465
1.2k
R468
150
C480
39pF
C444
27pF
C443
27pF
R464
5.6k
L406
.039uH
R463
100
C442
27pF
R462
10
C434
27pF
+12V
C446
27pF
C445
27pF
R443
36
R470
330
R469
2.4k
Q412
3636
R473
1k
C448
27pF
+ C477
1
R472
180
+15V
C449
5.6pF
C451
5.6pF
Q413
4098
C461
27pF
C451
5.1pF
R458
130
+15V
C465
5.6pF
R474
2k
R480
7.5k
Q405
3612
R481
1.3k
+ C463
15
+ C481
1
+ C496
15
C462
.001
C464
.01
J402
NOTES:
1. ALL RESISTORS ARE IN OHMS AND ALL CAPAICITORS IN
MICROFARADS UNLESS OTHERWISE SPECIFIED.
2. IC NUMBERS NOT SHOWN:
PIN
NUMBER
U402, U404,
U407
IC
+12V
GND
8
4
C471
.001
+ C472
1.5
8
U406
LM7L12ACM
V IN
V OUT
GROUND
A
C
B
GND
2
3
6
7
1
+ C474
4.7
C475
.001
R419
12.1k
R429
4.99k
+ C428
4.7
+12V
+15V
+3.5V
C466
.001
+ C467
1.5
8
U405
78L05
V IN
V OUT
GROUND
A
C
B
GND
2
3
6
7
1
+ C469
4.7
C470
.001
+5V
R482
0
SOURCE
SOURCE
SOURCE
SOURCE
R407
1k
HS LK EX 17
HS CS EX 18
J401
C401
100pF
R488
10k
R401
10k
+5V
WO431
C488
.1
C404
.1
C403
.1
10
9
8
28 LOCK DET
FV
V
R
C400
27pF
J403
BUFFERED
OCXO IN
27
N6
C402
.1
C405
.001
+5V
21
17
16
15
3
T/R
N5
N4
Vcc
OSC IN
U401
MC145151DW2
R461
3.6k
4
PD OUT
+ C406
1
+ C407
33
R412
1K
R411
1k
C408
56pF
C477
27pF
C412
27pF
F IN 1
R485
1k
L401
10nH
R418
10
+12V
Q401
3658
Q402
3658
C413
.001
R423
270
R422
3.3k
R421
3.3k
C414
.01
R420
2.7k
C411
.1
C415
100pF
R456
680
+15V 1
17
1
4
3
5
7
2
8
6
+12V
C450
4.3pF
CR402
5.6V
R471
180
CR403
5.6V
R459
130
+ C460
4.7
R489
300
R490
18
R491
300
RF OUT
+3.5V
+3.5V
+3.5V