Tektronix VITS 200 Instruction Manual page 242

C18 C17
0.1uF 0.1uF
CR14 R4
20k
R3
1.0M
C16
36pF C15
12pF
Q10
CLOCK
FREQ C19 Y1 C8
0.8-10pF 28.63636MHz R5 150pF
20k
C6
100pF
NOTE: SEE PARTS LIST FOR EARLER VALUES
AND SERIAL NUMBER BREAKS. A1A1 CRYSTAL OVEN BOARD
VITS 200
P33
R69
J11 C39
R68
20.0k
1 1 150pF
511 Q8
2 2
3 3
+10V
4 4
R70
5 5
100.0k
-5V
R72
2.43k
R1
47.5
-5V
RT11
20k
R71
100.0k
C41
0.1uF
U56B
R9
1458
332
6
7
5
U59
AD7524
15
-10V VREF VDD
GND
12
CS
13
VCODAC WR
U29-82 ED0 11
DB0 RFB
ED1 10
DB1
ED2 9
4 DB2
ED3 8
DB3
ED4 7
DB4
ED5 6
DB5
ED6 5
DB6
ED7 4
DB7
ED[0..7]
ED[0..7]
U40
4
R82
1 - 2 OSCILLATOR OVEN ON
20.0k
2 - 3 OSCILLATOR OVEN OFF
R81
200.0k
-5V
+12V
R80
U56A
8
47.5k R77
1458
3
-12V
1.0k
1
2
4
-12V
C43
0.1uF
200.0k
R78
47.5k
-12V
TP11
TP
U55A U55C
1
10H116 10H116
1 6
5 3 13 15
4 2 12 14
1 8 1
1 1
R191 R190
511 511
-5V
-5V
-5V -5V
R74
3.01k
R76
3.92K
C42
1000pF
2
R73
6.81k
C40
1000pF U55B
10H116
10 7
9 6
1
U63B
1
10H116
10 7
9 6
U63C
-5V
10H116
1
1 13 15
12 14
1
1
14
+5V
3
16 +12V
+5R
R92 U61A
8
4.75k
3 1458
1
1 2
I1
U60
2 4
I2
R90 DG211
39.2k
R91 -12V C46 1
10uF
2.21k
3 2
16
14 15
9
U38-5 ACQ/HOLD
11 10
4
8
U38-2 GLK/INT
6 7
J13
13 12
+12V
OVEN CONTROL 4 5
-12V
P13
J13
1 2 3
Q9
VR3
2.4V
-5V
R79
R83
1 OHM
-5V
REV AUG 1995
4
R217
162/260
2 3
1
U81A
-5V
10H131
5
S
2
Q
R207
7
D
162
3 2
Q
6 3
E1
9 1
CC VCC
16 6
VCC R225 R226
4 8 7
R VEE -5V
R224 R206 511 511
511 261
10
11
-5V -5V
-5V 14
15
9
+5V
16
8
-5V
4 P32 4
R218 R219
162/260 162/260
J32
1 2 3
3 2 3
1 1
U63A
-5V 1 -5V
10H116
1 6
5 3 CLK8FSC
CLK8FSC
4 2 (CLK8FSC)
(CLK8FSC)
1 8
1
R223 R222 R221 R220
C125
511 511 511 511
0.1uF
2
-5V VEE VEE
-5V 3
6
7
U63A-2
(CLK8FSC)
10
11
R221 U62-2
511 14
15
671-2132-00 - 04
9
+5V
16
8
-5V
J12
3
2
R89 R88 R87
P12
2.00k 2.00k 20.0k
CORRECTION 1
CR5
R86
392K 1 - 2 NORMAL OPERATION
+10V 2 - 3 VCO CENTER FREQUENCY ADJUST
-10V
+5V
NOTE: SEE PARTS LIST FOR EARLER VALUES
AND SERIAL NUMBER BREAKS.
U54
10125
4
AI Q0 CLKB
AI
U28-1
5
BI Q1
BI 3
12
CI Q2
CI
FLPCLK
13
DI Q3
U29-29 U83-1
DI
1
VCC VBB
4 1
GND
VEE
CLKA
U70-1
U6-21
1 3
SYSCLK
U29-30
4
U65-2
7
U65-3
U62
10125
4
AI Q0 8FSC
AI
U15-1
5
BI Q1
BI 1
12
CI Q2
CI
CLKC
13
DI Q3
J3-25
DI
1
VCC VBB 3
GND
VEE
CLKD
+5V
U43-5
C128
0.1uF 5
J12
VCO CONTROL
671–2132–00 & UP
P/O A1 INSERTER BOARD
CLOCKS 6