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D11
D10
D9
D8
+5V
+5V
D7
D6
D5
D4
+5V
+5V
+5V
+5V
CURSOR
& CURSOR ENABLE
CURSOR VS SWEEP SYNCHRONIZATION
W_FOCUS
CURSOR
J156
CONNECTS
TO J550
A16
WAVEFORM
HIGH
1
1
2
2
3
3
J156
BOARD
<42>
A4
VOLTS
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
21
22
22
23
23
24
24
25
25
26
26
27
27
28
28
29
29
30
30
31
31
32
32
33
33
34
34
35
35
36
36
37
37
38
38
39
39
40
40
41
41
42
42
43
43
44
44
45
45
46
46
47
47
48
48
49
49
50
50
51
51
52
52
53
53
54
54
55
55
56
56
57
57
58
58
59
59
60
60
J180
<37>
<36>
<39>
F1
H1
E5
SUBCURSE
/SUBCURSE
WFM_Z-AXIS
-REF_H_SYNC
-15V
+15V
+5V
DIGITAL DELAY
NC
NC
NC
NC
D9
D10
D11
ED_1
ED_2
ED_3
ED_4
ED_5
ED_6
ED_7
D0
3
Q0
2
D1
4
Q1
5
D2
7
Q2
6
D3
8
Q3
9
D4
13
Q4
12
D5
14
Q5
15
D6
17
Q6
16
D7
18
Q7
19
CLK
11
OC
1
U243
74LS374
TRIG_EN
TRIG_EN
F4
C3
LINE_SEL_PHASE
TRIG_EN
HALF_TRIG_EN
/COUNTER_ENABLE
WLS_LINE
+5V
D
2
Q
5
CK
3
Q
6
P
R
4
C
L
1
U429A
74LS74
<37>
<40>
T_CURSOR_IN
LINESEL I/CK
1
I
2
I
3
I
4
I
5
I
6
I
7
I
8
I
9
I
10
I
11
I
13
I
14
I
23
I/O
22
I/O
21
I/O
20
I/O
19
I/O
18
I/O
17
I/O
16
I/O
15
U426
20V8-15
|160-8232|
F1
<37>
A2
NC
NC
/CLK_RUN
/CURSOR_LOCATE
<36>
NC
TIME_DOTS_EN
SUBCURS
/T_C_LOCATE_CTRL
SUBC_DOTS_EN
/FREQ_CAL
<40>
C2
<40>
C2
<37>
F5
<40>
C3
V_SYNC
W_BLANK_EN
COUNTERS
-REF_H_SYNC
-REF_H_SYNC
ENT
10
ENP
7
CLR
1
LOAD
9
CLK
2
RCO
15
QD
11
QC
12
QB
13
QA
14
A
3
B
4
C
5
D
6
U333
74LS163
(12 BITS)
CURSOR 1
DATA
D2
D3
D4
D5
D6
D7
D8ED_0
ED_2
ED_3
ED_4
ED_5
ED_6
ED_7
D0
3
Q0
2
D1
4
Q1
5
D2
7
Q2
6
D3
8
Q3
9
D4
13
Q4
12
D5
14
Q5
15
D6
17
Q6
16
D7
18
Q7
19
CLK
11
OC
1
U236
74LS374
<36>
B2
<40>
G1
<36>
E2
VECT_INT_LAMP
W_RO_BLNK
/WLS_FIELD
TRIG_EN
V_SYNC
EA_1
EA_2
+100V
CONNECTS
BOARD
A11
INTERCONNECT
J180
TO J492
<40>
<40>
<36>
<40>
<40>
<40>
G2
G2
G4
A1
G3
G3
<36>
A4
<36>
A4
VECT_EXT_LAMP
PHASE_BLANK
VECT_SCALE_GND
WFM_EXT_LAMP
WFM_SCALE_GND
WFM_INT_LAMP
/WFM_BLANK
V_BLANK_EN
EA_0
W_BLANK_EN
WLS_LINE
<36>
A1
W_BLANK_EN
WLS_LINE
AGND
NC
NC
NC
D0
D1
ED_0
ED_1
ED_5
ED_6
ED_7
D0
3
Q0
2
D1
4
Q1
5
D2
7
Q2
6
D3
8
Q3
9
D4
13
Q4
12
D5
14
Q5
15
D6
17
Q6
16
D7
18
Q7
19
CLK
11
OC
1
U239
74LS374
NC
NC
NC
NCD3
D2
D1
D0
ENT
10
ENP
7
CLR
1
LOAD
9
CLK
2
RCO
15
QD
11
QC
12
QB
13
QA
14
A
3
B
4
C
5
D
6
U336
74LS163
-REF_H_SYNC
/RAMP_START
NC
NC
COUNTER_ENABLE_DATA
/COUNTER_ENABLE
+5V
D
12
Q
9
CK
11
Q
8
P
R
1
0
C
L
1
3
U223B
74LS74
D
12
Q
9
CK
11
Q
8
P
R
1
0
C
L
1
3
U429B
74LS74
512US E2
FREQ CAL TIMER
FREQ_CAL_CLK
+5V
ENT
10
ENP
7
CLR
1
LOAD
9
CLK
2
RCO
15
QD
11
QC
12
QB
13
QA
14
A
3
B
4
C
5
D
6
U423
74LS163
8 COUNT DELAY
NC
NC
NC
NC
ENT
10
ENP
7
CLR
1
LOAD
9
CLK
2
RCO
15
QD
11
QC
12
QB
13
QA
14
A
3
B
4
C
5
D
6
U339
74LS163
NC
(12 BITS)
CURSOR 2
DATA
D7
D6
D8
D9
D10
D11
ED_0
ED_1
ED_2
ED_3
ED_4
ED_6
ED_7
D0
3
Q0
2
D1
4
Q1
5
D2
7
Q2
6
D3
8
Q3
9
D4
13
Q4
12
D5
14
Q5
15
D6
17
Q6
16
D7
18
Q7
19
CLK
11
OC
1
U233
74LS374
<40>
<40>
<36>
A4
<36>
A4
<36>
B4
<36>
F4
E5
G5
<39>
F1
V_COIL
W_COIL
/VECTOR_BLNK
PIX_SIG
V_FOCUS
V_LINESEL
SEG_INTENS
/CURSOR_CLK
A1
NOTE:
SEE TABLE 38
FOR SIGNAL
ORIGIN OR
DESTINATION
<45>
<36>
E4
<36>
F4
<39>
H3
<39>
H3
VECT_Z-AXIS
V_RO_BLNK
Y_POSITION
X_POSITION
ED_2
ED_3
ED_4
ED_5
ED_6
ED_7
<40>
NC
NC
NC
GRAT_CLK
/CURSOR_CLK
EA_0
EA_1
EA_2
/EWR
+5V
A
1
B
2
C
3
G1
6
G2A
4
G2B
5
Y0
15
Y1
14
Y2
13
Y3
12
Y4
11
Y5
10
Y6
9
Y7
7
U329
74LS138
<37>
B3
G3
D5
D4
D3
D2
D1
D0ED_0
ED_1
ED_2
ED_3
ED_4
ED_5
NC
NC
NC
NC
1US
NC
<37>
A4
C217
200PF
/RAMP_START
+5V
+5V
R217
10.0K
C
X
6
R
X
7
A
9
B
10
C
L
1
1
Q
5
Q
12
U218B
74LS123
NC
NC
NC
NC
D
2
Q
5
CK
3
Q
6
P
R
4
C
L
1
U420A
74LS74
<37>
<37>
E3
/FREQ_CAL
FREQ_CAL
SEE ELECTRICAL PARTS LIST
PARTS WITHIN BOX
HAVE BEEN CHANGED
C329
.1UF
C336
.1UF
C339
.1UF
+5V+5V +5V
C223
.1UF
C333
.1UF
C320
.1UF
C323
.1UF
C327
.1UF
+5V +5V +5V+5V +5V
HI = COUNTER ENABLE
C133
.1UF
C136
.1UF
C139
.1UF
C143
.1UF
C220
.1UF
/FREQ_CAL
+5V +5V +5V +5V +5V
CURSOR SELECT
COUNTER_CLOCK
+5V
+5V
D
2
Q
5
CK
3
Q
6
P
R
4
C
L
1
U223A
74LS74
<39>
A4
A3
<40>
A2
<37>
B5
/CURSOR_1_EN
/CURSOR_2_EN
ED_[0..7]
/EWR
ED_[0..7]
<39>
A4
<39>
A5
<39>
H1
<39>
H1
<39>
VECT_H_POS
VECT_V_POS
/MUX_SEL
/DAC_SEL
ED_0
ED_1
1780R–SERIES
TIMING CURSOR COUNTERS <38>
PART OF A4 Z-AXIS BOARD
IN REAR OF MANUAL