A
A
3
4
14
13
FL8B
1
2
16
15
FL8A
+5V
1
2
3
4
5
6
7
8
9
10
R4
10K
GPIBINT
DB[0..31]
DB[0..31]
E1
1
CK4-0
DB24
DB25
DB26
DB27
DB28
DB29
DB30
DB31
+5V
+5V
D3
2
R129
10.0K
R128
4.75K
GPIB Controller
(ACTVCTL)
(LOCSRQ)
(LOCATN)
(LOCEOI)
(LOCDAV)
IO0
11
IO1
12
IO2
13
IO3
14
IO4
15
IO5
16
IO6
17
IO7
19
CLK
20
DIO1
42
DIO2
41
DIO3
39
DIO4
38
DIO5
37
DIO6
36
DIO7
35
DIO8
34
ACCGR
3
CNTL
33
SRQ
32
ATN
31
EOI
30
DAV
29
NRFD
27
NDAC
26
IFC
25
REN
24
TE
23
RS0
7
RS1
8
RS2
9
DBIN
6
RESET
21
ACCRQ
2
INT
10
TR
43
WE
5
CE
4
NC
1
NC
18
VCC
44
GND
22
NC
28
NC
40
U24
9914
1
2
3
U2A
74F32
A
A
A
3
4
14
13
FL1B
1
2
16
15
FL1A
7
8
10
9
FL8D
5
6
12
11
FL8C
D1
19
D2
18
D3
17
D4
16
D5
15
D6
14
D7
13
B1
2
B2
3
B3
4
B4
5
B5
6
B6
7
B7
8
PE
11
TE
1
D8
12
B8
9
U1
75160
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
J2
GPIB
CONNECTOR
(REAR PANEL)
SHIELD
(DIO)1
(DIO)2
(DIO)3
(DIO)4
(EOI)
(DAV)
(NRFD)
(NDAC)
(IFC)
(SRQ)
(ATN)
(DIO)5
(DIO)6
(DIO)7
(DIO)8
A
A
A
A
7
8
10
9
FL1D
5
6
12
11
FL1C
4
5
6
U2B
74F32
9
10
8
U2C
74F32
12
13
11
U2D
74F32
TE
(LOCNRFD)
(LOCNDAC)
(LOCIFC)
(LOCREN)
+5V
C75
.1UF
RST25_2
GPIBCS
GPWE
BDIN
QADS3
QADS2
QADS4
R185
33.2
R219
33.2
R207
33.2
RST25_2
E1
5
E1
5
D4
2
B4
5
QADS[0..31]
F5
5
QADS[0..31]
H3
1
+5V
1
2
3
4
5
6
7
8
9
10
R5
10K
DC
13
SRQ
15
ATN
16
EOI
17
DAV
18
NRFD
19
NDAC
20
IFC
21
REN
22
SRQ
10
ATN
9
EOI
8
DAV
7
NRFD
6
NDAC
5
IFC
4
REN
3
TE
2
SC
1
NC
11
NC
14
NC
23
U6
DS75162SOIC
A
A
A
7
8
10
9
FL10D
5
6
12
11
FL10C
3
4
14
13
FL10B
1
2
16
15
FL10A
(DAV) RETURN
(NRFD) RETURN
(NDAC) RETURN
(IFC) RETURN
(SRQ) RETURN
(ATN) RETURN
LOGIC RETURN
(REN)
A
A
A
A
A
5
6
12
11
FL9C
3
4
14
13
FL9B
1
2
16
15
FL9A
GPIBC
+5V
H2
6
R106
10.0K
H0
H1
H2
H3
H4
H5
H6
DB24
DB25
DB26
DB27
DB28
DB29
DB30
A1
2
B1
18
A2
3
B2
17
A3
4
B3
16
A4
5
B4
15
A5
6
B5
14
A6
7
B6
13
A7
8
B7
12
A8
9
B8
11
G
19
DIR
1
U122
74FCT2245
+5V
1
2
3
4
5
6
7
8
9
10
R282
4.7K
DB31
+5V
GWR2
HICS
H32
G51
R255
10.0K
H7
A
7
8
10
9
FL9D
H0
H1
H2
H3
+5V
1
2
3
4
5
6
J10
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
J53
FOR
TEST
ONLY
J53 CONNECTS TO
1 2 6
A3
AUDIO
BOARD
A5
AUDIO
GEN.
BOARD
A1A1
ANALOG
ACQUIS.
BOARD
DIG.
H4
H5
H6
H7
HA0
HA1
HA2
HENOUT
HRW
SBIT
GEN
H1
6
1A1
2
1Y1
18
1A2
4
1Y2
16
1A3
6
1Y3
14
1A4
8
1Y4
12
2A1
11
2Y1
9
2A2
13
2Y2
7
2A3
15
2Y3
5
2A4
17
2Y4
3
1G
1
2G
19
U123
74ABT2244
IRQ4B
F5
5
QADS2
QADS3
QADS4
HEN
QADS23
GND
RSTOA
H1
6
E55
VCC
AM 700
+5V
GPIB CONTROLLER AND HOST INTERFACE
PART OF A6 MAIN/CPU BOARD
DIG
RSTOB
11