AVL 9180 Service Manual

82
Date: April 10, 1996Sheet 7 of 9 Size Document Number REV
B A/D D
Title
SCHEMATIC, MAIN BOARD ISE/PH
(404)587-4040 30077 Roswell, Georgia 33 Mansell Court AVL Scientific Corp.
ADDAT[0..7]
ADDAT0
ADDAT[0..7]
A/D CONVERTER
B1
16
B2
15
B3
14
B4
13
B5
12
B6
11
B7
10
B8
9
B9
8
B10
7
B11
6
B12
5
OR
4
POL
3
STATUS
2
INHI
35
INLO
34
COMMON
33
REFIN+
36
REFIN-
39
REFCAP+
37
REFCAP-
38
REFOUT
29
BUFFER
30
AZ
31
INT
32
TEST
17
MODE
21
LBEN
18
HBEN
19
CE/LOAD
20
RUN/HOLD
26
SEND
27
OSCSEL
24
BUFFOSCOUT
25
OSCIN
22
OSCOUT
23
V-
28
GND
1
V+
40
U20 ICL7109
1 2
R61 100K
1 2
C54 1nF
8 TO 1 MULTIPLEXER
X0
13
X1
14
X2
15
X3
12
X4
1
X5
5
X6
2
X7
4
INH
6
A
11
B
10
C
9
X
3
VSS
8
VEE
7
VDD
16
U19 4051
1 2
R69 1K
1 2
R68 1K
1 2
R67 1K
KOUT TEMPOUT Na/pHOUT Cl/CaOUT
1 2
R66 1K
ADSEL0 ADSEL1 ADSEL2
+8V
+2.500V
"2.500V"
2.05V
1 2
R60 100
VIN
1
GND
3
VOUT
2
U21 MC1403
1 2
R70 1K
1 2
C56 150nF
1
TP14 UT35-017
1 2
R73
4.53K 1%
1 2
R72
1K 1%
+8V -8V
1 2
C55 330nF
1 2
C57
1uF
1 2
X1 3.58MHz
1 2
R71
200K 1%
VCC
ADSTATUS
ADDAT1 ADDAT2 ADDAT3 ADDAT4 ADDAT5 ADDAT6 ADDAT7 ADDAT0 ADDAT1 ADDAT2 ADDAT3 ADDAT4 ADDAT5
VCC -8V
NOTE: 1 LSB APPROXIMATELY 1mV
ADLBEN- ADHBEN- ADCE- ADRUN
mb7.sch
SBC PCB - ANALOG SELECTOR AND A/D CONVERTER - 9120, 30, 40

AVL 9180 Specifications

General

Brand	AVL
Model	9180
Category	Measuring Instruments
Language	English