1
1
2
2
3
3
4
4
5
5
6
6
D
D
C
C
B
B
A
A
CP
AIB
1990-10-15
DML
2012-11-29
D-1
1 of 1
7228
MIDIAN ELECTRONICS, INC.
DATE:
DESIGN:
DWN BY:
REV:
APPR
COPYRIGHT ©
REV
SHEET
PROJECT NUMBER
DOCUMENT NAME
SCHEMATIC
2012
UED-1B-DMV
1
2
3
(
JU1
JU2
.022u
C1
*
C51
11
33
22
1M
R5
39K
R1
47p
C8
560K
R2
TP1
-
+
2
3
1
LMV324
U2:1
-
+
6
5
7
LMV324
U2:2
-
+
9
10
8
LMV324
U2:3
-
+
13
12
14
LMV324
U2:4
4
VCC
VCC
11
GND
GND
LMV324
U2:5
VAN
10K
R7
6.2K
R82
.01u
C9
180K
R8
.001u
C3
.01u
C2
10K
R4
15K
R3
.001u
C11
6.2K
R9
47K
R10
.1u
C4
100p
C5
TP2
27K
R11
560p
C6
-
+
2
3
1
LMV358
U3:1
-
+
6
5
7
LMV358
U3:2
8
VCC
VCC
4
GND
GND
LMV358
U3:3
27K
R79
27K
R80
2.2K
R81
+5V
470K
R12
TP3
.01u
C13
47K
R15
560p
C14
200K
R16
560p
C15
560p
C16
3.3M
R17
VAN
+
2.2u
C17
.1u
C18
+5V
+5V
100K
R19
1
2
JU5
4.7K
R18
220K
R20
B25
Q1
20K
R21
+5V
+5V
10K
R23
+5V
560p
C21
2
1
A6
D1:1
3
1
A6
D1:2
10K
R24
10K
R25
10K
R26
10K
R27
10K
R28
10K
R29
10K
R30
P1:1
P1:2
P1:3
P1:4
P1:5
P1:6
P1:7
P1:8
P1:9
+5V
.001u
C22
VIN
100p
C24
100p
C25
100p
C26
10K
R32
10K
R33
1
2
)
JU6
1
2
JU7
1
2
JU8
4.7K
R72
B25
Q6
2
1
A6
D2:1
3
1
A6
D2:2
2
1
A6
D3:1
3
1
A6
D3:2
+5V
560p
C23
+5V
1
2
MON. ON/OFF
SW1
5206
IN1
1
ENA
3
GND
2
RES
4
OUT
5
VR1
560p
C27
.001u
C28
1u
C29
4.7K
R34
4.7K
R35
.001u
C32
VIN
VAN
+5V
TP4
*
C20
10K
R22
+5V
CS
1
SCLK
2
SI
3
SO
4
VCC
8
NC1
7
NC2
6
GND
5
CAT93C46
U5
.1u
C33
+5V
47K
R36
47K
R77
OSC2
42
TCAP
41
D7
39
OSC1
43
A5
7
A6
6
A7
5
A4
8
A3
9
A1
11
A0
12
C4
27
C1
30
C6
25
GND
22
TCMP
38
IRQ
2
VDD
44
VPP
4
SS
37
B3
16
B0
13
B1
14
A2
10
C5
26
C3
28
C0
31
C2
29
C7
24
B4
17
B7
21
B6
20
RES
1
B2
15
B5
19
SCK
36
MOSI
35
MISO
34
RDI
32
TDO
33
NC4
3
NC1
18
NC2
23
NC3
40
MC68HC705C8
U1
.1u
C34
1
2
JU4
Q
1
Q
2
CK
3
R
4
D
5
6 7 8 9 10 11
Q
12
Q
13
V+
14
4013
U7
.001u
C50
.01u
C49
100K
R73
1
2
HORN ON/OFF
SW2
1.2M
R74
+5V
+5V
+5V
10K
R71
2
1
A6
D7:1
3
1
A6
D7:2
4.7K
R75
B25
Q7
1K
R76
GRN HORN
LED3
+5V
TP8
B2
2
1
A6
D8:1
3
1
A6
D8:2
BSS
FET1
560p
C48
2.2K
R70
4.7K
R69
B25
Q5
1N5231
DZ1
82R
R31
560p
C47
82R
R14
82R
R13
VIN
1K
R66
1K
R67
RED SEND
LED1
YEL CALL
LED2
TP9
4.7K
R68
100p
C45
BSS
Q4
2
1
A6
D6:1
3
1
A6
D6:2
560p
C46
TP10
560p
C44
1
2
3
)
JU10
JU11
-SQ
+SQ
2
1
A7
D5:1
3
1
A7
D5:2
TP7
47K
R65
B25
Q3
4.7K
R64
VIN
MT8870
OSC1
8
OSC2
9
GS
3
IN-
2
St/GT
19
ESt
18
IN+
1
VREF
4
VCC
20
PWDN
6
INH
5
GND
10
STD
17
Q1
12
Q2
13
Q3
14
Q4
15
TOE
11
NC1
7
NC2
16
U6
20K
R48
20K
R50
20K
R52
20K
R54
20K
R56
20K
R58
20K
R60
20K
R62
10K
R49
10K
R51
10K
R53
10K
R55
10K
R57
10K
R59
10K
R61
U1_A4
U1_A5
U1_A6
U1_A7
U1_A4
U1_A5
U1_A6
U1_A7
100K
R83
1.2M
R47
1.2M
R45
470K
R46
2
1
A6
D4:1
3
1
A6
D4:2
.1u
C43
+5V
470K
R44
.01u
C42
.1u
C41
+5V
TP6
22K
R38
22K
R39
390K
R40
.01u
C37
560p
C38
D25
Q2
11
33
22
1K
R42
27K
R43
1
2
JU3
+
2.2u
C12
100p
C40
+
2.2u
C39
VIN
VIN
TP5
U1_B6
47K
R41
1
2
JU9
U1_B6
U1_OSC2
3.58 MHz.
Y1
22p
C35
22p
C36
4.7M
R37
U1_OSC2
1
GND[BLK]
P2:1
ALERT TONE/SPKR OUT[VIO]
P2:2
COR/COS IN[GRY]
P2:3
HORN OUT[GRN]
P2:4
MON/SQ OUT[LT BRN]
P2:5
PTT IN[WHT]
P2:6
PTT OUT[DK BRN]
P2:7
PTT OUT[DK BRN]
P2:8
VIN +5.5V-18V[RED]
P2:9
RX HI PASS OUT[PNK]
P2:10
RX TONE IN[ORG]
P2:11
EMER/AUX IN[BLU]
P2:12
*
UK1
*
UK2
TP11
.47u
C31
10K
R63
.01u
C19
.47u
C30
+5V
.0033u
C7
.0033u
C10
2.2K
R6
15K
R78
