DTR-4.5
SCHEMATIC DIAGRAM 10
I/O terminal sections
VOPT
VQ112
DGND
RX5
RX4
DGND
RX3
RX2
DGND
RX1
RX0
DGND
DSP5V
TX
VCPU
232RZ/FRXD
232TX/FTXD
Optical
Coaxial
IN1
IN2
IN1
IN2
OUT
NADG-8368
RS-232C
TO NADG-8366 (SCH. 9)
TO NAAR-8365-1 (2) (SCH.2)
R114
10
C116
104K
R115
220K
R124
330
C125
104Z
C124
104Z
C113
102k
R113
10
L112
022M
L113
022M
R123
330
C115
101J
C114
101J
R111
75
R112
75
R127
0
C123
104Z
L115
022M
U111
TOTX179L
1
GND
2
VCC
3
IN
U112
TORX179L
2
GND
3
VCC
1
IN
U113
TORX179L
2
GND
3
VCC
1
IN
P112
5
3
2
4
1
C117
104K
R116
220K
C129 104Z
R122
100K
C122
104Z
L116
022M
C118
080D
R117
10K
R118
10K
C120
080D
R119
10K
C119
080D
R128
0
C121
100/6.3
+
Q112 TC74HCU04AF
1
2
3
4
5
6
7
GND
8
OUT4
9
IN4
10
OUT5
11
IN5
12
OUT6
13
IN6
14
VCC
Q111 TC74HCU04AF
1
2
3
4
5
6
7
GND
8
OUT4
9
IN4
10
OUT5
11
IN5
12
OUT6
13
IN6
14
VCC
L114
022M
C128
100/6.3
+
C130
100/6.3
+
C102
100/6.3
+
C103
104Z
C104
1/50
+
C105
1/50
+
R102
330
R104
330
R105
330
C107
1/50
+
C106
1/50
+
R103
330
Q101
MPD4721GS
1
VDD
2
C1+
3
VCC
4
C1-
5
C5+
6
C5-
7
8
9
10
11
12
13
14
15
VCHA
16
_STBY
17
VSS
18
C4-
19
GND
20
C4+
P101
1
6
2
7
3
8
4
9
5
P120A
12
11
10
9
8
7
6
5
4
3
2
1
L101
BLM21A102F
P103B
4
3
2
1
U4
A
1
2
3
4
5
B
C
D