D20
D19
D18
R9
5
10K
R9
6
10K
10K
R
151
LINERX
RADIORX
VR2.5
220PF
C17
2
1
VR2.5
FB30
2
1
FB29 2
1
Q33
3
2
1
R94
10K
R8
9
10K
E2
E1
J26
1
2
3
FB19
P
TT-
CO
M
R9
2
10K
E4
D16
D15
J11
1
2
3
R142
10K
+12V
R143
1K
Q32
3
2
1
R140
10K
+12V
R141
1K
Q31
3
2
1
CS3
W-CS1
D16
D17
D18
D19
D21
D22
D23
D20
D
[0:
23]
Q24
1
2
3
1K
R120
+12V
10K
R121
10K
R122
+12V
1K
R123
Q25
1
2
3
R124
10K
+12V
R125
1K
Q26
3
2
1
10K
R126
+12V
1K
R127
Q27
1
2
3
+12V
R128
1K
Q28
3
2
1
10K
R129
+12V
1K
R130
Q29
1
2
3
Q30
3
2
1
0.1UF
C94
VDD
U12
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
R131
1K
+12V
R132
10K
R133
10K
W-CS1
D8
D
[0:
23]
D9
D10
D11
D13
D14
D15
D12
Q17
1
2
3
1K
R102
+12V
10K
R103
10K
R108
+12V
1K
R109
Q18
1
2
3
R110
10K
+12V
R111
1K
Q19
3
2
1
10K
R112
+12V
1K
R113
Q20
1
2
3
+12V
R114
1K
Q21
3
2
1
10K
R115
+12V
1K
R116
Q22
1
2
3
Q23
3
2
1
0.1UF
C85
VDD
U11
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
R117
1K
+12V
R118
10K
R119
10K
FL0
F2-NC
F1-NO
F1-NC
MON-NO
MON-NC
K4
3
8
5
10
1
6
K2
3
8
5
10
1
6
HNDLINE
D9
D10
D11
D12
D14
D15
D
[0:
23]
D13
D8
HPTT
R-CS0
VDD
CTS
INTR
RD
RESET
A[
0:
13]
A0
A1
A2
D9
D1
1
D13
D14
D15
D[0:23]
D1
2
D1
0
D8
WR
TXD
RTS
+5V
220PF
C63
C64
220PF
220PF
C65
FB5
C66
0.1UF
0.
1U
F
C6
7
0.
1U
F
C6
8
C69
0.1UF
C7
0
0.
1U
F
C7
1
0.
1U
F
0.1UF
C72
U20
15
16
9
13
8
7
10
14
11
5
4
6
3
1
2
12
U16
1
2
3
4
5
6
7
8
9
19
18
17
16
15
14
13
12
11
FB6
FB7
FB8
C73
220PF
+5V
W-CS0
D20
D16
D
[0:
23]
D17
D18
D19
D21
D22
D23
W-CS0
D12
D8
D
[0:
23]
D9
D10
D11
D13
D14
D15
10K
R65
Q4
1
2
3
R67
10K
Q5
3
2
1
10K
R69
Q6
1
2
3
+12V
R71
1K
Q7
3
2
1
10K
R72
1K
R73
Q8
1
2
3
Q9
3
2
1
VDD
U9
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
R74
1K
+12V
R75
10K
R76
10K
10K
R77
Q10
1
2
3
R79
10K
Q11
3
2
1
10K
R81
Q12
1
2
3
Q13
3
2
1
10K
R84
Q14
1
2
3
VDD
U10
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
R88
10K
VR6
VR6
RADIOTX
C4
2
0.
001U
F
120PF
C4
3
220PF
C46
C47
220PF
R57
100K
100K
R58
33K
R59
FB2
C5
0
120PF
0.
001U
F
C5
1
R60
33K
FB3
C5
4
120PF
0.
001U
F
C5
5
FB4
120PF
C5
8
C5
9
0.
001U
F
U7
2
3
1
U7
7
5
6
VR6
VR6
LINETX
C7
4
0.
001U
F
120PF
C7
5
0.
01U
F
C7
7
C7
8
0.
1U
F
R97
100K
100K
R100
T4
4
5
6
1
2
3
0.
1U
F
C8
1
C8
2
0.
01U
F
FB10
0.
001U
F
C8
4
R104
33K
820UH
L5
L6
820UH
0.
1U
F
C8
6
C8
7
0.
01U
F
FB11
C8
8
120PF
0.
001U
F
C8
9
C9
0
0.
1U
F
0.
01U
F
C9
1
FB12
120PF
C9
2
C9
3
0.
001U
F
820UH
L7
L8
820UH
U8
2
3
1
U8
7
5
6
MCLK2
J16
3
2
1
+5V
+12V
1K
R85
R83
1K
1K
R82
R80
1K
1K
R78
RADLINE
K1
6
1
10
5
8
3
PTT-NC
PTT-NO
FL1
RXD
FL0B
FL1B
J2
15
16
17
18
19
20
21
22
23
24
25
14
13
12
26
11
10
9
1
27
8
2
3
4
5
6
7
U1
1
12
23
20
27
32
36
43
24
35
38
37
41
42
40
16
17
28
19
18
21
22
44
13
11
25
10
34
39
33
26
9
8
7
6
5
4 3
2
15
14
29
30
31
U17
11
12
13
14
15
16
17
18
19
9
8
7
6
5
4
3
2
1
0.1UF
C62
0.1UF
C61
0.1UF
C76
TX
-R
A
D
+
P
TT-
NC
P
TT-
NO
MO
N-
NC
MO
N-
NO
MO
N-
CO
M
F1
-N
C
F1
-N
O
F1
-C
O
M
F2
-N
C
F2
-N
O
F2
-C
O
M
POW
E
R
IN
DIG
0
DIG
1
DIG
2
DIG
3
DIG
4
DIG
5
CTCS
S
TP6
1
TP7
1
F2-NO
F2-COM
F1-COM
JP4
JP5
MON-COM
JP3
PTT-COM
JP2
R87
10K
R86
1K
Q15
3
2
1
33K
R101
ICBUTTS
FB1
+12V
K3
6
1
10
5
8
3
D14
+12V
D13
+12V
+12V
D1
2
1
D4
2
1
D8
2
1
C8
3
120PF
E3
TP5
1
TX-RAD-
RX-RAD-
RX-RAD+
R6
4
604
J12
3
2
1
220PF
C79
C80
220PF
J13
1
2
3
R9
3
10K
R9
1
10K
D7
VDD
J14
3
2
1
J15
1
2
3
T1
3
2
1
6
5
4
J22
1
2
3
J24
3
2
1
RX
-R
A
D
-
TX
-R
A
D
-
RX
-R
A
D
+
POW
E
R
IN
J5
6
5
3
4
1
2
FB9
R3
5
15
J23
3
2
1
J25
1
2
3
J27
3
2
1
0
R105
R107
301
T3
4
5
6
1
2
3
J19
1
2
3
R
134
604
T2
3
2
1
6
5
4
TP8
1
J21
1
2
3
SENSE
D17
10K
R9
0
10K
R99
Q16
1
2
3
PIN1OUT
D2
18
1
9
11
8
2
3
4
5
6
7
16
13
12
14
15
17
10
J10
8
7
6
5
4
3
2
1
+12V
+12V
10
R5
J7
1
2
3
4
5
6
7
8
9
FB22 2
1
DIG0
DIG1
FB23
2
1
DIG2
FB26
2
1
DIG3
FB24
2
1
FB27
2
1
DIG4
DIG5
TX-RAD+
J20
3
2
1
PIN1OUT
FB28
2
1
FB
3
1
2
1
FB25
2
1
JP1
1
2
C6
0
0.
1U
F
10K
R136
2
1
10K
R137
2
1
220PF
C12
2
1
150
R61
C9
5
0.
1U
F
1UF
C28
2
1
10K
R148
2
1
10K
R150
2
1
10K
R
147
21
10K
R
106
21
U5
7
5
6
F6
F9
F8
F7
U5
1
3
2
R98
100K
R68
100K
D6
DIG5
DIG4
DIG3
DIG2
2N3904
A
B
A
B
2N3904
2N3904
2N3904
2N3904
2N3904
2N3904
2N3904
2N3904
2N3904
74LCX574
CLK
Y7
Y6
Y5
Y4
Y3
Y2
Y1
Y0
VCC
GND
D7
D6
D5
D4
D3
D2
D1
D0
OE
2N3904
2N3904
2N3904
2N3904
2N3904
2N3904
2N3904
74LCX574
CLK
Y7
Y6
Y5
Y4
Y3
Y2
Y1
Y0
VCC
GND
D7
D6
D5
D4
D3
D2
D1
D0
OE
NC
+
NC
+
VDD
VDD
VDD
LT1181A
R1OUT
V+
C1+
C1-
V-
C2+
C2-
T1IN
T1OUT
T2IN
T2OUT
R2IN
R1IN
R2OUT
VC
C
GN
D
74LCX541
O7
O6
O5
O4
O3
O2
O1
O0
OE2
Y7
Y6
Y5
Y4
Y3
Y2
Y1
Y0
OE1
2N3904
2N3904
2N3904
2N3904
2N3904
2N3904
74LCX574
CLK
Y7
Y6
Y5
Y4
Y3
Y2
Y1
Y0
VCC
GND
D7
D6
D5
D4
D3
D2
D1
D0
OE
2N3904
2N3904
2N3904
2N3904
2N3904
74LCX574
CLK
Y7
Y6
Y5
Y4
Y3
Y2
Y1
Y0
VCC
GND
D7
D6
D5
D4
D3
D2
D1
D0
OE
NE5532
-
+
NE5532
-
+
600:600
NE5532
-
+
NE5532
-
+
DATE
CHK
TITLE
OF
NEXT
MODEL
DESCRIPTION
REV.
LOC.
REVISION
SHEET
REV.
SHEET
STATUS
REVISIONS
4
3
2
1
D
4
3
2
1
C
B
A
A
B
C
D
R
SIZE
DWG.
NO.
SHT.
APP
DR
D
ECO NO.
DRFT
CHKR
APP
DATE
NOTES:
This drawing, written description or specification
and shall not be released, disclosed, nor duplicated
without the written permission of TELEX.
is a proprietary product of Telex, Lincoln, NE
TELEX COMMUNICATIONS, INC.
LINCOLN, NEBRASKA
ASS'Y
CAD GENERATED DRAWING
REFERENCE PCB NUMBER :
A
B
NC
+
7
6
5
4
3
2
8
27
1
9
10
11
26
12
13
14
25
24
23
22
21
20
19
18
17
16
15
RTDB
2
5
TL16C550C
PLCC44
A0
A1
A2
CS0
CS1
D0
D1
D2
D3
D4
D5
D6
D7
DDIS
INTRPT
MR
NC4
RCLK
RD2
SIN
SOUT
VC
C
VSS
WR2
XI
N
XOU
T
AD
S
BAUDOUT
CS2
CTS
DCD
DS
R
DTR
OUT1
OUT2
RD1
RI
RTS
RXRDY
TX
RDY
WR1
NC3
NC2
NC1
74LCX541
O7
O6
O5
O4
O3
O2
O1
O0
OE2
Y7
Y6
Y5
Y4
Y3
Y2
Y1
Y0
OE1
2
1
2
1
2
1
2
1
2N3904
NC
+
A
B
A
B
A
B
A
B
10K:10K
A
B
A
B
2
1
4
3
5
6
A
B
A
B
A
B
600:600
A
B
10K:10K
A
B
2N3904
B2
G1
B1
G
ND2
F2
G
ND1
A1
G2
D2
E2
DP
1
C1
D1
C2
A2
DP
2
E1
F1
a1
f1
b1
g1
e1
c1
d1
d2
e2
c2
g2
f2
b2
a2
1
2
3
4
5
6
7
8
1/
2W
RTDB9
8
7
6
5
4
3
2
1
9
10
11
A
B
2
1
NE5532
-
+
NE5532
-
+
REFER TO SHEET 1 FOR ECO HISTORY.
REFERENCE PCB : 750561
A
SBC
01/15/01
770660
10K Ohm: J12,J13=B
RX+
TX+
TX-
RX-
RX Impedance-Line 1
Radio
Serial Interface
J20,J21=A 2W
J20,J21=B 4W
RX Impedance
600 Ohm: J19=A
10K Ohm: J19=B
TX Impedance
600 Ohm: J18=A J17=A
1200 Ohm:J18=B J17=A
1800 Ohm: J18=A J17=B
2400 Ohm: J18=B J17=B
600 Ohm: J12=B,J13=A
8 Ohm: J12=A, J13=B
J14, J15, J22, J23 A=Bypass, B=Transformer
G
R
O
UND
PT
T
C
OM
PT
T
N
O
POW
E
R
RA
D-
RX
RA
D-
TX
879457
DEE
SBC
01/15/2001
VEGA
DSP 223
SCHEMATIC
2
2
770660
Line
J24, J25 A=Bypass, B=Transformer
RELEASED FOR PILOT BUILD
Summary of Contents for DSP-223
Page 4: ......
Page 26: ...22 Vega DSP 223 9 Schematics and Parts Lists 9 1 PCB P N 750561 Revisions A to E...
Page 31: ......
Page 34: ...Tone Remote 23 9 2 PCB P N 750561 Revision F...
Page 39: ......
Page 42: ...24 Vega DSP 223 9 3 PCB P N 750561 Revision G...
Page 47: ......
Page 50: ...Tone Remote 25 9 4 PCB P N 750561 Revision H...
Page 55: ......
