1
1
2
2
3
3
4
4
5
5
6
6
D
D
C
C
B
B
A
A
SJ10
SJ7
10K
R210
*
R235
1K
R39
1K
R69
10K
R40
100K
R305
16.0M
Y2
100K
R115
100K
R287
4
560p
C20
2.2K
R230
1K
R63
SJ6
22p
C131
100K
R226
0R
R214
1K
R292
1K
R32
B25
Q5
3
5
6
10
8
7
12
1
K2
DF2E-DC12V
SJ5
B25
Q7
4.7M
R3
SJ11
3
5
6
10
8
7
12
1
K3
DF2E-DC12V
B25
Q8
1K
R293
22p
C133
1K
R295
PAD1
2.2K
R136
100K
R26
1K
R49
B25
Q4
.1u
C134
SJ4
1K
R294
4.7K
R306
1K
R41
3
TP12
*
C155
100K
R224
SJ3
4.7K
R38
4.7K
R46
22p
C3
1K
RP2
*
R213
BSS
Q12
*
R19
22p
C2
560p
C22
560p
C28
10K
R55
MC9S12D64CFUE
E
X
T
A
L
3
4
TXD0
64
V
D
D
R
2
9
PA1
42
PA2
43
PA3
44
PE5
26
X
T
A
L
3
5
PE3
37
PAD05
56
PT6
13
PB5
21
PP1
3
PB4 20
PT7
14
PP3
1
PB0
16
PB1
17
PAD02
53
PA4 45
PP0
4
PP5
79
PAD03
54
PT0
5
RXD0
63
PT2
7
RXD1
65
TXD1 66
PAD00
51
V
S
S
R
2
8
PT1
6
PA0
41
PB2
18
PB3
19
R
E
S
E
T
3
0
PB6
22
PE6
25
PB7
23
PP2
2
PP7
78
PE7
24
PAD01
52
PE4
27
PP4 80
PE1
39
PAD06
57
PA5
46
PT3 8
PT5
12
PA6
47
PA7
48
PE0
40
PE2
38
PM0
75
PM1
74
PM2 73
PM3 72
PM4 71
PM5 70
PJ6 69
PJ7
68
V
S
S
P
L
L
3
3
T
E
S
T
3
6
V
S
S
1
1
0
V
S
S
2
5
0
V
S
S
A
6
2
V
S
S
X
7
6
V
D
D
A
5
9
V
R
E
G
E
N
6
7
V
D
D
X
7
7
X
F
C
3
2
V
D
D
P
L
L
3
1
V
D
D
2
4
9
V
D
D
1
9
PAD07
58
B
K
G
D
1
5
PT4
11
V
R
L
6
1
V
R
H
6
0
PAD04 55
U16
4.7K
R14
1K
R67
.1u
C145
100K
R222
1
2
3
4
5
6
7
8
9
10
SEE DOCUMENT 7053-INTFCABLE
FOR WIRE COLOR DESIGNATIONS
RJ45-10
CON2
560p
C26
3.58MHz
Y1
1K
R229
SJ12
RJ45-10
1
2
3
4
5
6
7
8
9
10
SEE DOCUMENT 7503-INTFCABLE
FOR WIRE COLOR DESGINATIONS
CON3
1K
R61
560p
C23
1.2M
R7
.1u
C132
1K
R43
100K
R24
.22u
C138
100K
R52
100K
R113
BSS
Q11
BSS
Q9
100K
R291
1K
R37
4.7K
R48
6
.1u
C27
.1u
C146
.47u
C4
1
1
2
2
3
3
SJ2
3
5
6
10
8
7
12
1
K1
DF2E-DC12V
560p
C24
BSS
Q15
100K
R28
2
2.2K
R18
100K
R114
.1u
C147
5
1K
R57
100K
R225
BSS
Q1
2.2K
R164
1K
R71
.1u
C5
*
C135
.47u
C84
0R
R219
2954IM
RESET
5
OUT1
1
OUT2
2
GND 4
IN1
8
IN2
3
IC1
6
IC2
7
U4
100K
R30
1K
R45
4.7K
R53
1K
R65
100K
R285
B25
Q6
2.2K
R17
.1u
C144
RJ45-10
1
2
3
4
5
6
7
8
9
10
CON6
BSS
Q16
10K
R50
4.7K
R42
100K
R6
BSS
Q10
.22u
C137
BSS
Q13
1K
R59
560p
C21
*
C10
1K
R5
100K
R54
1K
R135
NOTE7
T
1
_
IN
1
1
R
1
_
O
U
T
1
2
T
1
_
O
U
T
1
4
R
1
_
IN
1
3
C
1
+
1
C
1
-
3
C
2
+
4
C
2
-
5
VCC
16
V+
2
V-
6
GND
15
R
2
_
IN
8
T
2
_
O
U
T
7
T
2
_
IN
1
0
R
2
_
O
U
T
9
U17
100K
R223
*
C9
0R
R31
*
C136
8870
O
S
C
1
8
O
S
C
2
9
GS
3
IN-
2
St/GT
19
ESt
18
IN+
1
VREF
4
VCC 20
P
W
D
N
6
IN
H
5
G
N
D
1
0
STD 17
Q1 12
Q2 13
Q3 14
Q4 15
TOE 11
NC1
7
NC2
16
U1
0R
R25
560p
C25
SJ9
560p
C19
0R
R27
0R
R29
1
1
2
2
3
3
SJ1
10K
R44
22K
R51
1M
R12
BSS
Q14
1K
R47
2
5
1
SEE DOCUMENT 7503-PROGCABLE
FOR BOARD REV INFORMATION
J2
470K
R8
SJ8
1
JP31
BSS
Q34
+12V
+12V
+12V
+12V
+12V
+5V
+5V
+5V
+12V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+12V
+5V
+12V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
TX_MOD_INPUT
VOX
ANTIVOX
DUPLEX_PARALLEL_CROSSOVER
GUARD_HOLD_TONE
FUNCTION_TONE
RX_LINE_ENABLE_DISABLE
TELCO_RECV_MUTE
TX_OUTPUT_ENABLE_DISABLE
TX_IN_ENABLE_DISABLE
PWM_VOICE
DTMF_DECODER_2
RING
SCR_MODE_IN
RX_INPUT
+13_TO_18_VDC
HOOK
SCR_OFF_HOOK
SCR_PTT_IN
TELCO_FEEDBACK_DISABLE
+5V
SCR_COR
SCR_MODE_OUT
HLG_DET
DTMF_DECODER_1
TELEMETRY_PTT
PTT
MONITOR
F1
F2
COR
SPARE
RADIO
INTERFACE
PROG_IN
PROG_OUT
OPTIONAL
DTMF ENCODER/
DECODER
F1/F2
LOCATED ON
ANALOG PAGE
+
-
+
-
+
-
MONITOR
PTT
SEE DOCUMENT 7503-INTFCABLE
FOR WIRE COLOR DESIGNATIONS
OPTIONAL
SERIAL INTERFACE
F1
PTT
F2
MONITOR
COR
SPARE
RXD
TXD
RX IN
TX OUT
RELAYS
TTC-1 ONLY
470K
R1
1M
R2
ihs7503f1_vte1
CJS
2005-01-17
GPC
2010-10-18
F1
1 of 2
7503
MIDIA ELECTROICS, IC.
DATE:
DESIG:
DW BY:
REV:
APPR
SCHEMATIC
COPYRIGHT © 2009
REV
SHEET
PROJECT UMBER
DOCUMET AME
VTE-1
100K
R316
F14 LED
D31
F13 LED
D30
100K
R315
F11 LED
D28
F12 LED
D29
100K
R313
100K
R314
2
1
A6
D32:1
3
1
A6
D32:2
F3 LED
D14
F4 LED
D15
F5 LED
D16
F6 LED
D17
F7 LED
D18
F8 LED
D19
F9 LED
D20
F10 LED
D21
HOOK LED
D4
TRANSMIT LED
D6
RING LED
D7
SYNC/TONE LED
D10
MONITOR/
CARRIER LED
D9
F1 LED
D11
F2 LED
D13
DTMF LED
D1
A4
D2:1
A4
D5:1
POWER LED
D3
A4
D8:1
A4
D12:1
))))
1
1
2
2
3
3
JP1
))))
1
1
2
2
3
3
JP8
1
1
2
2
3
3
JP14
WIRE
))))
1
1
2
2
3
3
JP20
1
1
2
2 3
3
JP15
1
1
2
2 3
3
JP9
1
1
2
2 3
3
JP4
1
1
2
2
3
3
JP13
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
GND POWER
GND POWER
ALL JUMPERS
NOT INSTALLED UNLESS SPECIFIED
ALL OUT = NO TONE
JP41 = 2175Hz
JP42 = 1950Hz
JP43 = 2700Hz
JP44 = 1600Hz
* = NOT INSTALLED
62K
R257
.47u
C199
10K
R349
.47u
C197
1
1
2
2
JP44
1
1
2
2
JP43
1
1
2
2
))))
JP42
1
1
2
2
JP41
0R
R320
0R
R319
0R
R318
0R
R317
+5V
SECONDARY_RX_LINE_EN_DE
VOICE_STORE
100K
R328
BSS
Q36
100K
R337
BSS
Q38
.1u
C193
-
+
2
3
1
4
1
1
U19:1
LM324
+12V
-
+
6
5
7
U19:2
LM324
1K
RP1
TP24
PWM_2175
TP13
-
+
13
12
14
U19:4
LM324
-
+
9
10
8
U19:3
LM324
22R
R327
100K
R330
BSS
Q37
330R
R329
TP25
PAD2
47K
R23
47K
R22
47K
R21
47K
R20
100K
R348
100K
R347
*
R338
100K
R331
+5V
10K
R333
.47u
C198
*
R336
100K
R335
*
R334
+5V
*
R332
BSS
Q41
100K
R339
4.7K
R345
4.7K
R344
4.7K
R342
4.7K
R341
4.7K
R340
4.7K
R321
4.7K
R322
4.7K
R324
4.7K
R325
.012µ
C190
.0047µ
C186
.0047µ
C192
.0033µ
C196
.0033µ
C189
100
R343
.033µ
C194
100
R323
.033µ
C187
560R
R326
10u
C154
10u
C160
ADC INPUT
FUTURE USE
PAD10
FUTURE USE
PAD4
FUTURE USE
PAD5
FUTURE USE
PAD6
FUTURE USE
PAD8
ADC INPUT
FUTURE USE
PAD9
.015µ
C185
.033µ
C188
.015µ
C191
.033µ
C195
2.2u
C29
2R
R356
10u
C148
.012µ
C201
0R
R360
PWM_VOICE_1
.1u
C8
SD1
D36
SD1
D35
SD1
D37
SD1
D38
SD1
D39
SD1
D40
SD1
D41
SD1
D42
560R
R346
0R
R361
