Maxon sm-2000 mobile, Voltage charts (sm-2150/vhf), Page-51- december 98 – Maxon Telecom FM Mobile radio SM-2000 User Manual
Page 55
VOLTAGE CHARTS (SM-2150/VHF)
MAXON SM-2000 MOBILE
VOLTAGE CHARTS (SM-2150/VHF)
Page-51-
December 98
IC409
PIN
DESCRIPTION
TX
RX
PIN
DESCRIPTION
TX
RX
1
DATA
0
0
21
CH-4
2
EEPROM ENABLE
0
0
22
CH-8
3
PLL ENABLE
5
5
23
MONITOR
5
5/0
4
CHANNEL SPACING
5/0
5/0
24
PTT
0
3.9
5
DATA IN
0
0
25
PROG. ENABLE
5
5
6
RED L.E.D.
5
0
26
TX ENABLE
5
0
7
BUSY
5/0
0
27
ALERT TONE
0
0
8
EXT OPTION
5
5
28
MF6 CLK
CL
CL
9
HOOK SW
0/3.7
0/3.7
29
CALL DETECT
0
0
10
LOCK DET
0
0
30
SEND UP CONTROL
0
0
11
TEST
5
5
72
GND
0
0
12
X1
5
5
73
VCC
5
5
13
X2 (OPEN)
0
0
74
OSC1
2.3
2.3
14
GND
0
0
75
OSC2
2.3
2.3
15
D TO A
5/0
0
76
RESET
0
0
16
D TO A
5/0
0
77
AUDIO ENABLE
5
5/0
17
TONE ENABLE
5/0
0
78
GREEN L.E.D.
0
5
18
D TO A
5/0
0
79
RX ENABLE
0
5
19
CH-1
80
CLK
20
CH-2
IC411
PIN
1
2
3
4
5
6
7
8
RX VOLTAGE
0
4
1.9
1.9
0
0
0
0
TX VOLTAGE
0
1.2
1.9
2.75
2.75
0
0
2
PIN
9
10
11
12
13
14
15
16
RX VOLTAGE
5
5
0
1.9
3.7
1.9
0.5
5
TX VOLTAGE
0
0
0
1.9
4
1.9
1.2
5
IC412
IC401
PIN
TX
RX
PROGRAM
PIN
TX
RX
1
0
0
1
0
0
2
0
0
2
0
0
3
3.7
3.7
0
3
2
1.8
4
3.7
3.7
0
4
2
2
5
0
0
5
5
0
6
GND
GND
6
0
0
7
GND
GND
7
0
0
8
GND
GND
8
SAT 1.9
2
9
5
0
9
SAT 1.9
2
10
5
0
10
0
0
11
5
0
11
0
0
12
0
0
12
0
5
13
0
3.8
3.6
13
5
5
14
0
3.8
3.6
14
5
5
15
0
0
0
16
5
5