Sam4s ER-250RF - Page 54

10-10 SAM4S ER-350 SERIES
9 6
1
5 1
KSH
VCC
TXD N.C
9
CN3:I
7
CN3:G
5
CN3:E
3
CN3:C
IF-350.SCH 1
RXD GND VCC
VCC
4.7K R1
VCC
10uF 50V CE2
10uF
50V
CE3
10uF 50V CE1
VCC
8
CN3:H
6
CN3:F
4
CN3:D
2
CN3:B
2003-11-27
1.0
1 3
2
Q2 KSC945-G
Note] CN1 #4 : ER-550 Use for Handshaking. ER-350 Not Connection in Main Board.
2
CN1:B
4
CN1:D
1
CN3:A CON-DSUB;9P,FEMALE,ST
3
CN1:C
5
CN1:E
1
CN1:A
FROM MAIN BOARD
4.7uF 50V CE5
1 3
2
Q1 KSC945-G
R2
2.2K
10K
R4
4.7uF 50V CE4
10K R3
9
R2OUT
8
R2IN
7
T2OUT
10
T2IN
11
T1IN
14
T1OUT
6
V-
4
C2+
5
C2-
3
C1-
16
VCC
1
C1+
15
GND
2
V+
12
R1OUT
13
R1IN
IC1 MAX232A
ER-350 INTERFACE PCB (IF-350)
BD1 BD2