Specifications

Table Of Contents
COM1 - J1708
Im por tant Note : All se rial ter mi na tion com po nents are sur face mount 0805 pack ages on the
bot tom of the board. These should only be in stalled by sur face mount quali fied in di vidu als.
COM2 - J1708
030923 OPERATIONS MANUAL EBC-BX Page 2 - 11
WinSystems - "The Embedded Systems Authority"
3 2 1
o o o
1 2 3
o o o
U4 - Not In stalled
U9 - In stalled
U5 - Not In stalled
1 o o 6
2 o o 7
3 o o 8
4 o o 9
5 o
J15 J17
COM1 DB9
N/C
TX/RX+
TX/RX-
N/C
GND
N/C
N/C
N/C
N/C
VCC
R106
4.7K
R109
Absent
R108
4.7K
TX/RX+
TX/RX-
R111 47 OHM
R110 47 OHM
C104 .0022 ufd
C103 .0022 ufd
3 2 1
o o o
1 2 3
o o o
U6 - Not In stalled
U10 - In stalled
U7 - Not In stalled
1 o o 6
2 o o 7
3 o o 8
4 o o 9
5 o
J16 J18
COM2 DB9
N/C
TX/RX+
TX/RX-
N/C
GND
N/C
N/C
N/C
N/C
VCC
R103
4.7K
R1105
Absent
R104
4.7K
TX/RX+
TX/RX-
R100 47 OHM
R101 47 OHM
C100 .0022 ufd
C101 .0022 ufd