供应
+5V +12V –12V
供应
+5V +12V –12V
28
1
15
V
CC
V
DD
V
EE
选择A = 0
选择B = 1
LOOPBACK = 1
7
8
22
选择
选择B
环回
选择A = 0
选择B = 1
LOOPBACK = 0
28
1
15
V
CC
V
DD
V
EE
7
8
22
选择
选择B
环回
T
OUT
A1
R
IN
A1
T
IN
A
R
OUT
A
T
OUT
A*1
R
IN
A1
T
IN
A
R
OUT
A
R
IN
B2
R
IN
B1
T
OUT
B1
T
OUT
B2
R
OUT
B
R
IN
B2
R
IN
B1
T
OUT
B*1
T
OUT
B*2
R
OUT
B
T
IN
B
T
IN
B
14
GND
14
SP306
GND
SP306
RS - 423驱动器
*三态输出
RS - 423接收器
RS- 422接收器
RS-422驱动器
*三态输出
图2.控制输入配置 - 选择A = 0 ，选择B = 1
供应
+5V +12V –12V
供应
+5V +12V –12V
28
1
15
V
CC
V
DD
V
EE
选择A = 1
选择B = 0
LOOPBACK = 1
R
IN
A2
R
IN
A1
T
OUT
A1
T
OUT
A2
28
1
15
V
CC
V
DD
V
EE
选择A = 1
选择B = 0
LOOPBACK = 0
R
IN
A2
R
IN
A1
T
OUT
A*1
T
OUT
A*2
7
8
22
选择
选择B
环回
7
8
22
选择
选择B
环回
R
OUT
A
R
OUT
A
T
IN
A
T
IN
A
T
OUT
B 1
R
IN
B1
T
IN
B
R
OUT
B
T
OUT
B *1
R
IN
B1
T
IN
B
R
OUT
B
14
GND
14
SP306
GND
SP306
RS - 423驱动器
*三态输出
RS - 423接收器
RS- 422接收器
RS-422驱动器
*三态输出
图3.控制输入配置 - 选择A = 1，选择B = 0
公司
93
SIGNAL PROCESSING EXCELLENCE
