The RS232 to RS232
photo isolator box allows the input signals to be completely prevent up
to 1000V. There are 3 LED indicators correspond to Tx, Rx, and power
signals. A 9V, 500mA power adapter is provided in the package.
|
|
There
are one male and one female connectors in the box, the signal
assignments are shown below:
|
DB25 Pin#
|
Signal Name
|
RS-232 Signal name
|
Direction
|
1
|
Chassis Ground (GND)
|
AA
|
Common
|
2
|
Transmit Data (TxD)
|
BA
|
Output
|
3
|
Receive Data (RxD)
|
BB
|
Input
|
4
|
Request to Send (RTS)
|
CA
|
Output
|
5
|
Clear to Send (CTS)
|
CB
|
Input
|
6
|
Data Set Ready (DSR)
|
CC
|
Input
|
7
|
Signal Ground (SG)
|
AB
|
Common
|
8
|
Data Carrier Detect (DCD)
|
CF
|
Input
|
20
|
Data Terminal Ready (DTR)
|
CD
|
Output
|
|
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