REMOTE CONTROL 
159 
 
RS-232C Interface 
 
The RS-232 serial interface can be connected to the serial interface 
of a controller (PC or IPC) through a DB9 cable. 
  Use a GWINSTEK (null modem) DB-9 cable. 
  Cable length should not exceed 2 meters. 
  To avoid electrical shock, turn off the power 
when plugging and unplugging the DB-9 cable. 
Configure RS232 Interface 
 
Default 
transmission 
configuration 
Full duplex asynchronous 
communication with start 
bit and stop bit 
Pin 2: RxD 
Pin 3: TxD 
Pin 5: GND 
Pin 2: RTS 
Pin 3: CTS 
Pin 1, 4, 6 , 9: No 
Connection 
Use a Null Modem connection as shown in the 
diagram below.