IT6700 User manual 
User Manual 
33
     Chapter6  Remote Operation Mode 
IT6700 series power supply three standard communication interface: RS232, USB, 
GPIB, the user can choose any one of them to implement a communication with the 
computer. 
 
6.1 RS232 interface 
There is a DB9 connector at the rear of the power supply, when connect to computer, 
you need to select a cable with COM port on both side;     
To active communication,you need to enable the settings in menu to be the same with the 
PC communication configuration. 
 
Note:The RS232 settings must match the settings in front panel system information. If any 
change, please press
(Shift)+
I-setI-set
key to modify the menu: SYST SET\COMM. 
 
RS-232 data format   
RS-232 data is a 10-bit words which has a start bit and a stop bit. The start bit and stop 
bit can’t be edited. However, you can select the 
parity items with  (Shift)+
I-setI-set
key on 
the front panel.   
Parity options are stored in nonvolatile memory 
 
Baud Rate 
The front panel  (Shift)+
I-setI-set
 button allows the user to select a baud rate which is 
stored in the non-volatile memory:   4800,9600,19200 38400,57600,115200 
RS-232 connection cable 
Use a RS232 cable with DB-9 interface, RS-232 serial port can connect with the controller 
(eg PC). Do not use blank Modem cable. Below Table shows the plug pins.   
If your computer is using a RS-232 interface with DB-25 connector, you need an adapter 
cable with a DB-25 connector at one end and the other side is a DB-9(not blank modem 
cable)