Remote Operation Mode 
  Copyright ©ITECH Electronics Co., Ltd.  35 
All power functions can be programmed via USB. 
The USB488 interface functions of the power supply described as below: 
  Interface is 488.2 USB488 interface. 
  Interface Receiver REN_CONTROL, GO_TO_LOCAL, and 
LOCAL_LOCKOUT request. 
  Interface receive MsgID = TRIGGER USBTMC order information, 
and will pass TRIGGER order to the functional layer. 
Power USB488 device functions described as follows: 
  Devices can read all of the mandatory SCPI orders. 
  Device is SR1 enabled. 
  Device is RL1 enabled. 
  Device is DT1 enabled. 
5.3 GPIB interface 
First, Connect the GPIB interface on the power supply and the GPIB 
card on computer via IEEE488 bus, must be full access and tighten the 
screws. Then set the address, the address range of the power : 0 to 30, 
can set by the function key on the front panel,    press the +
   
key to enter the system menu function, find the GPIB address setting by   
button, type the address, 
key to confirm. GPIB address is 
stored in nonvolatile memory line. 
5.4 RS485 interface 
IT6922B/IT6932B/IT6942B/IT6952B/IT6953B power supply, via the RS485 
interface, provides multi-unit control function for up to 30 units (If connecting 
more than 10 units, add a 120Ω resistor terminator to the last unit). 
User can set the following parameters of the RS485 interface: 
Baud rate: 9600(4800/9600/19200/38400/57600/115200) 
Parity and data bit: NONE/8BIT、EVEN/8BIT、ODD/8BIT 
Mode: SIGNAL 
MUX (Address can be set within 0-30) 
 
To set the multi-unit connection mode, access the menu system Menu→SYST 
SET→COMM→RS485→MODE→MUX, to turn on the chain mode. 
 
Set each unit with a different Address (0 ~ 30). Then by using RS485, connect